Figure A-9 Spi Slave Timing (Cpha=1); Table A-20 Spi Slave Mode Timing Characteristics - Motorola MC9S12DT256 User Manual

MC9S12DT256 Device User Guide — V03.07
SS
(INPUT)
SCK
(CPOL = 0)
(INPUT)
SCK
(CPOL = 1)
(INPUT)
MISO
see
note
(OUTPUT)
7
MOSI
(INPUT)
NOTE: Not defined!
In Table A-20 the timing characteristics for slave mode are listed.
Num Characteristic
1 SCK Frequency
1 SCK Period
2 Enable Lead Time
3 Enable Lag Time
4 Clock (SCK) High or Low Time
5 Data Setup Time (Inputs)
6 Data Hold Time (Inputs)
7 Slave Access Time (time to data active)
8 Slave MISO Disable Time
9 Data Valid after SCK Edge
10 Data Valid after SS fall
11 Data Hold Time (Outputs)
12 Rise and Fall Time Inputs
13 Rise and Fall Time Outputs
NOTES:
1. t added due to internal synchronization delay
bus
122
1
2
4 4
9
SLAVE MSB OUT
5 6
MSB IN

Figure A-9 SPI Slave Timing (CPHA=1)

Table A-20 SPI Slave Mode Timing Characteristics

12 13
12 13
11
BIT 6 . . . 1
SLAVE LSB OUT
BIT 6 . . . 1
Symbol
Min
f
DC
sck
t
4
sck
t
4
lead
t
4
lag
t
4
wsck
t
8
su
t
8
hi
t
—
a
t
—
dis
t
—
vsck
t
—
vss
t
20
ho
t
—
rfi
t
—
rfo
3
8
LSB IN
Typ Max
— 1/4
∞
—
— —
— —
— —
— —
— —
— 20
— 22
1
— 30 + t
bus
1
—
30 + t
bus
— —
— 8
— 8
Unit
f
bus
t
bus
t
bus
t
bus
t
bus
ns
ns
ns
ns
ns
ns
ns
ns
ns