参数资料
型号: ST72F324K2B3
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDIP32
封装: 0.400 INCH, SHRINK, PLASTIC, DIP-32
文件页数: 20/156页
文件大小: 1012K
代理商: ST72F324K2B3
ST72324J/K
116/156
OPERATING CONDITIONS (Cont’d)
12.3.2 Operating Conditions with Low Voltage Detector (LVD)
Subject to general operating conditions for VDD,fCPU, and TA.
Notes:
1. LVD typical data are based on TA=25°C. They are given only as design guidelines and are not tested.
2. Data based on characterization results, not tested in production.
3. Applicable only in low voltage devices (planned).
4. The VDD rise time rate condition is needed to insure a correct device power-on and LVD reset. Not tested in production.
12.3.3 Auxiliary Voltage Detector (AVD) Thresholds
Subject to general operating condition for VDD,fCPU, and TA.
1. AVD typical data are based on TA=25°C. They are given only as design guidelines and are not tested.
2. Data based on characterization results, not tested in production.
3. Applicable only in low voltage devices (planned).
Symbol
Parameter
Conditions
Min
Typ 1)
Max
Unit
VIT+(LVD)
Reset release threshold
(VDD rise)
VD level = High in option byte
4.0 2)
4.2
4.5
V
VD level = Med. in option byte3)
VD level = Low in option byte3)
3.55 2)
2.95 2)
3.75
3.15
4.0
3.35
VIT-(LVD)
Reset generation threshold
(VDD fall)
VD level = High in option byte
3.8
4.0
4.25
VD level = Med. in option byte3)
VD level = Low in option byte3)
3.35
2.8
3.55
3.0
3.75
3.15
Vhys(LVD)
LVD voltage threshold hysteresis
VIT+(LVD)-VIT-(LVD)
150
200
250
mV
VtPOR
VDD rise time rate
4)
5
s/V
tg(VDD)
Filtered glitch delay on VDD
2)
Not detected by the LVD
40
ns
Symbol
Parameter
Conditions
Min
Typ 1)
Max
Unit
VIT+(AVD)
1
0 AVDF flag toggle threshold
(VDD rise)
VD level = High in option byte
4.4 2)
4.6
4.9
V
VD level = Med. in option byte3)
VD level = Low in option byte3)
3.95 2)
3.4 2)
4.15
3.6
4.4
3.8
VIT-(AVD)
0
1 AVDF flag toggle threshold
(VDD fall)
VD level = High in option byte
4.2
4.4
4.65
VD level = Med. in option byte3)
VD level = Low in option byte3)
3.75
3.2
4.0
3.4
4.2
3.6
Vhys(AVD)
AVD voltage threshold hysteresis
VIT+(AVD)-VIT-(AVD)
200
mV
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