MC68HC908AZ32ACFU MOTOROLA [Motorola, Inc], MC68HC908AZ32ACFU Datasheet - Page 251

• Manufacturer Part Number: MC68HC908AZ32ACFU
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

68HC908AZ32A — Rev 0.0
MOTOROLA
RECEIVER/ERROR CPU INTERRUPT REQUEST
SPMSTR
DIVIDER
CLOCK
TRANSMITTER CPU INTERRUPT REQUEST
BUS CLOCK
SPE
128
32
2
8
SPR1
SELECT
The SPI module allows full-duplex, synchronous, serial communication
between the MCU and peripheral devices, including other MCUs.
Software can poll the SPI status flags or SPI operation can be interrupt
driven. All SPI interrupts can be serviced by the CPU.
The following paragraphs describe the operation of the SPI module.
CLOCK
Freescale Semiconductor, Inc.
Figure 17-1. SPI Module Block Diagram
SPR0
For More Information On This Product,
Serial Peripheral Interface (SPI)
7
Go to: www.freescale.com
CONTROL
TRANSMIT DATA REGISTER
RECEIVE DATA REGISTER
6
SPI
SHIFT REGISTER
INTERNAL BUS
5
4
3
MODF
SPRF
SPTE
OVRF
SPMSTR
2
1
MODFEN
ERRIE
SPRIE
SPTIE
SPE
0
CLOCK
LOGIC
CPHA
CPOL
SPWOM
M
S
Serial Peripheral Interface (SPI)
CONTROL
LOGIC
PIN
Functional Description
Advance Information
MISO
MOSI
SPSCK
SS
251