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M27W801
8 Mbit (1Mb x 8) Low Voltage OTP EPROM
LOW VOLTAGE READ OPERATION: 2.7V to 3.6V FAST ACCESS TIME: - 70ns at VCC = 3.0V to 3.6V - 80ns at VCC = 2.7V to 3.6V LOW POWER CONSUMPTION: - Active Current 15mA - Standby Current 20A PROGRAMMING VOLTAGE: 12.75V 0.25V PROGRAMMING TIMES of AROUND 52sec. (PRESTO IIB ALGORITHM) ELECTRONIC SIGNATURE - Manufacturer Code: 20h - Device Code: 42h
PLCC32 (K)
TSOP32 (N) 8 x 20mm
Figure 1. Logic Diagram DESCRIPTION The M27W801 is a low voltage 8 Mbit EPROM offered in the OTP ranges (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storage and is organized as 1,048,576 by 8 bits. The M27W801 operates in the read mode with a supply voltage as low as 2.7V at -40 to 85C temperature range. The decrease in operating power allows either a reduction of the size of the battery or an increase in the time between battery recharges. The M27W801 is offered in PLCC32 and TSOP32 (8 x 20 mm) packages.
VCC
20 A0-A19
8 Q0-Q7
E GVPP
M27W801
Table 1. Signal Names
A0-A19 Q0-Q7 E GVPP VCC VSS Address Inputs Data Outputs Chip Enable Output Enable / Program Supply Supply Voltage Ground
VSS
AI02363
April 1998
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M27W801
Figure 2A. PLCC Pin Connections Figure 2B. TSOP Pin Connections
1 32 A7 A6 A5 A4 A3 A2 A1 A0 Q0 A14 A13 A8 A9 A11 GVPP A10 E Q7
9
M27W801
25
17 Q1 Q2 VSS Q3 Q4 Q5 Q6
AI02365
A11 A9 A8 A13 A14 A17 A18 VCC A19 A16 A15 A12 A7 A6 A5 A4
A12 A15 A16 A19 VCC A18 A17
1
32
8 9
M27W801 (Normal)
25 24
16
17
AI02366
GVPP A10 E Q7 Q6 Q5 Q4 Q3 VSS Q2 Q1 Q0 A0 A1 A2 A3
Table 2. Absolute Maximum Ratings (1)
Symbol TA TBIAS TSTG VIO
(2)
Parameter Ambient Operating Temperature Temperature Under Bias Storage Temperature Input or Output Voltages (except A9) Supply Voltage A9 Voltage Program Supply Voltage
(3)
Value -40 to 85 -50 to 125 -65 to 150 -2 to 7 -2 to 7 -2 to 13.5 -2 to 14
Unit C C C V V V V
VCC VA9
(2)
VPP
Notes: 1. Except for the rating "Operating Temperature Range", stresses above those listed in the Table "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in the Operating sections of this specification is not i mplied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. Refer also to the SGS-THOMSON SURE Program and other relevant quality documents. 2. Minimum DC voltage on Input or Output is -0.5V with possible undershoot to -2.0V for a period less than 20ns. Maximum DC voltage on Output is VCC +0.5V with possible overshoot to VCC +2V for a period less than 20ns. 3. Depends on range.
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M27W801
Table 3. Operating Modes
Mode Read Output Disable Program Program Inhibit Standby Electronic Signature
Note: X = VIH or VIL, VID = 12V 0.5V.
E VIL VIL VIL Pulse VIH VIH VIL
GVPP VIL VIH VPP VPP X VIL
A9 X X X X X VID
Q0 - Q7 Data Out Hi-Z Data In Hi-Z Hi-Z Codes
Table 4. Electronic Signature
Identifier Manufacturer's Code Device Code A0 VIL VIH Q7 0 0 Q6 0 1 Q5 1 0 Q4 0 0 Q3 0 0 Q2 0 0 Q1 0 1 Q0 0 0 Hex Data 20h 42h
DEVICE OPERATION The operating modes of the M27W801 are listed in the Operating Modes table. A single power supply is required in the read mode. All inputs are TTL levels except for GVPP and 12V on A9 for Electronic Signature and Margin Mode Set or Reset . Read Mode The M27W801 has two control functions, both of which must be logically active in order to obtain data at the outputs. Chip Enable (E) is the power control and should be used for device selection. Output Enable (G) is the output control and should be used to gate data to the output pins, independent of device selection. Assuming that the addresses are stable, the address access time (tAVQV) isequal to the delay from E to output(tELQV). Data is available at the output after a delay of tGLQV from the falling edge of G, assuming that E has been low and the addresses have been stable for at least t AVQV-tGLQV. Standby Mode The M27W801 has a standbymode which reduces the supply current from 15mA to 20A with low voltage operation VCC 3.6V, see Read Mode DC
Characteristics table for details. The M27W801 is placed in the standby mode by applying a CMOS high signal to the E input. When in the standby mode, the outputs are in a high impedance state, independent of the GVPP input. Two Line Output Control BecauseEPROMs are usually used in larger memory arrays, the product features a 2 line control function which accommodates the use of multiple memory connection. The two line control function allows: a. the lowest possible memory power dissipation, b. complete assurance that output bus contention will not occur. For the most efficientuse of thesetwo controllines, E should be decoded and used as the primary device selecting function, while G should be made a common connection to all devices in the array and connected to the READ line from the system control bus. This ensures that all deselected memory devices are in their low power standby mode and that the output pins are only active when data is required from a particular memory device.
