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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
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Advance Information
MCM63P631
64K x 32 Bit Pipelined BurstRAM Synchronous Fast Static RAM
The MCM63P631 is a 2M bit synchronous fast static RAM designed to provide a burstable, high performance, secondary cache for the 68K Family, PowerPCTM, and PentiumTM microprocessors. It is organized as 64K words of 32 bits each. This device integrates input registers, an output register, a 2-bit address counter, and high speed SRAM onto a single monolithic circuit for reduced parts count in cache data RAM applications. Synchronous design allows precise cycle control with the use of an external clock (K). CMOS circuitry reduces the overall power consumption of the integrated functions for greater reliability. Addresses (SA), data inputs (DQx), and all control signals except output enable (G), sleep mode (ZZ), and Linear Burst Order (LBO) are clock (K) controlled through positive-edge-triggered noninverting registers. Bursts can be initiated with either ADSP or ADSC input pins. Subsequent burst addresses can be generated internally by the MCM63P631 (burst sequence operates in linear or interleaved mode dependent upon state of LBO) and controlled by the burst address advance (ADV) input pin. Write cycles are internally self-timed and are initiated by the rising edge of the clock (K) input. This feature eliminates complex off-chip write pulse generation and provides increased timing flexibility for incoming signals. Synchronous byte write (SBx), synchronous global write (SGW), and synchronous write enable SW are provided to allow writes to either individual bytes or to all bytes. The four bytes are designated as "a", "b", "c", and "d". SBa controls DQa, SBb controls DQb, etc. Individual bytes are written if the selected byte writes SBx are asserted with SW. All bytes are written if either SGW is asserted or if all SBx and SW are asserted. For read cycles, pipelined SRAMs output data is temporarily stored by an edge-triggered output register and then released to the output buffers at the next rising edge of clock (K). The MCM63P631 operates from a 3.3 V power supply, all inputs and outputs are LVTTL compatible. * MCM63P631-117 = 4.5 ns access / 8.5 ns cycle (117 MHz) MCM63P631-4.5 = 4.5 ns access / 10 ns cycle (100 MHz) MCM63P631-7 = 7 ns access / 13.3 ns cycle (75 MHz) MCM63P631-8 = 8 ns access / 15 ns cycle (66 MHz) * Single 3.3 V + 10%, - 5% Power Supply * ADSP, ADSC, and ADV Burst Control Pins * Selectable Burst Sequencing Order (Linear/Interleaved) * Internally Self-Timed Write Cycle * Byte Write and Global Write Control * Sleep Mode (ZZ) * PB1 Version 2.0 Compatible * Single-Cycle Deselect Timing * JEDEC Standard 100-Pin TQFP Package
TQ PACKAGE TQFP CASE 983A-01
The PowerPC name is a trademark of IBM Corp., used under license therefrom. Pentium is a trademark of Intel Corp.
This document contains information on a new product. Specifications and information herein are subject to change without notice.
REV 3 8/4/97
(c) Motorola, Inc. 1997 MOTOROLA FAST SRAM
MCM63P631 1
FUNCTIONAL BLOCK DIAGRAM
LBO ADV K ADSC ADSP K2
BURST COUNTER CLR 2
2
16 64K x 32 ARRAY
SA SA1 SA0
ADDRESS REGISTER
16
14
SGW SW WRITE REGISTER a 32 32
SBa
SBb
WRITE REGISTER b 4 WRITE REGISTER c DATA-IN REGISTER K DATA-OUT REGISTER
SBc
WRITE REGISTER d SBd
K2
K
SE1 SE2 SE3 G ZZ
ENABLE REGISTER
ENABLE REGISTER
DQa - DQd
MCM63P631 2
MOTOROLA FAST SRAM
PIN ASSIGNMENT
SA SA SE1 SE2 SBd SBc SBb SBa SE3 V DD VSS K SGW SW G ADSC ADSP ADV SA SA NC DQc DQc VDD VSS DQc DQc DQc DQc VSS VDD DQc DQc NC VDD NC VSS DQd DQd VDD VSS DQd DQd DQd DQd VSS VDD DQd DQd NC 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 1 80 2 79 78 3 4 77 5 76 6 75 7 74 8 73 9 72 10 71 11 70 12 69 13 68 14 67 15 66 16 65 17 64 18 63 19 62 20 61 21 60 22 59 23 58 24 57 25 56 26 55 27 54 28 53 29 52 30 51 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 LBO SA SA SA SA SA1 SA0 NC NC VSS VDD NC NC SA SA SA SA SA SA NC
NC DQb DQb VDD VSS DQb DQb DQb DQb VSS VDD DQb DQb VSS NC VDD ZZ DQa DQa VDD VSS DQa DQa DQa DQa VSS VDD DQa DQa NC
MOTOROLA FAST SRAM
MCM63P631 3
PIN DESCRIPTIONS
Pin Locations 85 Symbol ADSC Type Input Description Synchronous Address Status Controller: Active low, is used to latch a new external address. Used to initiate a READ, WRITE or chip deselect. Synchronous Address Status Processor: Initiates READ or chip deselect cycle (exception -- chip deselect does not occur when ADSP is asserted and SE1 is high). Synchronous Address Advance: Increments address count in accordance with counter type selected (linear/interleaved). Synchronous Data I/O: "x" refers to the byte being read or written (byte a, b, c, d).
