Espressif has recently released one wafer-level change on ESP32 Series of

products (ECO V3). Below are the main design changes in ECO V3 Series of

chips:

1. PSRAM Cache Bug Fix: Fixed “When the CPU accesses the external SRAM

in a certain sequence, read & write errors can occur”.

2. Fixed “When each CPU reads certain different address spaces

simultaneously, a read error can occur.”

3. Optimized 32.768 KHz crystal oscillator stability, the issue was reported by

the client that there is a low probability that under ECO V1 hardware, the

32.768 KHz crystal oscillator couldn’t start properly.

4. Fixed Fault injection issues regarding secure boot and flash encryption are

fixed.

5. Improvement: Changed the minimum baud rate supported by the CAN

module from 25 kHz to 12.5 kHz.

FEATURES

• ESP32 Dual-core low power main controller, 10uA power consumption

• WiFi+Bluetooth 4.0 Dual-mode Module

• GDI Display Port, easy to connect

• Onboard Charging Circuit and PH2.0 lithium Battery Interface

SPECIFICATION

• Operating Voltage: 3.3V

• Input Voltage: 3.3V~5.5V

• Support Low-Power: 2mA

• Max Discharge Current: 600mA@3.3V LDO

• Max Charge Current: 500mA

• Support USB Charging

• Processor: Tensilica LX6 dual-core processor (One for high-speed

connection; one for independent application development)

• Main Frequency: 240MHz

• SRAM: 520KB

• Flash: 4MB

• Wi-Fi Standard: FCC/CE/TELEC/KCC