IS62C256-70U;IS62C256-70U-TR;IS62C256-70UI;中文规格书,Datasheet资料.pdf

IS62C256 ISSI ® 32K x 8 LOW POWER CMOS STATIC RAM FEATURES DESCRIPTION • Access time: 45, 70 ns The ISSI IS62C256 is a low power, 32,768 word by 8-bit CMOS static RAM. It is fabricated using ISSI s high- • Low active power: 200 mW (typical) performance, low power CMOS technology. • Low standby power — 250 µW (typical) CMOS standby WhenCS is HIGH (deselected), the device assumes a standby mode at which the power dissipation can be reduced down to — 28 mW (typical) TTL standby 250 µW (typical) at CMOS input levels. • Fully static operation: no clock or refresh required Easy memory expansion is provided by using an active LOW • TTL compatible inputs and outputs Chip Select (CS ) input and an active LOW Output Enable (OE ) input. The active LOW Write Enable (WE ) controls both writing • Single 5V power supply and reading of the memory. The IS62C256 is pin compatible with other 32K x 8 SRAMs in plastic SOP or TSOP (Type I) package. FUNCTIONAL BLOCK DIAGRAM 32K X 8 A0-A14 DECODER