MC68HC908GR16 Datasheet, PDF (215/310 Pages) Motorola, Inc – Microcontrollers

Freescale Semiconductor, Inc.
Data Sheet — MC68HC908GR16
Section 16. Serial Peripheral Interface (SPI) Module
16.1 Introduction
This section describes the serial peripheral interface (SPI) module, which allows
full-duplex, synchronous, serial communications with peripheral devices.
16.2 Features
Features of the SPI module include:
• Full-duplex operation
• Master and slave modes
• Double-buffered operation with separate transmit and receive registers
• Four master mode frequencies (maximum = bus frequency ÷ 2)
• Maximum slave mode frequency = bus frequency
• Serial clock with programmable polarity and phase
• Two separately enabled interrupts:
– SPRF (SPI receiver full)
– SPTE (SPI transmitter empty)
• Mode fault error flag with CPU interrupt capability
• Overflow error flag with CPU interrupt capability
• Programmable wired-OR mode
• I²C (inter-integrated circuit) compatibility
• I/O (input/output) port bit(s) software configurable with pullup device(s) if
configured as input port bit(s)
MC68HC908GR16 — Rev. 1.0
MOTOROLA
Serial Peripheral Interface (SPI) Module
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Data Sheet
215