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

External Memory Controller

Controls access of externally connected devices such as ROM (FLASH), SRAM, SDRAM (EDO DRAM) and IO

devices.

(1) ROM (FLASH) access function

Supports 16-bit device

Supports FLASH memory: Byte write (can be written only by IF equivalent to SRAM).

Access timing setting

(2) SRAM access function

Supports 16-bit device

Supports asynchronous SRAM

Access timing setting

(3) DRAM access function

Supports 16-bit device

Supports EDO/SDRAM: Simultaneous connections to EDO-DRAM and SDRAM cannot be made.

Access timing setting

(4) External IO access function

Supports 8-bit/16-bit device

Supports 2 banks independently

Supports external wait input: XWAIT (IO bank 0 only)

Access timing setting (for each bank)

Power Management

HALT and STANDBY functions are supported as power save functions.

(1) HALT mode

HALT object

CPU, internal RAM, AHB bus control

HALT mode setting: Set by the system control register.

HALT mode cancelling: Reset, interrupt

(2) STANDBY mode

Stops the clock of entire LSI.

STANDBY mode setting: Specified by the system control register.

STANDBY mode cancelling: Reset, external interrupt (other than FIQ)

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