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L9177ATR Datasheet(PDF) 24 Page - STMicroelectronics

Part # L9177ATR
Description  Automotive engine management control IC for small engines
PDF  55 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9177ATR Datasheet(HTML) 24 Page - STMicroelectronics

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Symbol
Parameter
Test conditions
Min
Typ
Max
Unit
tCSSO
Access time
See (1)
-
-
500
ns
tSOdis
Output data (SO) disable time
No Capacitor on SO,
See (2)
-
-
500
ns
tlead
Channels select (CS) lead time
See (1)
500
-
-
ns
tSCKFSO
Output valid time
See (1), @ fCLK= 5.4 MHz
60
-
-
ns
tSOCS
Output data (SO) disable time
No capacitor on SO, see (1)
-
500
ns
tSIsetup
Input data (SI) set-up time
@ fCLK= 5.4 MHz
20
-
-
ns
tSIhold
Input data (SI) hold time
@ fCLK= 5.4 MHz
20
-
-
ns
tSCK
CLK period
-
185
-
-
ns
tCSSCK
Clock inactive time after frame
-
600
-
-
ns
tCSN
CS de asserted time
-
600
-
-
ns
1. see Figure 17. SPI timing diagram
2. see Figure 16. SO loading for disable time measurement
Figure 16. SO loading for disable time measurement
VDD
SO
1 kΩ
1 kΩ
+5 V
1.0 V
4.0 V
tSOdis
SO
CS
GADG0412170958PS
Figure 17. SPI timing diagram
t CSSO
tSOCS
tCSSCK
t lead
t SCKCS
t SCKFSO
CS
SCK
DIN
DOUT
DIN23
DOUT23 DOUT22
DOUT21
DOUT20
DOUT...
DOUT...
DOUT...
DOUT0
DIN22
DIN21
DIN20
DIN...
DIN...
DIN1
DIN0
GADG0412171035PS
L9177A
Electrical characteristics
DS12175 - Rev 5
page 24/55



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