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| 38 || GPIO20 for buzzer control <span style="color:red;">(New add from V2.1 )</span>
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| 36 || GPIO16 for battery charging control <span style="color:red;">(New add from V2.5 )</span>
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{| class="wikitable"
! Pin No. !! GPIO No. !! Remark !! Ver 1.2 !! Ver 1.3 !! Ver 2.0 !! Ver 2.1 !! Ver 2.2 !! Ver 2.3!! Ver 2.5|-| 2, 4 || || 5V || √ || √ || √ || √ || √ || √||√
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| 23, 4 5 || || 5V I2C for RTC and battery fuel-gauge systems || √ || √ || √ || √ || √ || √ || √
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| 3, 5 6 || || I2C for RTC and battery fuel-gauge systems Ground || √ || √ || √ || √ || √ || √ || √
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| 6 29 || GPIO05 || Ground Power management || √ || √ || √ || √ || √ || √ || √
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| 29 31 || GPIO05 GPIO06 || for AC power loss detection<br>(PLD jumper inserted, <br>High=Power loss,Low=Power management supply normal) || √ || √ || √ || √ || √ || √ || √
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| 31 32 || GPIO06 GPIO12 || for AC power loss detection<br>(PLD jumper inserted, <br>High=Power loss,Low=Power supply normal) management || √ || √ || √ || √ || √ || √ || √
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| 32 33 || GPIO12 GPIO13 || Power management || √ || √ || √ || || √ || √ || √
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| 33 37 || GPIO13 GPIO26 || Power management <br>GPIO13 is replaced to GPIO26 from Ver 2.0 || | √ | || √ || √ || √ || √|| √
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| 37 38 || GPIO26 GPIO20 || Power management<br>GPIO13 is replaced to GPIO26 from Ver 2.0 for Buzzer control || || || || √ || √ || √ || √
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| 38 36 || GPIO20 GPIO16 || for Buzzer battery charging control || || || || √ || √ || √||√| √
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