EBYTE OEM/ODM E104-BT54S smallest size STMicroelectronics chip Low power consumption micro BLE RF Module
[Distance]：300m
[Chip]：BLUENRG355MC
[Frequency]：2.40~2.48GHz
[Bluetooth protocol]：BLE5.1 Communication
[size]：28*16*2.7mm
[Product weight]：1.8g±0.1g
[Introduction]：E104-BT54S is a BT5.1 SOC module designed based on based on STMicroelectronics chip.It has a variety of transmission methods, working in the 2.4GHz frequency band, TTL level output, and 3.3V IO port voltage.
Official Store
| Pin No. | Pin Name | Pin direction | Description |
|---|---|---|---|
| 1 | GND | S | Ground wire, connected to the power reference ground |
| 2 | PA0 | I/O | MCU GPIO, please refer to the chip user manual for details |
| 3 | PA1 | I/O | MCU GPIO, please refer to the chip user manual for details |
| 4 | PA2/SWDIO | I/O | MCU GPIO, please refer to the chip user manual for details |
| 5 | PA3/SWCLK | I/O | MCU GPIO, please refer to the chip user manual for details |
| 6 | PA4/LPUART TX | I/O | MCU GPIO, please refer to the chip user manual for details |
| 7 | PA5/LPUART RX | I/O | MCU GPIO, please refer to the chip user manual for details |
| 8 | PA6 | I/O | MCU GPIO, please refer to the chip user manual for details |
| 9 | PA7 | I/O | MCU GPIO, please refer to the chip user manual for details |
| 10 | PB15 | I/O | MCU GPIO, please refer to the chip user manual for details |
| 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 |