Freescale Semiconductor, Inc.
Serial Communications Interface (SCI)
T8
Transmit buffer
LOOPS
10/11-bit TX shift register
WOMS
TXD1
H 8 7
0 L
†
1
M
ST4XCK
clock
WAKE
ILT
LOOPS
M
WOMS
S C CR
PE
PE
Transmitter
control
PT
PT
TE
B
SBK
S
TIE
Flag control
TCIE
RIE
ILIE
TE
WAKE
PE
PT
RE
RE
Receiver
control
RWU
SBK
RWU
M
LOOPS
ILT
WOMS
10/11-bit RX shift register
Data
recovery
RXD1
8 7
0
STOP
START
R8
Receive buffer
SCSR1
SCSR2
OR
&
&
&
RIE
IDLE
&
ILIE
RDRF
RIE
SCI interrupt request
+
TC
&
TCIE
Note: † = always reads as zero
TDRE
TIE
Internal data bus
Technical Data
MC68HC11P2 — Rev 1.0
Serial Communications Interface (SCI)
For More Information On This Product,
Go to: www.freescale.com
FREESCALE [ Freescale ]
