參數(shù)資料
型號： ST72F321M
廠商： 意法半導(dǎo)體
英文描述： 80-PIN 8-BIT MCU WITH 32 TO 60K FLASH/ROM, ADC, FIVE TIMERS, SPI, SCI, I2C INTERFACE(具有ICP,IAP,Nested Interrupt,TLI,ROP的8位MCU)
中文描述： 80引腳8位微控制器32至60,000閃存/ ROM，ADC的，5個定時器，SPI和SCI的I2C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)： 137/178頁
文件大小： 3121K
代理商： ST72F321M
ST72F321M, ST72321BM
137/178
OPERATING CONDITIONS
(Cont’d)
11.3.2 Operating Conditions with Low Voltage Detector (LVD)
Subject to general operating conditions for V
DD
, f
CPU
, and T
A
.
Notes:
1. Data based on characterization results, tested in production for ROM devices only.
2. If the medium or low thresholds are selected, the detection may occur outside the specified operating voltage range.
Below 3.8V, device operation is not guaranteed.
3. Data based on characterization results, not tested in production.
3. When Vt
is faster than 100
μ
s/V, the Reset signal is released after a delay of max. 42μs after V
DD
crosses the
V
IT+(LVD)
threshold.
11.3.3 Auxiliary Voltage Detector (AVD) Thresholds
Subject to general operating conditions for V
DD
, f
CPU
, and T
A
.
1. Data based on characterization results, tested in production for ROM devices only.
11.3.4 External Voltage Detector (EVD) Thresholds
Subject to general operating conditions for V
DD
, f
CPU
, and T
A
.
1. Data based on characterization results, not tested in production.
Symbol
Parameter
Conditions
Min
4.0
1)
3.55
1)
2.95
1)
3.8
3.35
1)
2.8
1)
Typ
4.2
3.75
3.15
4.0
3.55
3.0
200
Max
4.5
4.0
1)
3.35
1)
4.25
1)
3.75
1))
3.15
1)
Unit
V
IT+(LVD)
Reset release threshold
(V
DD
rise)
VD level = High in option byte
VD level = Med. in option byte
2)
VD level = Low in option byte
2)
VD level = High in option byte
VD level = Med. in option byte
2)
VD level = Low in option byte
2)
V
V
IT-(LVD)
Reset generation threshold
(V
DD
fall)
V
hys(LVD)
Vt
POR
LVD voltage threshold hysteresis
V
IT+(LVD)
-V
IT-(LVD)
V
DD
rise time
3)2)
V
DD
glitches filtered (not detect-
ed) by LVD
3)
mV
LVD enabled
6
μ
s/V
100ms/V
t
g(VDD)
40
ns
Symbol
Parameter
Conditions
Min
4.4
1)
3.95
1)
3.4
1)
4.2
1)
3.75
1)
3.2
1)
Typ
4.6
4.15
3.6
4.4
4.0
3.4
200
Max
4.9
1)
4.4
1)
3.8
1)
4.65
1)
4.2
1)
3.6
1)
Unit
V
IT+(AVD)
1
0 AVDF flag toggle threshold
(V
DD
rise)
VD level = High in option byte
VD level = Med. in option byte
VD level = Low in option byte
VD level = High in option byte
VD level = Med. in option byte
VD level = Low in option byte
V
IT+(AVD)
-V
IT-(AVD)
V
V
IT-(AVD)
0
1 AVDF flag toggle threshold
(V
DD
fall)
V
hys(AVD)
AVD voltage threshold hysteresis
Voltage drop between AVD flag set
and LVD reset activated
mV
V
IT-
V
IT-(AVD)
-V
IT-(LVD)
450
mV
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
V
IT+(EVD)
1
0 AVDF flag toggle threshold
(V
DD
rise)
1)
0
1 AVDF flag toggle threshold
(V
DD
fall)
1)
EVD voltage threshold hysteresis
1.15
1.26
1.35
V
V
IT-(EVD)
1.1
1.2
1.3
V
hys(EVD)
V
IT+(EVD)
-V
IT-(EVD)
200
mV
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