E101-C3MN4-XS Low power consumption and small size WiFi wireless module
[IP]：ESP32-C3
[Frequency]：2.4~2.5GHz
[Protocol]：IEEE802.11b/g/n
[Distance]：300m
[Interface Type]：UART I/O
[Features]：Universal Wi-Fi module, small size
[Product weight]：1.5±0.1g
[Introduction]：E101-C3MN4-XS is a general-purpose Wi-Fi module with a small size, rich peripheral interfaces, 4 MB embedded flash, and a RISC-V 32-bit single-core processor. It can be used in smart home, industrial automation, healthcare, consumer electronics and other fields.
| Name | Serial number | Type | Function |
|---|---|---|---|
| 1, 2, 11, 14, 36-53 | GND | P | Grounded |
| 3 | 3V3 | P | Powered by |
| 4, 7, 9, 10, 15, 17, 24, 25, 28, 29, 32-35 | NC | - | Empty pin |
| 5 | IO2 | I/O/T | GPIO2, ADC1_CH2, FSPIQ |
| 6 | IO3 | I/O/T | GPIO3, ADC1_CH3 |
| 8 | EN | I | High level: chip enable;low level: chip off;Be careful not to let the EN pin float. |
| 12 | IO0 | I/O/T | GPIO0, ADC1_CH0, XTAL_32K_P |
| 13 | IO1 | I/O/T | GPIO1, ADC1_CH1, XTAL_32K_N |
| 16 | IO10 | I/O/T | GPIO10, FSPICS0 |
| 18 | IO4 | I/O/T | GPIO4, ADC1_CH4, FSPIHD, MTMS |
| 19 | IO5 | I/O/T | GPIO5, ADC2_CH0, FSPIWP, MTDI |
| 20 | IO6 | I/O/T | GPIO6, FSPICLK, MTCK |
| 21 | IO7 | I/O/T | GPIO7, FSPID, MTDO |
| 22 | IO8 | I/O/T | GPIO8 |
| 23 | IO9 | I/O/T | GPIO9 |
| 26 | IO18 | I/O/T | GPIO18, USB_D |
| 27 | IO19 | I/O/T | GPIO19, USB_D+ |
| 30 | RXD0 | I/O/T | GPIO20, U0RXD |
| 31 | TXD0 | I/O/T | GPIO21, U0TXD |
| 1 P: power supply; I: input; O: output; T: can be set to high impedance. |