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CONTROL REGISTERS
BTCON
— Basic Timer Control Register
Bit Identifier
Reset Value
Read/Write
Addressing Mode
.7–.4
.3–.2
.1
.0
NOTES:
1.
When you write a "1" to BTCON.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".
3.
The fxx is selected clock for system (main OSC. or sub OSC.).
4-6
.7
.6
0
0
R/W
R/W
Register addressing mode only
Watchdog Timer Function Disable Code (for System Reset)
1
0
1
0
Disable watchdog timer function
Other values
Enable watchdog timer function
Basic Timer Input Clock Selection Bits
(3)
0
0
fxx/4096
0
1
fxx/1024
1
0
fxx/128
1
1
fxx/16
Basic Timer Counter Clear Bit
0
No effect
1
Clear the basic timer counter value
Clock Frequency Divider Clear Bit for Basic Timer and Timer/Counters
0
No effect
1
Clear both clock frequency dividers
S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X
.5
.4
0
0
R/W
R/W
R/W
(1)
D3H
.3
.2
.1
0
0
0
R/W
R/W
Set 1
.0
0
R/W
(2)
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