mc68hc908gr16 Freescale Semiconductor, Inc, mc68hc908gr16 Datasheet - Page 198

• Manufacturer Part Number: mc68hc908gr16
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Serial Peripheral Interface (SPI) Module
198
RECEIVER/ERROR CPU INTERRUPT REQUEST
TRANSMITTER CPU INTERRUPT REQUEST
SPMSTR
DIVIDER
CLOCK
CGMOUT ÷ 2
FROM SIM
SHIFT REGISTER
GENERATOR
÷ 128
MASTER MCU
BAUD RATE
SPE
÷ 32
÷ 2
÷ 8
Figure 16-4. Full-Duplex Master-Slave Connections
SPR1
SELECT
CLOCK
Figure 16-3. SPI Module Block Diagram
RESERVED
RESERVED
SPR0
MC68HC908GR16 Data Sheet, Rev. 5.0
MISO
MOSI
SPSCK
SS
7
CONTROL
TRANSMIT DATA REGISTER
RECEIVE DATA REGISTER
6
SPI
SHIFT REGISTER
INTERNAL BUS
5
4
V
DD
3
MODF
OVRF
SPRF
SPTE
SPMSTR
2
1
MODFEN
SPSCK
ERRIE
SPTIE
SPRIE
MISO
MOSI
SPE
0
CLOCK
LOGIC
CPHA
SS
CPOL
SPWOM
SHIFT REGISTER
SLAVE MCU
M
S
CONTROL
LOGIC
PIN
Freescale Semiconductor
MISO
MOSI
SPSCK
SS