MC68HC711D3_05 Datasheet, PDF (66/138 Pages) Freescale Semiconductor, Inc – Microcontrollers

Serial Communications Interface (SCI)
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
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 6-1. SCI Transmitter Block Diagram
INTERNAL
DATA BUS
MC68HC711D3 Data Sheet, Rev. 2.1
66
Freescale Semiconductor