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A B C D 1 2 H2 Identification I2C0 I2C1 GP20 P_SDA GP6 H3 H1 1 2 3 1 2 3 GP21 P_SCL GP7 3 4 5 6 +3.3V INT 3V3(OUT) GP3 3V3_EN RUN R5 0R/NC R6 0R/NC R7 0R/NC GP0 GP1 GND GP2 GP3 GP4 GP5 GND GP6 GP7 GP8 GP9 GND GP10 GP11 GP12 GP13 GND GP14 GP15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 U1 GPIO0 GPIO1 GND GPIO2 GPIO3 GPIO4 GPIO5 GND GPIO6 GPIO7 GPIO8 GPIO9 GND GPIO10 GPIO11 GPIO12 GPIO13 GND GPIO14 GPIO15 VBUS VSYS GND 3V3_EN 3V3 ADC_VREF IO28/ADC2 AGND IO27/ADC1 IO26/ADC0 RUN GPIO22 GND GPIO21 GPIO20 GPIO19 GPIO18 GND GPIO17 GPIO16 Pi pico (40P) 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 VBUS VSYS GND 3V3_EN 3V3(OUT) ADC_VREF GP28 GND GP27 GP26 RUN GP22 GND GP21 GP20 GP19 GP18 GND GP17 GP16 +3.3V C6 0.1uF R2 10K INT GND 1 2 3 4 5 6 7 8 U2 32KHz VCC INT/SQW RST NC NC NC NC DS3231 SCL SDA VBAT GND NC NC NC NC 16 15 14 13 12 11 10 9 +3.3V +3.3V R3 10K/NC R4 10K/NC P_SCL P_SDA BAT1 GND I2C Address: 0x68 +3.3V R8 0R/NC R1 1K GND L_PWR1 aveshareW Pico-RTC-DS3231 1 2 3 4 5 6 A B C D
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