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HCS362 Datasheet(PDF) 7 Page - Microchip Technology |
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HCS362 Datasheet(HTML) 7 Page - Microchip Technology |
7 / 46 page © 2011 Microchip Technology Inc. DS40189E-page 7 HCS362 FIGURE 2-4: HCS362 VLOW DETECTOR (TYPICAL) FIGURE 2-5: HCS362 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. 2.2 Dual Encoder Operation The HCS362 contains two crypt keys (possibly derived from two different Manufacturer’s Codes), but only one Serial Number, one set of Discrimination bits, one 16- bit Synchronization Counter and a single 60-bit Seed value. For this reason the HCS362 can be used as an encoder in multiple (two) applications as far as they share the same configuration: transmission format, baud rate, header and guard settings. The SHIFT input pin (multiplexed with the LED output) is used to select between the two crypt keys. A logic 1 on the SHIFT input pin selects the first crypt key. A logic 0 on the SHIFT input pin will select the second crypt key. 1.5 1.7 1.9 2.1 2.3 2.5 2.7 -40 -25 -10 5 20 35 50 65 80 Temperature (°C) VDD Legend ◆ = 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 5 20 35 50 65 80 VDD Legend ◆ = 000 ■ = 001 ▲ = 010 ✖ = 011 |
Similar Part No. - HCS362_11 |
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Similar Description - HCS362_11 |
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