參數(shù)資料
型號(hào): MC9S08GW64CLH
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: MICROCONTROLLER, PQFP64
封裝: 10 X 10 MM, ROHS COMPLIANT, LQFP-64
文件頁(yè)數(shù): 25/42頁(yè)
文件大?。?/td> 1004K
代理商: MC9S08GW64CLH
Electrical Characteristics
MC9S08GW64 Series MCU Data Sheet, Rev. 3
Freescale Semiconductor
31
3.10.3
SPI Timing
Table 15 and Figure 20 through Figure 23 describe the timing requirements for the SPI system1,2.
1.There is 20 pF load on the SPI ports.
2.There are three types of SPI ports in MC9S08GW64 Series. They are ports for AMR, ports shared with LCD pads
and normal ports. This timing is for normal ports condition.
Table 15. SPI Timing
No.
C
Function
Symbol
Min
Max
Unit
D
Operating frequency
Master
Slave
fop
fBus/2048
0
fBus/2
fBus/4
Hz
D
SPSCK period
Master
Slave
tSPSCK
2
4
2048
tcyc
D
Enable lead time
Master
Slave
tLead
1
2
1
tSPSCK
tcyc
D
Enable lag time
Master
Slave
tLag
1
2
1
tSPSCK
tcyc
D
Clock (SPSCK) high or low time
Master
Slave
tWSPSCK
tcyc –30
tcyc – 30
1024 tcyc
ns
D
Data setup time (inputs)
Master
Slave
tSU
30
ns
D
Data hold time (inputs)
Master
Slave
tHI
0
25
ns
D
Slave access time
ta
—1
tcyc
D
Slave MISO disable time
tdis
—1
tcyc
D
Data valid (after SPSCK edge)
Master
Slave
tv
60
ns
D
Data hold time (outputs)
Master
Slave
tHO
0
ns
D
Rise time
Input
Output
tRI
tRO
tcyc – 25
25
ns
D
Fall time
Input
Output
tFI
tFO
tcyc – 25
25
ns
1
2
3
4
5
6
7
8
9
10
11
12
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