mc68hc908ap8cfa Freescale Semiconductor, Inc, mc68hc908ap8cfa Datasheet - Page 181

• Manufacturer Part Number: mc68hc908ap8cfa
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 12
Infrared Serial Communications Interface Module (IRSCI)
12.1 Introduction
The MC68HC908AP64 has two SCI modules:
This section describes SCI2, the infrared serial communications interface (IRSCI) module which allows
high-speed asynchronous communications with peripheral devices and other MCUs. This IRSCI consists
of an SCI module for conventional SCI functions and a software programmable infrared encoder/decoder
sub-module for encoding/decoding the serial data for connection to infrared LEDs in remote control
applications.
Features of the SCI module include the following:
Features of the infrared (IR) sub-module include the following:
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SCI1 is a standard SCI module, and
SCI2 is an infrared SCI module.
Full duplex operation
Standard mark/space non-return-to-zero (NRZ) format
Programmable 8-bit or 9-bit character length
Separately enabled transmitter and receiver
Separate receiver and transmitter CPU interrupt requests
Two receiver wakeup methods:
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Interrupt-driven operation with eight interrupt flags:
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Receiver framing error detection
Hardware parity checking
1/16 bit-time noise detection
IR sub-module enable/disable for infrared SCI or conventional SCI on SCTxD and SCRxD pins
Software selectable infrared modulation/demodulation
(3/16, 1/16 or 1/32 width pulses)
Idle line wakeup
Address mark wakeup
Transmitter empty
Transmission complete
Receiver full
Idle receiver input
Receiver overrun
Noise error
Framing error
Parity error
When the IRSCI is enabled, the SCTxD pin is an open-drain output and
requires a pullup resistor to be connected for proper SCI operation.
MC68HC908AP Family Data Sheet, Rev. 4
NOTE
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