S3P852B Datasheet, PDF (76/383 Pages) Samsung semiconductor – 8-BIT CMOS MICROCONTROLLERS

CONTROL REGISTERS
S3C852B/P852B (Preliminary Spec)
BTCON — Basic Timer Control Register
D3H
Set 1
Bit Identifier
RESET Value
Read/Write
Addressing Mode
.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
.7–.4
Watchdog Timer Function Disable Code (for Reset)
1 0 1 0 Disable watchdog timer function
Any other value Enable watchdog timer function
.3 and .2
Basic Timer Input Clock Selection Bits
0 0 fxx/4096
0 1 fxx/1024
1 0 fxx/128
1 1 fxx/16
.1
Basic Timer Counter Clear Bit ⁽¹⁾
0 No effect
1 Clear the basic timer counter value
.0
Clock Frequency Divider Clear Bit for Basic Timer ⁽²⁾
0 No effect
1 Clear divider
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".
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