MC68HC908AT32 Datasheet, PDF (204/378 Pages) Freescale Semiconductor, Inc – Microcontrollers

Timer Interface (TIMB)
PTD4/ATD12/TBCLK
INTERNAL
BUS CLOCK
TCLK
PRESCALER
TSTOP
TRST
16-BIT COUNTER
16-BIT COMPARATOR
TMODH:TMODL
CHANNEL 0
16-BIT COMPARATOR
TCH0H:TCH0L
16-BIT LATCH
CHANNEL 1
16-BIT COMPARATOR
TCH1H:TCH1L
16-BIT LATCH
PRESCALER SELECT
PS2
PS1
PS0
ELS0B ELS0A
CH0F
MS0A
ELS1B ELS1A
MS0B
MS1A
CH1F
TOF
TOIE
TOV0
CH0MAX
CH0IE
TOV1
CH1MAX
CH1IE
Figure 19-1. TIMB Block Diagram
INTER-
RUPT
LOGIC
PTE2
LOGIC
INTER-
RUPT
LOGIC
PTF4/TBCH0
PTE3
LOGIC
INTER-
RUPT
LOGIC
PTF5/TBCH1
Addr.
$0040
$0041
$0042
$0043
$0044
204
Register Name
Bit 7
6
5
4
3
Timer B Status and Control ^{Read: TOF}
TOIE TSTOP
0
0
Register (TBSCR) Write: 0
TRST
R
See page 212. _{Reset: 0}
0
1
0
0
Timer B Counter Register High ^{Read: Bit 15}
14
13
12
11
(TBCNTH) Write: R
R
R
R
R
See page 213. _{Reset: 0}
0
0
0
0
Timer B Counter Register Low ^{Read: Bit 7}
6
5
4
3
(TBCNTL) Write: R
R
R
R
R
See page 213. _{Reset: 0}
0
0
0
0
Timer B Modulo Register High ^Read: _{Bit 15}
14
13
12
11
(TBMODH) Write:
See page 214. _{Reset: 1}
1
1
1
1
Timer B Modulo Register Low ^Read: _{Bit 7}
6
5
4
3
(TBMODL) Write:
See page 214. _{Reset: 1}
1
1
1
1
R = Reserved
Figure 19-2. TIMB I/O Register Summary
MC68HC908AT32 Data Sheet, Rev. 3.1
2
1
Bit 0
PS2
PS1
PS0
0
0
0
10
9
Bit 8
R
R
R
0
0
0
2
1
Bit 0
R
R
R
0
0
0
10
9
Bit 8
1
1
1
2
1
Bit 0
1
1
1
Freescale Semiconductor