View W78I052A_4967275.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

W78IE52/W78I052A 8-BIT MICROCONTROLLER
Table of Contents 1. 2. 3. 4. 5. GENERAL DESCRIPTION ......................................................................................................... 3 FEATURES ................................................................................................................................. 3 PIN CONFIGURATIONS ............................................................................................................ 4 PIN DESCRIPTION..................................................................................................................... 5 FUNCTIONAL DESCRIPTION ................................................................................................... 6 5.1 5.2 Timers 0, 1, and 2........................................................................................................... 6 New Defined Peripheral.................................................................................................. 6
5.2.1 5.2.2 5.2.3 5.2.4
INT2 / INT3 ................................................................................................................6
PORT4 .........................................................................................................................7 Reduce EMI Emission ..................................................................................................7 Power-off Flag ..............................................................................................................8 Watchdog Timer Control Register ................................................................................8
5.3 5.4 5.5
Watchdog Timer ............................................................................................................. 8
5.3.1
Clock ............................................................................................................................. 10 Power Management...................................................................................................... 10
5.5.1 5.5.2 Idle Mode....................................................................................................................10 Power-down Mode......................................................................................................10
5.6 6. 6.1 6.2 6.3 6.4 6.5 6.6 6.7 7. 7.1 7.2 7.3 8. 9. 10.
Reset............................................................................................................................. 10 Read Operation ............................................................................................................ 11 Output Disable Condition.............................................................................................. 11 Program Operation ....................................................................................................... 11 Program Verify Operation ............................................................................................. 11 Erase Operation............................................................................................................ 11 Erase Verify Operation ................................................................................................. 11 Program/Erase Inhibit Operation .................................................................................. 12 Lock bit.......................................................................................................................... 13 MOVC Inhibit................................................................................................................. 14 Encryption ..................................................................................................................... 14
ON-CHIP FLASH EPROM CHARACTERISTICS..................................................................... 11
SECURITY BITS ....................................................................................................................... 13
ABSOLUTE MAXIMUM RATINGS ........................................................................................... 14 DC CHARACTERISTICS.......................................................................................................... 15 AC CHARACTERISTICS .......................................................................................................... 16 Publication Release Date: October 2, 2006 Revision A4
-1-
W78IE52/W78I052A
10.1 10.2 10.3 10.4 10.5 11. 11.1 11.2 11.3 11.4 11.5 12. 12.1 12.2 13. 13.1 13.2 14. Program Fetch Cycle .................................................................................................... 16 Data Read Cycle........................................................................................................... 17 Data Write Cycle........................................................................................................... 17 Port Access Cycle......................................................................................................... 17 Program Operation ....................................................................................................... 18 Program Fetch Cycle .................................................................................................... 19 Data Read Cycle........................................................................................................... 19 Data Write Cycle........................................................................................................... 20 Port Access Cycle......................................................................................................... 20 Program Operation ....................................................................................................... 21 Expanded External Program Memory and Crystal ....................................................... 22 Expanded External Data Memory and Oscillator ......................................................... 23 40-pin DIP ..................................................................................................................... 24 44-pin PLCC ................................................................................................................. 25
TIMING WAVEFORMS ............................................................................................................. 19
TYPICAL APPLICATION CIRCUITS ........................................................................................ 22
PACKAGE DIMENSIONS ......................................................................................................... 24
REVISION HISTORY ................................................................................................................ 26
-2-
W78IE52/W78I052A
1. GENERAL DESCRIPTION
The W78IE52 is an 8-bit microcontroller which can accommodate a wider frequency range with low power consumption. The instruction set for the W78IE52 is fully compatible with the standard 8051. The W78IE52 contains an 8K bytes Flash EPROM; a 256 bytes RAM; four 8-bit bi-directional and bitaddressable I/O ports; an additional 4-bit I/O port P4; three 16-bit timer/counters; a hardware watchdog timer and a serial port. These peripherals are supported by eight sources two-level interrupt capability. To facilitate programming and verification, the Flash EPROM inside the W78IE52 allows the program memory to be programmed and read electronically. Once the code is confirmed, the user can protect the code for security. The W78IE52 microcontroller has two power reduction modes, idle mode and power-down mode, both of which are software selectable. The idle mode turns off the processor clock but allows for continued peripheral operation. The power-down mode stops the crystal oscillator for minimum power consumption. The external clock can be stopped at any time and in any state without affecting the processor.
