ml674000 Oki Semiconductor, ml674000 Datasheet - Page 16

• Manufacturer Part Number: ml674000
• Description: 32-bit Arm -based General Purpose Microcontroller
• Manufacturer: Oki Semiconductor

FUNCTIONAL DESCRIPTION
CPU
CPU core:
Operating frequency:
Instructions:
General register bank:
Built-in barrel shifter:
Multiplier:
Built-in debug function: JTAG interface, break point register
Built-in Memory
RAM:
Interrupt Controller
Fast interrupt input (FIQ) and interrupt input (IRQ) are used as interrupt input signals of ARM core. The
interrupt controller controls these interrupt signals to the ARM core.
(1) Interrupt sources of ML674000
(2) Interrupt priority level
(3) External interrupt pin input
(4) External fast interrupt pin input
Timer
7 channels of 16-bit reload timers are used. Of these, 1 channel is used as system timer for the OS.
The timers of the other 6 channels are used in application software.
(1) System timer: 1 channel
(2) Application timer: 6 channels
WDT
This MCU contains a Watch Dog Timer that can 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
(4) Maximum period: 200 msec or longer
Oki Semiconductor
16-bit auto reload timer: Used as system timer for OS
(This timer is incorporated in µPLAT-7B.)
Interval mode
16-bit auto reload timer
One shot, interval mode
Clock can be set for each channel
FIQ: 1 source, external source (external pin: EFIQ_N)
IRQ: 23 sources, internal sources: 19, external sources: 4 (external pins: EXINT[3:0])
Priority can be set in 8 levels for each source.
Level sense: Interrupt signal level is selected.
Edge sense: Rising or falling is selected.
Edge sense: Falling edge is detected.
- Watchdog timer mode: generates reset or interrupt when the timer overflows.
- Interval timer mode: generates interrupt when the timer reaches an overflow condition.
8 KB (2K x 32 bits)
Connected to processor bus (read: 1 cycle access, write: 2 cycle access)
ARM7TDMI
1 MHz to 33 MHz
ARM instruction (32-bit length) and Thumb instruction (16-bit length) can be mixed.
31 x 32 bits
ALU and barrel shift operations can be executed by one instruction.
32 bits x 8 bits (Modified Booth’s Algorithm)
ML674000
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