MC68HC08AZ32A Datasheet, PDF (385/456 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Freescale Semiconductor, Inc.
Timer Interface Module A (TIMA)
Functional Description
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Figure 22-2. TIMA I/O Register Summary
Register Name
Bit 7
TIMA Ch. 4 Status/Control Register ^{R: CH4F}
(TASC4) _{W: 0}
R:
TIMA Ch. 4 Register High (TACH4H)
Bit 15
W:
R:
TIMA Ch. 4 Register Low (TACH4L)
Bit 7
W:
TIMA Ch. 5 Status/Control Register ^{R: CH5F}
(TASC5) _{W: 0}
R:
TIMA Ch. 5 Register High (TACH5H)
Bit 15
W:
R:
TIMA Ch. 5 Register Low (TACH5L)
Bit 7
W:
6
CH4IE
14
6
CH5IE
14
6
5
MS4B
13
5
0
R
13
5
4
MS4A
12
4
MS5A
12
4
3
2
ELS4B ELS4A
11
10
3
2
ELS5B ELS5A
11
10
3
2
1 Bit 0
TOV4 CH4MAX
9
Bit 8
1
Bit 0
TOV5 CH5MAX
9
Bit 8
1
Bit 0
R = Reserved
22.4 Functional Description
Figure 22-1 shows the TIMA structure. The central component of the
TIMA is the 16-bit TIMA counter that can operate as a free-running
counter or a modulo up-counter. The TIMA counter provides the timing
reference for the input capture and output compare functions. The TIMA
counter modulo registers, TAMODH–TAMODL, control the modulo
value of the TIMA counter. Software can read the TIMA counter value at
any time without affecting the counting sequence.
The six TIMA channels are programmable independently as input
capture or output compare channels.
MC68HC08AZ32A — Rev 1.0
MOTOROLA
Timer Interface Module A (TIMA)
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Technical Data
385