Electrical Specifications

Serial Peripheral Interface Characteristics (VDD = 5.0 Vdc ± 10%)

MC68HC908MR16/MC68HC908MR32 — Rev. 4.0 Advance Information

MOTOROLA Electrical Specifications 375

Figure 22-2. SPI Slave Timing
Note: Not defined, but normally MSB of character just received
SLAVE
SS
INPUT
SPCK, CPOL = 0
INPUT
SPCK, CPOL = 1
INPUT
MISO
INPUT
MOSI
OUTPUT
4
5
5
1
4
MSB IN
BITS 6–1
8
610
11
11
NOTESLAVE LSB OUT
9
3
LSB IN
2
7
BITS 6–1
MSB OUT
Note: Not defined, but normally LSB of character previously transmitted
SLAVE
SS
INPUT
SPCK, CPOL = 0
INPUT
SPCK, CPOL = 1
INPUT
MISO
INPUT
MOSI
OUTPUT
4
5
5
1
4
MSB IN
BITS 6–1
8
610
NOTE SLAVE LSB OUT
9
3
LSB IN
2
7
BITS 6–1
MSB OUT
10

a) SPI Slave Timing (CPHA = 0)

b) SPI Slave Timing (CPHA = 1)

11
11