TM2SN64EPH Datasheet, PDF (1/15 Pages) Texas Instruments – SYNCHRONOUS DYNAMIC RAM MODULES

TM2SN64EPH 2ā097ā152 BY 64ĆBIT
TM4SN64EPH 4ā194ā304 BY 64ĆBIT
SYNCHRONOUS DYNAMIC RAM MODULES
SMMS706A − MARCH 1998 − REVISED APRIL 1998
D Organization:
− TM2SN64EPH . . . 2 097 152 x 64 Bits
− TM4SN64EPH . . . 4 194 304 x 64 Bits
D Single 3.3-V Power Supply
(±10% Tolerance)
D Designed for 66-MHz 4-Clock Systems
D JEDEC 168-Pin Dual-In-Line Memory
Module (DIMM) Without Buffer for Use With
Socket
D TM2SN64EPH — Uses Eight 16M-Bit
Synchronous Dynamic RAMs (SDRAMs)
(2M × 8-Bit) in Plastic Thin Small-Outline
Packages (TSOPs)
D TM4SN64EPH — Uses Sixteen 16M-Bit
SDRAMs (2M × 8-Bit) in Plastic TSOPs
D Byte-Read/Write Capability
D Performance Ranges:
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)
’xSN64EPH-10
10 ns
† _{CL = CAS latency}
15 ns
ACCESS TIME
CLOCK TO
OUTPUT
tAC3
tAC2
(CL = 3) (CL = 2)
7.5 ns 7.5 ns
REFRESH
INTERVAL
64 ms
description
The TM2SN64EPH is a 16M-byte, 168-pin dual-in-line memory module (DIMM). The DIMM is composed of
eight TMS626812BDGE, 2097152 x 8-bit SDRAMs, each in a 400-mil, 44-pin plastic thin small-outline package
(TSOP) mounted on a substrate with decoupling capacitors. See the TMS626812B data sheet (literature
number SMOS693).
The TM4SN64EPH 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.
operation
The TM2SN64EPH operates as eight TMS626812BDGE devices that are connected as shown in the
TM2SN64EPH functional block diagram. The TM4SN64EPH operates as sixteen TMS626812BDGE devices
connected as shown in the TM4SN64EPH 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.
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
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