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PMS152 Datasheet(PDF) 39 Page - PADAUK Technology.

Part # PMS152
Description  8bit OTP Type SuLED IO Controller
PDF  91 Pages
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Manufacturer  PADAUK [PADAUK Technology.]
Direct Link  http://www.padauk.com.tw/
Logo PADAUK - PADAUK Technology.

PMS152 Datasheet(HTML) 39 Page - PADAUK Technology.

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PMS152
8bit OTP Type SuLED IO Controller
©Copyright 2020, PADAUK Technology Co. Ltd
Page 39 of 91
PDK-DS-PMS152-EN_V105 –Jun. 9, 2020
5.5.3
Using the comparator and band-gap 1.20V
The internal band-gap module can provide 1.20 volt, it can measure the external supply voltage level. The
band-gap 1.20 volt is selected as minus input of comparator and Vinternal R is selected as plus input, the
supply voltage of Vinternal R is VDD, the VDD voltage level can be detected by adjusting the voltage level of
Vinternal R to compare with band-gap. If N (gpcs[3:0] in decimal) is the number to let Vinternal R closest to
band-gap 1.20 volt, the supply voltage VDD can be calculated by using the following equations:
For using Case 1: VDD = [ 32 / (N+9) ] * 1.20 volt ;
For using Case 2: VDD = [ 24 / (N+1) ] * 1.20 volt ;
For using Case 3: VDD = [ 40 / (N+9) ] * 1.20 volt ;
For using Case 4: VDD= [ 32 / (N+1) ] * 1.20 volt ;
Case 1:
$ GPCS VDD*12/40;
//
4.0V * 12/40 = 1.2V
$ GPCC Enable, BANDGAP, P_R;
//
- input: BANDGAP, + input: P_R(
Vinternal R)
….
if
(GPC
_Out)
// or GPCC.6
{
//
when VDD﹥4V
}
else
{
//
when VDD﹤4V
}



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