Espressif ESP32-PICO-V3 System-in-Package (SiP) Module Dual-Core 240MHz 4MB Flash QFN-48

ESP32-PICO-V3 Product Overview

The ESP32-PICO-V3 is a highly integrated System-in-Package (SiP) module from Espressif Systems, part of the ESP32-PICO series. Based on the ESP32 (ECO V3) chip, it seamlessly integrates an Xtensa® dual-core 32-bit LX6 microprocessor, Wi-Fi 802.11b/g/n, Bluetooth v4.2 BR/EDR and BLE, 4MB SPI Flash, and all critical peripheral components (crystal oscillator, filter capacitors, RF matching network) into a single QFN-48-EP (7×7mm) package. ESP32-PICO-V3 simplifies complex RF design to the extreme — ESP32-PICO-V3 requires only an antenna, LC matching circuit, decoupling capacitor, and an EN pull-up resistor to function.

ESP32-PICO-V3 Key Features

ESP32-PICO-V3 features an Xtensa® dual-core 32-bit LX6 microprocessor running at up to 240MHz. On-chip memory includes 448KB ROM, 520KB SRAM, and 16KB RTC SRAM. The package integrates 4MB SPI Flash for firmware and user data.

ESP32-PICO-V3 supports 2.4GHz Wi-Fi (802.11b/g/n, up to 150Mbps) and Bluetooth v4.2 BR/EDR + Bluetooth LE. ESP32-PICO-V3 provides up to 31 programmable GPIO pins, with 5 strapping pins, 2 pins connected to the in-package flash, and 6 input-only pins. Compared to the earlier ESP32-PICO-D4, ESP32-PICO-V3 adds an extra GPIO20 pin.

ESP32-PICO-V3 integrates a rich set of peripherals, including SPI, I2C, I2S, UART, ADC, DAC, touch sensors, SD/MMC host, Ethernet MAC, PWM, RMT, TWAI, and more. Operating voltage range is 3.0V ~ 3.6V, and temperature range is -40℃ ~ +85℃. ESP32-PICO-V3 measures just 7.0×7.0×0.94mm in a QFN-48-EP (7×7mm) package. ESP32-PICO-V3 also supports AES, SHA, RSA hardware accelerators and a True Random Number Generator (RNG).

ESP32-PICO-V3 Applications

With its ultra-compact size, high integration, and low-power consumption, ESP32-PICO-V3 is especially suited for space-constrained or battery-powered devices:

• Wearable Electronics: ESP32-PICO-V3 is used in smartwatches, bands, fitness trackers, AR/VR headsets

• Medical Devices: ESP32-PICO-V3 is applied in portable monitors, health trackers, smart thermometers, continuous glucose monitors (CGM)

• Sensor Nodes & IoT: ESP32-PICO-V3 is used in environmental monitoring, smart sensors, asset trackers, industrial sensing

• Smart Home & Consumer Electronics: ESP32-PICO-V3 is found in smart plugs, smart lighting, remote controls, voice assistant front-end modules

• Education & Prototyping: ESP32-PICO-V3 supports ESP32-PICO-V3-ZERO-DevKit projects, Arduino Zero-compatible development

ESP32-PICO-V3 Advantages

The core advantage of ESP32-PICO-V3 is its "ready-to-use" System-in-Package (SiP) design. By integrating the Espressif ESP32 chip, 4MB Flash, and all critical peripheral components into a single QFN-48 (7×7mm) package, this SiP solution significantly simplifies PCB layout, saves board space, reduces external component count, and improves system reliability. ESP32-PICO-V3 only requires an antenna, LC matching circuit, decoupling capacitor, and an EN pull-up resistor to function.

In terms of performance, ESP32-PICO-V3's dual-core LX6 processor at 240MHz provides ample computing power. The 4MB in-package Flash offers generous storage for code and data. ESP32-PICO-V3 supports dual-mode Bluetooth (Classic + BLE) and 802.11 b/g/n Wi-Fi ensuring broad wireless compatibility. The -40℃ ~ +85℃ industrial temperature range makes ESP32-PICO-V3 suitable for diverse environments.

Moreover, because ESP32-PICO-V3 integrates all peripheral components, developers are freed from complex RF design and external circuit debugging. This not only greatly simplifies the hardware design process but also effectively reduces supply chain complexity and improves management efficiency. For IoT products requiring miniaturization, rapid time-to-market, and high reliability, ESP32-PICO-V3 is an ideal solution.

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FAQs:

1. Question: What is the ESP32-PICO-V3?
   Answer: ESP32-PICO-V3 is a System-in-Package (SiP) from Espressif that integrates the ESP32 ECO V3 chip, 4MB Flash, and a 40MHz crystal oscillator into a single 7x7mm package for standalone operation .

2. Question: What is the core processor and frequency?
   Answer: ESP32-PICO-V3 features a dual-core Xtensa 32-bit LX6 processor running at up to 240 MHz .

3. Question: What memory is integrated inside the chip?
   Answer: ESP32-PICO-V3 package includes 4MB of SPI Flash. Internally, the chip contains 448 KB ROM, 520 KB SRAM, and 16 KB RTC SRAM .

4. Question: What wireless protocols does it support?
   Answer: ESP32-PICO-V3 supports 2.4 GHz Wi-Fi (802.11 b/g/n) and Bluetooth v4.2 BR/EDR/LE .

5. Question: What are the advantages over standard ESP32 chips?
   Answer: ESP32-PICO-V3 as a SiP offers high integration and compact size, reducing supply chain complexity. Additionally, ESP32-PICO-V3 introduces a dedicated GPIO20 pin compared to other variants .

6. Question: What is the operating voltage and temperature range?
   Answer: For ESP32-PICO-V3, the voltage range is 3.0V to 3.6V, and the operating temperature range is -40°C to +85°C .

7. Question: What applications is it suitable for?
   Answer: ESP32-PICO-V3 is ideal for smart home devices, industrial automation, medical equipment, and various IoT terminals requiring Wi-Fi connectivity .

8. Question: What package and dimensions does it use?
   Answer: ESP32-PICO-V3 utilizes a 48-pin TFQFN package with dimensions of 7.0 x 7.0 x 0.94 mm .

9. Question: How does it differ from the ESP32-PICO-V3-02?
   Answer: The primary difference is that ESP32-PICO-V3-02 upgrades Flash to 8MB and adds 2MB of PSRAM, whereas ESP32-PICO-V3 standard offers 4MB Flash only .

10. Question: What should be noted during board design?
    Answer: ESP32-PICO-V3 can be soldered directly. Note that the internal Flash control pins (DI, DO, HOLD, WP) are not exposed for security reasons .