參數(shù)資料
型號: ST72F324B
廠商: 意法半導(dǎo)體
英文描述: 5V Range 8-Bit MCU With 8 TO 32K FLASH/ROM, 10-Bit ADC, 4 Timers, SPI, SCI Interface(具有ICP,IAP,Nested Interrupt,TLI,ROP的8位MCU)
中文描述: 5V范圍內(nèi)的8位8到32K閃存/ ROM,10位ADC,4個計時器,SPI和SCI接口(具有比較方案,國際檢察官聯(lián)合會,嵌套中斷,中華語文研習(xí)所,人事登記的8位微控制器)
文件頁數(shù): 123/167頁
文件大小: 1641K
代理商: ST72F324B
ST72324B
123/167
12.6 CLOCK AND TIMING CHARACTERISTICS
Subject to general operating conditions for V
DD
, f
CPU
, and T
A
.
12.6.1 General Timings
12.6.2 External Clock Source
Figure 61. 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 t
CPU
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
t
c(INST)
Instruction cycle time
2
3
12
t
CPU
ns
t
CPU
μ
s
f
CPU
=8MHz
250
10
1.25
375
1500
22
2.75
t
v(IT)
Interrupt reaction time
2)
t
v(IT)
=
t
c(INST)
+ 10
f
CPU
=8MHz
Symbol
V
OSC1H
V
OSC1L
t
w(OSC1H)
t
w(OSC1L)
t
r(OSC1)
t
f(OSC1)
I
L
Parameter
Conditions
Min
V
DD
-1
V
SS
Typ
Max
V
DD
V
SS
+1
Unit
OSC1 input pin high level voltage
OSC1 input pin low level voltage
see
Figure 61
V
OSC1 high or low time
3)
5
ns
OSC1 rise or fall time
3)
15
OSC1 Input leakage current
V
SS
V
IN
V
DD
±1
μ
A
OSC1
OSC2
f
OSC
EXTERNAL
CLOCK SOURCE
ST72XXX
Not connected internally
V
OSC1L
V
OSC1H
t
r(OSC1)
t
f(OSC1)
t
w(OSC1H)
t
w(OSC1L)
I
L
90%
10%
1
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