MC68HC11KA4TS Datasheet, PDF (38/68 Pages) Motorola, Inc – 8-Bit Microcontroller

TRANSMITTER
BAUD RATE
CLOCK
SCDR Tx BUFFER
(WRITE-ONLY)
10 (11) - BIT Tx SHIFT REGISTER
H (8) 7 6 5 4 3 2 1 0 L
DDD1
PIN BUFFER
PD1/
AND CONTROL
TxD
PARITY
GENERATOR
TRANSMITTER
CONTROL LOGIC
FORCE PIN
DIRECTION (OUT)
SCCR1 SCI CONTROL 1
SCSR INTERRUPT STATUS
TDRE
TIE
TC
TCIE
SCCR2 SCI CONTROL 2
SCI Rx
REQUESTS
SCI INTERRUPT
REQUEST
Figure 10 SCI Transmitter Block Diagram
INTERNAL
DATA BUS
MOTOROLA
38
MC68HC11KA4
MC68HC11KA4TS/D