MC68HC08AS20 Datasheet, PDF (45/386 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

Addr.
$0017
$0018
$0019
$001A
$001B
Register Name
Bit 7
6
5
4
3
2
1
Bit 0
Read: 0
0
0
0
0
0
BKF RPF
SCI Status Register 2
(SCS2)
Write:
R
R
R
R
R
R
R
R
Reset: 0
0
0
0
0
0
0
0
Read: R7
R6
R5
R4
R3
R2
R1
R0
SCI Data Register
(SCDR)
Write:
T7
T6
T5
T4
T3
T2
T1
T0
Reset:
Unaffected by Reset
Read: 0
SCI Baud Rate Register
(SCBR)
Write:
Reset: 0
0
SCP1 SCP0
0
0
0
SCR2 SCR1 SCR0
0
0
0
0
Read: 0
IRQ Status and Control
Register (ISCR)
Write:
Reset: 0
0
0
0
0
0
IRQF
0
ACK
IMASK MODE
0
0
0
0
0
Reserved
$001C
$001D
$001E
$001F
$0020
$0021
Read:
PLL Control Register
(PCTL)
Write:
Reset:
Read:
PLL Bandwidth Control
Register (PBWC)
Write:
Reset:
Read:
PLL Programming Register
(PPG)
Write:
Reset:
Read:
Mask Option Register
(MOR)
Write:
Reset:
Read:
TIM Status and Control
Register (TSC)
Write:
Reset:
PLLIE
0
AUTO
0
MUL7
0
R
TOF
0
0
PLLF _{PLLON BCS}
1
0
1
0
1
LOCK _ACQ
XLD
0
0
0
0
0
MUL6 MUL5 MUL4 VRS7
1
1
0
0
ROMSEC LVIRSTD LVIPWRD SSREC
R
R
R
R
Unaffected by Reset
TOIE
TSTOP
0
TRST
0
0
1
0
0
Reserved
1
1
0
0
VRS6
1
COPL
R
PS2
0
1
1
0
0
VRS5
1
STOP
R
PS1
0
1
1
0
0
VRS4
0
COPD
R
PS0
0
$0022
Read:
TIM Counter Register High
(TCNTH)
Write:
Reset:
Bit 15
0
14
13
0
0
= Unimplemented
12
11
10
9
Bit 8
0
0
0
0
0
R = Reserved
U = Unaffected
X = Indeterminate
Figure 2-2. Control, Status, and Data Registers (Sheet 3 of 7)
MC68HC08AS20 — Rev. 4.1
Freescale Semiconductor
Advance Information
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