ST72F324BJ STMICROELECTRONICS [STMicroelectronics], ST72F324BJ Datasheet - Page 140

• Manufacturer Part Number: ST72F324BJ
• Description: 8-bit MCU, 3.8 to 5.5 V operating range with 8 to 32 Kbyte Flash/ROM, 10-bit ADC, 4 timers, SPI, SCI
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Electrical characteristics
12.4
12.4.1
Table 86.
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.
12.4.2
Table 87.
1. Data based on characterization results, tested in production for ROM devices only.
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V
V
V
V
Symbol
V
Symbol
V
t
Vt
hys(LVD)
IT+(LVD)
hys(AVD)
g(VDD)
IT+(AVD)
IT-(LVD)
IT-(AVD)
∆V
POR
IT-
Reset release threshold (V
Reset generation threshold (V
LVD voltage threshold hysteresis
V
Filtered glitch delay on V
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
DD
DD
DD
LVD/AVD characteristics
Operating conditions with LVD
Subject to general operating conditions for T
Operating conditions with LVD
Auxiliary voltage detector (AVD) thresholds
Subject to general operating conditions for T
AVD thresholds
rise time
rise)
fall)
Parameter
(1)
Parameter
DD
DD
(1)
rise)
DD
(1)
fall)
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
Flash devices
8/16K ROM devices
32K ROM devices
Not detected by the LVD
IT+(LVD)
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
IT+(AVD)
IT-(AVD)
-V
Conditions
IT-(LVD)
-V
A
A
-V
Conditions
.
.
IT-(LVD)
IT-(AVD)
(2)
(2)
(2)
(2)
3.55
2.95
3.35
6µs/V
4.0
2.8
Min
150
3.8
(1)
(1)
3.95
3.75
(1)
(1)
(1)
4.4
3.4
3.2
Min
4.2
(1)
(1)
(1)
(1)
(1)
3.75
3.15
3.55
Typ
200
4.2
4.0
3.0
4.15
Typ
200
450
4.6
3.6
4.4
4.0
3.4
100ms/V
20ms/V
∝ ms/V
3.35
4.25
3.75
3.15
4.0
4.65
Max
250
4.5
4.4
3.8
4.2
3.6
40
Max
ST72324B
4.9
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
Unit
Unit
mV
mV
ns
V
V