XC908AS60ACFU Motorola Semiconductor Products, XC908AS60ACFU Datasheet - Page 289

• Manufacturer Part Number: XC908AS60ACFU
• Description: MC68HC908AZ60A, MC68HC908AS60A Hcmos Microcontroller Unit Technical Data
• Manufacturer: Motorola Semiconductor Products

MC68HC908AZ60A — Rev 2.0
MOTOROLA
RECEIVER/ERROR CPU INTERRUPT REQUEST
SPMSTR
DIVIDER
CLOCK
TRANSMITTER CPU INTERRUPT REQUEST
BUS CLOCK
÷ 128
SPE
÷ 32
÷ 2
÷ 8
SPR1
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.
SELECT
CLOCK
Figure 19-1. SPI Module Block Diagram
SPR0
Serial Peripheral Interface (SPI)
7
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
MISO
MOSI
SPSCK
SS
Technical Data
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