84
ADSP
Input
83 (a) 52, 53, 56, 57, 58, 59, 62, 63 (b) 68, 69, 72, 73, 74, 75, 78, 79 (c) 2, 3, 6, 7, 8, 9, 12, 13 (d) 18, 19, 22, 23, 24, 25, 28, 29 86 89 31
ADV DQx
Input I/O
G K LBO
Input Input Input
Asynchronous Output Enable. Clock: This signal registers the address, data in, and all control signals except G, LBO, and ZZ. Linear Burst Order Input: This pin must remain in steady state (this signal not registered or latched). It must be tied high or low. Low -- linear burst counter (68K/PowerPC). High -- interleaved burst counter (486/i960/Pentium). Synchronous Address Inputs: These inputs are registered and must meet setup and hold times. Synchronous Address Inputs: These pins must be wired to the two LSBs of the address bus for proper burst operation. These inputs are registered and must meet setup and hold times. Synchronous Byte Write Inputs: "x" refers to the byte being written (byte a, b, c, d). SGW overrides SBx. Synchronous Chip Enable: Active low to enable chip. Negated high -- blocks ADSP or deselects chip when ADSC is asserted. Synchronous Chip Enable: Active high for depth expansion. Synchronous Chip Enable: Active low for depth expansion. Synchronous Global Write: This signal writes all bytes regardless of the status of the SBx and SW signals. If only byte write signals SBx are being used, tie this pin high. Synchronous Write: This signal writes only those bytes that have been selected using the byte write SBx pins. If only byte write signals SBx are being used, tie this pin low. Sleep Mode: This active high asynchronous signal places the RAM into the lowest power mode. The ZZ pin disables the RAMs internal clock when placed in this mode. When ZZ is negated, the RAM remains in low power mode until it is commanded to READ or WRITE. Data integrity is maintained upon returning to normal operation. Power Supply: 3.3 V + 10%, - 5%. Ground. No Connection: There is no connection to the chip.
32, 33, 34, 35, 44, 45, 46, 47, 48, 49, 81, 82, 99, 100 36, 37
SA SA1, SA0
Input Input
93, 94, 95, 96 (a) (b) (c) (d) 98
SBx SE1
Input Input
97 92 88
SE2 SE3 SGW
Input Input Input
87
SW
Input
64
ZZ
Input
4, 11, 15, 20, 27, 41, 54, 61, 65, 70, 77, 91 5, 10, 17, 21, 26, 40, 55, 60, 67, 71, 76, 90 1, 14, 16, 30, 38, 39, 42, 43, 50, 51, 66, 80
VDD VSS NC
Supply Supply --
MCM63P631 4
MOTOROLA FAST SRAM
TRUTH TABLE (See Notes 1 through 5)
Next Cycle Deselect Deselect Deselect Deselect Deselect Begin Read Begin Read Continue Read Continue Read Continue Read Continue Read Suspend Read Suspend Read Suspend Read Suspend Read Begin Write Continue Write Continue Write Suspend Write Suspend Write Address Used None None None None None External External Next Next Next Next Current Current Current Current External Next Next Current Current SE1 1 0 0 X X 0 0 X X 1 1 X X 1 1 0 X 1 X 1 SE2 X X 0 X 0 1 1 X X X X X X X X 1 X X X X SE3 X 1 X 1 X 0 0 X X X X X X X X 0 X X X X ADSP X 0 0 1 1 0 1 1 1 X X 1 1 X X 1 1 X 1 X ADSC 0 X X 0 0 X 0 1 1 1 1 1 1 1 1 0 1 1 1 1 ADV X X X X X X X 0 0 0 0 1 1 1 1 X 0 0 1 1 G3 X X X X X X X 1 0 1 0 1 0 1 0 X X X X X DQx High-Z High-Z High-Z High-Z High-Z High-Z High-Z High-Z DQ High-Z DQ High-Z DQ High-Z DQ High-Z High-Z High-Z High-Z High-Z Write 2, 4 X X X X X READ5 READ5 READ READ READ READ READ READ READ READ WRITE WRITE WRITE WRITE WRITE
