ST72321 datasheet(142/189 Pages) STMICROELECTRONICS

Numer części	ST72321

Szczegółowy opis	64/44-PIN 8-BIT MCU WITH 32 TO 60K FLASH/ROM, ADC,FIVE TIMERS, SPI, SCI, I2C INTERFACE

PDF	189 Pages

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Producent	STMICROELECTRONICS [STMicroelectronics]

Strona internetowa	http://www.st.com

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ST72321

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12.3.3 Auxiliary Voltage Detector (AVD) Thresholds

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

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 VDD, fCPU, and TA.

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

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VIT+(AVD)

⇒0 AVDF flag toggle threshold

(VDD rise)

VD level = High in option byte

4.4 1)

4.6

4.9

VD level = Med. in option byte

VD level = Low in option byte

3.95 1)

3.4 1)

4.15

3.6

4.41)

3.81)

VIT-(AVD)

⇒1 AVDF flag toggle threshold

(VDD fall)

VD level = High in option byte

4.2

4.4

4.65 1)

VD level = Med. in option byte

VD level = Low in option byte

3.751)

3.21)

4.0

3.4

4.2 1)

3.6 1)

Vhys(AVD)

AVD voltage threshold hysteresis

VIT+(AVD)-VIT-(AVD)

200

∆V

IT-

Voltage drop between AVD flag set

and LVD reset activated

VIT-(AVD)-VIT-(LVD)

450

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VIT+(EVD)

⇒0 AVDF flag toggle threshold

(VDD rise)

1.15

1.26

1.35

VIT-(EVD)

⇒1 AVDF flag toggle threshold

(VDD fall)

1.1

1.2

1.3

Vhys(EVD)

EVD voltage threshold hysteresis

VIT+(EVD)-VIT-(EVD)

200

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