¡ Semiconductor

1/9

MSM6685A

¡ Semiconductor

MSM6685A

8,388,608-Word x 1-Bit Serial Register

This version: Feb. 1999

GENERAL DESCRIPTION

The MSM6685A is a serial register composed of 8,388,608 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

operationbyexternalclockinput. Read/writeoperationcausestheinternaladdresstobeincremented

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-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 OKI's

recording and playback IC enables the easy implementation of a solid recording and playback

system.

FEATURES

• Configuration

: 8,388,608 ¥ 1 bit

• Serial access operation

Serial access time

: 1.5 ms

Serial read/write time

: 2.5 ms

• Low current drain

data stored and under standard conditions)

• Refresh operation

A self-refresh function is supported.

• Wide range of operating voltage

: Single 3.5 to 5.5 V supply

• Addressing

: In 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 : MSM6685AJS)

E2D0109-19-21