mc9s12vr48 Freescale Semiconductor, Inc, mc9s12vr48 Datasheet - Page 345

• Manufacturer Part Number: mc9s12vr48
• Description: S12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 11
Serial Peripheral Interface (S12SPIV5)
11.1
The SPI module allows a duplex, synchronous, serial communication between the MCU and peripheral
devices. Software can poll the SPI status flags or the SPI operation can be interrupt driven.
11.1.1
11.1.2
The SPI includes these distinctive features:
11.1.3
The SPI functions in three modes: run, wait, and stop.
Freescale Semiconductor
Revision
Number
V05.00
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Master mode and slave mode
Selectable 8 or 16-bit transfer width
Bidirectional mode
Slave select output
Mode fault error flag with CPU interrupt capability
Double-buffered data register
Serial clock with programmable polarity and phase
Control of SPI operation during wait mode
Introduction
Revision Date
Glossary of Terms
Features
Modes of Operation
24 Mar 2005
MOMI
MOSI
MISO
SISO
SCK
SPI
SS
11.3.2/11-349
Sections
Affected
MC9S12VR Family Reference Manual, Rev. 2.2
Serial Peripheral Interface
Slave Select
Serial Clock
Master Output, Slave Input
Master Input, Slave Output
Master Output, Master Input
Slave Input, Slave Output
Preliminary - Subject to Change Without Notice
Table 11-1. Revision History
- Added 16-bit transfer width feature.
Description of Changes
345