USER`S MANUAL

CONTROL REGISTERS S3F80N8_UM_REV1.10

BTCON

— Basic Timer Control Register D3H

.1

.0

Reset Value

Read/Write

Addressing Mode

.7–.4

.3–.2

.7 .6 .5 .4 .3 .2 .1 .0

0 0 0 0 0 0 0 0

R/W R/W R/W R/W R/W R/W R/W R/W

Register addressing mode only

Watchdog Timer Function Disable Code (for System Reset)

1 0 1

Others

0 Disable watchdog timer function

Enable watchdog timer function

Basic Timer Input Clock Selection Bits

f

OSC f f

OSC

OSC

/4096

/1024

/128

Basic Timer Counter Clear Bit

1

(1)

Clear the basic timer counter value

Clock Frequency Divider Clear Bit for all Timers

(2)

1 Clear both clock frequency dividers

NOTES:

1. When BTCON.1 is set to “1” , the basic timer counter value is cleared to “00H”. Immediately following the write operation, the BTCON.1 value is automatically cleared to “0”.

2. When you write a “1” to BTCON.0, the corresponding frequency divider is cleared to “00H”. Immediately following the write operation, the BTCON.0 value is automatically cleared to “0”.

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