MSM5416262

E2L0018-17-Y1 www.DataSheet4U.com ¡ Semiconductor ¡ Semiconductor MSM5416262 262,144-Word ¥ 16-Bit Multiport DRAM This version: Jan. 1998 MSM5416262 Previous version: Dec. 1996 DESCRIPTION The MSM5416262 is a 4-Mbit CMOS multiport DRAM composed of a 262,144-word by 16-bit dynamic RAM, and a 512-word by 16-bit SAM. Its RAM and SAM operate independently and asynchronously. It supports three types of operations: random access to RAM port, high speed serial access to SAM port, and bidirectional transfer of data between any selected row in the RAM port and the SAM port. In addition to the conventional multiport DRAM operating modes, the MSM5416262 features block write, flash write functions on the RAM port and a split data transfer capability on the SAM port. The SAM port requires no refresh operation because it uses static CMOS flipflops. FEATURES Single power supply: 5 V ± 10% RAS only refresh Full TTL compatibility CAS before RAS refresh Multiport organization Hidden refresh RAM : 256K word ¥ 16 bits Serial read/write SAM : 512 word ¥ 16 bits 512 tap location Fast page mode Bidirectional data transfer Write per bit Split transfer Byte write Masked write transfer Masked flash write Refresh: 512 cycles/8 ms Masked block write (4 ¥ 4 ¥ 4) Package: 64-pin 525 mil plastic SSOP (SSOP64-P-525-0.80-K) (Product : MSM5416262-xxGS-K) xx indicates speed rank. PRODUCT FAMILY Family MSM5416262-50 MSM5416262-60 MSM5416262-70 Access Time RAM 50 ns 60 ns...