TM4SR72EPU

TM2SR72EPU 2ā097ā152 BY 72ĆBIT TM4SR72EPU 4ā194ā304 BY 72ĆBIT SYNCHRONOUS DYNAMIC RAM MODULES SMMS683A − JUNE 1997 − REVISED AUGUST 1997 D Organization − TM2SR72EPU . . . 2 097 152 x 72 Bits − TM4SR72EPU . . . 4 194 304 x 72 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 TM2SR72EPU — Uses Nine 16M-Bit Synchronous Dynamic RAMs (SDRAMs) (2M × 8-Bit) in Plastic Thin Small-Outline Packages (TSOPs) D TM4SR72EPU — Uses 18 16M-Bit SDRAMs (2M × 8-Bit) in Plastic TSOPs D Performance Ranges: D D D D D D D D D D ’xSR72EPU-12A‡ SYNCHRONOUS CLOCK CYCLE TIME tCK3 tCK2 (CL = 3)† (CL = 2) 12 ns 15 ns ACCESS TIME (CLOCK TO OUTPUT) tCK3 tCK2 (CL = 3) (CL = 2) 9 ns 9 ns REFRESH INTERVAL 64 ms ’xSR72EPU-12 12 ns 18 ns 9 ns 10 ns † CL = CAS latency ‡ -12A speed device is supported only at −5% to +10% VDD 64 ms High-Speed, Low-Noise Low-Voltage TTL (LVTTL) Interface Byte-Read/Write Capability Read Latencies 2 and 3 Supported Support Burst-Interleave and Burst-Interrupt Operations Burst Length Programmable to 1, 2, 4, and 8 Two Banks for On-Chip Interleaving (Gapless Access) Ambient Temperature Range 0°C to 70°C Gold-Plated Contacts Pipeline Architecture Serial Presence-Detect (SPD) Using EEPROM description The TM2SR72EPU is a 16M-byte, 168-pin dual-in-line memory module (DIMM). The DIMM is composed of nine TMS626812DGE, 2 097 152 x 8-bit SDRAMs, ...