MC68HC08AZ16 Datasheet, PDF (213/527 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Serial Peripheral Interface Module (SPI)
Functional description
Figure 1 summarizes the SPI I/O registers and Figure 2 show the
structure of the SPI module.
Register name
R/W Bit 7 6
5
4
3
2
1 Bit 0
Read:
SPI Control Register (SPCR)
SPRIE
Write:
R SPMSTR CPOL CPHA SPWOM SPE SPTIE
Reset: 0
0
1
0
1
0
0
0
SPIStatusandControlRegister ^{Read: SPRF}
(SPSCR) _{Write: R}
ERRIE
OVRF
R
MODF
R
SPTE
MODFEN SPR1
R
SPR0
Reset: 0
0
0
0
1
0
0
0
Read: R7 R6
R5
R4
R3
SPI Data Register (SPDR)
Write: T7
T6
T5
T4
T3
R2
R1 R0
T2
T1 T0
Reset:
Unaffected by reset
R = Reserved
Figure 1. SPI I/O register summary
MC68HC08AZ32
212
Serial Peripheral Interface Module (SPI)
4-spi
MOTOROLA