TM4SR72EPN

TM2SR72EPN 2ā097ā152 BY 72ĆBIT TM4SR72EPN 4ā194ā304 BY 72ĆBIT SYNCHRONOUS DYNAMIC RAM MODULES SMMS698A − JUNE 1997 − REVISED FEBRUARY 1998 D Organization − TM2SR72EPN . . . 2 097 152 x 72 Bits − TM4SR72EPN . . . 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 TM2SR72EPN — Uses Nine 16M-Bit Synchronous Dynamic RAMs (SDRAMs) (2M × 8-Bit) in Plastic Thin Small-Outline Packages (TSOPs) D TM4SR72EPN — Uses 18 16M-Bit SDRAMs (2M × 8-Bit) in Plastic TSOPs D Performance Ranges: D D D D D D D D D D SYNCHRONOUS CLOCK CYCLE TIME tCK3 tCK2 (CL = 3)† (CL = 2) ’xSR72EPN-10 10 ns † CL = CAS latency 15 ns ACCESS TIME (CLOCK TO OUTPUT) tAC3 tAC2 (CL = 3) (CL = 2) 7.5 ns 7 ns REFRESH INTERVAL 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 TM2SR72EPN is a 16M-byte, 168-pin dual-in-line memory module (DIMM). The DIMM is composed of nine TMS626812ADGE, 2 097 152 x 8-bit SDRAMs, each in a 400-mil, 44-pin plastic thin small-outline package (TSOP) mounted on a substrate with dec...