Datasheet

Timer Interface Module (TIM1 and TIM2)
MC68HC908GR16A Data Sheet, Rev. 1.0
230 Freescale Semiconductor
18.9.5 TIM Channel Registers
These read/write registers contain the captured TIM counter value of the input capture function or the
output compare value of the output compare function. The state of the TIM channel registers after reset
is unknown.
In input capture mode (MSxB:MSxA = 0:0), reading the high byte of the TIM channel x registers (TCHxH)
inhibits input captures until the low byte (TCHxL) is read.
In output compare mode (MSxB:MSxA ≠ 0:0), writing to the high byte of the TIM channel x registers
(TCHxH) inhibits output compares until the low byte (TCHxL) is written.
See Figure 18-13 through Figure 18-16.
Address: T1CH0H, $0026 and T2CH0H, $0031
Bit 7654321Bit 0
Read:
Bit 15 14 13 12 11 10 9 Bit 8
Write:
Reset: Indeterminate after reset
Figure 18-13. TIM Channel 0 Register High (TCH0H)
Address: T1CH0L, $0027 and T2CH0L $0032
Bit 7654321Bit 0
Read:
Bit 7654321Bit 0
Write:
Reset: Indeterminate after reset
Figure 18-14. TIM Channel 0 Register Low (TCH0L)
Address: T1CH1H, $0029 and T2CH1H, $0034
Bit 7654321Bit 0
Read:
Bit 15 14 13 12 11 10 9 Bit 8
Write:
Reset: Indeterminate after reset
Figure 18-15. TIM Channel 1 Register High (TCH1H)
Address: T1CH1L, $002A and T2CH1L, $0035
Bit 7654321Bit 0
Read:
Bit 7654321Bit 0
Write:
Reset: Indeterminate after reset
Figure 18-16. TIM Channel 1 Register Low (TCH1L)