ST72C254G2 datasheet(101/140 Pages) STMICROELECTRONICS

Part #	ST72C254G2

Description	8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, IC INTERFACES

PDF	140 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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101 / 140 page

ST72104G, ST72215G, ST72216G, ST72254G

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FUNCTIONAL OPERATING CONDITIONS (Cont’d)

Figure 56. High LVD Threshold Versus V

DD and f

OSC for ROM devices

Figure 57. Medium LVD Threshold Versus V

DD and f

OSC for ROM devices

Figure 58. Low LVD Threshold Versus VDD and fOSC for ROM devices

2)3)

Notes:

1. LVD typical data are based on TA=25°C. They are given only as design guidelines and are not tested.

2. The minimum VDD rise time rate is needed to insure a correct device power-on and LVD reset. Not tested in production.

3. If the low LVD threshold is selected, when VDD falls below 3.2V, the device is guaranteed to be either functioning or

under reset.

fOSC [MHz]

SUPPLY VOLTAGE [V]

2.5

3.5

4.5

5.5

FUNCTIONAL AREA

DEVICE UNDER

RESET

IN THIS AREA

FUNCTIONALITY

NOT GUARANTEED

IN THIS AREA

VIT-≥3.85

fOSC [MHz]

SUPPLY VOLTAGE [V]

2.5

VIT-≥3.5V

4.5

5.5

FUNCTIONAL AREA

DEVICE UNDER

RESET

IN THIS AREA

FUNCTIONALITY

NOT GUARANTEED

IN THIS AREA

fOSC [MHz]

SUPPLY VOLTAGE [V]

2.5

VIT-≥3.00V

3.5

4.5

5.5

FUNCTIONAL AREA

DEVICE UNDER

RESET

IN THIS AREA

FUNCTIONALITY

NOT GUARANTEED

IN THIS AREA

ST72C254G2 Datasheet(PDF) 101 Page - STMicroelectronics

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