General Description

The A42U2604 is a new generation randomly accessed memory for graphics, organized in a 4,194,304-word by 4-bit configuration. This product can execute Write and Read operation via CAS pin.

The A42U2604 offers an accelerated Fast Page Mode cycle with a feature called Extended Data Out (EDO). This allow random access of up to 2048(2K Ref.) words within a row at a 50/42/31 MHz EDO cycle, making the A42U2604 ideally suited for graphics, digital signal processing and high performance computing systems.

特性 Features

■ Organization: 4,194,304 words X 4 bits

■ Part Identification

- A42U2604 (2K Ref.)

■ Single 2.5V power supply/built-in VBB generator

■ Low power consumption

- Operating: 70mA (-50 max)

- Standby: 0.5mA (TTL), 0.2mA (CMOS), 300μA (Self-refresh current)

■ High speed

- 50/60/80 ns RAS access time

- 22/27/37 ns column address access time

- 13/15/20 ns CAS access time

- 20/24/32 ns EDO Page Mode Cycle Time

■ Industrial operating temperature range: -40°C to +85°C for -U

■ Fast Page Mode with Extended Data Out

■ 2K Refresh Cycle in 32ms

■ Read-modify-write, RAS -only, CAS -before- RAS , Hidden refresh capability

■ TTL-compatible, three-state I/O

■ JEDEC standard packages

- 300mil, 24/26-pin SOJ

- 300mil, 24/26-pin TSOP type II package