MC68HC908JL8 MOTOROLA [Motorola, Inc], MC68HC908JL8 Datasheet - Page 151

• Manufacturer Part Number: MC68HC908JL8
• Description: Motorola reserves the right to make changes without further notice to any products herein
• Manufacturer: MOTOROLA [Motorola, Inc]

10.5.1 TIM Counter Prescaler
10.5.2 Input Capture
MC68HC908JL8
MOTOROLA
Addr.
$003A
$0037
$0038
$0039
TIM2 Channel 1 Status
Register Name
and Control Register
TIM2 Channel 0
TIM2 Channel 1
TIM2 Channel 1
—
Register High
Register Low
Register Low
Rev. 2.0
(T2CH1H)
(T2CH0L)
(T2CH1L)
(T2SC1)
Figure 10-2. TIM I/O Register Summary (Sheet 3 of 3)
The TIM1 clock source can be one of the seven prescaler outputs; TIM2
clock source can be one of the seven prescaler outputs or the TIM2 clock
pin, T2CLK. 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 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:
Freescale Semiconductor, Inc.
For More Information On This Product,
CH1F
Bit 15
Bit 7
Bit 7
Bit 7
0
0
Timer Interface Module (TIM)
Go to: www.freescale.com
= Unimplemented
CH1IE
14
6
6
0
6
13
5
5
0
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
Functional Description
TOV1
1
1
0
9
1
Technical Data
CH1MAX
Bit 0
Bit 0
Bit 8
Bit 0
0
151