Raspberry Pi RP2040 - Dual Cortex M0+ MCU IC - B1

The chip is 40nm silicon in a 7 × 7 mm QFN-56 SMD package.
• Key features: [7]
◦ 133 MHz dual ARM Cortex-M0+ cores (overclockable to over 400 MHz[8])
▪ Each core has an integer divider peripheral, and two interpolators.
◦ 264 KB SRAM in six independent banks
◦ No internal Flash or EEPROM memory (after reset, the boot-loader loads firmware from either external flash memory or USB bus into internal SRAM)
◦ QSPI bus controller, supporting up to 16 MB of external Flash memory
◦ DMA controller
◦ AHB crossbar, fully-connected
◦ On-chip programmable LDO to generate core voltage
◦ 2 on-chip PLLs to generate USB and core clocks
◦ 30 GPIO pins, of which 4 can optionally be used as analog inputs
• Peripherals:
◦ 2 UARTs
◦ 2 SPI controllers
◦ 2 I²C controllers
◦ 16 PWM channels
◦ USB 1.1 controller and PHY, with host and device support
◦ 8 PIO state machines


Sources : https://en.wikipedia.org/wiki/RP2040