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ST72325AR7-Auto 데이터시트(PDF) 198 Page - STMicroelectronics

부품명 ST72325AR7-Auto
상세설명  SCI asynchronous serial interface
PDF  243 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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ST72325AR7-Auto 데이터시트(HTML) 198 Page - STMicroelectronics

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Obsolete
Product(s)
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Product(s)
Electrical characteristics
ST72325xxx-Auto
198/243
Doc ID 13770 Rev 3
19.5
Clock and timing characteristics
Subject to general operating conditions for VDD, fCPU, and TA.
19.5.1
General timings
19.5.2
External clock source
Figure 76.
Typical application with an external clock source
Table 115.
General timings
Symbol
Parameter
Conditions
Min
Typ(1)
1.
Data based on typical application software.
Max
Unit
tc(INST) Instruction cycle time
23
12
tCPU
fCPU = 8 MHz
250
375
1500
ns
tv(IT)
Interrupt reaction time(2)
tv(IT) = tc(INST) + 10
2.
Time measured between interrupt event and interrupt vector fetch.
t
c(INST) is the number of tCPU cycles
needed to finish the current instruction execution.
10
22
tCPU
fCPU =8MHz
1.25
2.75
µs
Table 116.
External clock source
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VOSC1H
OSC1 input pin high level voltage
See Figure 76
0.7xVDD
VDD
V
VOSC1L
OSC1 input pin low level voltage
VSS
0.3xVDD
tw(OSC1H)
tw(OSC1L)
OSC1 high or low time(1)
1.
Data based on design simulation and/or technology characteristics, not tested in production.
5
ns
tr(OSC1)
tf(OSC1)
OSC1 rise or fall time(1)
15
Ilkg
OSC1 input leakage current
VSS < VIN < VDD
±1
µA
OSC1
OSC2
fOSC
EXTERNAL
ST72XXX
CLOCK SOURCE
Not connected internally
VOSC1L
VOSC1H
tr(OSC1)
tf(OSC1)
tw(OSC1H)
tw(OSC1L)
Ilkg
90%
10%



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