MC68HC08XL36 Datasheet, PDF (229/362 Pages) Freescale Semiconductor, Inc – HCMOS Microcontroller Unit

Freescale Semiconductor, Inc.
Serial Communications Interface Module (SCI)
Pin Name Conventions
– Receiver Full
– Idle Receiver Input
– Receiver Overrun
– Noise Error
– Framing Error
– Parity Error
• Receiver Framing Error Detection
• Hardware Parity Checking
• 1/16 Bit-Time Noise Detection
Pin Name Conventions
The generic names of the SCI I/O pins are:
• RxD (receive data)
• TxD (transmit data)
SCI I/O lines are implemented by sharing parallel I/O port pins. The full
name of an SCI input or output reflects the name of the shared port pin.
Table 1 shows the full names and the generic names of the SCI I/O
pins.The generic pin names appear in the text of this section.
Table 1. Pin Name Conventions
Generic Pin Names
Full Pin Names
RxD
PE1/RxD
TxD
PE2/TxD
Functional Description
Figure 1 shows the structure of the SCI module. The SCI allows
full-duplex, asynchronous, NRZ serial communication between the MCU
and remote devices, including other MCUs. The transmitter and receiver
of the SCI operate independently, although they use the same baud rate
3-sci_d
MOTOROLA
Serial Communications Interface Module (SCI)
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MC68HC08XL36
229