TM4EN64KPU Datasheet, PDF (1/20 Pages) Texas Instruments – EXTENDED-DATA-OUT DYNAMIC RAM MODULES

TM4EN64KPU, TM4EN64NPU 4194304 BY 64ĆBIT
TM8EN64KPU, TM8EN64NPU 8388608 BY 64ĆBIT
EXTENDEDĆDATAĆOUT DYNAMIC RAM MODULES
SMMS692 − AUGUST 1997
D Organization
− TM4EN64xPU-xx . . . 4 194 304 × 64 Bits
− TM8EN64xPU-xx . . . 8388608 × 64 Bits
D Single 3.3-V Power Supply
(±10% Tolerance)
D JEDEC 168-Pin Dual-In-Line Memory
Module (DIMM) Without Buffer for Use With
Socket
D TM4EN64xPU-xx — Utilizes Four 64M-Bit
High-Speed (4M × 16-Bit) Dynamic RAMs
D TM8EN64xPU-xx — Utilizes Eight 64M-Bit
High-Speed (4M × 16-Bit) Dynamic RAMs
D High-Speed, Low-Noise LVTTL Interface
D High-Reliability 50-Lead 400-Mil-Wide
Surface-Mount Thin Small-Outline Package
(TSOP) (DGE Suffix)
D Long Refresh Periods:
− TMxEN64KPU: 64 ms (4 096 Cycles)
− TMxEN64NPU: 64 ms (8192 Cycles)
D 3-State Output
D Extended-Data-Out (EDO) Operation With
CAS-Before-RAS (CBR), RAS-Only, and
Hidden Refresh
D Serial-Presence-Detect (SPD) Using
EEPROM
D Ambient Temperature Range
0°C to 70°C
D Gold-Plated Contacts
D Performance Ranges
ACCESS ACCESS ACCESS EDO
TIME
TIME TIME CYCLE
tRAC
(MAX)
tCAC
tAA tHPC
(MAX) (MAX) (MIN)
’xEN64xPU−40 40 ns
11 ns 20 ns 16 ns
’xEN64xPU−50 50 ns
13 ns 25 ns 20 ns
’xEN64xPU−60 60 ns
15 ns 30 ns 25 ns
description
The TM4EN64KPU is a 32M-byte, 168-pin, dual-in-line memory module (DIMM). The DIMM is composed of four
TMS465169, 4194 304 × 16-bit 4K-refresh EDO dynamic random-access memory (DRAM) devices, each in a
400-mil, 50-pin plastic thin small-outline package (TSOP) (DGE suffix) mounted on a substrate with decoupling
capacitors. See the TMS465169 data sheet (literature number SMHS566).
The TM4EN64NPU is a 32M-byte, 168-pin DIMM. The DIMM is composed of four TMS464169,
4 194 304 × 16-bit 8K-refresh EDO DRAMs, each in a 400-mil, 50-pin plastic TSOP (DGE suffix) mounted on
a substrate with decoupling capacitors. See the TMS464169 data sheet (literature number SMHS566).
The TM8EN64KPU is a 64M-byte ,168-pin DIMM. The DIMM is composed of eight TMS465169, 41934304 ×
16-bit 4K-refresh EDO DRAMs, each in a 400-mil, 50-pin plastic TSOP (DGE suffix) mounted on a substrate
with decoupling capacitors. See the TMS465169 data sheet (literature number SMHS566).
The TM8EN64NPU is a 64M-byte ,168-pin DIMM. The DIMM is composed of eight TMS464169, 41934304 ×
16-bit 8K-refresh EDO DRAMs, each in a 400-mil, 50-pin plastic TSOP (DGE suffix) mounted on a substrate
with decoupling capacitors. See the TMS464169 data sheet (literature number SMHS566).
operation
The TM4EN64xPU operates as four TMS46x169s that are connected as shown in the TM4EN64xPU functional
block diagram. The TM8EN64xPU operates as 18 TMS46x169s that are connected as shown in the
TM8EN64xPU functional block diagram.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
Copyright  1997, Texas Instruments Incorporated
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