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AN3254 Datasheet(PDF) 5 Page - STMicroelectronics

Part # AN3254
Description  SPI protocol for the STPMC1 metering device
PDF  24 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3254 Datasheet(HTML) 5 Page - STMicroelectronics

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AN3254
SPI interface timings
Doc ID 17783 Rev 1
5/24
2
SPI interface timings
In Table 1 above, fXTAL1 is the oscillator clock frequency (see the STPMC1 datasheet for
details).
Table 1.
SPI interface timings
Symbol
Parameter
Min.
Typ.
Max.
Unit
FSCLKr
Data read speed
32
MHz
FSCLKw
Data write speed
100
kHz
tDS
Data setup time
20
ns
tDH
Data hold time
0
ns
tON
Data driver on time
20
ns
tOFF
Data driver off time
20
ns
tSYN
SYN active width
2/fXTAL1
s



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