
Memory
MC68HC908GT16 MC68HC908GT8 MC68HC08GT16 Data Sheet, Rev. 5.0
34
Freescale Semiconductor
$001A
Keyboard Status
and Control Register
(INTKBSCR)
See page 111.
Read:
Write:
0
0
0
0
KEYF
0
IMASKK
MODEK
ACKK
Reset:
0
0
0
0
0
0
0
0
$001B
Keyboard Interrupt Enable
Register (INTKBIER)
See page 112.
Read:
Write:
Reset:
Read:
Write:
Reset:
Read:
Write:
Reset:
Read:
Write:
KBIE7
KBIE6
KBIE5
KBIE4
KBIE3
KBIE2
KBIE1
KBIE0
0
0
0
0
0
0
0
0
0
$001C
Timebase Module Control
Register (TBCR)
See page 218.
TBIF
TBR2
TBR1
TBR0
TBIE
TBON
R
TACK
0
IRQF1
0
0
0
0
0
0
0
0
0
0
0
0
$001D
IRQ Status and Control
Register (INTSCR)
See page 104.
IMASK1
MODE1
ACK1
0
0
0
0
0
0
0
0
0
0
$001E
Configuration Register 2
(CONFIG2)
See page 58.
R
EXT-
XTALEN
EXT-SLOW
EXT-
CLKEN
OSCENIN-
STOP
R
Reset:
0
0
0
0
0
0
0
0
$001F
Configuration Register 1
(CONFIG1)
See page 58.
Read:
Write:
Reset:
COPRS
LVISTOP
LVIRSTD
LVIPWRD LVI5OR3
(1)
SSREC
STOP
COPD
0
0
0
0
0
0
0
0
1. One-time writable register after each reset, except LVI5OR3 bit. LVI5OR3 bit is only reset via POR (power-on reset).
$0020
Timer 1 Status and Control
Register (T1SC)
See page 231.
Read:
Write:
Reset:
Read:
Write:
Reset:
Read:
Write:
Reset:
Read:
Write:
Reset:
Read:
Write:
Reset:
Read:
Write:
Reset:
TOF
0
0
Bit 15
TOIE
TSTOP
0
0
PS2
PS1
PS0
TRST
0
12
0
1
0
0
0
9
0
$0021
Timer 1 Counter
Register High (T1CNTH)
See page 232.
14
13
11
10
Bit 8
0
0
6
0
5
0
4
0
3
0
2
0
1
0
$0022
Timer 1 Counter
Register Low (T1CNTL)
See page 232.
Bit 7
Bit 0
0
0
0
0
0
0
0
0
$0023
Timer 1 Counter Modulo
Register High (T1MODH)
See page 233.
Bit 15
14
13
12
11
10
9
Bit 8
1
1
1
1
1
1
1
1
$0024
Timer 1 Counter Modulo
Register Low (T1MODL)
See page 233.
Bit 7
6
5
4
3
2
1
Bit 0
1
1
1
1
1
1
1
1
$0025
Timer 1 Channel 0 Status and
Control Register (T1SC0)
See page 233.
CH0F
0
0
CH0IE
MS0B
MS0A
ELS0B
ELS0A
TOV0
CH0MAX
0
0
0
0
0
0
0
Addr.
Register Name
Bit 7
6
5
4
3
2
1
Bit 0
= Unimplemented
R = Reserved
U = Unaffected
Figure 2-2. Control, Status, and Data Registers (Sheet 3 of 7)