Ebyte E104-BT54S, Руководство пользователя, Страница: 7 / 10

Chengdu Ebyte Electronic Technology Co., Ltd. E104-BT54 User manual
Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd. 6
11 PB14 I/O MCU GPIO, please refer to the chip user manual for details;
12 VDD S Power supply pin, 1.7-3.6V, read the chip user manual for details
13 GND S Ground wire, connected to the power reference ground;
14 RST I/O Module reset pin, built-in power-on reset circuit;
15 VDDA S 1.2 V analog ADC core, read the chip user manual for details
；
16 PB11 I/O
Module power supply is positive, voltage range: 1.8
～
3.6V DC (recommend
to add ceramic filter capacitor)
17 PB10 I/O Ground wire, connected to the power reference ground;
18 PB9 I/O
The backup power supply is positive, the voltage range: 1.55
～
3.6V DC
(recommend to add ceramic filter capacitors externally)
19 PB8 I/O
Analog power supply is positive, voltage range: 1.71
～
3.6V DC (recommend
to add ceramic filter capacitors externally)
20 PB7 I/O MCU GPIO, please refer to the chip user manual for details;
21 PB6 I/O MCU GPIO, please refer to the chip user manual for details;
22 PB5 I/O MCU GPIO, please refer to the chip user manual for details;
23 PB4 I/O MCU GPIO, please refer to the chip user manual for details;
24 GND S MCU GPIO, please refer to the chip user manual for details;
25 PB3 I/O MCU GPIO, please refer to the chip user manual for details;
26 PB2 I/O MCU GPIO, please refer to the chip user manual for details;
27 PB1 I/O MCU GPIO, please refer to the chip user manual for details;
28 PB0 I/O MCU GPIO, please refer to the chip user manual for details;
29 PA15 I/O MCU GPIO, please refer to the chip user manual for details;
30 PA14 I/O MCU GPIO, please refer to the chip user manual for details;
31 PA13 I/O MCU GPIO, please refer to the chip user manual for details;
32 PA12 I/O MCU GPIO, please refer to the chip user manual for details;
33 PA11 I/O MCU GPIO, please refer to the chip user manual for details;
34 PA10 I/O MCU GPIO, please refer to the chip user manual for details;
35 PA9/TXD I/O MCU GPIO, please refer to the chip user manual for details;
36 PA8/RXD I/O MCU GPIO, please refer to the chip user manual for details;
Note: For more chip information, please refer to the official information of "BLUENRG355MC".
4. Welding operation guidance
4.1 Reflow Soldering Temperature
Table 4-1 Reflow soldering temperature table
Profile Feature Curve feature Sn-Pb Assembly Pb-Free Assembly
Solder Paste Solder paste Sn63/Pb37 Sn96.5/Ag3/Cu0.5