NOTES: 1. X = Don't Care. 1 = logic high. 0 = logic low. 2. Write is defined as either 1) any SBx and SW low or 2) SGW is low. 3. G is an asynchronous signal and is not sampled by the clock K. G drives the bus immediately (tGLQX) following G going low. 4. On write cycles that follow read cycles, G must be negated prior to the start of the write cycle to ensure proper write data setup times. G must also remain negated at the completion of the write cycle to ensure proper write data hold times. 5. This READ assumes the RAM was previously deselected.
MOTOROLA FAST SRAM
MCM63P631 5
ASYNCHRONOUS TRUTH TABLE
Operation Read Read Write Deselected Sleep ZZ L L L L H G L H X X X I/O Status Data Out (DQx) High-Z High-Z High-Z High-Z
LINEAR BURST ADDRESS TABLE (LBO = VSS)
1st Address (External) X . . . X00 X . . . X01 X . . . X10 X . . . X11 2nd Address (Internal) X . . . X01 X . . . X10 X . . . X11 X . . . X00 3rd Address (Internal) X . . . X10 X . . . X11 X . . . X00 X . . . X01 4th Address (Internal) X . . . X11 X . . . X00 X . . . X01 X . . . X10
INTERLEAVED BURST ADDRESS TABLE (LBO = VDD)
1st Address (External) X . . . X00 X . . . X01 X . . . X10 X . . . X11 2nd Address (Internal) X . . . X01 X . . . X00 X . . . X11 X . . . X10 3rd Address (Internal) X . . . X10 X . . . X11 X . . . X00 X . . . X01 4th Address (Internal) X . . . X11 X . . . X10 X . . . X01 X . . . X00
WRITE TRUTH TABLE
Cycle Type Read Read Write Byte a Write Byte b Write Byte c Write Byte d Write All Bytes Write All Bytes SGW H H H H H H H L SW H L L L L L L X SBa X H L H H H L X SBb X H H L H H L X SBc X H H H L H L X SBd X H H H H L L X
MCM63P631 6
MOTOROLA FAST SRAM
ABSOLUTE MAXIMUM RATINGS (See Note 1)
Rating Power Supply Voltage Voltage Relative to VSS for Any Pin Except VDD Output Current (per I/O) Package Power Dissipation Ambient Temperature Die Temperature Temperature Under Bias Storage Temperature Symbol VDD Vin, Vout Iout PD TA TJ Tbias Tstg Value - 0.5 to + 4.6 - 0.5 to VDD + 0.5 20 1.6 0 to 70 110 - 10 to 85 - 55 to 125 Unit V V mA W C C C C 2 2 Notes This device contains circuitry to protect the inputs against damage due to high static voltages or electric fields; however, it is advised that normal precautions be taken to avoid application of any voltage higher than maximum rated voltages to this high-impedance circuit.
NOTES: 1. Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS are exceeded. Functional operation should be restricted to RECOMMENDED OPERATING CONDITIONS. Exposure to higher than recommended voltages for extended periods of time could affect device reliability. 2. Power dissipation capability is dependent upon package characteristics and use environment. See Package Thermal Characteristics.
PACKAGE THERMAL CHARACTERISTICS
Rating Junction to Ambient (@ 200 lfm) Junction to Board (Bottom) Junction to Case (Top) Single Layer Board Four Layer Board Symbol RJA RJB RJC Max 40 25 17 9 Unit C/W C/W C/W Notes 1, 2 3 4
NOTES: 1. Junction temperature is a function of on-chip power dissipation, package thermal resistance, mounting site (board) temperature, ambient temperature, air flow, board population, and board thermal resistance. 2. Per SEMI G38-87. 3. Indicates the average thermal resistance between the die and the printed circuit board. 4. Indicates the average thermal resistance between the die and the case top surface via the cold plate method (MIL SPEC-883 Method 1012.1).
