RFHCS362F datasheet(12/60 Pages) MICROCHIP

tên linh kiện	RFHCS362F

Giải thích chi tiết về linh kiện	Code Hopping Encoder with UHF ASK/FSK Transmitter

PDF	60 Pages

Scroll/Zoom	100%

nhà sản xuất	MICROCHIP [Microchip Technology]

Trang chủ	http://www.microchip.com

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12 / 60 page

rfHCS362G/362F

DS41189A-page 12

Preliminary

2.1.3

LOW VOLTAGE DETECTOR

A low battery voltage detector onboard the rfHCS362G/

362F can indicate when the operating voltage drops

below a predetermined value. There are eight options

available depending on the VLOW[0..2] configuration

options. The options provided are:

FIGURE 2-4:

rfHCS362 VLOW DETECTOR

(TYPICAL)

FIGURE 2-5:

rfHCS362 VLOW DETECTOR

(TYPICAL)

The output of the low voltage detector is transmitted in

each code word, so the decoder can give an indication

to the user that the transmitter battery is low. Operation

of the LED changes as well to further indicate that the

battery is low and needs replacing.

000

-2.0V

100 -4.0V

001

-2.1V

101 -4.2V

010

-2.2V

110 -4.4V

011

-2.3V

111 -4.6V

1.5

1.7

1.9

2.1

2.3

2.5

2.7

-40

-25

-10

Temperature (°C)

VLOW Option

= 000

= 001

= 010

= 011

Temperature (°C)

3.5

3.7

3.9

4.1

4.3

4.5

4.7

4.9

5.1

5.3

5.5

-40

-25

-10

VLOW Option

= 100

= 101

= 110

= 111

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