2. FEATURES
Fully static design 8-bit CMOS microcontroller Wide supply voltage of 2.4V to 5.5V Industrial temperature grade -40C - 85C 256 bytes of on-chip scratchpad RAM 8 KB electrically erasable/programmable Flash EPROM 64 KB program memory address space 64 KB data memory address space Four 8-bit bi-directional ports One extra 4-bit bit-addressable I/O port, additional INT2 / INT3 (available on 44-pin PLCC package) Three 16-bit timer/counters One full duplex serial port (UART) Watchdog Timer Eight sources, two-level interrupt capability EMI reduction mode Built-in power management Code protection mechanism Packages: - DIP 40: W78IE52 - PLCC 44: W78IE52P - Lead Free (RoHS) DIP 40: W78I052A24DL - Lead Free (RoHS) PLCC 44: W78I052A24PL
-3-
Publication Release Date: October 2, 2006 Revision A4
W78IE52/W78I052A
3. PIN CONFIGURATIONS
40-Pin DIP (W78IE52)
T2, P1.0 T2EX, P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 RST RXD, P3.0 TXD, P3.1 INT0, P3.2 INT1, P3.3 T0, P3.4 T1, P3.5 WR, P3.6 RD, P3.7 XTAL2 XTAL1 VSS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 VDD P0.0, AD0 P0.1, AD1 P0.2, AD2 P0.3, AD3 P0.4, AD4 P0.5, AD5 P0.6, AD6 P0.7, AD7 EA ALE PSEN P2.7, A15 P2.6, A14 P2.5, A13 P2.4, A12 P2.3, A11 P2.2, A10 P2.1, A9 P2.0, A8
44-Pin PLCC (W78IE52P)
T 2 E X , P 1 . 1 / I N T 3 , P 4V .D 2D
P 1 . 4
P 1 . 3
P 1 . 2
T 2 , P 1 . 0
A D 0 , P 0 . 0
A D 1 , P 0 . 1
A D 2 , P 0 . 2
A D 3 , P 0 . 3 40 39 38 37 36 35 34 33 32 31 30 29 28 P 2 . 4 , A 1 2
P1.5 P1.6 P1.7 RST RXD, P3.0 INT2, P4.3 TXD, P3.1 INT0, P3.2 INT1, P3.3 T0, P3.4 T1, P3.5
6 5 4 3 2 1 44 43 42 41 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 P 3 . 6 , / W R P 3 . 7 , / R D X T A L 2 X T A L 1 V S S P 4 . 0 P 2 . 0 , A 8 P 2 . 1 , A 9 P 2 . 2 , A 1 0 P 2 . 3 , A 1 1
P0.4, AD4 P0.5, AD5 P0.6, AD6 P0.7, AD7 EA P4.1 ALE PSEN P2.7, A15 P2.6, A14 P2.5, A13
-4-
W78IE52/W78I052A
4. PIN DESCRIPTION
SYMBOL DESCRIPTIONS
EA
EXTERNAL ACCESS ENABLE: This pin forces the processor to execute out of external ROM. It should be kept high to access internal ROM. The ROM address and data will not be presented on the bus if EA pin is high and the program counter is within on-chip ROM area. PROGRAM STORE ENABLE: PSEN enables the external ROM data onto the Port 0 address/ data bus during fetch and MOVC operations. When internal ROM access is performed, no PSEN strobe signal outputs from this pin.
PSEN
ADDRESS LATCH ENABLE: ALE is used to enable the address latch that separates the address from the data on Port 0. RESET: A high on this pin for two machine cycles while the oscillator is running resets RST the device. CRYSTAL1: This is the crystal oscillator input. This pin may be driven by an external XTAL1 clock. XTAL2 CRYSTAL2: This is the crystal oscillator output. It is the inversion of XTAL1. VSS GROUND: Ground potential VDD POWER SUPPLY: Supply voltage for operation. PORT 0: Port 0 is a bi-directional I/O port which also provides a multiplexed low order P0.0 - P0.7 address/data bus during accesses to external memory. The Port 0 is also an open-drain port and external pull-ups need to be connected while in programming. PORT 1: Port 1 is a bi-directional I/O port with internal pull-ups. The bits have alternate functions which are described below: P1.0 - P1.7 T2(P1.0): Timer/Counter 2 external count input T2EX(P1.1): Timer/Counter 2 Reload/Capture control PORT 2: Port 2 is a bi-directional I/O port with internal pull-ups. This port also provides P2.0 - P2.7 the upper address bits for accesses to external memory. PORT 3: Port 3 is a bi-directional I/O port with internal pull-ups. All bits have alternate functions, which are described below: RXD(P3.0) : Serial Port receiver input TXD(P3.1) : Serial Port transmitter output ALE P3.0 - P3.7
INT0 (P3.2): External Interrupt 0
INT1(P3.3): External Interrupt 1 T0(P3.4) : Timer 0 External Input T1(P3.5) : Timer 1 External Input
WR (P3.6) : External Data Memory Write Strobe RD (P3.7) : External Data Memory Read Strobe PORT 4: Another bit-addressable bidirectional I/O port P4. P4.3 and P4.2 are alternative P4.0 - P4.3 function pins. It can be used as general I/O port or external interrupt input sources (INT2 /INT3 ).
-5-
Publication Release Date: October 2, 2006 Revision A4
W78IE52/W78I052A
5. FUNCTIONAL DESCRIPTION
The W78IE52 architecture consists of a core controller surrounded by various registers, five general purpose I/O ports, 256 bytes of RAM, three timer/counters, and a serial port. The processor supports 111 different opcodes and references both a 64K program address space and a 64K data storage space.
5.1
Timers 0, 1, and 2
Timers 0, 1, and 2 each consist of two 8-bit data registers. These are called TL0 and TH0 for Timer 0, TL1 and TH1 for Timer 1, and TL2 and TH2 for Timer 2. The TCON and TMOD registers provide control functions for timers 0 and 1. The T2CON register provides control functions for Timer 2. RCAP2H and RCAP2L are used as reload/capture registers for Timer 2. The operations of Timer 0 and Timer 1 are the same as in the W78C51. Timer 2 is a special feature of the W78IE52: it is a 16-bit timer/counter that is configured and controlled by the T2CON register. Like Timers 0 and 1, Timer 2 can operate as either an external event counter or as an internal timer, depending on the setting of bit C/T2 in T2CON. Timer 2 has three operating modes: capture, autoreload, and baud rate generator. The clock speed at capture or auto-reload mode is the same as that of Timers 0 and 1.
