参数资料
型号: ST72652AR4T1/XXX
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, MICROCONTROLLER, PQFP64
封装: 10 X 10 MM, ROHS COMPLIANT, TQFP-64
文件页数: 37/161页
文件大小: 2656K
代理商: ST72652AR4T1/XXX
ST72651AR6
131/161
Doc ID 7215 Rev 4
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
Figure 73. Typical Application with an External Clock Source
Notes:
1. Time measured between interrupt event and interrupt vector fetch.
Δt
c(INST) is the number of tCPU cycles needed to finish
the current instruction execution.
2. Data based on design simulation and/or technology characteristics, not tested in production.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
tc(INST)
Instruction cycle time
24
12
tCPU
fCPU=8MHz
250
500
1500
ns
tv(IT)
Interrupt reaction time 1)
tv(IT) = Δtc(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
0.7xVDD
VDD
V
VOSC1L
OSC1 input pin low level voltage
VSS
0.3xVDD
tw(OSC1H)
tw(OSC1L)
OSC1 high or low time 2)
15
ns
tr(OSC1)
tf(OSC1)
OSC1 rise or fall time 2)
15
IL
OSCx 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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