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Semiconductor

524,288-Double Words x 32-bit or 1,048,576-Words x 16-bit MaskROM

8Double Word x 32-Bit or 16Word x 16-Bit/Page Mode MASKROM

DESCRIPTION

FEATURES

Pin compatible OTP available

Packages:

70-PIN PLASTIC SSOPP

70-PIN PLASTIC TSOP(Type II)

Internal powerdown function

Tri-State output configurations

Input/Output TTL compatible

Access time

100ns Max (Normal access)

50ns Max (Page access)

524,288-double words x 32-bit / 1,048,576-words x 16-bit

Single 5.0V power supply

The OKI MSM531655E is a 524,288-double words x 32-bit or 1,048,576-words x 16-bit

CMOS Mask ROM with an asynchronous page read mode. Each page is organized 8 double

words x 32-bit or 16 words x 16-bit. It operates on a single 5.0V power supply and is TTL

compatible. The chip's asynchronous I/O requires no external clock assuring easy operation.

A power-down mode provides low power dissipation when the chip is not selected. The CE

and OE pins are provided as control signals that permit three-stated output allowing easy

memory expansion on a system bus.The MSM531655E is suited for use as large capacity

fixed memory for microcomputers and data terminals.

MSM531655E

8-double words(A2,A1,A0) or 16-words(A2,A1,A0,A-1) / Page

(MSM531655E-xxGS-K)

(MSM531655E-xxTS-K)

(SSOP70-P-500/0.8-K)

(TSOP70-P-400/0.65-K)