ST72521 STMICROELECTRONICS [STMicroelectronics], ST72521 Datasheet - Page 166
ST72521
Manufacturer Part Number
ST72521
Description
8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, FIVE TIMERS, SPI, SCI, I2C, CAN INTERFACE
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.ST72521.pdf
(211 pages)
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ST72521
12.3.3 Auxiliary Voltage Detector (AVD) Thresholds
Subject to general operating conditions for V
1. Data based on characterization results, not tested in production.
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.
166/211
V
V
V
V
V
V
Symbol
Symbol
V
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)
fall)
rise)
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
1.1
3.95
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
Max
4.2
3.6
4.4
3.8
4.9
1)
1)
1)
1)
1)
Unit
mV
Unit
mV
mV
V
V
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