MC68HC08AZ16 Datasheet, PDF (190/527 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Serial Communications Interface Module (SCI)
I/O signals
I/O signals
Port E shares two of its pins with the SCI module. The two SCI I/O pins
are:
• PTE0/TxD — Transmit data
• PTE1/RxD — Receive data
PTE0/TxD (transmit
data)
The PTE0/TxD pin is the serial data output from the SCI transmitter. The
SCI shares the PTE0/TxD pin with port E. When the SCI is enabled, the
PTE0/TxD pin is an output regardless of the state of the DDRE0 bit in
data direction register E (DDRE).
PTE1/RxD (receive
data)
The PTE1/RxD pin is the serial data input to the SCI receiver. The SCI
shares the PTE1/RxD pin with port E. When the SCI is enabled, the
PTE1/RxD pin is an input regardless of the state of the DDRE1 bit in data
direction register E (DDRE).
21-sci
MOTOROLA
Serial Communications Interface Module (SCI)
MC68HC08AZ32
189