参数资料
型号: ST72622L2T1
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP44
封装: TQFP-44
文件页数: 8/134页
文件大小: 815K
代理商: ST72622L2T1
ST7262
105/134
CLOCK AND TIMING CHARACTERISTICS (Cont’d)
12.5.3 External Clock Source
Figure 53. Typical Application with an External Clock Source
Figure 54. Typical Application with a Crystal Resonator
Symbol
Parameter
Condi tions
Min
Typ
Max
Unit
VOSCINH
OSCIN input pin high level voltage
see Figure 53
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
A
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
1
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