MTU419B 查看數據表（PDF） - Myson Century Inc

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MTU419B

4-bit Microcontroller with LCD Driver

Myson Century Inc 

MYSON

TECHNOLOGY

MTU419B

(Preliminary)

FREQ

1/2 DUTY FREQ

1/3 DUTY FREQ

1/4 DUTY FREQ

4.10 INT Function

The INT pin can be selected by mask option as pull-high/pull-low or none and rising edge/falling edge trigger.

4.11 Watchdog Timer

The watchdog timer automatically generates a device reset when it overflows. The interval of overflow is 8/64/

512 x PH10 (set by mask option). You can use software to enable and disable this function. The watchdog

enable flag will be disabled by power on reset or reset pin reset condition, but can not be disabled by watch-

dog reset itself.

4.12 Halt Function

The halt instruction disables all clocks except predivider, timer, frequency counter, EL-light generator and

chattering clock to minimize the operating current.

4.13 Stop Function

The stop instruction disables all clocks to minimize the standby current, so only two external factors (INT, IOC

or key scan input) can release the stop condition.

7/18

MTU419B Revision 3.0 28/Oct/1999

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