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ST72C171 Fiches technique(PDF) 137 Page - STMicroelectronics

No de pièce ST72C171
Description  8-BIT MCU with 8K FLASH, ADC, WDG, SPI, SCI, TIMERS SPGAs Software Programmable Gain Amplifiers, OP-AMP
PDF  152 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72C171 Fiches technique(HTML) 137 Page - STMicroelectronics

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COMMUNICATION INTERFACE CHARACTERISTICS (Cont’d)
Figure 95. SPI Slave Timing Diagram with CPHA=11)
Figure 96. SPI Master Timing Diagram 1)
Notes:
1. Measurement points are done at CMOS levels: 0.3xVDD and 0.7xVDD.
2. When no communication is on-going the data output line of the SPI (MOSI in master mode, MISO in slave mode) has
its alternate function capability released. In this case, the pin status depends of the I/O port configuration.
SS INPUT
CPHA=0
MOSI INPUT
MISO OUTPUT
CPHA=0
tw(SCKH)
tw(SCKL)
tr(SCK)
tf(SCK)
ta(SO)
tsu(SI)
th(SI)
MSB OUT
BIT6 OUT
LSB OUT
see
CPOL=0
CPOL=1
tsu(SS)
th(SS)
tdis(SO)
th(SO)
see
note 2
note 2
tc(SCK)
HZ
tv(SO)
MSB IN
LSB IN
BIT1 IN
SS INPUT
CPHA=0
MOSI OUTPUT
MISO INPUT
CPHA=0
CPHA=1
CPHA=1
tc(SCK)
tw(SCKH)
tw(SCKL)
th(MI)
tsu(MI)
tv(MO)
th(MO)
MSB IN
MSB OUT
BIT6 IN
BIT6 OUT
LSB OUT
LSB IN
see note 2
seenote2
CPOL=0
CPOL=1
CPOL=0
CPOL=1
tr(SCK)
tf(SCK)



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