®
256Mb: x4, x8, x16 DDR2 SDRAM
SAA64M4– 16 Meg x 4 x 4 SAA32M8– 8 Meg x 8 x 4 SAA16M16– 4 Meg x 16 x 4
For the latest data sheet, please refer to the SpecTek Web site: http://www. spectek. com
DDR2 SDRAM
Features
• • • • • • • • • • • • • • ROHS compliant VDD = +1. 8V ±0. 1V, VDDQ = +1. 8V ±0. 1V JEDEC standard 1. 8V I/O (SSTL_18-compatible) Differential data strobe (DQS, DQS#) option Four-bit prefetch architecture DLL to align DQ and DQS transitions with CK Four internal banks for concurrent operation Programmable CAS Latency (CL): 3 and 4 Posted CAS additive latency (AL): 0, 1, 2, 3, and 4 WRITE latency = READ latency - 1 tCK Programmable burst lengths: 4 or 8 Adjustable data-ou...