C8051F85X86X Datasheet, PDF (253/290 Pages) Silicon Laboratories – Low-Cost 8-bit MCU Family with up to 8 kB of Flash

C8051F85x/86x
25.3. Timer Control Registers
Register 25.1. CKCON: Clock Control
Bit
7
Name T3MH
Type
RW
Reset
0
SFR Address: 0x8E
Bit
Name
7
T3MH
6
T3ML
5
T2MH
4
T2ML
3
T1M
2
T0M
6
T3ML
RW
0
5
T2MH
RW
0
4
T2ML
RW
0
3
T1M
RW
0
2
T0M
RW
0
1
0
SCA
RW
0
0
Table 25.3. CKCON Register Bit Descriptions
Function
Timer 3 High Byte Clock Select.
Selects the clock supplied to the Timer 3 high byte (split 8-bit timer mode only).
0: Timer 3 high byte uses the clock defined by the T3XCLK bit in TMR3CN.
1: Timer 3 high byte uses the system clock.
Timer 3 Low Byte Clock Select.
Selects the clock supplied to Timer 3. Selects the clock supplied to the lower 8-bit timer
in split 8-bit timer mode.
0: Timer 3 low byte uses the clock defined by the T3XCLK bit in TMR3CN.
1: Timer 3 low byte uses the system clock.
Timer 2 High Byte Clock Select.
Selects the clock supplied to the Timer 2 high byte (split 8-bit timer mode only).
0: Timer 2 high byte uses the clock defined by the T2XCLK bit in TMR2CN.
1: Timer 2 high byte uses the system clock.
Timer 2 Low Byte Clock Select.
Selects the clock supplied to Timer 2. If Timer 2 is configured in split 8-bit timer mode,
this bit selects the clock supplied to the lower 8-bit timer.
0: Timer 2 low byte uses the clock defined by the T2XCLK bit in TMR2CN.
1: Timer 2 low byte uses the system clock.
Timer 1 Clock Select.
Selects the clock source supplied to Timer 1. Ignored when C/T1 is set to 1.
0: Timer 1 uses the clock defined by the prescale field, SCA.
1: Timer 1 uses the system clock.
Timer 0 Clock Select.
Selects the clock source supplied to Timer 0. Ignored when C/T0 is set to 1.
0: Counter/Timer 0 uses the clock defined by the prescale field, SCA.
1: Counter/Timer 0 uses the system clock.
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Preliminary Rev 0.6