Item specifics
Description
ESP32-PICO-D4 Product Overview
The ESP32-PICO-D4 is a highly integrated System-in-Package (SiP) module from Espressif Systems, seamlessly integrating a dual-core Xtensa® 32-bit LX6 processor, 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. Based on the ESP32 chip and manufactured on TSMC's 40nm ultra-low-power process, the ESP32-PICO-D4 simplifies complex RF design to the extreme — it requires no external components to function, significantly reducing supply chain complexity and improving management efficiency.
ESP32-PICO-D4 Key Features
The ESP32-PICO-D4 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.
The ESP32-PICO-D4 supports 2.4GHz Wi-Fi (802.11b/g/n, up to 150Mbps) and Bluetooth v4.2 BR/EDR + Bluetooth LE. It provides up to 34 GPIO pins, with 5 strapping pins and 6 pins connected to the in-package flash.
The ESP32-PICO-D4 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 2.7V ~ 3.6V, and temperature range is -40℃ ~ +85℃. The module measures just 7.0×7.0×0.94mm. It also supports AES, SHA, RSA hardware accelerators and a True Random Number Generator (RNG).
ESP32-PICO-D4 Applications
With its ultra-compact size, high integration, and low-power consumption, the ESP32-PICO-D4 is especially suited for space-constrained or battery-powered devices:
Wearable Electronics: Smartwatches, bands, fitness trackers, AR/VR headsets
Medical Devices: Portable monitors, health trackers, smart thermometers, continuous glucose monitors (CGM)
Sensor Nodes & IoT: Environmental monitoring, smart sensors, asset trackers, industrial sensing
Smart Home & Consumer Electronics: Smart plugs, smart lighting, remote controls, voice assistant front-end modules
Education & Prototyping: Space-constrained Arduino projects, miniature wireless modules
ESP32-PICO-D4 Advantages and Highlights
The core advantage of the ESP32-PICO-D4 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.
In terms of performance, the ESP32-PICO-D4's dual-core LX6 processor at 240MHz provides ample computing power. The 4MB in-package Flash offers generous storage for code and data. Support for dual-mode Bluetooth (Classic + BLE) and 802.11 b/g/n Wi-Fi ensures broad wireless compatibility. The -40℃ ~ +85℃ industrial temperature range makes it suitable for diverse environments.
Moreover, because the ESP32-PICO-D4 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, the ESP32-PICO-D4 is an ideal solution.
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FAQs:
Q What is the ESP32-PICO-D4 chip?
A ESP32-PICO-D4 is a System-in-Package (SiP) module from Espressif that integrates the ESP32 chip, 4MB Flash, and passive components into a compact 7x7mm package.
Q What wireless protocols does it support?
A ESP32-PICO-D4 supports IEEE 802.11 b/g/n Wi-Fi and Bluetooth v4.2 BR/EDR plus BLE standards.
Q What is the processor and frequency?
A ESP32-PICO-D4 features a dual-core Xtensa 32-bit LX6 processor operating at up to 240 MHz.
Q What is the memory capacity?
A ESP32-PICO-D4 includes 4MB of Flash, 520 KB SRAM, 448 KB ROM, and 16 KB RTC SRAM.
Q What is the package type and size?
A ESP32-PICO-D4 uses a 48-pin QFN package measuring 7.0 mm x 7.0 mm.
Q What peripherals does it support?
A ESP32-PICO-D4 offers up to 34 GPIOs and interfaces such as SPI, I2C, UART, I2S, ADC, DAC, PWM, and touch sensors.
Q What is the operating voltage range?
A The operating voltage of ESP32-PICO-D4 is between 3.0V and 3.6V.
Q What is the operating temperature range?
A The recommended operating temperature range for ESP32-PICO-D4 is from -40°C to +85°C.
Q How does it differ from ESP32-PICO-V3?
A ESP32-PICO-D4 integrates 4MB Flash and an older chip; the V3 series uses newer silicon, and the V3-02 variant upgrades to 8MB Flash and adds 2MB PSRAM.
Q What are its typical uses?
A ESP32-PICO-D4 is compatible with Arduino IDE and ESP-IDF, and is used in smart homes, wearables, sensors, and medical devices.