MC68HC08AZ0 Datasheet, PDF (222/444 Pages) Motorola, Inc – Advance Information

Freescale Semiconductor, Inc.
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 R SPMSTR CPOL CPHA SPWOM SPE SPTIE
Write:
Reset: 0
0
1
0
1
0
0
0
SPI Status and Control Register
(SPSCR)
Read: SPRF
Write: R
ERRIE
OVRF
R
MODF SPTE
MODFEN SPR1 SPR0
R
R
Reset: 0
0
0
0
1
0
0
0
Read: R7 R6
R5
R4 R3
R2
R1 R0
SPI Data Register (SPDR)
Write: T7 T6
T5
T4
T3
T2
T1 T0
Reset:
Unaffected by reset
R = Reserved
Figure 1. SPI I/O register summary
MC68HC08AZ0
220
Serial Peripheral Interface Module (SPI)
For More Information On This Product,
Go to: www.freescale.com
4-spi
MOTOROLA