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The BL602 is a relatively new SoC, so here is some more information taken from the producer's homepage (https://www.bouffalolab.com/bl602).

Wireless (Tier-1 RF Performance)

    Wi-Fi 802.11 b/g/n
    Bluetooth® Low Energy 5.0
    Wi-Fi Fast connection with BLE assistance
    Wi-Fi and BLE coexistence
    Wi-Fi Security WPS/WEP/WPA/WPA2/WPA3
    STA, SoftAP and sniffer modes
    Multi-Cloud connectivity
    2.4 GHz RF transceiver
    Integrated RF balun, PA/LNA
Microcontroller Subsystem

    32-bit RISC CPU with FPU
    L1 cache
    RTC timer up to One year
    Two 32b general purpose timers
    Four DMA channels
    Dynamic Frequency from 1MHz to 192MHz
    JTAG development support
    XIP QSPI flash support
Memory

    276KB SRAM
    128KB ROM
    1Kb eFuse
    Embedded Flash (Optional)
Security (Complete Security features)

    Secure boot
    Secure debug
    XIP QSPI On-The-Fly AES Decryption (OTFAD)
    AES 128/192/256
    SHA-1/224/256
    TRNG (True Random Number Generator)
    PKA (Public Key Accelerator)
Peripherals

    SDIO 2.0 slave (AP-Host)
    SPI master/slave
    Two UART
    I2C master/slave
    Five PWM channels
    10-bit general DAC
    12-bit general ADC
    Two general analog comparators
    PIR (Passive Infra-Red) detection
    IR remote HW accelerator
    Flexible 16 GPIOs (BL602) / 23 GPIOs (BL604)
Power Modes (Ultra-low Power modes)

    Off
    Hibernate
    Power Down Sleep (flexible)
    Active
Clock

    Support XTAL 24/26/32/38.4/40MHz
    Support XTAL 32/32.768KHz
    Internal RC 32KHz & 32MHz oscillator
    Internal System PLL
Package Type

    32 pin QFN (BL602)
    40 pin QFN (BL604)


Will it be a competitor to... Raspberry Pi? ESP32? STM32? Teensy?


It's a very similar niche to the ESP32.


I recently got a smart LED strip controller to put Tasmota on and found a BL602 instead of an ESP32. This chip has been a drop in replacement with the intention of lowering cost and potentially protecting against trade dispute chip issues with the US govt.


How fast are the ADCs?




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