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MC68HC908GP20 Datasheet, PDF (269/406 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers | |||
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18.8.2 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).
18.9 I/O Registers
These 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)
18.9.1 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
⢠Controls idle character detection
⢠Enables parity function
⢠Controls parity type
MC68HC908GP20 â Rev 2.1
Freescale Semiconductor
Advance Information
269
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