耳掛式(設計參考電路)5 4 3 2 1 U1 GPIO2 GPIO3 P14 P15 D2.5V DGND R2 C6 1M #RESET 0.1UF BATMONI BDDATA BDATA1 BDCLK BnDEN BnPWR BXTLEN BPKTCTL RxD TxD UK ey UP DOWN RCVO+ RCVOVREF PLLLPF MICIN MICPS R5 TC2 + 10UF C D2.5V VDD0 VDD1 VDD2 AVDD0 AVDD1 AVDD2 OSC12MI OSC12MO OSC32KI OSK32KO MTEST TEST TEST00 TEST01 TEST02 GND0 GND1 GND2 GND3 AGND FIN FOUT 5 28 44 17 20 22 43 42 6 7 30 11 12 29 4 8 31 36 41 24 14 13 A2.5V C1 33PF 1 R1 1M Y1 12MHz DGND C3 33PF DGND C7 R3 0R 10M Y2 32.768KHz C14 20PF DGND C15 20PF DGND BXTLEN 0.01UF BnDEN BDDATA BDATA1 BDCLK 12MHz BPKTCTL C16 C2 TEST PORT1 1 2 +2.8V 2 U2 3 C9 CAP CAP 4 OUT GND IN GND 1 2 C4 C5 + TC1 10UF D 39 33 32 40 37 38. 9 25 47 45 46 48 2 3 1 35 34 10 26 27 16 15 21 23 18 19 P16 GPIO2 GPIO3 P14 P15 P17 RCin BATLOW BDDATA BDATA1 BDCLK BnDEN BnPWR BXTLEN BP……