5.2
New Defined Peripheral
In order to be more suitable for I/O, an extra 4-bit bit-addressable port P4 and two external interrupt INT2 , INT3 has been added to either the PLCC or QFP 44 pin package. And description follows:
5.2.1
INT2 / INT3
Two additional external interrupts, INT2 and INT3 , whose functions are similar to those of external interrupt 0 and 1 in the standard 80C52. The functions/status of these interrupts are determined/shown by the bits in the XICON (External Interrupt Control) register. The XICON register is bit-addressable but is not a standard register in the standard 80C52. Its address is at 0C0H. To set/clear bits in the XICON register, one can use the "SETB (/CLR) bit" instruction. For example, "SETB 0C2H" sets the EX2 bit of XICON. XICON - external interrupt control (C0H) PX3 PX3: EX3: IE3: IT3: PX2: EX2: IE2: IT2: EX3 IE3 IT3 PX2 EX2 IE2 IT2
External interrupt 3 priority high if set External interrupt 3 enable if set If IT3 = 1, IE3 is set/cleared automatically by hardware when interrupt is detected/serviced External interrupt 3 is falling-edge/low-level triggered when this bit is set/cleared by software External interrupt 2 priority high if set External interrupt 2 enable if set If IT2 = 1, IE2 is set/cleared automatically by hardware when interrupt is detected/serviced External interrupt 2 is falling-edge/low-level triggered when this bit is set/cleared by software
-6-
W78IE52/W78I052A
INTERRUPT SOURCE
VECTOR ADDRESS
POLLING SEQUENCE WITHIN PRIORITY LEVEL
ENABLE REQUIRED SETTINGS
INTERRUPT TYPE EDGE/LEVEL
External Interrupt 0 Timer/Counter 0 External Interrupt 1 Timer/Counter 1 Serial Port Timer/Counter 2 External Interrupt 2 External Interrupt 3
03H 0BH 13H 1BH 23H 2BH 33H 3BH
0 (highest) 1 2 3 4 5 6 7 (lowest)
IE.0 IE.1 IE.2 IE.3 IE.4 IE.5 XICON.2 XICON.6
TCON.0 TCON.2 XICON.0 XICON.3
5.2.2
PORT4
Another bit-addressable port P4 is also available and only 4 bits (P4<3:0>) can be used. This port address is located at 0D8H with the same function as that of port P1, except the P4.3 and P4.2 are alternative function pins. It can be used as general I/O pins or external interrupt input sources ( INT2 , INT3 ). Example: P4 MOV MOV ORL ANL REG 0D8H P4, #0AH ; Output data "A" through P4.0 - P4.3. A, P4 ; Read P4 status to Accumulator. P4, #00000001B P4, #11111110B
5.2.3
Reduce EMI Emission
Because of on-chip Flash EPROM, when a program is running in internal ROM space, the ALE will be unused. The transition of ALE will cause noise, so it can be turned off to reduce the EMI emission if it is useless. Turning off the ALE signal transition only requires setting the bit 0 of the AUXR SFR, which is located at 08Eh. When ALE is turned off, it will be reactivated when the program accesses external ROM/RAM data or jumps to execute an external ROM code. The ALE signal will turn off again after it has been completely accessed or the program returns to internal ROM code space. The AO bit in the AUXR register, when set, disables the ALE output. In order to reduce EMI emission from oscillation circuitry, W78IE52 allows user to diminish the gain of on-chip oscillator amplifiers by using programmer to clear the B7 bit of security register. Once B7 is set to 0, a half of gain will be decreased. Care must be taken if user attempts to diminish the gain of oscillator amplifier, reducing a half of gain may affect the external crystal operating improperly at high frequency above 20 MHz. The value of R and C1, C2 may need some adjustment while running at lower gain. ***AUXR - Auxiliary register (8EH) AO
AO: Turn off ALE output.
-7-
Publication Release Date: October 2, 2006 Revision A4
W78IE52/W78I052A
5.2.4 Power-off Flag
***PCON - Power control (87H) POF: POF GF1 GF0 PD IDL
Power off flag. Bit is set by hardware when power on reset. It can be cleared by software to determine chip reset is a warm boot or cold boot. Power down mode bit. Set it to enter power down mode. Idle mode bit. Set it to enter idle mode.
GF1, GF0: These two bits are general-purpose flag bits for the user. PD: IDL:
The power-off flag is located at PCON.4. This bit is set when VDD has been applied to the part. It can be used to determine if a reset is a warm boot or a cold boot if it is subsequently reset by software.
5.3
Watchdog Timer
The Watchdog timer is a free-running timer which can be programmed by the user to serve as a system monitor, a time-base generator or an event timer. It is basically a set of dividers that divide the system clock. The divider output is selectable and determines the time-out interval. When the time-out occurs a system reset can also be caused if it is enabled. The main use of the Watchdog timer is as a system monitor. This is important in real-time control applications. In case of power glitches or electromagnetic interference, the processor may begin to execute errant code. If this is left unchecked the entire system may crash. The watchdog time-out selection will result in different time-out values depending on the clock speed. The Watchdog timer will de disabled on reset. In general, software should restart the Watchdog timer to put it into a known state. The control bits that support the Watchdog timer are discussed below.
