Datasheet

MC68HC908GR8 — Rev 4.0 Technical Data
MOTOROLA Serial Peripheral Interface (SPI) 297
Technical Data — MC68HC908GR8
Section 20. Serial Peripheral Interface (SPI)
20.1 Contents
20.2 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .297
20.3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .298
20.4 Pin Name Conventions and I/O Register Addresses . . . . . . .298
20.5 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .299
20.6 Transmission Formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .303
20.7 Queuing Transmission Data . . . . . . . . . . . . . . . . . . . . . . . . . .309
20.8 Error Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .310
20.9 Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .314
20.10 Resetting the SPI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .316
20.11 Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .317
20.12 SPI During Break Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . .318
20.13 I/O Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .318
20.14 I/O Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .322
20.2 Introduction
This section describes the serial peripheral interface (SPI) module,
which allows full-duplex, synchronous, serial communications with
peripheral devices.
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cale Semiconductor,
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