Esp8266 Esp-01 Datasheet _best_ [ 4K ]

If you’ve ever dabbled in IoT or low-cost WiFi-enabled projects, you’ve almost certainly encountered the ESP8266 ESP-01 . It’s the little module that started a revolution. But before you plug it into a breadboard and fry it, let’s take a detailed walk through its official datasheet and extract everything that matters for your projects. 1. What Exactly is the ESP-01? The ESP-01 is a breakout board for the ESP8266EX chip. It’s not the chip itself, but a minimal module designed to make the chip usable for hobbyists.

| Mode | Current | |------|---------| | TX @ 0 dBm | ~120 mA | | TX @ +19.5 dBm | ~170 mA | | RX (WiFi on) | ~60-70 mA | | Modem-sleep | ~15 mA | | Light-sleep | ~1.5 mA | | Deep-sleep | ~10 µA (but ESP-01 has no deep-sleep pin broken out) | esp8266 esp-01 datasheet

| Mode | GPIO0 | GPIO2 | GPIO1 (TX) | |------|-------|-------|-------------| | | 0 | 1 | 1 | | Flash Boot (Normal Run) | 1 | 1 | 1 | | SDIO Boot | 0 | 1 | 0 | If you’ve ever dabbled in IoT or low-cost

| Parameter | Min | Typical | Max | |-----------|-----|---------|-----| | VCC | 3.0V | 3.3V | 3.6V | | Peak current | – | 300 mA | 500 mA | | Logic input HIGH | 0.75 × VCC | – | 3.6V | | Logic input LOW | – | – | 0.25 × VCC | It’s not the chip itself, but a minimal

┌─────────┐ TX │1 8│ VCC (3.3V) RX │2 7│ RST CH_PD │3 6│ GPIO0 GPIO2 │4 5│ GPIO1 (TX onboard LED) └─────────┘