Espressif Systems, introduced a new variant of ESP32 family called ESP32-PICO-D4, with a remarkably compact 7x7mm system-in-package (SIP) configurations. It comes with a ESP32 dual core processor, a 4MB SPI flash expandable up to 16MB, including a crystal oscillator and few other passive components, this package make it extremely suitable for wearables and many other space-constrained applications.
ESP32-PICO Schematics:
Specifications:
• SoC – ESP32 with two Tensilica LX6 cores, 448 KB ROM, 520 KB SRAM (inc. 8KB RTC memory), 1kbit eFuse
• On-module Flash – 4MB SPI flash
• Connectivity
◦WiFi – 802.11 b/g/n/e/i (802.11n up to 150 Mbps)
◦Bluetooth – Bluetooth V4.2 BR/EDR and BLE specification; ; class-1, class-2 and class-3 transmitter; Audio: CVSD & SBC
• SIP Interfaces
◦ SD card, UART, SPI, SDIO, LED PWM, Motor PWM, I2S, I2C, IR
◦ GPIO, capacitive touch sensor, ADC, DAC, LNA pre-amplifier
• Sensors – On-chip Hall sensor & temperature sensor
• Clock – On-module 40 MHz crystal
• Power supply – 2.3 ~ 3.6V
• Operating current – Average: 80 mA
• Temperature range – -40°C ~ 85°C
• Package dimensions – 7.0±0.1 mm x 7.0±0.1 mm x 0.94±0.1 mm
This SiP is particularly suited for any space-limited or battery-operated applications, such as wearable electronics, medical equipment, sensor and other Internet of Things products. There are very little information available about ESP32-PICO-D4, eagerly waiting for an hands on experience of the same.