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M27W801
Table 5. AC Measurement Conditions
High Speed Input Rise and Fall Times Input Pulse Voltages Input and Output Timing Ref. Voltages 10ns 0 to 3V 1.5V Standard 20ns (10% to 90%) 0.4V to 2.4V 0.8V and 2V
Figure 3. AC Testing Input Output Waveform
Figure 4. AC Testing Load Circuit
1.3V
High Speed 3V 1.5V 0V DEVICE UNDER TEST 2.0V 0.8V
AI01822
1N914
3.3k
Standard 2.4V
OUT CL
0.4V
CL = 30pF for High Speed CL = 100pF for Standard CL includes JIG capacitance
AI01823B
Table 6. Capacitance (1) (TA = 25 C, f = 1 MHz )
Symbol CIN C OUT Parameter Input Capacitance Output Capacitance Test Condition VIN = 0V VOUT = 0V Min Max 6 12 Unit pF pF
Note: 1. Sampled only, not 100% tested.
System Considerations The power switching characteristics of Advanced CMOS EPROMs require careful decoupling of the devices. The supply current, ICC, has three segments that are of interest to the system designer: the standby current level, the active current level, and transient current peaks that are produced by the falling and rising edges of E. The magnitude of the transient current peaks is dependent on the capacitiveand inductiveloading of the deviceat the output. The associated transient voltage peaks can be suppressed by complying with the two line output
control and by properly selected decoupling capacitors. It is recommended that a 0.1F ceramic capacitor be used on every device between VCC and VSS. This should be a high frequency capacitor of low inherent inductance and should be placed as close to the device as possible. In addition, a 4.7F bulk electrolytic capacitor should be used between VCC and VSS for every eight devices. The bulk capacitor should be located near the power supply connection point. The purpose of the bulk capacitor is to overcome the voltage drop caused by the inductive effects of PCB traces.
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M27W801
Table 7. Read Mode DC Characteristics (1) (TA = -40 to 85 C; VCC = 2.7V to 3.6V; VPP = VCC)
Symbol ILI ILO ICC ICC1 ICC2 IPP VIL VIH
(2)
Parameter Input Leakage Current Output Leakage Current Supply Current Supply Current (Standby) TTL Supply Current (Standby) CMOS Program Current Input Low Voltage Input High Voltage Output Low Voltage Output High Voltage TTL
Test Condition 0V VIN VCC 0V VOUT VCC E = VIL, GVPP = VIL, IOUT = 0mA, f = 5MHz VCC 3.6V E = VIH E > VCC - 0.2V VCC 3.6V VPP = VCC
Min
Max 10 10 15 1 20 10
Unit A A mA mA A A V V V V
-0.6 0.7 VCC IOL = 2.1mA IOH = -1mA 3.6
0.2 VCC VCC + 0.5 0.4
VOL VOH
Notes: 1. VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP. 2. Maximum DC voltage on Output is VCC +0.5V.
Table 8. Read Mode AC Characteristics (1) (TA = -40 to 85 C; VCC = 2.7V to 3.6V; VPP = VCC)
M27W801 Symbol Alt Parameter Test Condition -80 (3) -100 (-120/-150/-200) Unit
VCC = 3.0V to 3.6V VCC = 2.7V to 3.6V VCC = 2.7V to 3.6V Min tAVQV tELQV tGLQV tEHQZ (2) tGHQZ
(2)
Max 70 70 40
Min
Max 80 80 50
Min
Max 100 100 60 ns ns ns ns ns ns
tACC tCE tOE tDF tDF tOH
Address Valid to Output Valid Chip Enable Low to Output Valid Output Enable Low to Output Valid Chip Enable High to Output Hi-Z Output Enable High to Output Hi-Z Address Transition to Output Transition
E = VIL, G = VIL G = VIL E = VIL G = VIL E = VIL E = VIL, G = VIL 0 0 0
50 50
0 0 0
50 50
0 0 0
60 60
tAXQX
Notes: 1. VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP. 2. Sampled only, not 100% tested. 3. Speed obtained with High Speed AC measurement conditions.