MOTOROLA FAST SRAM
MCM63P631 7
DC OPERATING CONDITIONS AND CHARACTERISTICS
(VDD = 3.3 V + 10%, - 5%, TA = 0 to 70C, Unless Otherwise Noted) RECOMMENDED OPERATING CONDITIONS (Voltages Referenced to VSS = 0 V)
Parameter Supply Voltage Input Low Voltage Input High Voltage * VIL - 1 V for t tKHKH/2. ** VIH VDD + 1 V for t tKHKH/2. Symbol VDD VIL VIH Min 3.135 - 0.5* 2.0** Typ 3.3 -- -- Max 3.6 0.8 VDD + 0.5 Unit V V V
DC CHARACTERISTICS AND SUPPLY CURRENTS
Parameter Input Leakage Current (0 V Vin VDD) Output Leakage Current (0 V Vin VDD) AC Supply Current (Device Selected, All Outputs Open, Freq = Max, VDD = Max) q ) MCM63P631-117 MCM63P631-4.5 MCM63P631-7 MCM P MCM63P631-8 Symbol Ilkg(I) Ilkg(O) IDDA Min -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 2.4 Typ -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Max 1 1 TBD 275 220 200 2 2 25 TBD 145 115 105 TBD 65 50 50 0.4 -- Unit A A mA 3, 4, 5 Notes 1, 2
CMOS Standby Supply Current (Device Deselected, Freq = 0, VDD = Max, All Inputs Static at CMOS Levels) Sleep Mode Supply Current (Sleep Mode, Freq = Max, VDD = Max, All Other Inputs Static at CMOS Levels, ZZ VDD - 0.2 V) TTL Standby (Device Deselected, Freq = 0, VDD = Max, All Inputs Static at TTL Levels) Clock Running (Device Deselected, Freq = Max, VDD = Max, All Inputs Toggling at CMOS Levels) p gg g ) MCM63P631-117 MCM63P631-4.5 MCM P MCM63P631-7 MCM63P631-8 MCM63P631-117 MCM63P631-4.5 MCM63P631-7 MCM63P631-8
ISB2 IZZ ISB3 ISB4
mA mA mA mA
6, 7 2, 7, 8 6, 9 6, 7
Static Clock Running (Device Deselected, Freq = Max, VDD = Max, All Inputs Static at TTL Levels)
ISB5
mA
6, 9
Output Low Voltage (IOL = 8 mA) Output High Voltage (IOH = - 4 mA)
VOL VOH
V V
NOTES: 1. LBO pin has an internal pullup and will exhibit leakage currents of 5 A. 2. ZZ pin has an internal pulldown and will exhibit leakage currents of 5 A. 3. Reference AC Operating Conditions and Characteristics for input and timing (VIH/VIL, tr/tf, pulse level 0 to 3.0 V). 4. All addresses transition simultaneously low (LSB) and then high (MSB). 5. Data states are all zero. 6. Device in Deselected mode as defined by the Truth Table. 7. CMOS levels are Vin VSS + 0.2 V or VDD - 0.2 V. 8. Device in Sleep Mode as defined by the Asynchronous Truth Table. 9. TTL levels are Vin VIL or VIH.
