MC68HC908GZ8 Datasheet, PDF (219/344 Pages) Motorola, Inc – Microcontrollers

Data Sheet — MC68HC908GZ8
Section 19. Enhanced Serial Communications Interface (ESCI) Module
19.1 Introduction
The enhanced serial communications interface (ESCI) module allows
asynchronous communications with peripheral devices and other microcontroller
units (MCU).
19.2 Features
Features include:
• Full-duplex operation
• Standard mark/space non-return-to-zero (NRZ) format
• Programmable baud rates
• Programmable 8-bit or 9-bit character length
• Fine adjust baud rate prescalers for precise control of baud rate
• Arbiter module:
– Measurement of received bit timings for baud rate recovery without use
of external timer
– Bitwise arbitration for arbitrated UART communications
• LIN specific enhanced features:
– Generation of LIN 1.2 break symbols without extra software steps on
each message
– Break detection filtering to prevent false interrupts
• Separately enabled transmitter and receiver
• Separate receiver and transmitter central processor unit (CPU) interrupt
requests
• Programmable transmitter output polarity
• Two receiver wakeup methods:
– Idle line wakeup
– address mark wakeup
MC68HC908GZ8
Freescale Semiconductor
Enhanced Serial Communications Interface (ESCI) Module
Data Sheet
219