MC68HC908AT32 Datasheet, PDF (187/378 Pages) Freescale Semiconductor, Inc – Microcontrollers

Functional Description
Addr.
Register Name
Bit 7
6
5
4
3
2
Read: TOF
0
Timer A Status and Control Register
TOIE TSTOP
0
PS2
$0020
(TASC) Write: 0
TRST
R
See page 195.
Reset: 0
0
1
0
0
0
Keyboard Interrupt Enable Register ^{Read: 0}
0
0
KBIE4 KBIE3 KBIE2
$0021
(KBIER) Write:
See page 285. _{Reset: 0}
0
0
0
0
0
$0022
Timer A Counter Register ^{Read: Bit 15}
14
13
12
11
10
High (TACNTH) Write: R
R
R
R
R
R
See page 197. _{Reset: 0}
0
0
0
0
0
$0023
Read: Bit 7
6
5
4
3
2
Timer A Counter Register
Low (TACNTL) Write: R
R
R
R
R
R
See page 197.
Reset: 0
0
0
0
0
0
$0024
Timer A Modulo Register ^Read: _{Bit 15}
14
13
12
11
10
High (TAMODH) Write:
See page 197. _{Reset: 1}
1
1
1
1
1
$0025
Timer A Modulo Register ^Read: _{Bit 7}
6
5
4
3
2
Low (TAMODL) Write:
See page 197. _{Reset: 1}
1
1
1
1
1
$0026
Read:
Timer A Channel 0 Status and Control
Register (TASC0) Write:
See page 198. _Reset:
CH0F
0
0
CH0IE
0
MS0B
0
MS0A ELS0B ELS0A
0
0
0
$0027
Timer A Channel 0 Register ^Read: _{Bit 15}
14
High (TACH0H) Write:
See page 201. _Reset:
13
12
11
10
Indeterminate after reset
$0028
Timer A Channel 0 Register ^Read: _{Bit 7}
6
Low (TACH0L) Write:
See page 201. _Reset:
5
4
3
2
Indeterminate after reset
Read: CH1F
0
Timer A Channel 1 Status and Control
CH1IE
MS1A ELS1B ELS1A
$0029
Register (TASC1) Write: 0
R
See page 198. _{Reset: 0}
0
0
0
0
0
$002A
Timer A Channel 1 Register ^Read: _{Bit 15}
14
High (TACH1H) Write:
See page 201. _Reset:
13
12
11
10
Indeterminate after reset
= Unimplemented
R = Reserved
Figure 18-2. TIM I/O Register Summary
1
Bit 0
PS1
PS0
0
0
KBIE1 KBIE0
0
0
9
Bit 8
R
R
0
0
1
Bit 0
R
R
0
0
9
Bit 8
1
1
1
Bit 0
1
1
TOV0 CH0MAX
0
0
9
Bit 8
1
Bit 0
TOV1 CH1MAX
0
0
9
Bit 8
MC68HC908AT32 Data Sheet, Rev. 3.1
Freescale Semiconductor
187