TM2TR64EPH Datasheet, PDF (1/22 Pages) Texas Instruments – SYNCHRONOUS DYNAMIC RAM MODULES

D Organization:
− TM2TR64EPH . . . 2 097 152 x 64 Bits
− TM4TR64EPH . . . 4 194 304 x 64 Bits
− TM2TR72EPH . . . 2 097 152 x 72 Bits
− TM4TR72EPH . . . 4 194 304 x 72 Bits
D Single 3.3-V Power Supply
(±10% Tolerance)
D Designed for 100-MHz 4-Clock Systems
D TM2TR64EPH — Uses Eight 16M-Bit
Synchronous Dynamic RAMs (SDRAMs)
(2M × 8-Bit) in Plastic Thin Small-Outline
Packages (TSOPs)
D TM4TR64EPH — Uses Sixteen 16M-Bit
SDRAMs (2M × 8-Bit) in Plastic TSOPs
D TM2TR72EPH — Uses Nine 16M-Bit
SDRAMs (2M × 8-Bit) in Plastic TSOPs
D TM4TR72EPH — Uses Eighteen 16M-Bit
SDRAMs (2M × 8-Bit) in Plastic TSOPs
D Byte-Read/Write Capability
D Performance Ranges:
TM2TR64EPH, TM4TR64EPH
TM2TR72EPH, TM4TR72EPH
SYNCHRONOUS DYNAMIC RAM MODULES
SMMS702B − JANUARY 1998 − REVISED APRIL 1998
D JEDEC 168-Pin Dual-In-Line Memory
Module (DIMM) Without Buffer for Use With
Socket
D High-Speed, Low-Noise, Low-Voltage TTL
(LVTTL) Interface
D Read Latencies 2 and 3 Supported
D Support Burst-Interleave and
Burst-Interrupt Operations
D Burst Length Programmable to 1, 2, 4,
and 8
D Two Banks for On-Chip Interleaving
(Gapless Access)
D Ambient Temperature Range
0°C to 70°C
D Gold-Plated Contacts
D Pipeline Architecture
D Serial Presence Detect (SPD) Using
EEPROM
SYNCHRONOUS
CLOCK CYCLE
TIME
(CtLC=K33)^†
tCK2
(CL = 2)
’xTRxxEPH-8
8 ns
10 ns
’xTRxxEPH-8A
8 ns
† _{CL = CAS latency}
15 ns
ACCESS TIME
CLOCK TO
OUTPUT
tAC3
tAC2
(CL = 3) (CL = 2)
6 ns
6 ns
6 ns
7.5 ns
REFRESH
INTERVAL
64 ms
64 ms
description
The TM2TR64EPH is a 16M-byte, 168-pin DIMM. The DIMM is composed of eight TMS626812BDGE 2097 152
x 8-bit SDRAMs, each in a 400-mil, 44-pin plastic TSOP mounted on a substrate with decoupling capacitors.
See the TMS626812B data sheet (literature number SMOS693).
The TM4TR64EPH is a 32M-byte, 168-pin DIMM. The DIMM is composed of sixteen TMS626812BDGE
2 097 152 x 8-bit SDRAMs, each in a 400-mil, 44-pin plastic TSOP mounted on a substrate with decoupling
capacitors.
The TM2TR72EPH is an 16M-byte, 168-pin DIMM. The DIMM is composed of nine TMS626812BDGE
2 097 152 x 8-bit SDRAMs, each in a 400-mil, 44-pin plastic TSOP mounted on a substrate with decoupling
capacitors.
The TM4TR72EPH is a 32M-byte, 168-pin DIMM. The DIMM is composed of eighteen TMS626812BDGE
2 097 152 x 8-bit SDRAMs, each in a 400-mil, 44-pin plastic TSOP mounted on a substrate with decoupling
capacitors.
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.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright  1998, Texas Instruments Incorporated
• POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
1