USER'S GUIDE

PCON.3:EPFW

ªEnable Power Fail Interruptº: Used to enable or disable the Power Fail Interrupt. When EPFW is set to a 1, it will be enabled; it will be disabled when EPFW is cleared to a 0.

Initialization:

Cleared to a 0 on any type of reset.

Read Access:

Can be read normally anytime.

Write Access:

Can be written normally anytime.

PCON.2:

EWT

ªEnable Watchdog Timerº:

Used to enabled or disable the Watchdog Timeout Reset. The Watchdog

 

Timer is enabled if EWT is set to a 1 and will be disabled if EWT is cleared

 

to a 0.

Initialization:

Cleared to a 0 on a No±VLI Power on Reset. Remains unchanged during

 

other types of reset.

Read Access:

May be read normally anytime.

Write Access:

Can be written only by using the Timed Access register.

PCON.1:

STOP

ªStopº:

Used to invoke the Stop mode. When set to a 1, program execution will ter-

 

minate immediately and Stop mode operation will commence. Cleared to a 0

 

when program execution resumes following a hardware reset.

Initialization:

Cleared to a 0 on any type of reset.

Read Access:

Can be read anytime.

Write Access:

Can be written only by using the Timed Access register.

PCON.0:

IDL

ªIdleº

Used to invoke the Idle mode. When set to a 1, program execution will be

 

halted and will resume when the idle bit is cleared to 0 following an interrupt

 

or a hardware reset.

Initialization:

Cleared to 0 on any type of reset or interrupt.

Read Access:

Can be read normally anytime.

Write Access:

Can be written normally anytime.

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Mitsubishi DS907x SIP, DS5000TK manual PCON.3EPFW, PCON.2 EWT, PCON.1 Stop, PCON.0 IDL