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ST72325AR7-Auto 데이터시트(PDF) 214 Page - STMicroelectronics

부품명 ST72325AR7-Auto
상세설명  SCI asynchronous serial interface
PDF  243 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
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ST72325AR7-Auto 데이터시트(HTML) 214 Page - STMicroelectronics

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Electrical characteristics
ST72325xxx-Auto
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Doc ID 13770 Rev 3
19.11
Communication interface characteristics
19.11.1
SPI (serial peripheral interface)
Subject to general operating conditions for VDD, fCPU, and TA unless otherwise specified.
Refer to Section 19.8: I/O port pin characteristics for more details on the input/output
alternate function characteristics (SS, SCK, MOSI, MISO).
Table 134.
SPI characteristics
Symbol
Parameter
Conditions
Min
Max
Unit
fSCK
1/tc(SCK)
SPI clock frequency
Master, fCPU =8MHz
fCPU/128 = 0.0625
fCPU/4 = 2
MHz
Slave, fCPU =8MHz
0
fCPU/2 = 4
tr(SCK)
tf(SCK)
SPI clock rise and fall time
see I/O port pin description
tsu(SS)
(1)
SS setup time(2)
Slave
tCPU + 50
ns
th(SS)
(1)
SS hold time
Slave
120
tw(SCKH)
(1)
tw(SCKL)
(1)
SCK high and low time
Master
Slave
100
90
tsu(MI)
(1)
tsu(SI)
(1)
Data input setup time
Master
Slave
100
100
th(MI)
(1)
th(SI)
(1)
Data input hold time
Master
Slave
100
100
ta(SO)
(1)
Data output access time
Slave
0
120
tdis(SO)
(1)
Data output disable time
Slave
240
tv(SO)
(1)
Data output valid time
Slave (after enable edge)
120
th(SO)
(1)
Data output hold time
0
tv(MO)
(1)
Data output valid time
Master (after enable edge)
120
tCPU
th(MO)
(1)
Data output hold time
0
1.
Data based on design simulation and/or characterization results, not tested in production.
2.
Depends on fCPU. For example, if fCPU = 8 MHz, then tCPU = 1 / fCPU = 125 ns and tsu(SS) = 175 ns.



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