Ebyte WIFI UART 2.4GHz 802.11b wifi Bluetooth 5.0 Dual ARM Core High Stability Module
[IC]：ARM® Cortex®-M3 Application Processor ARM® Cortex®-M0 Link Controller
[Frequency]：2.4GHz
[Power]：12dBm
[Wi-Fi]：802.11b
[Size]：16*13mm
[Introduction]：E103-W08 is a 2.4G-based WIFI re-serial module developed by Chengdu Ebyte, wiFI maximum transmit power of up to 10dBm, this module built-in ARM® Cortex®-M3 Application Processor and ARM ® Cortex ®-M Link Controller.
| Pin no | The pin name | Pin type | Pin usage |
|---|---|---|---|
| 1 | GND | - | Ground, connected to the power reference ground |
| 2 | RST_N | I | Reset pin, low active (built-in pull-up resistor 47k) |
| 3 | EN | I | OPL1000 chip enable pin, high level enable (built-in pull-up resistor 47k) |
| 4 | GPIO0 | I/O | Universal IO port (not currently in use) |
| 5 | GPIO1 | I/O | Universal IO port (not currently in use) |
| 6 | TXD | I/O | TTL serial output, connected to external RXD input pin (OPL1000 GPIO2) |
| 7 | RXD | I/O | TTL serial input, connected to external TXD output pin (OPL1000 GPIO3) |
| 8 | GPIO4 | I/O | Universal IO port (not currently in use) |
| 9 | GND | - | Ground, connected to the power reference ground |
| 10 | GPIO5 | I/O | The Socket connection indicates that the connection output is set to be high and the disconnect output is low |
| 11 | GPIO6 | I/O | Universal IO port (not yet used, recommended suspension) |
| 12 | GPIO23 | I/O | Link connection indicates that the wifi connection output is set to be high and the wifi output is disconnected at a low level |
| 13 | GPIO7 | I/O | Universal IO port (not currently in use) |
| 14 | GPIO8 | I/O | Universal IO port (not currently in use) |
| 15 | GPIO9 | I/O | Universal IO port (not currently in use) |
| 16 | GPIO10 | I/O | Universal IO port (not currently in use) |
| 17 | GND | - | Ground, connected to the power reference ground |
| 18 | VCC | - | The module power supply is being referenced, with voltages ranging from 2.5 V to 3.6 V |
| 19 | GPIO11 | I/O | Universal IO port (not currently in use) |
| 20 | GPIO18 | I/O | Restore the default parameters, which can only be changed within the first 1 second of power-up, and the low level is valid |
| 21 | GPIO19 | I/O | Universal IO port (not currently in use) |
| 22 | GPIO20 | I/O | Universal IO port (not currently in use) |
| 23 | GPIO21 | I/O | Universal IO port (not currently in use) |
| 24 | GPIO22 | I/O | Universal IO port (not currently in use) |