ML674000 View Datasheet(PDF) - Oki Electric Industry

Part Name

Description

Manufacturer

ML674000

32-bit General-purpose, ARM-based Microcontroller

Oki Electric Industry 

OKI Semiconductor

FEDL674000-02

ML674000

DESCRIPTION OF FUNCTIONS

CPU

CPU core:

Operating frequency:

Instructions:

General register bank:

Built-in barrel shifter:

Multiplier:

Built-in debug function:

ARM7TDMI

1 MHz to 33 MHz

ARM instruction (32-bit length) and Thumb instruction (16-bit length) can be mixed.

31 × 32 bits

ALU and barrel shift operations can be executed by one instruction.

32 bits × 8 bits (Modified Booth’s Algorithm)

JTAG interface, break point register

Built-in Memory

RAM:

8 KB (2K × 32 bits)

Connected to processor bus (read: 1 cycle access, write: 2 cycle access)

Interrupt Controller

Fast interrupt input (FIQ) and interrupt input (IRQ) are employed as interrupt input signals of ARM core. The

interrupt controller controls these interrupt signals going to ARM core.

(1) Interrupt sources of ML674000

FIQ: 1 source, external source (external pin: EFIQ_N)

IRQ: 23 sources, internal sources : 19, external sources : 4 (external pins: EXINT[3:0])

(2) Interrupt priority level

Priority can be set in 8 levels for each source.

(3) External interrupt pin input

Level sense: Interrupt signal level is selected.

Edge sense: Rise or fall is selected.

(4) External fast interrupt pin input

Edge sense: Fall edge is detected.

Timer

7 channels of 16-bit reload timers are employed. Of these, 1 channel is used as system timer for OS.

The timers of other 6 channels are used in application software.

(1) System timer: 1 channel

16-bit auto reload timer: Used as system timer for OS

(This timer is incorporated in µPLAT-7B.)

Interval mode

(2) Application timer: 6 channels

16-bit auto reload timer

One shot, interval mode

Clock can be set for each channel

WDT

This MCU contains a Watch Dog Timer that can also function as an interval timer.

(1) 16-bit timer

(2) Watch dog timer or interval timer mode can be selected

(3) Interrupt or reset generation

- Watchdog timer mode: generates reset or interrupt when the timer is overflows.

- Interval timer mode: generates interrupt when the timer reaches an overflow condition.

(4) Maximum period: 200 msec or longer

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