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ST72361 Datasheet(PDF) 186 Page - STMicroelectronics

Part # ST72361
Description  8-BIT MCU WITH FLASH OR ROM, 10-BIT ADC, 5 TIMERS, SPI, 2x LINSCI
PDF  224 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72361 Datasheet(HTML) 186 Page - STMicroelectronics

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12.5 CLOCK AND TIMING CHARACTERISTICS
Subject to general operating conditions for VDD, fOSC, and TA.
12.5.1 General Timings
12.5.2 External Clock Source
Figure 99. Typical Application with an External Clock Source
Notes:
1. Data based on typical application software.
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.
3. Data based on design simulation and/or technology characteristics, not tested in production.
Symbol
Parameter
Conditions
Min
Typ1)
Max
Unit
tc(INST)
Instruction cycle time
2
3
12
tCPU
fCPU = 8 MHz
250
375
1500
ns
tv(IT)
Interrupt reaction time2)
tv(IT) = ∆tc(INST) + 10
10
22
tCPU
fCPU = 8 MHz
1.25
2.75
µs
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VOSC1H
OSC1 input pin high level voltage
see Figure 99
0.7 x VDD
VDD
V
VOSC1L
OSC1 input pin low level voltage
VSS
0.3 x VDD
tw(OSC1H)
tw(OSC1L)
OSC1 high or low time3)
25
ns
tr(OSC1)
tf(OSC1)
OSC1 rise or fall time3)
5
IL
OSCx 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)
IL
90%
10%



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