ST72F321AR9TC View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST72F321AR9TC

8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, FIVE TIMERS, SPI, SCI, I2C INTERFACE

STMicroelectronics 

ST72321

12.3.3 Auxiliary Voltage Detector (AVD) Thresholds

Subject to general operating conditions for VDD, fCPU, and TA.

Symbol

VIT+(AVD)

VIT-(AVD)

Vhys(AVD)

∆VIT-

Parameter

1⇒0 AVDF flag toggle threshold

(VDD rise)

0⇒1 AVDF flag toggle threshold

(VDD fall)

AVD voltage threshold hysteresis

Voltage drop between AVD flag set

and LVD reset activated

Conditions

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

VIT+(AVD)-VIT-(AVD)

VIT-(AVD)-VIT-(LVD)

1. Data based on characterization results, not tested in production.

Min

4.4 1)

3.95 1)

3.4 1)

4.2

3.751)

3.21)

Typ

4.6

4.15

3.6

4.4

4.0

3.4

200

450

Max

4.9

4.41)

3.81)

4.65 1)

4.2 1)

3.6 1)

Unit

V

mV

mV

12.3.4 External Voltage Detector (EVD) Thresholds

Subject to general operating conditions for VDD, fCPU, and TA.

Symbol

Parameter

Conditions

VIT+(EVD)

VIT-(EVD)

Vhys(EVD)

1⇒0 AVDF flag toggle threshold

(VDD rise)1)

0⇒1 AVDF flag toggle threshold

(VDD fall)1)

EVD voltage threshold hysteresis

VIT+(EVD)-VIT-(EVD)

1. Data based on characterization results, not tested in production.

Min Typ Max Unit

1.15 1.26 1.35

V

1.1

1.2

1.3

200

mV

140/185

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