MC9S12DT128B Device User Guide — V01.07

Table A-19 SPI Slave Mode Timing Characteristics

Conditions are shown in Table A-4unless otherwise noted, CLOAD = 200pF on all outputs

Num

C

Rating

Symbol

Min

Typ

Max

Unit

 

 

 

 

 

 

 

 

1

P

Operating Frequency

fop

DC

 

1/4

fbus

1

P

SCK Period tsck = 1./fop

tsck

4

 

2048

tbus

2

D

Enable Lead Time

tlead

1

 

 

tcyc

3

D

Enable Lag Time

tlag

1

 

 

tcyc

4

D

Clock (SCK) High or Low Time

twsck

tcyc 30

 

 

ns

5

D

Data Setup Time (Inputs)

tsu

25

 

 

ns

6

D

Data Hold Time (Inputs)

thi

25

 

 

ns

7

D

Slave Access Time

ta

 

 

1

tcyc

8

D

Slave MISO Disable Time

tdis

 

 

1

tcyc

9

D

Data Valid (after SCK Edge)

tv

 

 

25

ns

 

 

 

 

 

 

 

 

10

D

Data Hold Time (Outputs)

tho

0

 

 

ns

11

D

Rise Time Inputs and Outputs

tr

 

 

25

ns

 

 

 

 

 

 

 

 

12

D

Fall Time Inputs and Outputs

tf

 

 

25

ns

 

 

 

 

 

 

 

 

114

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Motorola MC9S12DJ128B, MC9S12DT128B, MC9S12DB128B, MC9S12DG128B manual Table A-19 SPI Slave Mode Timing Characteristics