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MC68HC08AB16A Datasheet, PDF (272/380 Pages) Motorola, Inc – HCMOS Microcontroller Unit | |||
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Freescale Semiconductor, Inc.
Serial Peripheral Interface Module (SPI)
16.13.3 SPSCK (Serial Clock). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294
16.13.4 SS (Slave Select) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294
16.13.5 CGND (Clock Ground) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295
16.14 I/O Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296
16.14.1 SPI Control Register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296
16.14.2 SPI Status and Control Register . . . . . . . . . . . . . . . . . . . . 298
16.14.3 SPI Data Register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301
16.2 Introduction
This section describes the serial peripheral interface (SPI) module,
which allows full-duplex, synchronous, serial communications with
peripheral devices.
16.3 Features
Technical Data
272
Features of the SPI module include the following:
⢠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:
â SPRF (SPI receiver full)
â 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)
MC68HC08AB16A â Rev. 2.0
Serial Peripheral Interface Module (SPI)
For More Information On This Product,
Go to: www.freescale.com
MOTOROLA
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