CAPACITANCE (f = 1.0 MHz, dV = 3.0 V, TA = 0 to 70C, Periodically Sampled Rather Than 100% Tested)
Parameter Input Capacitance Input/Output Capacitance Symbol Cin CI/O Min -- -- Typ 3 6 Max 5 8 Unit pF pF
MCM63P631 8
MOTOROLA FAST SRAM
AC OPERATING CONDITIONS AND CHARACTERISTICS
(VDD = 3.3 V + 10%, - 5%, TA = 0 to 70C, Unless Otherwise Noted)
Input Timing Measurement Reference Level . . . . . . . . . . . . . . . 1.5 V Input Pulse Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 3.0 V Input Rise/Fall Time . . . . . . . . . . . . . . . . . . . . . . . 1 V/ns (20 to 80%) Output Timing Reference Level . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 V Output Load . . . . . . . . . . . . . . See Figure 1 Unless Otherwise Noted
READ/WRITE CYCLE TIMING (See Notes 1, 2, 3, and 4)
63P631-117 117 MHz Parameter Cycle Time Clock High Pulse Width Clock Low Pulse Width Clock Access Time Output Enable to Output Valid Clock High to Output Active Clock High to Output Change Output Enable to Output Active Output Disable to Q High-Z Clock High to Q High-Z Setup Times: Address ADSP, ADSC, ADV Data In Write Chip Enable Hold Times: Address ADSP, ADSC, ADV Data In Write Chip Enable Sleep Mode Standby Sleep Mode Recovery Sleep Mode High to Q High-Z tKHAX tKHADSX tKHDX tKHWX tKHEX tZZS tZZREC tZZQZ -- 2x tKHKH -- 2x tKHKH -- 15 -- 2x tKHKH -- 2x tKHKH -- 15 -- 2x tKHKH -- 2x tKHKH -- 15 -- 2x tKHKH -- 2x tKHKH -- 15 ns ns ns tADKH tADSKH tDVKH tWVKH tEVKH 0.5 -- 0.5 -- 0.5 -- 0.5 -- ns Symbol tKHKH tKHKL tKLKH tKHQV tGLQV tKHQX1 tKHQX2 tGLQX tGHQZ tKHQZ Min 8.5 3.6 3.6 -- -- 0 1.5 0 -- 1.5 2.5 Max -- -- -- 4.5 4.5 -- -- -- 5.5 5.5 -- 63P631-4.5 100 MHz Min 10 4 4 -- -- 0 1.5 0 -- 1.5 2.5 Max -- -- -- 4.5 4.5 -- -- -- 5.5 5.5 -- 63P631-7 75 MHz Min 13.3 5.3 5.3 -- -- 0 1.5 0 -- 2 2.5 Max -- -- -- 7 5 -- -- -- 7 7 -- 63P631-8 66 MHz Min 15 6 6 -- -- 0 1.5 0 -- 2 2.5 Max -- -- -- 8 5 -- -- -- 8 8 -- Unit ns ns ns ns ns ns ns ns ns ns ns 5 5 5 5, 6 5, 6 Notes
NOTES: 1. Write applies to all SBx, SW, and SGW signals when the chip is selected and ADSP high. 2. Chip Enable applies to all SE1, SE2 and SE3 signals whenever ADSP or ADSC is asserted. 3. All read and write cycle timings are referenced from K or G. 4. G is a don't care after write cycle begins. To prevent bus contention, G should be negated prior to start of write cycle. 5. This parameter is sampled and is not 100% tested. 6. Measured at 200 mV from steady state.
OUTPUT Z0 = 50 RL = 50 VT = 1.5 V
Figure 1. AC Test Load
MOTOROLA FAST SRAM
MCM63P631 9
READ/WRITE CYCLES
tKHKL tKLKH
MCM63P631 10
B C D t KHQV BURST WRAPS AROUND Q(A) tKHQX2 Q(B) Q(B+1) Q(B+2) Q(B+3) tGHQZ Q(B) D(C) ADSP, SA SE2, SE3 IGNORED BURST READ BURST WRITE D(C+1) D(C+2) D(C+3) tGLQX Q(D) SINGLE READ
tKHKH
K
SA
A
ADSP
ADSC
ADV
SE1
E
W
G
t KHQV
DQx
Q(n-1)
tKHQZ
tKHQX1
DESELECTED
SINGLE READ
MOTOROLA FAST SRAM
Note: E low = SE2 high and SE3 low. W low = SGW low and / or SW and SBx low.
EEEEEEEEEEEEEE EEEEEEEEEEEEEE EEEEEEEEEEEEEE EEEEEEEEEEEEEE EEEEEEEEEEEEEE EEEEEEEEEEEEEE
tZZQZ tZZS
EEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEE
I ZZ tZZREC
MOTOROLA FAST SRAM
ADV ADS DQ ZZ W G E K ADDR IDD NORMAL OPERATION NO NEW READS OR WRITES ALLOWED
MCM63P631 11
NOTE: ADS low = ADSC low or ADSP low. ADS high = both ADSC, ADSP high. E low = SE1 low, SE2 high, SE3 low. IZZ (max) specifications will not be met if inputs toggle.