5.3.1
Watchdog Timer Control Register
Bit: 7 ENW 6 CLRW 5 WIDL 4 3 2 PS2 1 PS1 0 PS0
Mnemonic: WDTC
Address: 8FH
ENW : Enable watch-dog if set. CLRW: Clear watch-dog timer and prescaler if set. This flag will be cleared automatically WIDL : If this bit is set, watch-dog is enabled under IDLE mode. If cleared, watch-dog is disabled under IDLE mode. Default is cleared. PS2, PS1, PS0: Watch-dog prescaler timer select. Prescaler is selected when set PS2 - 0 as follows:
-8-
W78IE52/W78I052A
PS2 PS1 PS0
PRESCALER SELECT
0 0 0 0 1 1 1 1
0 1 0 1 0 0 1 1
0 0 1 1 0 1 0 1
2 4 8 16 32 64 128 256
The time-out period is obtained using the following equation:
1 x 2 14 x PRESCALER x 1000 x 12 mS OSC
Before Watchdog time-out occurs, the program must clear the 14-bit timer by writing 1 to WDTC.6 (CLRW). After 1 is written to this bit, the 14-bit timer, prescaler and this bit will be reset on the next instruction cycle. The Watchdog timer is cleared on reset.
WIDL IDLE
ENW
EXTERNAL RESET 14-BIT TIMER
CLEAR
OSC
1/12
PRESCALER
INTERNAL RESET
Watchdog Timer Block Diagram
CLRW
Typical Watch-Dog time-out period when OSC = 20 MHz
PS2 PS1 PS0 WATCHDOG TIME-OUT PERIOD
0 0 0 0 1 1 1 1
0 1 0 1 0 0 1 1
0 0 1 1 0 1 0 1
19.66 mS 39.32 mS 78.64 mS 157.28 mS 314.57 mS 629.14 mS 1.25 S 2.50 S
-9-
Publication Release Date: October 2, 2006 Revision A4
W78IE52/W78I052A
5.4 Clock
The W78IE52 is designed to be used with either a crystal oscillator or an external clock. Internally, the clock is divided by two before it is used. This makes the W78IE52 relatively insensitive to duty cycle variations in the clock. The W78IE52 incorporates a built-in crystal oscillator. To make the oscillator work, a crystal must be connected across pins XTAL1 and XTAL2. In addition, a load capacitor must be connected from each pin to ground. An external clock source should be connected to pin XTAL1. Pin XTAL2 should be left unconnected. The XTAL1 input is a CMOS-type input, as required by the crystal oscillator.
5.5
5.5.1
Power Management
Idle Mode
The idle mode is entered by setting the IDL bit in the PCON register. In the idle mode, the internal clock to the processor is stopped. The peripherals and the interrupt logic continue to be clocked. The processor will exit idle mode when either an interrupt or a reset occurs.
5.5.2
Power-down Mode
When the PD bit of the PCON register is set, the processor enters the power-down mode. In this mode all of the clocks are stopped, including the oscillator. The only way to exit power-down mode is by a reset.
5.6
Reset
The external RESET signal is sampled at S5P2. To take effect, it must be held high for at least two machine cycles while the oscillator is running. An internal trigger circuit in the reset line is used to deglitch the reset line when the W78IE52 is used with an external RC network. The reset logic also has a special glitch removal circuit that ignores glitches on the reset line. During reset, the ports are initialized to FFH, the stack pointer to 07H, PCON (with the exception of bit 4) to 00H, and all of the other SFR registers except SBUF to 00H. SBUF is not reset.
- 10 -
W78IE52/W78I052A
6. ON-CHIP FLASH EPROM CHARACTERISTICS
The W78IE52 has several modes to program the on-chip Flash EPROM. All these operations are configured by the pins RST, ALE, PSEN , A9CTRL (P3.0), A13CTRL (P3.1), A14CTRL (P3.2), OECTRL (P3.3), CE (P3.6), OE (P3.7), A0 (P1.0) and VPP ( EA ). Moreover, the A15 - A0 (P2.7 - P2.0, P1.7 - P1.0) and the D7 - D0 (P0.7 - P0.0) serve as the address and data bus respectively for these operations.
6.1
Read Operation
This operation is supported for customer to read their code and the Security bits. The data will not be valid if the Lock bit is programmed to low.
6.2
Output Disable Condition
When the OE is set to high, no data output appears on the D7..D0.
6.3
Program Operation
This operation is used to program the data to Flash EPROM and the security bits. Program operation is done when the VPP is reach to VCP (12.5V) level, CE set to low, and OE set to high.
6.4
Program Verify Operation
All the programming data must be checked after program operations. This operation should be performed after each byte is programmed; it will ensure a substantial program margin.
6.5
Erase Operation
An erase operation is the only way to change data from 0 to 1. This operation will erase all the Flash EPROM cells and the security bits from 0 to 1. This erase operation is done when the VPP is reach to VEP level, CE set to low, and OE set to high.
6.6
Erase Verify Operation
After an erase operation, all of the bytes in the chip must be verified to check whether they have been successfully erased to 1 or not. The erase verify operation automatically ensures a substantial erase margin. This operation will be done after the erase operation if VPP = VEP (14.5V), CE is high and OE is low.
- 11 -
Publication Release Date: October 2, 2006 Revision A4
W78IE52/W78I052A
6.7
Program/Erase Inhibit Operation
This operation allows parallel erasing or programming of multiple chips with different data. When P3.6 ( CE ) = VIH, P3.7 ( OE ) = VIH, erasing or programming of non-targeted chips is inhibited. So, except for the P3.6 and P3.7 pins, the individual chips may have common inputs.
