MC68HC908AT32 Datasheet, PDF (141/378 Pages) Freescale Semiconductor, Inc – Microcontrollers

Functional Description
Address
$0013
$0014
$0015
$0016
$0017
$0018
$0019
Register Name
SCI Control Register 1 ^Read:
(SCC1) Write:
See page 152. _Reset:
SCI Control Register 2 ^Read:
(SCC2) Write:
See page 154. _Reset:
SCI Control Register 3 ^Read:
(SCC3) Write:
See page 156. _Reset:
SCI Status Register 1 ^Read:
(SCS1) Write:
See page 157. _Reset:
SCI Status Register 2 ^Read:
(SCS2) Write:
See page 159. _Reset:
SCI Data Register ^Read:
(SCDR) Write:
See page 160. _Reset:
SCI Baud Rate Register ^Read:
(SCBR) Write:
See page 160. _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
M
WAKE
0
0
ILIE
TE
0
0
R
ORIE
0
0
IDLE
OR
0
0
0
0
R4
R3
T4
T3
Unaffected by Reset
SCP0
R
0
0
U = Unaffected
Figure 16-2. SCI I/O Register Summary
2
1
Bit 0
ILTY
PEN
PTY
0
0
0
RE
RWU
SBK
0
0
0
NEIE
FEIE
PEIE
0
0
0
NF
FE
PE
0
0
0
BKF
RPF
0
0
0
R2
R1
R0
T2
T1
T0
SCR2
SCR1
SCR0
0
0
0
R = Reserved
16.4.1 Data Format
The SCI uses the standard non-return-to-zero mark/space data format illustrated in Figure 16-3.
8-BIT DATA FORMAT
(BIT M IN SCC1 CLEAR)
PARITY
OR DATA
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
OR DATA
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 16-3. SCI Data Formats
16.4.2 Transmitter
Figure 16-4 shows the structure of the SCI transmitter.
MC68HC908AT32 Data Sheet, Rev. 3.1
Freescale Semiconductor
141