WiFi Serial Transceiver Module with 4MB Flash

Product Description:

The ESP-01S offers several advantages over the ESP-01. The PCB layout has been revised for improved WiFi radio performance. It now features 4MB of Flash Memory, an upgrade from the previous 32Mbit.

Features: - Supports SDIO 2.0, SPI, and UART interfaces - 32-pin QFN package - Supports WiFi Direct (P2P) and soft-AP - Integrated TCP/IP protocol stack - Integrated RF switch, balun, LNA, power amplifier, and matching network - Integrated PLLs, regulators, DCXO, and power management units - Delivers up to +19.5dBm output power in 802.11b mode - Power down leakage current of less than 10uA - Integrated low-power 32-bit CPU that can be used as an application processor

Additional Features: - Supports SDIO 1.1/2.0, SPI, and UART - Supports STBC, 1×1 MIMO, and 2×1 MIMO - Supports A-MPDU & A-MSDU aggregation and 0.4ms guard interval - Integrated RF switch, balun, 24dBm PA, DCXO, and PMU - Integrated RISC processor, on-chip memory, and external memory interfaces - Integrated MAC/baseband processors - Supports Quality of Service management - I2S interface for high-fidelity audio applications - On-chip low-dropout linear regulators for all internal supplies - Proprietary spurious-free clock generation architecture - Integrated WEP, TKIP, AES, and WAPI engines

Specifications: - 802.11 b/g/n compliant - Wake up and transmit packets in less than 2ms - Standby power consumption of less than 1.0mW (DTIM3)

To program the ESP-01S, please select the "Generic ESP8266 Module" board in the Arduino IDE.

Connectivity with Arduino: - Arduino TX > ESP-01S TXD - Arduino RX > ESP-01S RXD - GND > GND - Arduino 3.3V > ESP-01S VCC and CHPD

(You can connect VCC and CHPD to the breadboard's positive rail, then connect the positive rail to the Arduino's 3.3V.)

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product information: