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ST7263B Datasheet(PDF) 102 Page - STMicroelectronics

Part # ST7263B
Description  LOW SPEED USB 8-BIT MCU FAMILY WITH FLASH/ROM, UP TO 512 BYTES RAM, 8-BIT ADC, WDG, TIMER, SCI & I²C
PDF  132 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST7263B Datasheet(HTML) 102 Page - STMicroelectronics

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CLOCK AND TIMING CHARACTERISTICS (Cont’d)
13.5.3 External Clock Source
Figure 50. Typical Application with an External Clock Source
Notes:
1. Data based on design simulation and/or technology characteristics, not tested in production.
Figure 51. Typical Application with a Crystal Resonator
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VOSCINH
OSCIN input pin high level voltage
see Figure 50
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%
OSCOUT
OSCIN
fOSC
CL1
CL2
i2
RF
ST72XXX
RESONATOR



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