TM8LR64JFN Datasheet, PDF (1/17 Pages) Texas Instruments – SYNCHRONOUS DYNAMIC RAM MODULES

D Organization:
− TM8LR64JFN . . . 8 388 608 × 64 Bits
− TM16LR64JFN . . . 16 777 216 × 64 Bits
D Designed for 100-MHz 4-Clock Systems
D JEDEC 168-Pin Dual-In-Line Memory
Module (DIMM) Without Buffer for Use With
Socket
D TM8LR64JFN — Uses Eight 64M-Bit
Synchronous Dynamic RAMs (SDRAMs)
(8M × 8-Bit) in Plastic Thin Small-Outline
Packages (TSOPs)
D TM16LR64JFN — Uses Sixteen 64M-Bit
SDRAMs (8M × 8-Bit) in Plastic TSOPs
D Performance Ranges:
D Single 3.3-V Power Supply
(±10% Tolerance)
D Byte-Read/Write Capability
TM8LR64JFN 8 388 608 BY 64ĆBIT
TM16LR64JFN 16 777 216 BY 64ĆBIT
SYNCHRONOUS DYNAMIC RAM MODULES
SMMS710 − MAY 1998
D High-Speed, Low-Noise, Low-Voltage TTL
(LVTTL) Interface
D Read Latencies 2 and 3 Supported
D Supports Burst-Interleave and
Burst-Interrupt Operations
D Burst Length Programmable to 1, 2, 4,
and 8
D Four Banks for On-Chip Interleaving
(Gapless Access)
D Ambient Temperature Range
0°C to 70°C
D Electroless Gold-Finished Contacts
D Pipeline Architecture
D Serial Presence-Detect (SPD) Using
EEPROM
’xLR64JFN-8
’xLR64JFN-8A
SYNCHRONOUS
CLOCK CYCLE
TIME
tCK3
tCK2
8 ns
10 ns
8 ns
10 ns
ACCESS TIME
CLOCK TO
OUTPUT
tAC3
tAC2
6 ns
6 ns
6 ns
7.5 ns
REFRESH
INTERVAL
tREF
64 ms
64 ms
description
The TM8LR64JFN is a 64M-byte, 168-pin dual-in-line memory module (DIMM). The DIMM is composed of eight
TMS664814DGE 8 388 608 x 8-bit SDRAMs, each in a 400-mil, 54-pin plastic thin small-outline package
(TSOP) mounted on a substrate with decoupling capacitors. See the TMS664814 data sheet (literature number
SMOS695).
The TM16LR64JFN is a 128M-byte, 168-pin DIMM. The DIMM is composed of sixteen TMS664814DGE
8 388 608 x 8-bit SDRAMs, each in a 400-mil, 54-pin plastic TSOP mounted on a substrate with decoupling
capacitors.
operation
The TM8LR64JFN operates as eight TMS664814DGE devices that are connected as shown in the
TM8LR64JFN functional block diagram. The TM16LR64JFN operates as 16 TMS664814DGE devices
connected as shown in the TM16LR64JFN 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  1998, Texas Instruments Incorporated
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