ST72F321 STMICROELECTRONICS [STMicroelectronics], ST72F321 Datasheet - Page 142

• Manufacturer Part Number: ST72F321
• Description: 64/44-PIN 8-BIT MCU WITH 32 TO 60K FLASH/ROM, ADC, FIVE TIMERS, SPI, SCI, I2C INTERFACE
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

ST72321
12.3.3 Auxiliary Voltage Detector (AVD) Thresholds
Subject to general operating conditions for V
1. Data based on characterization results, tested in production for ROM devices only.
12.3.4 External Voltage Detector (EVD) Thresholds
Subject to general operating conditions for V
1. Data based on characterization results, not tested in production.
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V
V
V
∆V
V
V
V
Symbol
Symbol
IT+(AVD)
IT-(AVD)
hys(AVD)
IT+(EVD)
IT-(EVD)
hys(EVD)
IT-
1⇒0 AVDF flag toggle threshold
(V
0⇒1 AVDF flag toggle threshold
(V
AVD voltage threshold hysteresis
Voltage drop between AVD flag set
and LVD reset activated
1⇒0 AVDF flag toggle threshold
(V
0⇒1 AVDF flag toggle threshold
(V
EVD voltage threshold hysteresis
DD
DD
DD
DD
rise)
rise)
fall)
fall)
1)
1)
Parameter
Parameter
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
V
V
DD
DD
IT+(AVD)
IT-(AVD)
IT+(EVD)
, f
, f
CPU
CPU
-V
-V
Conditions
-V
, and T
, and T
Conditions
IT-(LVD)
IT-(AVD)
IT-(EVD)
A
A
.
.
1.15
Min
3.95
1.1
3.75
4.4
3.4
3.2
Min
4.2
1)
1)
1)
1)
1)
Typ
1.26
200
1.2
Typ
4.15
200
450
4.6
3.6
4.4
4.0
3.4
Max
1.35
1.3
4.65
4.2
3.6
Max
4.4
3.8
4.9
1)
1)
1)
1)
1)
Unit
mV
Unit
mV
mV
V
V