RAM

IBM025160 Datasheet PDF – 256K x 16 Multiport Video RAM

Posted on by pinout

Part Number: IBM025160

Function: 256K X 16 MULTIPORT VIDEO RAM

Package:  SSOG-64 JEDEC Standard

Manufacturer: IBM Microelectronics

Pinouts:

IBM025160 datasheet

 

Description

This 4Mb dual port Video RAM (VRAM) consists of a Dynamic Random Access Memory (DRAM) organized as 256K x 16 interfaced to a Serial Register / Serial Access Memory (SAM) organized as 256 x 16. The VRAM supports three basic operations : Bidirectional Random Access to the DRAM, Bidirectional Serial Access to the SAM, and Bidirectional Data Transfer between any DRAM row and the SAM. Full compatibility is provided between Half Depth SAM (256 x 16) and Full Depth SAM (512 x 16) by setting the VRAM in Serial Register Stop (SRS) mode with a stop address of 128 bit (or less).

Features

1. Fully Asynchronous operation of Random port and Serial port
2. Compatible to Full Depth SAM in SRS mode
3. 50 MHz EDO performance
4. Split Serial Register with Width Control
5. Full Read and Split Address Pointer for SAM
6. TTL compatible

 

Other data sheets are available within the file: IBM025161, IBM025170, IBM025171

IBM025160 Datasheet PDF Download


IBM025160 pdf

STK11C48-N25I Datasheet PDF – 2K x 8 Static RAM – Simtek

Posted on by pinout

Part Number: STK11C48-N25I

Function: 2K x 8 nv SRAM CMOS nonvolatile static RAM

Package: 28-Pin 300 mil PDIP, 300 mil SOIC and 350 mil SOIC

Manufacturer: Simtek Corporation

Pinouts:

STK11C48-N25I datasheet

Description

The Simtek STK11C48 is a fast static RAM with a nonvolatile element incorporated in each static memory cell. The SRAMcan be read and written an unlimited number of times,while independent, nonvolatile data resides in the Nonvolatile Elements. Data transfers from the SRAMto the Nonvolatile Elements (the STORE operation), or from Nonvolatile Elements to SRAM(the  RECALL operation), take place using a software sequence. Transfers from the Nonvolatile Elements to the SRAM(the  RECALL operation) also take place automatically on restoration of power.

Block Diagram

components

Features

1. 25ns, 35ns and 45ns Access Times
2. STORE to Nonvolatile Elements Initiated by Software
3. RECALL to SRAM Initiated by Software or Power Restore
4. 10mA Typical ICC at 200ns Cycle Time
5. Unlimited READ, WRITE and RECALL Cycles

Other data sheets are available within the file:

STK11C48, STK11C48-N20, STK11C48-N25, STK11C48-N25I, STK11C48-P35I

STK11C48-N25I Datasheet PDF Download


STK11C48-N25I pdf