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ST7-STICK45 датащи(PDF) 91 Page - STMicroelectronics

номер детали ST7-STICK45
подробное описание детали  8-bit microcontroller with single voltage Flash memory, data EEPROM, ADC, timers, SPI
PDF  124 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST7-STICK45 датащи(HTML) 91 Page - STMicroelectronics

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13.5 CLOCK AND TIMING CHARACTERISTICS
Subject to general operating conditions for VDD, fOSC, and TA.
13.5.1 General Timings
13.5.2 External Clock Source
Notes:
1. Guaranteed by Design. Not tested in production.
2. Data based on typical application software.
3. Time measured between interrupt event and interrupt vector fetch.
∆t
c(INST) is the number of tCPU cycles needed to fin-
ish the current instruction execution.
4. Data based on design simulation and/or technology characteristics, not tested in production.
Figure 61. Typical Application with an External Clock Source
Symbol
Parameter 1)
Conditions
Min
Typ 2)
Max
Unit
tc(INST)
Instruction cycle time
fCPU=8MHz
23
12
tCPU
250
375
1500
ns
tv(IT)
Interrupt reaction time 3)
tv(IT) = ∆tc(INST) + 10
fCPU=8MHz
10
22
tCPU
1.25
2.75
µs
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VCLKINH
CLKIN input pin high level voltage
see Figure 61
0.7xVDD
VDD
V
VCLKINL
CLKIN input pin low level voltage
VSS
0.3xVDD
tw(CLKINH)
tw(CLKINL)
CLKIN high or low time 4)
15
ns
tr(CLKIN)
tf(CLKIN)
CLKIN rise or fall time 4)
15
IL
CLKIN Input leakage current
VSS≤VIN≤VDD
±1
µA
CLKIN
fOSC
EXTERNAL
ST72XXX
CLOCK SOURCE
VCLKINL
VCLKINH
tr(CLKIN)
tfCLKIN)
tw(CLKINH)
tw(CLKINL)
IL
90%
10%
1



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