ESP8266 Wifi Module ESP-14
Power consumption

The following data is based on a 3.3V power supply, ambient temperature 25 ° measured.
[1] All measurements were performed at the antenna interface.
[2] all transmit data based on a 90% duty cycle, continuous transmission mode at measured.
Mode Min Max Unit usual

• Transfer 802.11b, CCK 1Mbps, Pout = + 19.5dBm 215 mA
• Transfer 802.11b, CCK 11Mbps, Pout = + 18.5dBm 197 mA
• Transfer 802.11g, OFDM54 Mbps, Pout = + 16dBm 145 mA
• Transfer 802.11n, MCS7, Pout = + 14dBm 135 mA
• Receiving 802.11b, packet length of 1024 bytes, -80dBm 100 mA
• Receiving 802.11g, packet length of 1024 bytes, -70dBm 100 mA
• Receiving 802.11n, packet length of 1024 bytes, -65dBm 102 mA
• System Standby mode 70 mA
• 0.5 μA shutdown

RF specs

The following data is at room temperature, the measured voltage is 3.3V.
Description Min Max Unit usual

• 2412 2484 MHz input frequency
• Input resistance 50 Ω
• -10 DB input reflection
• Under 72.2Mbps, PA output power 14 15 16 dBm
• 802.11b mode, PA output power 17.5 18.5 19.5 dBm
• Sensitivity
• CCK 1Mbps -98 dBm
• CCK 11Mbps -91 dBm
• 6Mbps (1 / 2BPSK) -93 dBm
• 54Mbps (3/4 64-QAM) -75 dBm
• HT20, MCS7 (65Mbps, 72.2Mbps) -71 dBm
• Adjacent suppression
• OFDM, 6Mbps 37 dB
• OFDM, 54Mbps 21 dB
• HT20, MCS0 37 dB
• HT20, MCS7 20 dB

Note:   1) 72.2Mbps under 802.11n mode, MCS = 7, GI = 200uS when measured;   2) 802.11b mode output power up to + 19.5dBm of;

Pin No. Name Description

1. M PC5 STM8 PC5 port

2. M_PC6 STM8 PC6 port

3. M_PC7 STM8 PC7 mouth

4. GND GND

5. M_PD3 STM8 PD3 port

6. M_PD4 STM8 PD4 port

7. M_NRST STM8 NRST port

8. GND common ground

9. M_PD2 STM8 PD2 port

10. M_PD5 STM8 PD5 port

11. M_PD6 STM8 PD6 port

12. M_PA1 STM8 PA1 port or crystal input port

13. M_PA2 STM8 PA2 port or oscillator output

14. E_GPIO0 ESP8266 GPIO0 port:

1) Default WiFi Status: WiFi working status indicator control signal;

2) Operating mode selection: Pull: Flash Boot, operating modes; pulldown: UART Download, download mode;

15. M_VCAP STM8 VCAP port

16. M_VDD STM8 power supply pin

17. E_VDD ESP8266 power supply pin

18. M_PA3 STM8 PA3 port

19. M_PB5 STM8 PB5 port

20. M_PB4 STM8 PB4 port

21. M_PC3 STM8 PC3 port

22. M_PC4 STM8 PC4 port