P3.0 OPERATIONS P3.1 P3.2 P3.3 P3.6 ( CE ) P3.7 ( OE )
(OE (A14 (A13 (A9 CTRL) CTRL) CTRL) CTRL)
EA
P2, P1
P0
(VPP) (A15...A0) (D7...D0)
NOTES
Read Output Disable Program Program Verify Erase Erase Verify Program/Eras e Inhibit
Notes:
0 0 0 0 1 1 X
0 0 0 0 0 0 0
0 0 0 0 0 0 0
0 0 0 0 0 0 0
0 0 0 1 0 1 1
0 1 1 0 1 0 1
1 1 VCP VCP VEP VEP VCP/ VEP
Address X Address Address A0: 0, others: X Address X
Data Out Hi-Z Data In Data Out Data In 0FFH Data Out X 3 4 5
1. All these operations happen in RST = VIH, ALE = VIL and PSEN = VIH. 2. VCP = 12.5V, VEP = 14.5V, VIH = VDD, VIL = VSS. 3. The program verify operation follows behind the program operation. 4. This erase operation will erase all the on-chip Flash EPROM cells and the Security bits. 5. The erase verify operation follows behind the erase operation.
- 12 -
W78IE52/W78I052A
7. SECURITY BITS
During the on-chip Flash EPROM operation mode, the Flash EPROM can be programmed and verified repeatedly. Until the code inside the Flash EPROM is confirmed OK, the code can be protected. The protection of Flash EPROM and those operations on it are described below. The W78IE52 has a Special Setting Register, the Security Register, which can not be accessed in normal mode. The Security register can only be accessed from the Flash EPROM operation mode. Those bits of the Security Registers can not be changed once they have been programmed from high to low. They can only be reset through erase-all operation. The Security Register is addressed in the Flash EPROM operation mode by address #0FFFFh.
D7 D6 D5 D4 D3 D2 D1 D0 B7 Reserved B2 B1 B0
Security Bits
0000h
8KB Flash EPROM Program M emory
1FFFh
B0 : Lock bit, logic 0: active B1 : M OVC inhibit, logic 0: the MOVC instruction in external m em ory cannot access the code in internal m em ory. logic 1: no restriction. B2 : Encryption logic 0: the encryption logic enable logic 1: the encryption logic disable B7 : Osillator Control logic 0: 1/2 gain logic 1: Full gain Default 1 for all security bits. Reserved bits m ust be kept in logic 1.
Reserved
Security Register
0FFFFh
Special Setting Register
7.1
Lock bit
This bit is used to protect the customer's program code in the W78IE52. It may be set after the programmer finishes the programming and verifies sequence. Once this bit is set to logic 0, both the Flash EPROM data and Special Setting Registers can not be accessed again.
- 13 -
Publication Release Date: October 2, 2006 Revision A4
W78IE52/W78I052A
7.2
MOVC Inhibit
This bit is used to restrict the accessible region of the MOVC instruction. It can prevent the MOVC instruction in external program memory from reading the internal program code. When this bit is set to logic 0, a MOVC instruction in external program memory space will be able to access code only in the external memory, not in the internal memory. A MOVC instruction in internal program memory space will always be able to access the ROM data in both internal and external memory. If this bit is logic 1, there are no restrictions on the MOVC instruction.
7.3
Encryption
This bit is used to enable/disable the encryption logic for code protection. Once encryption feature is enabled, the data presented on port 0 will be encoded via encryption logic. Only whole chip erase will reset this bit.
+5V +5V
VDD A0 to A7 VIL VIL VIL VIL VIL VIH P1 P3.0 P3.1 P3.2 P3.3 P3.6 P3.7 X'tal1 X'tal2 Vss PSEN ALE RST VIL VIH VIH P0 EA/Vpp PGM DATA A0 to A7 VIL VIL VIL VIL VIH VIL P1 P3.0 P3.1 P3.2 P3.3 P3.6 P3.7 X'tal1 X'tal2 Vss
VDD P0 EA/Vpp ALE RST PSEN PGM DATA
VCP
VCP VIL VIH VIH
P2
A8 to A15
P2
A8 to A15
Programming Configuration
Programming Verification
8. ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL MIN. MAX. UNIT
DC Power Supply Input Voltage Operating Temperature Storage Temperature
VDD - VSS VIN TA TST
-0.3 VSS -0.3 -40 -55
+7.0 VDD +0.3 85 +150
V V C C
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the device.
- 14 -
W78IE52/W78I052A
9. DC CHARACTERISTICS
VSS = 0V, TA = 25 C, unless otherwise specified.
PARAMETER
SYM.
SPECIFICATION MIN. MAX.
