s908qc16vdse Freescale Semiconductor, Inc, s908qc16vdse Datasheet - Page 123

• Manufacturer Part Number: s908qc16vdse
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 13
Enhanced Serial Communications Interface (ESCI) Module
13.1 Introduction
The enhanced serial communications interface (ESCI) module allows asynchronous communications
with peripheral devices and other microcontroller units (MCU).
The ESCI module shares its pins with general-purpose input/output (I/O) port pins. See
port location of these shared pins. The ESCI baud rate clock source is controlled by a bit (ESCIBDSRC)
located in the configuration register.
13.2 Features
Features include:
Freescale Semiconductor
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Full-duplex operation
Standard mark/space non-return-to-zero (NRZ) format
Programmable baud rates
Programmable 8-bit or 9-bit character length
Separately enabled transmitter and receiver
Separate receiver and transmitter interrupt requests
Programmable transmitter output polarity
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
Idle line
Address mark
Transmitter empty
Transmission complete
Receiver full
Idle receiver input
Receiver overrun
Noise error
Framing error
Parity error
MC68HC908QC16 • MC68HC908QC8 • MC68HC908QC4 Data Sheet, Rev. 4
Figure 13-1
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