
Electrical Characteristics
MC68L11E9/E20 Serial Peirpheral Interface Characteristics
MC68HC11E Family — Rev. 4
Technical Data
MOTOROLA
Electrical Characteristics
249
A) SPI Slave Timing (CPHA
= 0)
B) SPI Slave Timing (CPHA
= 1)
Figure 11-15. SPI Timing Diagram (Sheet 2 of 2)
SCK
INPUT
SCK
INPUT
MOSI
INPUT
MISO
OUTPUT
SS
INPUT
1
6
7
MSB IN
BIT 6 . . . 1
LSB IN
MSB OUT
SLAVE LSB OUT
BIT 6 . . . 1
4
2
8
CPOL = 0
CPOL = 1
3
Note: Not defined but normally MSB of character just received
SLAVE
11
SEE
NOTE
9
5
10
11
SCK
INPUT
SCK
INPUT
MOSI
INPUT
MISO
OUTPUT
SS
INPUT
1
6
7
MSB IN
BIT 6 . . . 1
LSB IN
MSB OUT
SLAVE LSB OUT
BIT 6 . . . 1
4
2
8
CPOL = 0
CPOL = 1
3
Note: Not defined but normally LSB of character previously transmitted
SLAVE
11
SEE
NOTE
9
5
10
4