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M27W801
Figure 5. Read Mode AC Waveforms
A0-A19
VALID tAVQV tAXQX
VALID
E tGLQV G tELQV Q0-Q7 tGHQZ Hi-Z tEHQZ
AI01583B
Table 9. Programming Mode DC Characteristics (1) (TA = 25 C; VCC = 6.25V 0.25V; VPP = 12.75V 0.25V)
Symbol ILI ICC IPP VIL VIH VOL VOH VID Parameter Input Leakage Current Supply Current Program Current Input Low Voltage Input High Voltage Output Low Voltage Output High Voltage TTL A9 Voltage IOL = 2.1mA IOH = -1mA 3.6 11.5 12.5 E = VIL -0.3 2 Test Condition VIL VIN VIH Min Max 10 50 50 0.8 VCC + 0.5 0.4 Unit A mA mA V V V V V
Note: 1. VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP.
Programming The M27W801 has been designed to be fully compatible with the M27C801. As a result the M27W801 can be programmed as the M27C801 on the same programmers applying 12.75V on VPP and 6.25V on VCC. The M27W801 has the same electronic signature and uses the same PRESTO IIB algorithm. When delivered, all bits of the M27W801 are in the "1" state. Data is introduced by selectively programming "0"s into the desired bit locations. Although only '0' will be programmed, both "1" and "0" can be present in the data word. TheM27W801
is in the programming mode when VPP input is at 12.75V and E is pulsed to VIL. The data to be programmed is applied to 8 bits in parallel to the data output pins. The levels required for the address and data inputs are TTL. VCC is specified to be 6.25V 0.25V. The M27W801 can use PRESTO IIBProgramming Algorithmthat drastically reduces the programming time (typically 52 seconds). Nevertheless to achieve compatibility with all programming equipments, PRESTO Programming Algorithm can be used.
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M27W801
Table 10. MARGIN MODE AC Characteristics (1) (TA = 25 C; VCC = 6.25V 0.25V; VPP = 12.75V 0.25V)
Symbol tA9HVPH tVPHEL tA10HEH tA10LEH tEXA10X tEXVPX tVPXA9X Alt tAS9 tVPS tAS10 tAS10 tAH10 tVPH tAH9 Parameter VA9 High to VPP High VPP High to Chip Enable Low VA10 High to Chip Enable High (Set) VA10 Low to Chip Enable High (Reset) Chip Enable Transition to VA10 Transition Chip Enable Transition to VPP Transition VPP Transition to VA9 Transition Test Condition Min 2 2 1 1 1 2 2 Max Unit s s s s s s s
Note: 1. VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP.
Figure 6. MARGIN MODE AC Waveforms
VCC
A8
A9 tA9HVPH GV PP tVPHEL E tA10HEH A10 Set tEXA10X tEXVPX tVPXA9X
A10 Reset tA10LEH
AI00736B
Note: A8 High level = 5V; A9 High level = 12V.
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M27W801
Table 11. Programming Mode AC Characteristics (1) (TA = 25 C; VCC = 6.25V 0.25V; VPP = 12.75V 0.25V)
Symbol tAVEL tQVEL tVCHEL tVPHEL tVPLVPH tELEH tEHQX tEHVPX tVPLEL tELQV tEHQZ
(2)
Alt tAS tDS tVCS tOES tPRT tPW tDH tOEH tVR tDV tDFP tAH
Parameter Address Valid to Chip Enable Low Input Valid to Chip Enable Low VCC High to Chip Enable Low VPP High to Chip Enable Low VPP Rise Time Chip Enable Program Pulse Width (Initial) Chip Enable High to Input Transition Chip Enable High to VPP Transition VPP Low to Chip Enable Low Chip Enable Low to Output Valid Chip Enable High to Output Hi-Z Chip Enable High to Address Transition
Test Condition
Min 2 2 2 2 50 45 2 2 2
Max
Unit s s s s ns
55
s s s s
1 0 0 130
s ns ns
tEHAX
Notes: 1. VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP. 2. Sampled only, not 100% tested.
