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ST72325 bảng dữ liệu(PDF) 149 Page - STMicroelectronics

tên linh kiện ST72325
Giải thích chi tiết về linh kiện  8-BIT MCU WITH 16 TO 60K FLASH/ROM, ADC, CSS, FIVE TIMERS, SPI, SCI, I2C INTERFACE
PDF  193 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72325 bảng dữ liệu(HTML) 149 Page - STMicroelectronics

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12.5 CLOCK AND TIMING CHARACTERISTICS
Subject to general operating conditions for VDD, fCPU, and TA.
12.5.1 General Timings
12.5.2 External Clock Source
Figure 75. Typical Application with an External Clock Source
Notes:
1. Data based on typical application software.
2. Time measured between interrupt event and interrupt vector fetch.
∆t
c(INST) is the number of tCPU cycles needed to finish
the current instruction execution.
3. Data based on design simulation and/or technology characteristics, not tested in production.
Symbol
Parameter
Conditions
Min
Typ 1)
Max
Unit
tc(INST)
Instruction cycle time
23
12
tCPU
fCPU=8MHz
250
375
1500
ns
tv(IT)
Interrupt reaction time 2)
tv(IT) = ∆tc(INST) + 10
10
22
tCPU
fCPU=8MHz
1.25
2.75
µs
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VOSC1H
OSC1 input pin high level voltage
see Figure 75
0.7xVDD
VDD
V
VOSC1L
OSC1 input pin low level voltage
VSS
0.3xVDD
tw(OSC1H)
tw(OSC1L)
OSC1 high or low time 3)
5
ns
tr(OSC1)
tf(OSC1)
OSC1 rise or fall time 3)
15
IL
OSC1 Input leakage current
VSS≤VIN≤VDD
±1
µA
OSC1
OSC2
fOSC
EXTERNAL
ST72XXX
CLOCK SOURCE
Not connected internally
VOSC1L
VOSC1H
tr(OSC1)
tf(OSC1)
tw(OSC1H)
tw(OSC1L)
IL
90%
10%



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