UT61256

 Rev. 1.1 UTRON UT61256 32K X 8 BIT HIGH SPEED CMOS SRAM FEATURES Fast access time : 8/10/12/15ns (max.) Low operating power consumption: 80 mA (typical.) Single5V power supply All inputs and outputs are TTL compatible Fully static operation Three state outputs Package : 28-pin 300 mil skinny PDIP 28-pin 300 mil SOJ 28-pin 330 mil SOP 28-pin 8mm×13.4 mm STSOP FUNCTIONAL BLOCK DIAGRAM A4 A3 A14 A13 . .A12 ROW DECODER A7 A6 . A5 A8 I/O1 ... ... I/O CONTROL I/O8 ... MEMORYARRAY 512 ROWS × 512 COLUMNS . .. COLUMNI/O COLUMNDECODER CE LOGIC WE CONTROL OE A11 A9 A10 A2 A1 A0 VCC VSS PIN DESCRIPTION SYMBOL A0 - A14 I/O1 - I/O8 CE WE OE VCC VSS DESCRIPTION Address Inputs Data Inputs/Outputs Chip Enable Input Write Enable Input Output Enable Input Power Supply Ground GENERAL DESCRIPTION The UT61256 is a 262,144-bit high speed CMOS static random access memory organized as 32,768 words by 8 bits. It is fabricated using high performance, high reliability CMOS technology. The UT61256 is designed for high-speed system application. It is particularly suited for use in high speed and high density system applications. The UT61256 operates from a signal 5V power supply and all inputs and outputs are fully TTL compatible PIN CONFIGURATION A14 1 A12 2 A7 3 A6 4 A5 5 A4 6 A3 7 A2 8 A1 9 A0 10 I/O1 11 I/O2 12 I/O3 13 Vss 14 UT61256 28 Vcc 27 WE 26 A13 25 A8 24 A9 23 A11 22 OE 21 A10 20 CE 19 I/O8 18 I/O7 17 I/O6 16 I/O5 15 I/O4 PDIP/SOP/SOJ OE A11 A9 A8 A13 WE Vcc A14...