MC68HC908LJ12 Datasheet, PDF (48/413 Pages) Freescale Semiconductor, Inc – 8-bit microcontroller units

Memory Map
Addr.
Register Name
Bit 7
IRQ Status and Control ^{Read: 0}
$001E
Register Write:
(INTSCR) _{Reset: 0}
$001F
Read:
Configuration Register 1
(CONFIG1)^†
Write:
Reset:
COPRS
0
† One-time writable register after each reset.
†† Reset by POR only.
$0020
Timer 1 Status and ^{Read: TOF}
Control Register Write: 0
(T1SC) _{Reset: 0}
$0021
Timer 1 Counter ^Read:
Register High Write:
(T1CNTH) _Reset:
Bit 15
0
$0022
Timer 1 Counter ^{Read: Bit 7}
Register Low Write:
(T1CNTL) _{Reset: 0}
$0023
Timer 1 Counter Modulo ^Read:
Register High Write:
(T1MODH) _Reset:
Bit 15
1
Timer 1 Counter Modulo ^Read: _{Bit 7}
$0024
Register Low Write:
(T1MODL) _{Reset: 1}
Timer 1 Channel 0 Status ^Read:
$0025
and Control Register Write:
(T1SC0) _Reset:
CH0F
0
0
$0026
Timer 1 Channel 0 ^Read:
Register High Write:
(T1CH0H) _Reset:
Bit 15
X
6
5
4
0
0
0
0
0
0
LVISTOP LVIRSTD LVIPWRD
0
0
1
0
TOIE TSTOP
TRST
0
1
0
14
13
12
0
0
0
6
5
4
0
14
1
6
1
CH0IE
0
14
X
0
13
1
5
1
MS0B
0
13
X
0
12
1
4
1
MS0A
0
12
X
3
IRQF
0
0
0
0
0
11
0
3
0
11
1
3
1
ELS0B
0
11
X
2
0
ACK
0
SSREC
0
PS2
0
10
0
2
0
10
1
2
1
ELS0A
0
10
X
1
Bit 0
IMASK MODE
0
0
STOP COPD
0
0
PS1
PS0
0
0
9
Bit 8
0
0
1
Bit 0
0
0
9
Bit 8
1
1
1
Bit 0
1
1
TOV0 CH0MAX
0
0
9
Bit 8
X
X
U = Unaffected
X = Indeterminate
= Unimplemented
R = Reserved
Figure 2-2. Control, Status, and Data Registers (Sheet 4 of 12)
MC68HC908LJ12 — Rev. 2.1
Freescale Semiconductor
Memory Map
Technical Data
49