MC68HC908EY16 Datasheet, PDF (249/278 Pages) Motorola, Inc – Microcontrollers

SS
INPUT
SPSCK OUTPUT
CPOL = 0
SS PIN OF MASTER HELD HIGH
1
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)
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 20-1. SPI Master Timing
MC68HC908EY16 • MC68HC908EY8 Data Sheet, Rev. 10
Freescale Semiconductor
249