Functional description

The AS7C256A is a 5.0V high-performance CMOS 262,144-bit Static Random-Access Memory (SRAM) device organized as 32,768 words × 8 bits. It is designed for memory applications requiring fast data access at low voltage, including PentiumTM, PowerPCTM, and portable computing. Alliance’s advanced circuit design and process techniques permit 5.0V operation without sacrificing performance or operating margins.

Features

• Pin compatible with AS7C256

• Industrial and commercial temperature options

• Organization: 32,768 words × 8 bits

• High speed

- 10/12/15/20 ns address access time

- 5, 6, 7, 8 ns output enable access time

• Very low power consumption: ACTIVE

- 412.5 mW max @ 10 ns

• Very low power consumption: STANDBY

- 11 mW max CMOS I/O

• Easy memory expansion with CE and OE inputs

• TTL-compatible, three-state I/O

• 28-pin JEDEC standard packages

- 300 mil SOJ

- 8 × 13.4 mm TSOP 1

• ESD protection ≥ 2000 volts

• Latch-up current ≥ 200 mA

• 2.0V Data retention