D431000ACZ-70LL Electronic IC Chips 1M-BIT CMOS STATIC RAM 128K-WORD BY 8-BIT

MOS INTEGRATED CIRCUIT

µPD431000A

1M-BIT CMOS STATIC RAM 128K-WORD BY 8-BIT

Description

The µPD431000A is a high speed, low power, and 1,048,576 bits (131,072 words by 8 bits) CMOS static RAM.

The µPD431000A has two chip enable pins (/CE1, CE2) to extend the capacity. And battery backup is available. In addition to this, A and B versions are low voltage operations.

The µPD431000A is packed in 32-pin PLASTIC DIP, 32-pin PLASTIC SOP and 32-pin PLASTIC TSOP (I) (8 × 13.4 mm) and (8 × 20 mm).

Features

• 131,072 words by 8 bits organization

• Fast access time: 70, 85, 100, 120, 150 ns (MAX.)

• Low voltage operation (A version: VCC = 3.0 to 5.5 V, B version: V_CC = 2.7 to 5.5 V)

• Operating ambient temperature: TA = 0 to 70 °C

• Low VCC data retention: 2.0 V (MIN.)

• Output Enable input for easy application

• Two Chip Enable inputs: /CE1, CE2

Block Diagram

Absolute Maximum Ratings

Note –3.0 V (MIN.) (Pulse width: 30 ns)

Caution Exposing the device to stress above those listed in Absolute Maximum Rating could cause permanent damage. The device is not meant to be operated under conditions outside the limits described in the operational section of this specification. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability.

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