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ST10F166BQ1 데이터시트(PDF) 43 Page - STMicroelectronics

부품명 ST10F166BQ1
상세설명  16-BIT MCU WITH 256K FLASH MEMORY
PDF  62 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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ST10F166BQ1 데이터시트(HTML) 43 Page - STMicroelectronics

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18.7 AC Characteristics
The specification of the timings depends on the CPU clock signal that is used in the
respective device. In this regard the specification for the ST10F166 and the
ST10F166-16 are different. While the ST10F166-16 directly uses the clock signal fed
to XTAL1 and therefore has to take into account the duty cycle variation of this signal,
the ST10F166 derives its CPU clock from the XTAL1 signal via a 2:1 prescaler and
therefore is independant from these variations.
For these reasons the following pages provide the timing specifications for ST10F166
and for ST10F166-16 separately (where applicable).
External Clock Drive XTAL1 for the ST10F166
V
CC =5 V ± 10 %;
V
SS =0V
T
A = 0 to +70
°C
Figure 13. External Clock Drive XTAL1
Parameter
Symbol
Max. CPU Clock
=20 MHz
Variable CPU Clock
1/2TCL = 1 to 20 MHz
Unit
min.
max.
min.
max.
Oscillator period
TCL
SR
25
25
25
500
ns
High time
t
1
SR
6
–
6
–
ns
Low time
t
2
SR
6
–
6
–
ns
Rise time
t3
SR
–
5
–
5
ns
Fall time
t
4
SR
–
5
–
5
ns



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