|
MC68HC08AZ60A Datasheet, PDF (231/480 Pages) Motorola, Inc – Microcontrollers | |||
|
◁ |
Serial Communications Interface (SCI)
I/O Registers
16.8.1 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 DDRE2 bit in
data direction register E (DDRE).
16.8.2 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).
16.9 I/O Registers
The following I/O registers control and monitor SCI operation:
⢠SCI control register 1 (SCC1)
⢠SCI control register 2 (SCC2)
⢠SCI control register 3 (SCC3)
⢠SCI status register 1 (SCS1)
⢠SCI status register 2 (SCS2)
⢠SCI data register (SCDR)
⢠SCI baud rate register (SCBR)
16.9.1 SCI Control Register 1
SCI control register 1:
⢠Enables loop mode operation
⢠Enables the SCI
⢠Controls output polarity
⢠Controls character length
⢠Controls SCI wakeup method
MC68HC08AZ60A â Rev 0.0
MOTOROLA
Serial Communications Interface (SCI)
Advance Information
231
|
▷ |