mc68hc908jb16 Freescale Semiconductor, Inc, mc68hc908jb16 Datasheet - Page 143

• Manufacturer Part Number: mc68hc908jb16
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

10.5.1 TIM Counter Prescaler
10.5.2 Input Capture
MC68HC908JB16
Freescale Semiconductor
Addr.
$004A
$004B
$0048
$0049
Timer 2 Channel 1 Status
Register Name
and Control Register
Timer 2 Channel 0
Timer 2 Channel 1
Timer 2 Channel 1
Register High
Register Low
Register Low
—
(T2CH1H)
(T2CH0L)
(T2CH1L)
Rev. 1.1
(T2SC1)
Figure 10-2. TIM I/O Register Summary (Sheet 3 of 3)
The TIM clock source can be one of the seven prescaler outputs or the
TIM clock pin, PTE0/TCLK. The prescaler generates seven clock rates
from the internal bus clock. The prescaler select bits, PS[2:0], in the TIM
status and control register (TSC) select the TIM clock source.
With the input capture function, the TIM can capture the time at which an
external event occurs. When an active edge occurs on the pin of an input
capture channel, the TIM latches the contents of the TIM counter into the
TIM channel registers, TCHxH:TCHxL. The polarity of the active edge is
programmable. Input captures can generate TIM CPU interrupt
requests.
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
CH1F
Bit 15
Bit 7
Bit 7
Bit 7
0
0
Timer Interface Module (TIM)
= Unimplemented
CH1IE
14
6
6
0
6
CH01IE
13
5
5
0
5
Indeterminate after reset
Indeterminate after reset
Indeterminate after reset
MS1A
12
4
4
0
4
ELS1B
11
3
3
0
3
Timer Interface Module (TIM)
ELS1A
10
2
2
0
2
TOV1
1
1
0
9
1
Technical Data
CH1MAX
Bit 0
Bit 0
Bit 8
Bit 0
0
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