MC68HC908GZ8 FREESCALE [Freescale Semiconductor, Inc], MC68HC908GZ8 Datasheet - Page 234

• Manufacturer Part Number: MC68HC908GZ8
• Description: M68HC08 Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Serial Peripheral Interface (SPI) Module
234
RECEIVER/ERROR CPU INTERRUPT REQUEST
TRANSMITTER CPU INTERRUPT REQUEST
SPMSTR
DIVIDER
CLOCK
CGMOUT ÷ 2
FROM SIM
SHIFT REGISTER
GENERATOR
÷ 128
SPE
MASTER MCU
BAUD RATE
÷ 32
÷ 2
÷ 8
Figure 17-4. Full-Duplex Master-Slave Connections
SPR1
MC68HC908GZ16 • MC68HC908GZ8 Data Sheet, Rev. 4
SELECT
CLOCK
Figure 17-3. SPI Module Block Diagram
RESERVED
RESERVED
SPR0
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
SPE
MISO
MOSI
0
CLOCK
LOGIC
CPHA
SS
CPOL
SPWOM
SHIFT REGISTER
SLAVE MCU
M
S
CONTROL
LOGIC
PIN
Freescale Semiconductor
MISO
MOSI
SPSCK
SS