Figure 7. Programming and Verify Modes AC Waveforms
A0-A19 tAVEL Q0-Q7 tQVEL VCC tVCHEL GVPP tVPHEL E DATA IN
VALID tEHAX DATA OUT tEHQX tEHQZ
tEHVPX
tELQV
tVPLEL
tELEH
PROGRAM
VERIFY
AI01270
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M27W801
PRESTO IIB Programming Algorithm PRESTO IIB Programming Algorithm allows the whole array to be programmed with a guaranteed margin, in a typical time of 52.5 seconds. This can be achieved with SGS-THOMSON M27W801 due to several design innovations to improve programming efficiency and to provide adequate margin for reliability. Before starting the programming the internal MARGIN MODE circuit is set in order to guarantee that each cell is programmed with enough margin. Then a sequenceof 50s program pulses are applied to each byte until a correct verify occurs. No overprogram pulses are applied since the verify in MARGIN MODE at VCC much higher than 3.6V, provides the necessary margin. Program Inhibit Programming of multiple M27W801s in parallel with different data is also easily accomplished. Except for E, all like inputs including GVPP of the parallel M27W801 may be common. A TTL low level pulse applied to a M27W801's E input, with VPP at 12.75V,will program that M27W801. A high level E input inhibits the other M27W801s from being programmed. Program Verify A verify (read) should be performed on the programmed bits to determine that they were correctly programmed. The verify is accomplished with G at VIL. Data should be verified with t ELQV after the falling edge of E. On-Board Programming The M27W801 can be directly programmed in the application circuit. See the relevant Application Note AN620. Electronic Signature The Electronic Signature (ES) mode allows the reading out of a binary code from an EPROM that will identify its manufacturer and type. This mode is intended for use by programming equipment to automatically match the device to be programmed with its correspondingprogramming algorithm. The ES mode is functional in the 25C 5C ambient temperature range that is required when programFigure 8. Programming Flowchart
VCC = 6.25V, VPP = 12.75V
n=0
E = 100s Pulse NO ++n = 25 YES NO VERIFY YES Last Addr NO ++ Addr
FAIL
YES CHECK ALL BYTES 1st: VCC = 6V 2nd: VCC = 2.7V
AI02362
ming the M27W801. To activate the ES mode, the programming equipmentmust force 11.5Vto 12.5V on address line A9 of the M27W801. Two identifier bytes may then be sequenced from the device outputs by toggling address line A0 from VIL to VIH. All other address lines must be held at VIL during Electronic Signature mode. Byte 0 (A0=VIL) represents the manufacturer code and byte 1 (A0=VIH) the device identifier code. For the SGS-THOMSON M27W801, these two identifier bytes are given in Table 4 and can be read-out on outputs Q0 to Q7. Note that the M27W801 and M27C801 have the same identifier byte.
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M27W801
ORDERING INFORMATION SCHEME Example: M27W801 -80 K 6 TR
Speed -80 (1,2) -100 80 ns 100 ns N NOT FOR NEW DESIGN -120 -150 -200 120 ns 150 ns 200 ns
(3)
Package K TSOP32 8 x 20mm PLCC32
Temperature Range 6 -40 to 85 C TR
Option Tape & Reel Packing
Notes: 1. High Speed, see AC Characteristics section for further information. 2. This speed also guarantees 70ns access time at VCC = 3.0V to 3.6V 3. These speeds are replaced by the 100ns.
For a list of available options (Speed, Package, etc...) or for further informationon any aspect of this device, please contact the SGS-THOMSON Sales Office nearest to you.
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M27W801
PLCC32 - 32 lead Plastic Leaded Chip Carrier, rectangular
Symb Typ A A1 A2 B B1 D D1 D2 E E1 E2 e F R N Nd Ne CP 0.89 1.27 mm Min 2.54 1.52 - 0.33 0.66 12.32 11.35 9.91 14.86 13.89 12.45 - 0.00 - 32 7 9 0.10 Max 3.56 2.41 0.38 0.53 0.81 12.57 11.56 10.92 15.11 14.10 13.46 - 0.25 - 0.035 0.050 Typ inches Min 0.100 0.060 - 0.013 0.026 0.485 0.447 0.390 0.585 0.547 0.490 - 0.000 - 32 7 9 0.004 Max 0.140 0.095 0.015 0.021 0.032 0.495 0.455 0.430 0.595 0.555 0.530 - 0.010 -
D D1
1N
A1 A2
B1
Ne
E1 E
F 0.51 (.020)
D2/E2 B
e
1.14 (.045)
Nd
A R CP
PLCC
Drawing is not to scale.
11/13
M27W801
TSOP32 - 32 lead Plastic Thin Small Outline, 8 x 20mm
Symb Typ A A1 A2 B C D D1 E e L N CP 0.50 0.05 0.95 0.15 0.10 19.80 18.30 7.90 - 0.50 0 32 0.10 mm Min Max 1.20 0.17 1.05 0.27 0.21 20.20 18.50 8.10 - 0.70 5 0.020 0.002 0.037 0.006 0.004 0.780 0.720 0.311 - 0.020 0 32 0.004 Typ inches Min Max 0.047 0.006 0.041 0.011 0.008 0.795 0.728 0.319 - 0.028 5
A2
1 N
e E B
N/2
D1 D
A CP
DIE
C
TSOP-a
Drawing is not to scale.
A1
L
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M27W801
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectronics. (c) 1998 SGS-THOMSON Microelectronics - All Rights Reserved
SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A.
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