SLEEP MODE TIMING
IN SLEEP MODE NO READS OR WRITES ALLOWED NORMAL OPERATION
APPLICATION INFORMATION
The MCM63P631 BurstRAM is a high speed synchronous SRAM intended for use primarily in secondary or level two (L2) cache memory applications. L2 caches are found in a variety of classes of computers -- from the desktop personal computer to the high-end servers and transaction processing machines. For simplicity, the majority of L2 caches today are direct mapped and are single bank implementations. These caches tend to be designed for bus speeds in the range of 33 to 66 MHz. At these bus rates, non-pipelined (flow-through) BurstRAMs can be used since their access times meet the speed requirements for a minimum-latency, zero-wait state L2 cache interface. Latency is a measure (time) of "dead" time the memory system exhibits as a result of a memory request. For those applications that demand bus operation at greater than 66 MHz or multi-bank L2 caches at 66 MHz, the pipelined (register/register) version of the 64K x 32 BurstRAM (MCM63P631) allows the designer to maintain zero-wait state operation. Multiple banks of BurstRAMs create additional bus loading and can cause the system to otherwise miss its timing requirements. The access time (clock-to-valid-data) of a pipelined BurstRAM is inherently faster than a non-pipelined device by a few nanoseconds. This does not come without cost. The cost is latency -- "dead" time. Since most L2 caches are tied to the processor bus and bus speeds continue to increase over time, pipelined (R/R) BurstRAMs are the best choice in achieving zero-wait state L2 cache performance. For cost-sensitive applications that require zero-wait state L2 cache bus speeds of up to 75 MHz, pipelined BurstRAMs are able to provide fast clock to valid data times required of these high speed buses. SLEEP MODE A sleep mode feature, the ZZ pin, has been implemented on the MCM63P631. It allows the system designer to place the RAM in the lowest possible power condition by asserting ZZ. The sleep mode timing diagram shows the different modes of operation: Normal Operation, No READ/WRITE Allowed, and Sleep Mode. Each mode has its own set of constraints and conditions that are allowed. Normal Operation: All inputs must meet setup and hold times prior to sleep and t ZZREC nanoseconds after recovering from sleep. Clock (K) must also meet cycle, high, and low times during these periods. Two cycles prior to sleep, initiation of either a read or write operation is not allowed. No READ/WRITE: During the period of time just prior to sleep and during recovery from sleep, the assertion of either ADSC, ADSP, or any write signal is not allowed. If a write operation occurs during these periods, the memory array may be corrupted. Validity of data out from the RAM can not be guaranteed immediately after ZZ is asserted (prior to being in sleep). Sleep Mode: The RAM automatically deselects itself. The RAM disconnects its internal clock buffer. The external clock may continue to run without impacting the RAMs sleep current (IZZ). All inputs are allowed to toggle -- the RAM will not be selected and perform any reads or writes. However, if inputs toggle, the IZZ (max) specification will not be met. NON-BURST SYNCHRONOUS OPERATION Although this BurstRAM has been designed for PowerPC- and Pentium-based systems, these SRAMs can be used in other high speed L2 cache or memory applications that do not require the burst address feature. Most L2 caches designed with a synchronous interface can make use of the MCM63P631. The burst counter feature of the BurstRAM can be disabled, and the SRAM can be configured to act upon a continuous stream of addresses. See Figure 2. CONTROL PIN TIE VALUES (H VIH, L VIL)
Non-Burst Sync Non-Burst, Pipelined SRAM ADSP H ADSC L ADV H SE1 L LBO X
NOTE: Although X is specified in the table as a don't care, the pin must be tied either high or low.
