MC9S12T64 Datasheet, PDF (435/608 Pages) Motorola, Inc – Specification

Freescale Semiconductor, Inc.
Serial Communications Interface (SCI)
Functional Description
RXD
SBR12–SBR0
BUS
CLOCK
BAUD RATE
GENERATOR
SCI DATA
REGISTER
RECEIVE
SHIFT REGISTER
RECEIVE
AND WAKEUP
CONTROL
DATA FORMAT
CONTROL
÷16
TRANSMIT
CONTROL
TRANSMIT
T8
SHIFT REGISTER
SCI DATA
REGISTER
RE
RWU
LOOPS
RSRC
M
WAKE
ILT
PE
PT
TE
LOOPS
SBK
RSRC
R8
NF
FE
PF
RAF
ILIE
IDLE
RDRF
OR
RIE
IDLE
INTERRUPT
REQUEST
RDRF/OR
INTERRUPT
REQUEST
TDRE
TC
TIE
TCIE
TDRE
INTERRUPT
REQUEST
TC
INTERRUPT
REQUEST
TXD
Figure 76 Detailed SCI Block Diagram
Data Format
The SCI uses the standard NRZ mark/space data format illustrated in
Figure 77 below.
START
BIT BIT 0
BIT 1
BIT 2
8-BIT DATA FORMAT
PARITY
BIT M IN SCIxCR1 CLEAR
OR DATA
BIT
NEXT
START
BIT 3 BIT 4 BIT 5 BIT 6 BIT 7 STOP BIT
BIT
START
BIT BIT 0
BIT 1
BIT 2
9-BIT DATA FORMAT
BIT M IN SCIxCR1 SET
BIT 3 BIT 4 BIT 5 BIT 6
PARITY
OR DATA
BIT
NEXT
START
BIT 7 BIT 8 STOP BIT
BIT
Figure 77 SCI Data Formats
Serial Communications Interface (SCI)
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MC9S12T64Revision 1.1.1