MC68HC711xxxx Motorola, MC68HC711xxxx Datasheet - Page 120

• Manufacturer Part Number: MC68HC711xxxx
• Description: Microcontrollers
• Manufacturer: Motorola

Serial Communications Interface (SCI)
Data Sheet
120
SEE NOTE
Note: Refer to
BAUD RATE
RECEIVER
CLOCK
REQUESTS
SCI Tx
PD0
RxD
Figure B-1. EVBU Schematic Diagram
SCCR1 SCI CONTROL 1
SCI INTERRUPT
AND CONTROL
PIN BUFFER
REQUEST
DDD0
DISABLE
DRIVER
Figure 7-2. SCI Receiver Block Diagram
WAKEUP
LOGIC
RE
Serial Communications Interface (SCI)
M
RECOVERY
RDRF
RIE
IDLE
ILIE
OR
RIE
DATA
÷16
for an example of connecting RxD to a PC.
SCSR SCI STATUS 1
SCCR2 SCI CONTROL 2
(8) 7 6 5 4 3 2 1 0
Rx SHIFT REGISTER
RWU
10 (11) - BIT
MSB
8
SCDR Rx BUFFER
M68HC11E Family — Rev. 5
INTERNAL
DATA BUS
8
8
READ ONLY
ALL 1s
MOTOROLA