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PFS172 Datasheet(PDF) 35 Page - PADAUK Technology.

Part # PFS172
Description  8bit MTP Type MCU with 8-bit ADC
PDF  92 Pages
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Manufacturer  PADAUK [PADAUK Technology.]
Direct Link  http://www.padauk.com.tw/
Logo PADAUK - PADAUK Technology.

PFS172 Datasheet(HTML) 35 Page - PADAUK Technology.

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PFS172
8bit MTP MCU with 8-bit ADC
©Copyright 2020, PADAUK Technology Co. Ltd
Page 35 of 92
PDK-DS-PFS172-EN_V000-May 8, 2020
5.5. Comparator
One hardware comparator is built inside the PFS172; Fig.4 shows its hardware diagram. It can compare
signals between two pins or with either internal reference voltage Vinternal R or internal bandgap reference
voltage. The two signals to be compared, one is the plus input and the other one is the minus input. For the
minus input of comparator can be PA3, PA4, Internal bandgap 1.20 volt, PB6, PB7 or Vinternal R selected by bit
[3:1] of gpcc register, and the plus input of comparator can be PA4 or Vinternal R selected by bit 0 of gpcc
register.
The comparator result can be selected through gpcs.7 to forcibly output to PA0 whatever input or output state.
It can be a direct output or sampled by Timer2 clock (TM2_CLK) which comes from Timer2 module. The
output polarity can be also inverted by setting gpcc.4 register. The comparator output can be used to request
interrupt service or read through gpcc.6.
Fig.4: Hardware diagram of comparator
PA3/CIN-
PA4/CIN-
Bandgap
PB6/CIN-
PB7/CIN-



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