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ST7262 データシート(PDF) 106 Page - STMicroelectronics

部品番号 ST7262
部品情報  LOW SPEED USB 8-BIT MCU WITH 3 ENDPOINTS, FLASH OR ROM MEMORY, LVD, WDG, 10-BIT ADC, 2 TIMERS, SCI, SPI
PDF  139 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST7262 データシート(HTML) 106 Page - STMicroelectronics

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CLOCK AND TIMING CHARACTERISTICS (Cont’d)
12.5.3 External Clock Source
Note:
1. Refer to Figure 58 for more information.
Figure 58. Typical Application with an External Clock Source
12.5.4 Crystal Oscillator Output Drive Level
Figure 59. Typical Application with a Crystal Resonator
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VOSCINH
OSCIN input pin high level voltage
see Figure 58
0.7xVDD
VDD
V
VOSCINL
OSCIN input pin low level voltage
VSS
0.3xVDD
tw(OSCINH)
tw(OSCINL)
OSCIN high or low time 1)
15
ns
tr(OSCIN)
tf(OSCIN)
OSCIN rise or fall time1)
15
IL
OSCx Input leakage current
VSS≤VIN≤VDD
±1
µA
OSCIN
OSCOUT
fOSC
EXTERNAL
ST72XXX
CLOCK SOURCE
Not connected internally
VOSCINL
VOSCINH
tr(OSCIN)
tf(OSCIN)
tw(OSCINH)
tw(OSCINL)
IL
90%
10%
Symbol
Parameter
Conditions
Typ
Unit
POSCOUT
Oscillator OSCOUT pin drive level
At 5V / 25°C
1
mW
OSCOUT
OSCIN
fOSC
CL1
CL2
i2
RF
ST72XXX
RESONATOR
200
Ω<R
S<400Ω



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