MC68HC908AS32A Datasheet, PDF (264/280 Pages) Freescale Semiconductor, Inc – Microcontrollers

Electrical Specifications
SS
(INPUT)
SS pin of master held high.
SCK (CPOL = 0)
(OUTPUT)
NOTE
1
5
4
SCK (CPOL = 1)
(OUTPUT)
NOTE
5
4
MISO
(INPUT)
10
MOSI
(OUTPUT)
MSB IN
11
MASTER MSB OUT
12
13
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)
SS pin of master held high.
1
5
4
SCK (CPOL = 1)
(OUTPUT)
5
4
MISO
(INPUT)
10
MOSI
(OUTPUT)
MSB IN
11
MASTER MSB OUT
12
13
BITS 6–1
10
BITS 6–1
NOTE: This last clock edge is generated internally, but is not seen at the SCK pin.
b) SPI Master Timing (CPHA = 1)
6
7
LSB IN
11
MASTER LSB OUT
Figure 19-1. SPI Master Timing Diagram
NOTE
NOTE
MC68HC908AS32A Data Sheet, Rev. 2.0
264
Freescale Semiconductor