MC68HC812A4 Datasheet, PDF (228/342 Pages) Motorola, Inc – 16-bit device composed of standard on-chip peripheral modules connected by an intermodule bus. Modules include

Serial Communications Interface Module (SCI)
Addr.
Register Name
Bit 7
6
5
Read: R7
R6
R5
SCI 0 Data Register
$00C7
Low (SC0DRL) Write: T7
T6
T5
See page 257.
Reset:
$00C8
SCI 1 Baud Rate
Register High
(SC1BDH)
See page 249.
Read:
Write:
Reset:
BTST
0
BSPL
0
BRLD
0
SCI 1 Baud Rate
$00C9 Register Low (SC1BDL)
See page 249.
Read:
Write:
Reset:
SBR7
0
SBR6
0
SBR5
0
$00CA
SCI 1 Control Register
1 (SC1CR1)
See page 250.
Read:
Write:
Reset:
LOOPS
0
WOMS
0
RSRC
0
Read:
SCI 1 Control Register
TIE
TCIE
RIE
$00CB
2 (SC1CR2) Write:
See page 252.
Reset: 0
0
0
Read: TDRE
TC
RDRF
SCI 1 Status Register 1
$00CC
(SC1SR1) Write:
See page 254.
Reset: 1
1
0
Read: 0
0
0
SCI 1 Status Register 2
$00CD
(SC1SR2) Write:
See page 256.
Reset: 0
0
0
Read: R8
0
SCI 1 Data Register
T8
$00CE
High (SC1DRH) Write:
See page 257.
Reset:
Read: R7
R6
R5
SCI 1 Data Register
$00CF
Low (SC1DRL) Write: T7
T6
T5
See page 257.
Reset:
= Unimplemented
4
3
R4
R3
T4
T3
Unaffected by reset
SBR12 SBR11
0
0
SBR4 SBR3
0
0
M
WAKE
0
0
ILIE
TE
0
0
IDLE
OR
0
0
0
0
0
0
0
0
Unaffected by reset
R4
R3
T4
T3
Unaffected by reset
2
R2
T2
SBR10
0
SBR2
1
ILT
0
RE
0
NF
0
0
0
0
R2
T2
Figure 14-2. SCI Register Map (Sheet 2 of 2)
1
R1
T1
SBR9
0
SBR1
0
PE
0
RWU
0
FE
0
0
0
0
R1
T1
Bit 0
R0
T0
SBR8
0
SBR0
0
PT
0
SBK
0
PF
0
RAF
0
0
R0
T0
MC68HC812A4 — Rev. 3.0
228
Serial Communications Interface Module (SCI)
Advance Information
MOTOROLA