GENERAL DESCRIPTION

MSM6684B is a serial register organized as 4,194,304 words x one bit, characterized by medium speed, low power consumption operation.

This device has a built-in internal address generation circuit allowing continuous serial read/write operation by external clock input.

Read/write operation causes the internal address to be incremented automatically by +1.

External address input enables addressing in units of 1024 words. Furthermore, a refresh timer and a refresh address counter are installed, which makes an external refresh circuit unnecessary. In addition, this configuration allows lower power consumption.

The device is packaged in 26/20-pin SOJ having a width of 300 mil.

It is well adapted for storing much data by means of a battery backup. Its combination with our recording and playback LSI enables the easy implementation of a solid recording and playback system.

FEATURES

• Configuration

4,194,304 x 1 bit

• Serial access operation

Serial access time : 1.5 ms

Serial read/write time : 2.5 ms

• Low current drain

150 mA max. (VCC = 4 V with data stored and under standard conditions)

• Refresh operation

A self-refresh function is supported.

• Wide operation voltage range

Single 3.5 to 5.5 V

• Addressing

Units of 1024 words

• Process

0.45 mm double well CMOS process

• Package :

26/20-pin plastic SOJ (SOJ26/20-P-300-1.27) (Product name : MSM6684BJS)