mc68hc908gr8a Freescale Semiconductor, Inc, mc68hc908gr8a Datasheet - Page 177

• Manufacturer Part Number: mc68hc908gr8a
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
Addr.
$0010
$0011
$0012
RECEIVER/ERROR CPU INTERRUPT REQUEST
SPI Status and Control
TRANSMITTER CPU INTERRUPT REQUEST
Register Name
SPMSTR
SPI Control Register
DIVIDER
CLOCK
Register (SPSCR)
SPI Data Register
BUSCLK
See page 191.
See page 192.
See page 194.
÷ 128
SPE
÷ 32
(SPCR)
(SPDR)
÷ 2
÷ 8
SPR1
MC68HC908GR8A • MC68HC908GR4A Data Sheet, Rev. 5
Reset:
Reset:
Reset:
Read:
Read:
Read:
Write:
Write:
Write:
SELECT
CLOCK
Figure 15-2. SPI Module Block Diagram
Figure 15-3. SPI I/O Register Summary
SPR0
SPRIE
SPRF
Bit 7
R7
T7
R
0
0
7
= Reserved
CONTROL
ERRIE
TRANSMIT DATA REGISTER
RECEIVE DATA REGISTER
R6
T6
6
R
6
0
0
SPI
SHIFT REGISTER
INTERNAL BUS
5
4
SPMSTR
OVRF
R5
T5
3
5
1
0
MODF
OVRF
SPRF
SPTE
SPMSTR
2
1
MODFEN
MODF
CPOL
Unaffected by reset
ERRIE
SPTIE
SPRIE
SPE
R4
T4
0
CLOCK
4
0
0
LOGIC
CPHA
= Unimplemented
CPHA
SPTE
CPOL
R3
T3
SPWOM
3
1
1
M
S
MODFEN
SPWOM
CONTROL
LOGIC
R2
T2
PIN
2
0
0
Functional Description
SPR1
SPE
R1
T1
1
0
0
MISO
MOSI
SPSCK
SS
SPTIE
SPR0
Bit 0
R0
T0
0
0
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