ST7LITE1XB datasheet(113/157 Pages) STMICROELECTRONICS

部件名	ST7LITE1XB

功能描述	8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, 5 TIMERS, SPI

PDF	157 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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ST7LITE1xB

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13.3.3 Operating Conditions with Low Voltage Detector (LVD)

13.3.3.1 Operating Conditions with LVD at TA = -40 to 125°C, unless otherwise specified

Notes:

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

2. Use of LVD with capacitive power supply: with this type of power supply, if power cuts occur in the application, it is rec-

ommended to pull VDD down to 0V to ensure optimum restart conditions. Refer to circuit example in Figure 106 on

page 135 and note 4.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VIT+(LVD)

Reset release threshold

(VDD rise)

High Threshold

Med. Threshold

Low Threshold

3.80

3.20

2.65

4.20

3.55

2.85

4.60

3.90

3.10

VIT-(LVD)

Reset generation threshold

(VDD fall)

High Threshold

Med. Threshold

Low Threshold

3.70

3.10

2.50

4.00

3.35

2.70

4.35

3.70

2.90

Vhys

LVD voltage threshold hysteresis

VIT+(LVD)-VIT-(LVD)

200

VtPOR

VDD rise time rate

1)2)

100

ms/V

tg(VDD)

Filtered glitch delay on VDD

Not detected by the LVD

150

IDD(LVD)

LVD/AVD current consumption

200

µA

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