MC68HC908GP32_08 Datasheet, PDF (249/266 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

SS
INPUT
SS PIN OF MASTER HELD HIGH
1
SPSCK OUTPUT
CPOL = 0
NOTE
4
SPSCK OUTPUT
CPOL = 1
NOTE
5
MISO
INPUT
MOSI
OUTPUT
MSB IN
11
MASTER MSB OUT
5
4
BITS 6–1
10
BITS 6–1
Note: This first clock edge is generated internally, but is not seen at the SPSCK pin.
a) SPI Master Timing (CPHA = 0)
3.0-V SPI Characteristics
6
7
LSB IN
11
MASTER LSB OUT
SS
INPUT
SPSCK OUTPUT
CPOL = 0
SS PIN OF MASTER HELD HIGH
1
5
4
SPSCK OUTPUT
CPOL = 1
5
4
MISO
INPUT
10
MOSI
OUTPUT
MSB IN
11
MASTER MSB OUT
BITS 6–1
10
BITS 6–1
NOTE
6
7
LSB IN
NOTE
MASTER LSB OUT
Note: This last clock edge is generated internally, but is not seen at the SPSCK pin.
b) SPI Master Timing (CPHA = 1)
Figure 19-17. SPI Master Timing
MC68HC908GP32 Data Sheet, Rev. 10
Freescale Semiconductor
249