Samsung S3P80C5 User Manual page 68

S3P80C5/C80C5/C80C8
BTCON
— Basic Timer Control Register
Bit Identifier
RESET Value RESET
Read/Write
Bit Addressing
.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".
.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
Any other value Enable watchdog timer function
Basic Timer Input Clock Selection Bits
f /4096
0 0
OSC
f /1024
0 1
OSC
f /128
1 0
OSC
1 1 Invalid setting; not used for S3P80C5/C80C5/C80C8.
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 0
0 No effect
1 Clear both clock frequency dividers
.5 .4
0 0
R/W R/W R/W
(1)
CONTROL REGISTERS
D3H
.3 .2 .1
0 0 0
R/W R/W
(2)
Set 1
.0
0
R/W
4-5