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ST72344 데이터시트(PDF) 160 Page - STMicroelectronics

부품명 ST72344
상세설명  8-BIT MCU WITH UP TO 16K FLASH MEMORY, 10-BIT ADC, TWO 16-BIT TIMERS, TWO I2C, SPI, SCI
PDF  191 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72344 데이터시트(HTML) 160 Page - STMicroelectronics

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13.7 CLOCK AND TIMING CHARACTERISTICS
Subject to general operating conditions for VDD, fOSC, and TA.
13.7.1 General Timings
13.7.2 External Clock Source
Figure 93. Typical Application with an External Clock Source
Notes:
1. Guaranteed by Design. Not tested in production.
2. Data based on typical application software.
3. 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.
4. Data based on design simulation and/or technology characteristics, not tested in production.
13.7.3 Auto Wakeup from Halt Oscillator (AWU)
Symbol
Parameter 1)
Conditions
Min
Typ 2)
Max
Unit
tc(INST)
Instruction cycle time
fCPU=8MHz
23
12
tCPU
250
375
1500
ns
tv(IT)
Interrupt reaction time 3)
tv(IT) = ∆tc(INST) + 10
fCPU=8MHz
10
22
tCPU
1.25
2.75
µs
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VOSC1H
OSC1 input pin high level voltage
see Figure 93
0.7xVDD
VDD
V
VOSC1L
OSC1 input pin low level voltage
VSS
0.3xVDD
tw(OSC1H)
tw(OSC1L)
OSC1 high or low time 4)
15
ns
tr(OSC1)
tf(OSC1)
OSC1 rise or fall time 4)
15
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%
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
fAWU
AWU Oscillator Frequency
50
125
250
kHz
tRCSRT
AWU Oscillator startup time
50
µs



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