MCM63P631 12
MOTOROLA FAST SRAM
K
ADDR
A
B
C
D
E
F
G
H
W
G
DQx
Q(A)
Q(B)
Q(C)
Q(D)
D(E)
D(F)
D(G)
D(H)
READS
WRITES
Figure 2. Configured as Non-Burst Pipelined Synchronous SRAM
MOTOROLA FAST SRAM
MCM63P631 13
ORDERING INFORMATION
(Order by Full Part Number) MCM
Motorola Memory Prefix Part Number
63P631
XX
X
X
Blank = Trays, R = Tape and Reel Speed (117 = 117 MHz, 4.5 = 4.5 ns, 7 = 7 ns, 8 = 8 ns) Package (TQ = TQFP)
Full Part Numbers -- MCM63P631TQ117 MCM63P631TQ117R MCM63P631TQ7 MCM63P631TQ7R
MCM63P631TQ4.5 MCM63P631TQ4.5R MCM63P631TQ8 MCM63P631TQ8R
MCM63P631 14
MOTOROLA FAST SRAM
PACKAGE DIMENSIONS
TQ PACKAGE TQFP CASE 983A-01
4X
0.20 (0.008) H A-B D
2X 30 TIPS
e 0.20 (0.008) C A-B D e/2
-D-
80 81 51 50
B E/2 B VIEW Y E1 E E1/2
BASE METAL PLATING
-A-
-B-
-X- X=A, B, OR D
b1
100 1 30 31
c
D1/2 D1 D
2X 20 TIPS
D/2
0.13 (0.005)
0.20 (0.008) C A-B D
A -H- -C-
SEATING PLANE
q
2
0.10 (0.004) C
q
3 VIEW AB
0.05 (0.002)
S
S
q
1 0.25 (0.010)
GAGE PLANE
A2
R2
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DATUM PLANE -H- IS LOCATED AT BOTTOM OF LEAD AND IS COINCIDENT WITH THE LEAD WHERE THE LEAD EXITS THE PLASTIC BODY AT THE BOTTOM OF THE PARTING LINE. 4. DATUMS -A-, -B- AND -D- TO BE DETERMINED AT DATUM PLANE -H-. 5. DIMENSIONS D AND E TO BE DETERMINED AT SEATING PLANE -C-. 6. DIMENSIONS D1 AND E1 DO NOT INCLUDE MOLD PROTRUSION. ALLOWABLE PROTRUSION IS 0.25 (0.010) PER SIDE. DIMENSIONS D1 AND B1 DO INCLUDE MOLD MISMATCH AND ARE DETERMINED AT DATUM PLANE -H-. 7. DIMENSION b DOES NOT INCLUDE DAMBAR PROTRUSION. DAMBAR PROTRUSION SHALL NOT CAUSE THE b DIMENSION TO EXCEED 0.45 (0.018). MILLIMETERS MIN MAX --- 1.60 0.05 0.15 1.35 1.45 0.22 0.38 0.22 0.33 0.09 0.20 0.09 0.16 22.00 BSC 20.00 BSC 16.00 BSC 14.00 BSC 0.65 BSC 0.45 0.75 1.00 REF 0.50 REF 0.20 --- 0.08 --- 0.08 0.20 0_ 7_ 0_ --- 11 _ 13 _ 11 _ 13 _ INCHES MIN MAX --- 0.063 0.002 0.006 0.053 0.057 0.009 0.015 0.009 0.013 0.004 0.008 0.004 0.006 0.866 BSC 0.787 BSC 0.630 BSC 0.551 BSC 0.026 BSC 0.018 0.030 0.039 REF 0.020 REF 0.008 --- 0.003 --- 0.003 0.008 0_ 7_ 0_ --- 11 _ 13 _ 11 _ 13 _
A1
R1
L2 L L1 VIEW AB
q
DIM A A1 A2 b b1 c c1 D D1 E E1 e L L1 L2 S R1 R2
q
1 2 q3
q q
MOTOROLA FAST SRAM
EEEE CCCC EEEE CCCC
b
M
c1
C A-B
S
D
S
SECTION B-B
MCM63P631 15
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. "Typical" parameters which may be provided in Motorola data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer. Mfax is a trademark of Motorola, Inc. How to reach us: USA / EUROPE / Locations Not Listed: Motorola Literature Distribution; P.O. Box 5405, Denver, Colorado 80217. 1-303-675-2140 or 1-800-441-2447 Customer Focus Center: 1-800-521-6274 MfaxTM: RMFAX0@email.sps.mot.com - TOUCHTONE 1-602-244-6609 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, Motorola Fax Back System - US & Canada ONLY 1-800-774-1848 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852-26629298 - http://sps.motorola.com/mfax/ HOME PAGE: http://motorola.com/sps/ JAPAN: Nippon Motorola Ltd.: SPD, Strategic Planning Office, 4-32-1, Nishi-Gotanda, Shinagawa-ku, Tokyo 141, Japan. 81-3-5487-8488
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MCM63P631/D MOTOROLA FAST SRAM

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