IS61DDSB21M18C Datasheet 18Mb DDR-II SIO SYNCHRONOUS SRAM

Manufacturer: ISSI (now Infineon)

Overview: IS61DDSB21M18C IS61DDSB251236C 1Mx18, 512Kx36 18Mb DDR-II (Burst 2) SIO SYNCHRONOUS SRAM APRIL.

Datasheet Details

Part number	IS61DDSB21M18C
Manufacturer	ISSI (now Infineon)
File Size	954.42 KB
Description	18Mb DDR-II SIO SYNCHRONOUS SRAM
Download	IS61DDSB21M18C Download (PDF)

The 18Mb IS61DDSB251236C and IS61DDSB21M18C are synchronous, high-performance CMOS static random access memory (SRAM) devices.

These SRAMs have a separate I/O bus.

The rising edge of K clock initiates the read/write operation, and all internal operations are self-timed.

512Kx36 and 1Mx18 configuration available.
On-chip delay-locked loop (DLL) for wide data valid window.
Seperate I/O read and write ports.
Synchronous pipeline read with self-timed late write operation.
Double Data Rate (DDR) interface for read and write input ports.
Fixed 2-bit burst for read and write operations.
Clock stop support.
Two input clocks (K and K#) for address and control registering at rising edges only.
Two input clocks (C and.

Part Number	Description
IS61DDSB251236C	18Mb DDR-II SIO SYNCHRONOUS SRAM
IS61DDB22M36C	72Mb DDR-II CIO SYNCHRONOUS SRAM
IS61DDB24M18C	72Mb DDR-II CIO SYNCHRONOUS SRAM
IS61DDP2B21M36C	36Mb DDR-IIP CIO SYNCHRONOUS SRAM
IS61DDP2B21M36C1	36Mb DDR-IIP CIO SYNCHRONOUS SRAM
IS61DDP2B21M36C2	36Mb DDR-IIP CIO SYNCHRONOUS SRAM
IS61DDP2B22M18C	36Mb DDR-IIP CIO SYNCHRONOUS SRAM
IS61DDP2B22M18C1	36Mb DDR-IIP CIO SYNCHRONOUS SRAM
IS61DDP2B22M18C2	36Mb DDR-IIP CIO SYNCHRONOUS SRAM
IS61DDP2B41M18C	18Mb DDR-IIP CIO SYNCHRONOUS SRAM