MC908AS60ACFU Datasheet, PDF (309/414 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

Functional Description
Addr.
$0020
$0021
$0022
$0023
$0024
$0025
$0026
$0027
$0028
$0029
$002A
$002B
$002C
$002D
$002E
$002F
$0030
$0031
$0032
$0033
$0034
$0035
$0036
$0037
Register Name
Bit 7
TIMA Status/Control Register (TASC) TOF
Reserved R
TIMA Counter Register High (TACNTH) Bit 15
TIMA Counter Register Low (TACNTL) Bit 7
TIMA Counter Modulo Reg. High (TAMODH) Bit 15
TIMA Counter Modulo Reg. Low (TAMODL) Bit 7
TIMA Ch. 0 Status/Control Register (TASC0) CH0F
TIMA Ch. 0 Register High (TACH0H) Bit 15
TIMA Ch. 0 Register Low (TACH0L) Bit 7
TIMA Ch. 1 Status/Control Register (TASC1) CH1F
TIMA Ch. 1 Register High (TACH1H) Bit 15
TIMA Ch. 1 Register Low (TACH1L) Bit 7
TIMA Ch. 2 Status/Control Register (TASC2) CH2F
TIMA Ch. 2 Register High (TACH2H) Bit 15
TIMA Ch. 2 Register Low (TACH2L) Bit 7
TIMA Ch. 3 Status/Control Register (TASC3) CH3F
TIMA Ch. 3 Register High (TACH3H) Bit 15
TIMA Ch. 3 Register Low (TACH3L) Bit 7
TIMA Ch. 4 Status/Control Register (TASC4) CH4F
TIMA Ch. 4 Register High (TACH4H) Bit 15
TIMA Ch. 4 Register Low (TACH4L) Bit 7
TIMA Ch. 5 Status/Control Register (TASC5) CH5F
TIMA Ch. 5 Register High (TACH5H) Bit 15
TIMA Ch. 5 Register Low (TACH5L) Bit 7
6
TOIE
R
14
6
14
6
CH0IE
14
6
CH1IE
14
6
CH2IE
14
6
CH3IE
14
6
CH4IE
14
6
CH5IE
14
6
5
TSTOP
R
13
5
13
5
MS0B
13
5
0
13
5
MS2B
13
5
0
13
5
MS4B
13
5
0
13
5
4
TRST
R
12
4
12
4
MS0A
12
4
MS1A
12
4
MS2A
12
4
MS3A
12
4
MS4A
12
4
MS5A
12
4
3
0
R
11
3
11
3
ELS0B
11
3
ELS1B
11
3
ELS2B
11
3
ELS3B
11
3
ELS4B
11
3
ELS5B
11
3
2
PS2
R
10
2
10
2
ELS0A
10
2
ELS1A
10
2
ELS2A
10
2
ELS3A
10
2
ELS4A
10
2
ELS5A
10
2
1
PS1
R
9
1
9
1
TOV0
9
1
TOV1
9
1
TOV2
9
1
TOV3
9
1
TOV4
9
1
TOV5
9
1
Bit 0
PS0
R
Bit 8
Bit 0
Bit 8
Bit 0
CH0MAX
Bit 8
Bit 0
CH1MAX
Bit 8
Bit 0
CH2MAX
Bit 8
Bit 0
CH3MAX
Bit 8
Bit 0
CH4MAX
Bit 8
Bit 0
CH5MAX
Bit 8
Bit 0
R = Reserved
Figure 25-2. TIMA I/O Register Summary
25.3 Functional Description
Figure 25-1 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.
MC68HC908AZ60A • MC68HC908AS60A • MC68HC908AS60E Data Sheet, Rev. 6
Freescale Semiconductor
309