參數(shù)資料
型號(hào): MC9S08QE64CQD
廠商: FREESCALE SEMICONDUCTOR INC
元件分類(lèi): 微控制器/微處理器
英文描述: 8-BIT, FLASH, 50.33 MHz, MICROCONTROLLER, PQFP44
封裝: 10 X 10 MM, 2 MM, HEIGHT, 0.80 MM PITCH, QFP-44
文件頁(yè)數(shù): 20/52頁(yè)
文件大小: 834K
代理商: MC9S08QE64CQD
Electrical Characteristics
MC9S08QE128 Series Advance Information Data Sheet, Rev. 3
Freescale Semiconductor
27
3.10.3
SPI Timing
Table 14 and Figure 21 through Figure 24 describe the timing requirements for the SPI system.
Table 14. SPI Timing
No.
C
Function
Symbol
Min
Max
Unit
—D
Operating frequency
Master
Slave
fop
fBus/2048
0
fBus/2
fBus/4
Hz
1D
SPSCK period
Master
Slave
tSPSCK
2
4
2048
tcyc
2D
Enable lead time
Master
Slave
tLead
1
/2
1
tSPSCK
tcyc
3D
Enable lag time
Master
Slave
tLag
1
/2
1
tSPSCK
tcyc
4D
Clock (SPSCK) high or low time
Master
Slave
tWSPSCK
tcyc –30
tcyc – 30
1024 tcyc
ns
5D
Data setup time (inputs)
Master
Slave
tSU
15
ns
6D
Data hold time (inputs)
Master
Slave
tHI
0
25
ns
7
D
Slave access time
ta
—1
tcyc
8
D
Slave MISO disable time
tdis
—1
tcyc
9D
Data valid (after SPSCK edge)
Master
Slave
tv
25
ns
10
D
Data hold time (outputs)
Master
Slave
tHO
0
ns
11
D
Rise time
Input
Output
tRI
tRO
tcyc – 25
25
ns
12
D
Fall time
Input
Output
tFI
tFO
tcyc – 25
25
ns
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