MC68HC908GP32_08 Datasheet, PDF (134/266 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

Serial Communications Interface Module (SCI)
Addr.
$0013
$0014
$0015
$0016
$0017
$0018
$0019
Register Name
Read:
SCI Control Register 1
(SCC1)
Write:
Reset:
Read:
SCI Control Register 2
(SCC2)
Write:
Reset:
Read:
SCI Control Register 3
(SCC3)
Write:
Reset:
Read:
SCI Status Register 1
(SCS1)
Write:
Reset:
Read:
SCI Status Register 2
(SCS2)
Write:
Reset:
Read:
SCI Data Register
(SCDR)
Write:
Reset:
Read:
SCI Baud Rate Register
(SCBR)
Write:
Reset:
Bit 7
LOOPS
0
SCTIE
0
R8
U
SCTE
1
0
R7
T7
0
6
ENSCI
0
TCIE
0
T8
U
TC
5
TXINV
0
SCRIE
0
R
0
SCRF
1
0
0
0
R6
R5
T6
T5
SCP1
0
0
= Unimplemented
4
3
2
1
M
WAKE
ILTY
PEN
0
0
0
0
ILIE
TE
RE
RWU
0
0
0
0
R
ORIE
NEIE
FEIE
0
0
0
0
IDLE
OR
NF
FE
0
0
0
0
BKF
0
0
0
0
R4
R3
R2
R1
T4
T3
T2
T1
Unaffected by reset
SCP0
R
SCR2
SCR1
0
0
0
0
R = Reserved U = Unaffected
Figure 13-2. SCI I/O Register Summary
Bit 0
PTY
0
SBK
0
PEIE
0
PE
0
RPF
0
R0
T0
SCR0
0
13.4.1 Data Format
The SCI uses the standard non-return-to-zero mark/space data format illustrated in Figure 13-3.
8-BIT DATA FORMAT
BIT M IN SCC1 CLEAR
PARITY
BIT
NEXT
START
START
BIT BIT 0 BIT 1 BIT 2 BIT 3 BIT 4 BIT 5 BIT 6 BIT 7 ^STOP BIT
BIT
START
9-BIT DATA FORMAT
BIT M IN SCC1 SET
PARITY
BIT
NEXT
START
BIT BIT 0 BIT 1 BIT 2 BIT 3 BIT 4 BIT 5 BIT 6 BIT 7 BIT 8 STOP BIT
BIT
Figure 13-3. SCI Data Formats
MC68HC908GP32 Data Sheet, Rev. 10
134
Freescale Semiconductor