MC68HC705C4ACB MOTOROLA [Motorola, Inc], MC68HC705C4ACB Datasheet - Page 121

• Manufacturer Part Number: MC68HC705C4ACB
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

MC68HC705C4A • MC68HSC705C4A — Rev. 3.0
MOTOROLA
SCI TRANSMIT
REQUESTS
BAUD RATE
PD0/
RDI
CLOCK
16X
SCI INTERRUPT
REQUEST
SCCR1 ($000E)
AND CONTROL
PIN BUFFER
•
M
RDRF
RIE
Character Reception — During reception, the receive shift register
shifts characters in from the PD0/RDI pin. The SCI data register
(SCDR) is the read-only buffer between the internal data bus and
the receive shift register.
DISABLE
DRIVER
Serial Communications Interface (SCI)
Figure 10-4. SCI Receiver
IDLE
ILIE
RE
RECOVERY
DATA
OR
RIE
16
SCSR ($0010)
SCCR2 ($000F)
8
RECEIVE SHIFT REGISTER
7 6 5 4 3 2 1 0
IDLE
Serial Communications Interface (SCI)
WAKEUP
LOGIC
MSB RDRF OR
SCDR ($0011)
Technical Data
SCI Operation
121