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Semiconductor

ML670100

OKI’s High-Performance CMOS 32-Bit Single Chip Microcontroller

GENERAL DESCRIPTION

The ML670100 is a high-performance 32-bit microcontroller combining a RISC based, 32-bit CPU core -

the ARM7TDMI

digital converter. This combination of 32-bit data processing, built-in memory, and on-chip peripherals

make it ideal for controlling equipment requiring both high speed and high functionality. An external

memory controller supports direct connection to memory and peripheral devices for adding even more

functionality.

FEATURES

Operating Voltage

2.7 to 3.6V

Operating Frequency 25MHz maximum(3.0 to 3.6V)

On-chip memory

-ROM: 128 kilobytes

-RAM: 4 kilobytes

I/O Function

I/O ports: 8 bits x 9, I/O directions are specified at the bit level

Timer

-Flexible timer (16-bit multi-function timer with six channels)

Choice of operating modes: auto-reload timer, compare output, PWM

and capture

-Time base counter with WDT function

Serial Port

-One asynchronous serial port (UART) with baud rate generator

-Two clock synchronous serial port

A-to-D Converter

-8-bit resolution A-to-D converter with eight analog input ports

Interrupt

Controller

-Support for 28 interrupt sources: 9 external and 19 internal

-Choice of eight priority levels for each source

External Memory

Controller

-Direct connection to ROM, SRAM, DRAM and peripheral devices

-Support for four banks: two for ROM, SRAM and I/O devices plus two for

DRAM

-User-configurable bus width (8/16 bits) and wait control and other

parameters for accessing memory and external devices

Clock Generator

-Built-in crystal oscillation circuit and PLL

-Choice of divider ratio (1/1, 1/2, 1/4) for adjusting operating clock frequency

to match the load of processing

Package

144-pin LQFP ( LQFP144-P-2020-0.50-K)

ARM POWERED logo is the registered trademark of ARM Limited. ARM7TDMI is the trademark of ARM Limited.

The Information contained herein can change without notice owing to product and/or technical i

mprovement.

The signal name of negative logic is being changed to nXXX from XXX in this data sheet.

Version 2

Aug., 1999