The RP2350B microcontroller from Raspberry Pi offers significant enhancements over RP2040, whilst continuing to provide their signature values of high-performance, low-cost, accessible computing, distilled into an extraordinary microcontroller. The Raspberry Pi RP2350B is a variant of the RP2350-family of microcontrollers from Raspberry Pi. This RP2350B variant comes in a QFN-80 (10x10mm) package along with 48 GPIO and 8 analogue inputs. It has no internal flash. Updated version! We're now stocking the latest A4 stepping, which has addressed a number of errata on the previous A2 version. Read more about the update here. The unique dual-core, dual-architecture capability of RP2350 provides a pair of industry-standard Arm Cortex-M33 cores with hardware single-precision floating point and DSP instructions @150MHz, and a pair of open-hardware Hazard3 RISC-V cores, selectable in software or by programming the on-chip OTP memory. The RP2350B has a comprehensive security architecture, built around Arm TrustZone for Cortex-M, along with a second-generation PIO subsystem that provides flexible interfacing with no CPU overhead. Sold in a pack of five. RP2350 Device Family Comparison Product Package Internal flash GPIO Analogue inputs RP2350A QFN-60 None 30 4 RP2350B QFN-80 None 48 8 RP2354A QFN-60 2 MB 30 4 RP2354B QFN-80 2 MB 48 8 RP2354A and RP2354B feature 2MB of internal flash. In all other respects, including pinout, they are identical to their flashless counterparts RP2350A and RP2350B. They use the same QFN-60 (RP2354A) and QFN-80 (RP2354B) packages. Important RP2350 Design Guidelines * Please read and follow the RP235x design guide * Please refer to the datasheet, including errata and our reference design in KiCAD format * Please use the 12 MHz Abracon ABM8-272-T3 crystal oscillator * If using the on-chip SMPS, please use the custom polarised inductor from Abracon (AOTA-B201610S3R3-101-T) and orient it according to the instructions in the design guide Specifications * RP2350B: * 48 GPIO * 10x10 QFN80 * No Internal Flash * 8x Analogue inputs * A4 Stepping * Dual Arm Cortex-M33 or dual Hazard3 RISC-V processors @ 150MHz * 520 KB on-chip SRAM * Robust and fully documented security features: * ARM TrustZone for Cortex-M * Optional boot signing, enforced by on-chip mask ROM, with key fingerprint in OTP * Protected OTP storage for optional boot decryption key * Global bus filtering based on Arm or RISC-V security/privilege levels * Peripherals, GPIOs, and DMA channels individually assignable to security domains * Hardware mitigations for fault injection attacks * Hardware SHA-256 accelerator * 2 × UART * 2 × SPI controllers * 2 × I2C controllers * 24 × PWM channels * 4/8 x ADC channels * 1 × USB 1.1 controller and PHY, with host and device support * 12 × PIO state machines * Software-compatible with RP2040 * Open source C/C++ SDK, MicroPython support * RP2350 will remain in production until at least January 2045 Resources * Datasheet * Hardware design with RP2350 * RP2350 product brief * Minimal RP2350A and B reference design in KiCAD * Product number: Raspberry Pi SC1510 Package Contents * 5x RP2350B microcontrollers (in tape, cut from reel) https://elecena.pl/product/28032513/raspberry-pi-rp2350b-microcontroller 2025-03-17 https://elecena.pl/product/28032513/raspberry-pi-rp2350b-microcontroller 2025-11-28 https://elecena.pl/product/28032513/raspberry-pi-rp2350b-microcontroller 2025-11-29 https://elecena.pl/product/28032513/raspberry-pi-rp2350b-microcontroller 2026-02-04 https://elecena.pl/product/28032513/raspberry-pi-rp2350b-microcontroller 2026-03-04