S912XHY128F0VLM Datasheet, PDF (757/802 Pages) Freescale Semiconductor, Inc – S12 Microcontrollers

Electrical Characteristics
In Table A-27 the timing characteristics for slave mode are listed.
Table A-27. SPI Slave Mode Timing Characteristics
Num C
Characteristic
Sy
mb
Min
Typ
Max
ol
1
D SCK frequency
1
D SCK period
f_sck
DC
—
4*t_bus1
t_{sck MAX(1250, 4*tbus)2} —
MIN(8,f_bus/4)¹
MIN(0.8,f_bus/4)²
∞
2
D Enable lead time
t_lead
4
—
—
3
D Enable lag time
t_lag
4
—
—
4
D Clock (SCK) high or low time
t_wsc
4
—
—
k
5
D Data setup time (inputs)
t_su
8
—
—
6
D Data hold time (inputs)
t_hi
8
—
—
7
D Slave access time (time to data active) t_a
—
—
20
8
D Slave MISO disable time
9
D Data valid after SCK edge
10
D Data valid after SS fall
t_dis
—
t_vsc
—
k
t_vss
—
—
22
—
29 + 0.5 ⋅ t_bus3
—
29 + 0.5 ⋅ t_bus1
11
D Data hold time (outputs)
t_ho
20
—
—
12
D Rise and fall time inputs
t_rfi
—
—
8
13
D Rise and fall time outputs
t_rfo
—
—
8
1^{SPI on non-motor pad ports (Port S or Por t H), or SPI on motor pad ports with all Slew Rate control disable}
2^{SPI on Port V with slew rate control enabled. All the SPI pins slew rate control should be enabled}
3 ^{0.5 t}bus ^{added due to internal synchronization delay}
Unit
MHZ
ns
t_bus
t_bus
t_bus
ns
ns
ns
ns
ns
ns
ns
ns
ns
MC9S12XHY-Family Reference Manual, Rev. 1.01
Freescale Semiconductor
757