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ST10 Datasheet(PDF) 37 Page - STMicroelectronics

Part # ST10
Description  16-BIT MCU WITH 128KBYTE FLASH MEMORY
PDF  58 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST10 Datasheet(HTML) 37 Page - STMicroelectronics

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XVI.4.9 - External clock drive XTAL1
VDD =5 V ± 10%
VSS =0 V
TA = 0 to +70 °C
Parameter
Symbol
fCPU =fXTAL
fCPU =fXTAL /2
fCPU =fXTAL *N
N = 1.5/2,/2.5/3/4/5
Unit
min
max
min
max
min
max
Oscillator period
tOSC
SR
401)
1000
20
500
40 * N
100 * N
ns
High time
t1
SR
182)
–
62)
–
102)
–ns
Low time
t2
SR
182)
–
62)
–
102)
–ns
Rise time
t3
SR
–
102)
–
63)
–
102)
ns
Fall time
t4
SR
–
102)
–
62)
–
102)
ns
1. Theoretical minimum. The real minimum value depends on the duty cycle of the input clock signal.
2. The input clock signal must reach the defined levels VIL and VIH2.
Figure 13 : External clock drive XTAL1
t1
t3
t4
VIL
t2
tOSC
VIH2



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