MC68HC908AB32 MOTOROLA [Motorola, Inc], MC68HC908AB32 Datasheet - Page 174

• Manufacturer Part Number: MC68HC908AB32
• Description: HCMOS Microcontroller Unit
• Manufacturer: MOTOROLA [Motorola, Inc]

Timer Interface Module A (TIMA)
11.5.2 Input Capture
Technical Data
174
Addr.
$002C
$002D
$002B
$002E
$002F
$0030
$0031
Timer A Channel 2 Status
Timer A Channel 3 Status
Register Name
and Control Register
and Control Register
Timer A Channel 1
Timer A Channel 2
Timer A Channel 2
Timer A Channel 3
Timer A Channel 3
Register High
Register High
Register Low
Register Low
Register Low
(TACH2H)
(TACH3H)
(TACH1L)
(TACH2L)
(TACH3L)
(TASC2)
(TASC3)
Figure 11-2. TIMA I/O Register Summary (Sheet 2 of 2)
With the input capture function, the TIMA can capture the time at which
an external event occurs. When an active edge occurs on the pin of an
input capture channel, the TIMA latches the contents of the TIMA
counter into the TIMA channel registers, TACHxH:TACHxL. The polarity
of the active edge is programmable. Input captures can generate
TIMA CPU interrupt requests.
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
Write:
Write:
Write:
Freescale Semiconductor, Inc.
For More Information On This Product,
CH2F
Bit 15
CH3F
Bit 15
Bit 7
Bit 7
Bit 7
Bit 7
0
0
0
0
Timer Interface Module A (TIMA)
Go to: www.freescale.com
= Unimplemented
CH2IE
CH3IE
14
14
6
6
0
6
0
6
MS2B
13
13
5
5
0
5
0
0
5
Indeterminate after reset
Indeterminate after reset
Indeterminate after reset
Indeterminate after reset
Indeterminate after reset
MS2A
MS3A
12
12
4
4
0
4
0
4
ELS2B
ELS3B
11
11
3
3
0
3
0
3
MC68HC908AB32
ELS2A
ELS3A
10
10
2
0
2
0
2
2
TOV2
TOV3
1
1
0
9
1
0
9
1
MOTOROLA
—
CH2MAX
CH3MAX
Rev. 1.0
Bit 0
Bit 0
Bit 8
Bit 0
Bit 8
Bit 0
0
0