A B C D 1 S5V GND TXD RXD 1 2 3 4 5 1 2 3 4 5 6 7 8 M1 Vcc D- D+ ID GND MicroUSB接口 U3 GND TXD RXD V3 UD+ UD- NC OUT# VCC R232 RTS# DTR# DCD# RI# DSR# CTS# 16 15 14 13 12 11 10 9 CH340C 串口芯片 GND C10 电容 100pF ASPL PB0 PB1 ASP LED1 LED2 LED LED LED 1K R4 电阻 1K R5 电阻 1K R6 电阻 GND GND GND 2 3 4 3V R2 电阻 10K PB5 5.1K R3 电阻 B BT1 SBAT3V GND S5V 3V电池 BP1 5R R1 蜂鸣器 电阻 3V S5V E C VT1 PNP三极管 S8550 C2 S5V 电容 100pF GND S3V GND S3V SBAT3V PC13 OSC321 OSC322 OSC1 OSC2 NRST GND 3V PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 PB0 PB1 PB2 PB10 PB11 GND 3V 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 U4 VBAT PC13-TAMPER-RTC PC14-OSC32_IN PC15-OSC32_OUT PD0-OSC_IN PD1-OSC_OUT NRST VSSA VDDA PA0-WKUP PA1 PA2 PA3 PA4 PA5 PA6 PA7 PB0 PB1 PB2 PB10 PB11 VSS_1 VDD_1 STM32F103_48PIN单片机 BOOT1 VDD_3 VSS_3 PB9 PB8 BOOT0 PB7 PB6 PB5 PB4 PB3 PA15 PA14 VDD_2 VSS_2 PA13 PA12 PA11 PA10 PA9 PA8 PB15 PB14 PB13 PB12 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 3V GND PB9 PB8 BOOT0 PB7 PB6 PB5 PB4 PB3 PA15 PA14 3V GND TXD RXD PA13 PA12 PA11 PA10 PA9 PA8 PB15 PB14 PB13 PB12 GND GND GND C1 电容 47uF C3 电容 47uF C4 电容 100pF P1 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 SBAT3V PC13 OSC321 OSC322 OSC1 OSC2 NRST PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 PA8 PA9 PA10 PA11 PA12 GND 3V 5V S3V GND S3V S5V 1 2 3 U1 GND VOUT VIN VOUT 4 S3V AMS1117-3V 稳压芯片 ASPK S3V ASPL GND 1 2 3 4 U2 P5.4 VCC P5.5 GND P3.3 P3.2 P3.1 P3.0 8 7 6 5 JS BOOT1 BOOT0 TXD STC15W201S_8PIN ASP控制芯片 P2 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 BOOT0 PB15 PB14 PB13 PB12 PB11 PB10 PB9 PB8 PB7 PB6 PB5 PB4 PB3 PB2 PB1 PB0 PA15 PA14 PA13 GND 3V 5V S5V TX2 OSC321 晶振 32.768KHz OSC322 ASPK GND PA0 GND PA1 GND OSC1 K1 K2 K3 微动开关按键 微动开关按键 微动开关按键 OSC2 TX1 晶振 8MHz 排针 排针 S3V 3V S5V 1 2 3 4 J1 + 2 3 4 8 7 6 5 - 7 6 5 继电器 1 S5V 5V E 3V R8 JS B VT2 PNP三极管 电阻 5.1K S8550 C7 电容 100pF GND 3V GND C8 电容 100pF C GND 2 10K R7 电阻 NRST GND C9 电容 100pF 洋桃1号核心板 YT32C48A CH340版 Number 3V Title Size A4 Date: File: 2019/8/12 Sheet of E:\A0洋桃电子\..\YT32C48A_Sheet1.SchDocDrawn By: 3 4 GND OSC2 OSC1 C5 电容 20pF C6 电容 20pF Revision PCB1 A B C D