UNIT
TEST CONDITIONS
Operating Voltage Operating Current Idle Current Power Down Current Input Current P1, P2, P3, P4 Input Current RST Input High Voltage RST[*1] Input High Voltage XTAL1 [*3] Output Low Voltage P1, P2, P3, P4 Output Low Voltage P0, ALE, PSEN [*2] Sink Current P1, P2, P3, P4 Sink Current P0, ALE, PSEN Output High Voltage P1, P2, P3, P4 Output High Voltage P0, ALE, PSEN [*2] Source Current P1, P2, P3, P4 Source Current P0, ALE, PSEN
VDD IDD IIDLE IPWDN IIN1 IIN2 VIH2 VIH3 VOL1 VOL2 ISK1 ISK2 VOH1 VOH2 ISR1 ISR2
2.4 -50 -10 3.5 1.7 3.5 1.6 4 1.8 8 4.0 2.4 1.4 2.4 1.4 -100 -10 -8 -1.0
5.5 20 3 6 1.5 50 20 +10 +300 VDD +0.2 VDD +0.2 VDD +0.2 VDD +0.2 0.45 0.25 0.45 0.25 12 5.4 16 9 -250 -30 -14 -2.4
V mA mA mA mA A A A A V V V V V V V V mA mA mA mA V V V V A A mA mA
No load VDD = 5.5V No load VDD = 2.4V VDD = 5.5V, FOSC = 20 MHz VDD = 2.4V, FOSC = 12 MHz VDD = 5.5V, FOSC = 20 MHz VDD = 2.4V, FOSC = 12 MHz VDD = 5.5V VIN = 0V or VDD VDD = 5.5V 0 < VIN < VDD VDD = 5.5V VDD = 2.4V VDD = 5.5V VDD = 2.4V VDD = 4.5V, IOL = +2 mA VDD = 2.4V, IOL = +1 mA VDD = 4.5V, IOL = +4 mA VDD = 2.4V, IOL = +2 mA VDD = 4.5V, Vin = 0.45V VDD = 2.4V, Vin = 0.45V VDD = 4.5V, Vin = 0.45V VDD = 2.4V, Vin = 0.45V VDD = 4.5V, IOH = -100 A VDD = 2.4V, IOH = -8 A VDD = 4.5V, IOH = -400 A VDD = 2.4V, IOH = -200 A VDD = 4.5V, Vin = 2.4V VDD = 2.4V, Vin = 1.4V VDD = 4.5V, Vin = 2.4V VDD = 2.4V, Vin = 1.4V
Notes: *1. RST pin is a Schmitt trigger input. *2. P0, ALE and /PSEN are tested in the external access mode. *3. XTAL1 is a CMOS input. *4. Pins of P1, P2, P3, P4 can source a transition current when they are being externally driven from 1 to 0.
- 15 -
Publication Release Date: October 2, 2006 Revision A4
W78IE52/W78I052A
10. AC CHARACTERISTICS
The AC specifications are a function of the particular process used to manufacture the part, the ratings of the I/O buffers, the capacitive load, and the internal routing capacitance. Most of the specifications can be expressed in terms of multiple input clock periods (TCP), and actual parts will usually experience less than a 20 nS variation. The numbers below represent the performance expected from a 0.6micron CMOS process when using 2 and 4 mA output buffers.
Clock Input Waveform
XTAL1
T CH F OP, TCP T CL
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNIT
NOTES
Operating Speed Clock Period Clock High Clock Low
FOP TCP TCH TCL
0 41.7 20 20
-
20 -
MHz nS nS nS
1 2 3 3
Notes: 1. The clock may be stopped indefinitely in either state. 2. The TCP specification is used as a reference in other specifications. 3. There are no duty cycle requirements on the XTAL1 input.
10.1 Program Fetch Cycle
PARAMETER SYMBOL MIN. TYP. MAX. UNIT NOTES
Address Valid to ALE Low Address Hold from ALE Low ALE Low to PSEN Low
TAAS TAAH TAPL TPDA TPDH TPDZ TALW TPSW
1 TCP - 1 TCP - 1 TCP - 0 0 2 TCP - 3 TCP -
2 TCP 3 TCP
2 TCP 1 TCP 1 TCP -
nS nS nS nS nS nS nS nS
4 1, 4 4 2 3
PSEN Low to Data Valid
Data Hold after PSEN High Data Float after PSEN High ALE Pulse Width
PSEN Pulse Width
4 4
Notes: 1. P0.0 - P0.7, P2.0 - P2.7 remain stable throughout entire memory cycle. 2. Memory access time is 3 TCP.
3. Data have been latched internally prior to PSEN going high. 4. "" (due to buffer driving delay and wire loading) is 20 nS.
- 16 -
W78IE52/W78I052A
10.2 Data Read Cycle
PARAMETER SYMBOL MIN. TYP. MAX. UNIT NOTES
ALE Low to RD Low
RD Low to Data Valid
TDAR TDDA TDDH TDDZ TDRD
3 TCP - 0 0 6 TCP -
6 TCP
3 TCP + 4 TCP 2 TCP 2 TCP -
nS nS nS nS nS
1, 2 1
Data Hold from RD High Data Float from RD High
RD Pulse Width
Notes:
2
1. Data memory access time is 8 TCP. 2. "" (due to buffer driving delay and wire loading) is 20 nS.
10.3 Data Write Cycle
PARAMETER SYMBOL MIN. TYP. MAX. UNIT
ALE Low to WR Low Data Valid to WR Low Data Hold from WR High
WR Pulse Width
TDAW TDAD TDWD TDWR
3 TCP - 1 TCP - 1 TCP - 6 TCP -
6 TCP
3 TCP + -
nS nS nS nS
Note: "" (due to buffer driving delay and wire loading) is 20 nS.
10.4 Port Access Cycle
PARAMETER SYMBOL MIN. TYP. MAX. UNIT
Port Input Setup to ALE Low Port Input Hold from ALE Low Port Output to ALE
TPDS TPDH TPDA
1 TCP 0 1 TCP
-
-
nS nS nS
Note: Ports are read during S5P2, and output data becomes available at the end of S6P2. The timing data are referenced to ALE, since it provides a convenient reference.
