MC9S12A256 Motorola, MC9S12A256 Datasheet - Page 122

• Manufacturer Part Number: MC9S12A256
• Description: MC9S12DT256 Device User Guide V03.03
• Manufacturer: Motorola

MC9S12DT256 Device User Guide — V03.03
In Table A-20 the timing characteristics for slave mode are listed.
120
NOTES:
Num
1. t
(CPOL 0)
(CPOL 1)
(OUTPUT)
10
11
12
13
1
1
2
3
4
5
6
7
8
9
(INPUT)
NOTE: Not defined!
bus
(INPUT)
(INPUT)
(INPUT)
MISO
MOSI
SCK
SCK
added due to internal synchronization delay
SS
Data Valid after SS fall
Data Hold Time (Outputs)
Rise and Fall Time Inputs
Rise and Fall Time Outputs
SCK Frequency
SCK Period
Enable Lead Time
Enable Lag Time
Clock (SCK) High or Low Time
Data Setup Time (Inputs)
Data Hold Time (Inputs)
Slave Access Time (time to data active)
Slave MISO Disable Time
Data Valid after SCK Edge
note
see
7
Characteristic
Table A-20 SPI Slave Mode Timing Characteristics
2
SLAVE
4
5
9
MSB IN
Figure A-8 SPI Slave Timing (CPHA=1)
1
MSB OUT
6
4
12
12
11
BIT 6 . . . 1
BIT 6 . . . 1
Symbol
t
t
t
f
t
wsck
t
t
vsck
lead
t
t
t
t
vss
t
sck
sck
t
lag
t
dis
su
ho
rfo
hi
rfi
a
Min
DC
20
—
—
—
—
—
—
4
4
4
4
8
8
13
13
SLAVE LSB OUT
3
LSB IN
Typ
—
—
—
—
—
—
—
—
—
—
—
—
—
—
30 + t
30 + t
Max
8
1 4
20
22
—
—
—
—
—
—
8
8
bus
bus
1
1
Unit
f
t
t
t
t
ns
ns
ns
ns
ns
ns
ns
ns
ns
bus
bus
bus
bus
bus