MC68HC08AS20 Datasheet, PDF (372/386 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

SS
(INPUT)
SS pin of master held high.
1
SCK (CPOL = 0)
(OUTPUT)
NOTE
4
SCK (CPOL = 1)
(OUTPUT)
NOTE
5
MISO
(INPUT)
10
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 SCK pin.
a) SPI Master Timing (CPHA = 0)
6
7
LSB IN
11
MASTER LSB OUT
SS
(INPUT)
SCK (CPOL = 0)
(OUTPUT)
SCK (CPOL = 1)
(OUTPUT)
MISO
(INPUT)
10
MOSI
(OUTPUT)
SS pin of master held high.
1
5
4
5
4
MSB IN
11
MASTER MSB OUT
BITS 6–1
10
BITS 6–1
NOTE
6
7
LSB IN
11
MASTER LSB OUT
NOTE
NOTE: This last clock edge is generated internally, but is not seen at the SCK pin.
b) SPI Master Timing (CPHA = 1)
Figure 21-1. SPI Master Timing
Advance Information
372
MC68HC08AS20 —Rev. 4.1
Freescale Semiconductor