- 17 -
Publication Release Date: October 2, 2006 Revision A4
W78IE52/W78I052A
10.5 Program Operation
PARAMETER SYMBOL MIN. TYP. MAX. UNIT
VPP Setup Time Data Setup Time Data Hold Time Address Setup Time Address Hold Time
CE Program Pulse Width for Program Operation
TVPS TDS TDH TAS TAH TPWP TOCS TOCH TOES TDFP TOEV
2.0 2.0 2.0 2.0 0 290 2.0 2.0 2.0 0 -
300 -
310 130 150
S S S S S S S S S nS nS
OECTRL Setup Time OECTRL Hold Time
OE Setup Time
OE High to Output Float
Data Valid from OE
and the PSEN pin must pull in VIH status.
Note: Flash data can be accessed only in flash mode. The RST pin must pull in VIH status, the ALE pin must pull in VIL status,
- 18 -
W78IE52/W78I052A
11. TIMING WAVEFORMS
11.1 Program Fetch Cycle
S1 XTAL1 TALW ALE TAPL PSEN TPSW TAAS PORT 2 TAAH PORT 0 Code A0-A7 Data A0-A7 Code A0-A7 Data A0-A7 TPDA TPDH, TPDZ S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6
11.2 Data Read Cycle
S4 XTAL1 ALE PSEN PORT 2
S5
S6
S1
S2
S3
S4
S5
S6
S1
S2
S3
A8-A15 A0-A7 DATA TDAR TDDA
PORT 0 TDDH, TDDZ RD TDRD
- 19 -
Publication Release Date: October 2, 2006 Revision A4
W78IE52/W78I052A
Timing Waveforms, continued
11.3 Data Write Cycle
S4 XTAL1 ALE PSEN PORT 2 PORT 0 WR
S5
S6
S1
S2
S3
S4
S5
S6
S1
S2
S3
A8-A15 A0-A7 DATA OUT
TDAD
T DWD
T DAW
T DWR
11.4 Port Access Cycle
S5 XTAL1
S6
S1
ALE TPDS PORT INPUT SAMPLE T PDH T PDA DATA OUT
- 20 -
W78IE52/W78I052A
Timing Waveforms, continued
11.5 Program Operation
Program P2, P1 VIH (A15... A0) VIL P3.6 (CE) VIH VIL
Program Verify
Read Verify
Address Stable TAS TPWP TAH T OCS TOCH TOES TDH Data In TDS TOEV TVPS DOUT TDFP
Address Valid
P3.3 VIH (OECTRL) VIL P3.7 (OE) VIH VIL
P0 VIH (A7... A0) VIL Vcp Vpp VIH
Data Out
- 21 -
Publication Release Date: October 2, 2006 Revision A4
W78IE52/W78I052A
12. TYPICAL APPLICATION CIRCUITS
12.1 Expanded External Program Memory and Crystal
V DD V DD 31 19 10 u
CRYSTAL
EA XTAL1
R 18 XTAL2 9 RST INT0 INT1 T0 T1 P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 W78IE52
8.2 K C1 C2
P0.0 P0.1 P0.2 P0.3 P0.4 P0.5 P0.6 P0.7 P2.0 P2.1 P2.2 P2.3 P2.4 P2.5 P2.6 P2.7
39 AD0 38 AD1 37 AD2 36 AD3 35 AD4 34 AD5 33 AD6 32 AD7 21 22 23 24 25 26 27 28 A8 A9 A10 A11 A12 A13 A14 A15
AD0 3 AD1 4 AD2 7 AD3 8 AD413 AD514 AD617 AD718 GND1
D0 D1 D2 D3 D4 D5 D6 D7
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
2 A0 5 A1 6 A2 9 A3 12 A4 15 A5 16 A6 19 A7
OC 11 G 74373
12 13 14 15 1 2 3 4 5 6 7 8
A0 10 A1 9 A2 8 A3 7 A4 6 A5 5 A6 4 A7 3 A8 25 A9 24 A10 21 A11 23 A12 2 A13 26 A1427 A15 1
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15
O0 O1 O2 O3 O4 O5 O6 O7
11 12 13 15 16 17 18 19
AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7
RD 17 WR 16 PSEN 29 ALE 30 TXD 11 10 RXD
GND20 CE 22 OE 27512
Figure A
CRYSTAL
C1
C2
R
16 MHz 20 MHz
30P 15P
30P 15P
-
Above table shows the reference values for crystal applications (full gain).
Note: C1, C2, R components refer to Figure A.
- 22 -
W78IE52/W78I052A
Typical Application Circuits, continued
12.2 Expanded External Data Memory and Oscillator
V DD V DD 31 EA P0.0 39AD0 P0.1 38 AD1 P0.2 37 AD2 P0.3 36 AD3 P0.4 35 AD4 P0.5 34 AD5 P0.6 33 AD6 P0.7 32 AD7 P2.0 21 A8 P2.1 22 A9 P2.2 23 A10 P2.3 24 A11 P2.4 25 A12 P2.5 26 A13 P2.6 27 A14 P2.7 28 RD 17 WR 16 PSEN29 ALE 30 TXD 11 RXD 10 AD03 D0 AD14 D1 AD27 D2 AD38 D3 AD4 D4 13 AD5 D5 14 17 AD6 D6 AD7 D7 18 GND1 OC 11 G Q0 2 A0 Q1 5 A1 Q2 6 A2 Q3 9 A3 Q412 A4 Q515 A5 Q616 A6 Q719 A7 A0 10 A1 9 A2 8 A3 7 A4 6 A5 5 A6 4 A7 3 A8 25 A9 24 21 A10 A11 23 A122 26 A13 A141 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 D0 D1 D2 D3 D4 D5 D6 D7 11 12 13 15 16 17 18 19 AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7
19 XTAL1 10 u OSCILLATOR 18 XTAL2 8.2 K 9 RST 12 INT0 13 INT1 14 T0 15 T1 1 2 3 4 5 6 7 8 P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 W78IE52
74373
GND CE 20 22 OE 27 WR 20256
Figure B
- 23 -
Publication Release Date: October 2, 2006 Revision A4
W78IE52/W78I052A
13. PACKAGE DIMENSIONS
13.1 40-pin DIP
Symbol
Dimension in inch imension in mm D Min. Nom. Max. Min. Nom. Max.
