MC68HC908GR8A_07 Datasheet, PDF (32/260 Pages) Freescale Semiconductor, Inc – Microcontrollers

Memory
Addr.
Register Name
Bit 7
6
5
4
3
2
1
Bit 0
$0018
SCI Data Register ^{Read: R7}
R6
R5
R4
R3
R2
R1
R0
(SCDR) Write: T7
T6
T5
T4
T3
T2
T1
T0
See page 154. _Reset:
Unaffected by reset
$0019
SCI Baud Rate Register ^Read:
(SCBR) Write:
See page 154. _Reset:
0
SCP1
SCP0
R
SCR2
SCR1
SCR0
0
0
0
0
0
0
0
Keyboard Status Read: 0
0
0
0
KEYF
0
$001A
and Control Register
(INTKBSCR)
Write:
ACKK
IMASKK MODEK
See page 103. Reset: 0
0
0
0
0
0
0
0
$001B
Keyboard Interrupt Enable ^Read:
Register (INTKBIER) Write:
KBIE3 KBIE2 KBIE1 KBIE0
See page 104. _Reset:
0
0
0
0
0
0
0
0
Timebase Module Control ^{Read: TBIF}
TBR2
TBR1
TBR0
0
TBIE
TBON
R
$001C
Register (TBCR) Write:
TACK
See page 197. _Reset:
0
0
0
0
0
0
0
0
IRQ Status and Control ^Read:
0
0
0
0
IRQF
0
IMASK MODE
$001D
Register (INTSCR) Write:
ACK
See page 98. _Reset:
0
0
0
0
0
0
0
0
$001E
Configuration Register 2 Read: 0
(CONFIG2)⁽¹⁾
See page 75.
Write:
0
0
0
0
0
OSC-
STOPENB
SCIBDSRC
Reset: 0
0
0
0
0
0
0
0
$001F
Configuration Register 1 ^Read:
(CONFIG1)⁽¹⁾ Write:
See page 76. _Reset:
COPRS
0
LVISTOP
LVIRSTD
LVIPWRD
LVI5OR3
(Note 1)
0
0
0
0
SSREC
0
STOP
0
COPD
0
1. One-time writable register after each reset, except LVI5OR3 bit. LVI5OR3 bit is only reset via POR (power-on reset).
Timer 1 Status and Control ^{Read: TOF}
TOIE TSTOP
0
0
$0020
Register (T1SC) Write: 0
TRST
See page 209. _Reset:
0
0
1
0
0
Timer 1 Counter ^{Read: Bit 15}
14
13
12
11
$0021 Register High (T1CNTH) Write:
See page 210. _Reset:
0
0
0
0
0
PS2
PS1
PS0
0
0
0
10
9
Bit 8
0
0
0
= Unimplemented
R = Reserved
U = Unaffected
Figure 2-2. Control, Status, and Data Registers (Sheet 3 of 7)
MC68HC908GR8A • MC68HC908GR4A Data Sheet, Rev. 5
32
Freescale Semiconductor