PEDL66577-01

1Semiconductor

This version: Apr. 2000

MSM66577 Family

Preliminary

16-Bit Microcontroller

1/34

GENERAL DESCRIPTION

The MSM66577 family of highly functional CMOS 16-bit single chip microcontrollers utilizes the nX-8/500S,

Oki’s proprietary CPU core.

Four channels of serial ports, consisting of two channels of synchronous serial ports with 32-byte FIFO registers

and two channels of UART/synchronous serial ports, enable easy interfacing with external peripheral LSI devices

such as an encoder/decoder or servocontroller.

A switching function permits selection of separate address and data lines or multiplexed lines for the external bus

interface to correspond to various peripheral LSI devices.

With features such as a clock gear function, dual clock function, STOP/HALT mode, programmable pull-up ports

in which individual bits can be programmed, and a small, thin package, the MSM66577 family of microprocessors

is optimally suited for the system control of small-sized low power devices.

The flash ROM version (MSM66Q577LY) programmable with a single 3V power supply (3.0 to 3.6V) and flash

ROM version (MSM66Q577) programmable with a single 5V power supply (4.5 to 5.5V) are also included in the

family. These versions are easily adaptable to sudden specification changes and to new product versions.

APPLICATIONS

Digital Audio Control Systems

PC peripheral Control Systems

Office Electronics Control Systems

ORDERING INFORMATION

Order Code or Product Name

Package

Remark

MSM66577L-xxTB *1

Low voltage mask ROM version (2.4 to 3.6 V)

MSM66577-xxTB *1

5 V mask ROM version (4.5 to 5.5 V)

MSM66Q577LY-NTB *2

MSM66577L flash ROM version (3.0 to 3.6V)

MSM66Q577-NTB *2

100-pin plastic TQFP

(TQFP 100-P-1414-0.50-K)

MSM66577 flash ROM version (4.5 to 5.5 V)

*1 : The “xx” of “-xx” stands for the code number.

*2 : The “N” of “-N” stands for the flash ROM and the OTP ROM, blank version.

When OKI programs and ship the flash ROM and OTP, the part number is changed from ”–N” to ”–XX” (code

number ) , for example, MSM66Q577-999TB.