0.210 0.010 0.254 3.937 4.064 5.334
D 40 21
E1
A A1 A2 B B1 c D E E1 e1 L
a
0.150 0.155 0.160 3.81
0.016 0.018 0.022 0.406 0.457 0.559 0.048 0.050 0.054 1.219 1.27 1.372
0.008 0.010 0.014 0.203 0.254 0.356 2.055 2.070 52.20 52.58
0.590 0.600 0.610 14.986 15.24 15.494 0.540 0.545 0.550 13.72 13.84 13.97 0.090 0.100 0.110 2.286 2.54 2.794
0.120 0.130 0.140 3.048 3.302 3.556 0 15 0 15
1 S
20 E c
eA S
Notes:
0.630 0.650 0.670 16.00 16.51 17.01 0.090 2.286
A A2
A1
Base Plane Seating Plane
L B B1
e1
a
eA
1. Dimension D Max. & S include mold flash or tie bar burrs. 2. Dimension E1 does not include interlead flash 3. Dimension D & E1 include mold mismatch and . are determined at the mold parting line. 4. Dimension B1 does not include dambar protrusion/intrusion. 5. Controlling dimension: Inches. 6. General appearance spec. should be based o final visual inspection spec.
- 24 -
W78IE52/W78I052A
Package Dimensions, continued
13.2 44-pin PLCC
HD D
6 1 44 40
Symbol
7 39
Dimension in inch Dimension in mm Min. Nom. Max. Min. Nom. Max.
0.185 0.020 0.145 0.026 0.016 0.008 0.648 0.648 0.150 0.028 0.018 0.010 0.653 0.653 0.155 0.032 0.022 0.014 0.508 3.683 0.66 3.81 0.711 3.937 0.813 0.559 0.356 16.71 16.71 4.699
E
HE
GE
17
29
18
28
c
A A1 A2 b1 b c D E e GD GE HD HE L y
Notes:
0.406 0.457 0.203 0.254 16.59 16.59
0.658 16.46 0.658 16.46
0.050 0.590 0.590 0.680 0.680 0.090
BSC
1.27
BSC 16.00 16.00 17.78 17.78 2.794 0.10
0.610 0.610 0.690 0.690 0.100
0.630 14.99 15.49 0.630 14.99 15.49 0.700 17.27 0.700 17.27 0.110 0.004 2.296 17.53 17.53 2.54
L A2 A
e
Seating Plane GD
b b1
A1 y
1. Dimension D & E do not include interlead flash. 2. Dimension b1 does not include dambar protrusion/intrusion. 3. Controlling dimension: Inches 4. General appearance spec. should be based on final visual inspection spec.
- 25 -
Publication Release Date: October 2, 2006 Revision A4
W78IE52/W78I052A
14. REVISION HISTORY
VERSION DATE PAGE DESCRIPTION
A1 A2 A3 A4
September 14, 2001 April 20, 2005 December 13, 2005 October 2, 2006
22 3
Initial Issued Add Important Notice Add lead-free(RoHS) parts Remove block diagram Change operating frequency into 20MHz
Important Notice Winbond products are not designed, intended, authorized or warranted for use as components in systems or equipment intended for surgical implantation, atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, or for other applications intended to support or sustain life. Further more, Winbond products are not intended for applications wherein failure of Winbond products could result or lead to a situation wherein personal injury, death or severe property or environmental damage could occur. Winbond customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Winbond for any damages resulting from such improper use or sales.
Headquarters
No. 4, Creation Rd. III, Science-Based Industrial Park, Hsinchu, Taiwan TEL: 886-3-5770066 FAX: 886-3-5665577 http://www.winbond.com.tw/
Winbond Electronics Corporation America
2727 North First Street, San Jose, CA 95134, U.S.A. TEL: 1-408-9436666 FAX: 1-408-5441798
Winbond Electronics (Shanghai) Ltd.
27F, 2299 Yan An W. Rd. Shanghai, 200336 China TEL: 86-21-62365999 FAX: 86-21-62365998
Taipei Office
9F, No.480, Rueiguang Rd., Neihu District, Taipei, 114, Taiwan, R.O.C. TEL: 886-2-8177-7168 FAX: 886-2-8751-3579
Winbond Electronics Corporation Japan
7F Daini-ueno BLDG, 3-7-18 Shinyokohama Kohoku-ku, Yokohama, 222-0033 TEL: 81-45-4781881 FAX: 81-45-4781800
Winbond Electronics (H.K.) Ltd.
Unit 9-15, 22F, Millennium City, No. 378 Kwun Tong Rd., Kowloon, Hong Kong TEL: 852-27513100 FAX: 852-27552064
Please note that all data and specifications are subject to change without notice. All the trademarks of products and companies mentioned in this datasheet belong to their respective owners.
- 26 -

▲Up To Search▲

Price & Availability of W78I052A

	To Download W78I052A Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .