1 S5V GND 1 2 3 4 5 M1 Vcc D- D+ ID GND USB TXD S5V RXD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 U3 TXD DTR# RTS# VCCIO RXD RI# GND NC DSR# DCD# CTS# CBUS4 CBUS2 CBUS3 FT232RL 28 OSCO 27 OSCI 26 TEST 25 AGND 24 NC 23 CBUS0 22 CBUS1 21 GND 20 VCC 19 RESET# 18 GND 17 3V3OUT USBDM 16 15 USBDP S5V ASPL PB0 PB1 ASP LED LED1 LED LED2 LED R4 电阻 R5 电阻 R6 电阻 GND GND GND A B C D 2 3 3V R2 电阻 R3 电阻 B VT1 PNP E C PB5 BT1 SBAT3V GND BATTERY BP1 BUZZER R1 电阻 5R 3V S5V C2 S5V Cap 100pF GND S3V GND S3V SBAT3V PC13 OSC321 OSC322 OSC1 OSC2 NRST GND 3V PA0 PA1 BOOT1 GND 3V 1 2 3 4 5 6 7 8 9 10 11 12 PA2 13 PA3 14 PA4 15 PA5 16 PA6 17 PA7 18 PB0 PB1 19 20 PB2 21 PB10 22 PB11 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 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 4 U1 GND VOUT VIN 1 2 3 VOUT 4 S3V GND S3V S5V AMS1117-3V 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 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 GND GND GND C1 Cap 47uF C3 Cap 47uF C4 Cap 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 TX2 OSC321 OSC322 ASPK GND PA0 GND PA1 GND K1 K2 K3 XTAL_2PIN KEY_2PIN KEY_2PIN KEY_2PIN OSC1 TX1 OSC2 XTAL_2PIN Header 24 Header 24 S5V 1 2 3 4 J1 + 2 3 4 8 7 6 5 - 7 6 5 J-HFD4 S3V 3V S5V 5V JS R8 电阻 B 1 3V GND C7 Cap 100pF VT2 PNP E C GND 2 3V C8 Cap 100pF GND 3 3V Title Size A4 Date: File: R7 电阻 NRST GND C9 Cap 100pF YT32C48A V1.0F Number 2017/12/13 Sheet of E:\A0洋桃电子\..\YT32C48A_Sheet1.SchDocDrawn By: 4 GND C5 Cap 20pF C6 Cap 20pF Revision PCB1 A B C D