MC68HC11PH8 Datasheet, PDF (95/264 Pages) Motorola, Inc – High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcomputer Unit

T8 SCDRH/SCDRL (transmit buffer)
LOOPS
WOMS
M
WAKE
ILT
PE
PT
10/11-bit TX shift register
H87
0L
TXD1
LOOPS
M
PE
PT
TE
SBK
Transmitter
control
ST4XCK
clock
WOMS
TIE
TCIE
RIE
ILIE
TE
RE
RWU
SBK
Flag control
WAKE
PE
PT
RE
RWU
M
LOOPS
ILT
Receiver
control
5
WOMS
10/11-bit RX shift register _Data
87
0
recovery
STOP
START
R8 SCDRH/SCDRL (receive buffer)
RXD1
SCSR1
SCSR2
MC68HC11PH8
OR
RIE ^&
IDLE
ILIE ^&
RDRF
RIE ^&
TC
TCIE ^&
TDRE
TIE ^&
+
SCI interrupt request
Note: = always reads as zero
Internal data bus
Figure 5-2 SCI1 block diagram
SERIAL COMMUNICATIONS INTERFACE
TPG
MOTOROLA
5-3