GENERAL DESCRIPTION

Oki’s ML674000 standard microcontroller (MCU) is a member of an extensive and growing family of ARM? architecture 32-bit MCUs for general-purpose applications that require 32-bit CPU performance and low cost afforded by MCU integrated features.

FEATURES

? CPU

32-bit RISC CPU (ARM7TDMI)

32-bit instructions (ARM Instructions) and 16-bit instructions (Thumb Instructions) mixed

General purpose registers : 31 x 32 bits

Built-in Barrel shifter and multiplier (32 bit x 8 bit, Modified Booth’s Algorithm)

Little endian

Built-in debug function

? Internal memory

RAM 8KB (32-bit access)

? External memory controller

ROM (FLASH): 16 Mbytes

SRAM: 16 Mbytes

DRAM: 64 Mbytes (SDRAM and EDO-DRAM support)

External IO devices: 16 Mbytes x 2 banks (with wait control by external signal)

? Interrupt controller

24 sources: 19 internals and 5 externals (IRQ: 4, FIQ: 1)

? DMA controller

2 channels: Dual address mode, cycle steal and burst tranfer mode

? Timer

1 channel: 16-bit auto reload for operating system

6 channels: 16-bit auto reload for application

1 channel: 16 bit watchdog timer

? Serial interface

1 channel: UART

1 channel: UART with 16-byte FIFO

? Parallel I/O Port

2 ports x 16 bits (bitwise input/output settings)

? PWM

2 channels x 16 bits

? Analog-to-Digital Converter

8 channels x 10 bits

? Power down mechanism

Standby (all clock stop) and Halt (clock stop by each function block)

Clock gear (selectable 1/1, 1/2, 1/4, 1/8, 1/16 input clock frequency)

? JTAG interface

Connectable to JTAG ICE (e.g. ARM MutiICE)

? Power supply voltage

Core section: 2.25 V to 2.75 V

IO section: 3.0 V to 3.6 V

? Operating frequency

33 MHz (Max.)

? Operating temperature (ambient temperature)

–40°C to +85°C

? Package

128-pin plastic TQFP (P-TQFP128-1414-0.40-K)

144-pin plastic LFBGA (P-LFBGA144-1111-0.80)