mc68hc708mp16 Freescale Semiconductor, Inc, mc68hc708mp16 Datasheet - Page 254

• Manufacturer Part Number: mc68hc708mp16
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Serial Peripheral Interface Module (SPI)
13.5 Functional Description
Technical Data
254
RECEIVER/ERROR CPU INTERRUPT REQUEST
SPMSTR
DIVIDER
CLOCK
TRANSMITTER CPU INTERRUPT REQUEST
(FROM SIM)
CGMOUT ³ 2
÷ 128
SPE
÷ 32
÷ 2
÷ 8
SPR1
Figure 13-1
shows the locations and contents of the SPI I/O registers.
SELECT
CLOCK
RESERVED
RESERVED
Figure 13-1. SPI Module Block Diagram
SPR0
Serial Peripheral Interface Module (SPI)
7
shows the structure of the SPI module and
CONTROL
TRANSMIT DATA REGISTER
RECEIVE DATA REGISTER
6
SPI
SHIFT REGISTER
INTERNAL BUS
5
4
3
MODF
OVRF
SPRF
SPTE
SPMSTR
2
1
MODFEN
ERRIE
SPRIE
SPTIE
DMAS
SPE
0
CLOCK
LOGIC
CPHA
CPOL
SPWOM
M
S
CONTROL
LOGIC
MC68HC708MP16
PIN
Freescale Semiconductor
Figure 13-2
MISO
MOSI
SPSCK
SS
—
Rev. 3.1