{"id":1010,"date":"2025-04-25T21:16:36","date_gmt":"2025-04-25T13:16:36","guid":{"rendered":"https:\/\/www.flywing-tech.com\/blog\/raspberry-pi-releases-its-second-microcontroller\/"},"modified":"2025-04-29T12:33:44","modified_gmt":"2025-04-29T04:33:44","slug":"raspberry-pi-releases-its-second-microcontroller","status":"publish","type":"post","link":"https:\/\/www.flywing-tech.com\/blog\/raspberry-pi-releases-its-second-microcontroller\/","title":{"rendered":"What Makes Raspberry Pi\u2019s Second Microcontroller RP2350 Revolutionary?"},"content":{"rendered":"<div class=\"fsc_text\"><p class=\"ds-markdown-paragraph\">Raspberry Pi\u2019s second microcontroller, the\u00a0<strong>RP2350<\/strong>, revolutionizes embedded systems with its hybrid Arm\/RISC-V architecture, 520KB SRAM, and enhanced security features like TrustZone and SHA-256 acceleration. Priced at $5, it powers the\u00a0<strong>Pico 2<\/strong>, offering 150MHz Cortex-M33 cores, 12 PIO state machines, and dual-ISA flexibility. This upgrade addresses IoT and robotics demands for high performance, low latency, and energy efficiency .<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\r\n<div class=\"ez-toc-title-container\">\r\n<h2 class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/h2>\r\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #023a85;color:#023a85\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #023a85;color:#023a85\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\r\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.flywing-tech.com\/blog\/raspberry-pi-releases-its-second-microcontroller\/#how_does_the_rp2350_differ_from_its_predecessor_the_rp2040\" >How Does the RP2350 Differ from Its Predecessor, the RP2040?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.flywing-tech.com\/blog\/raspberry-pi-releases-its-second-microcontroller\/#why_did_raspberry_pi_integrate_risc-v_with_arm_in_the_rp2350\" >Why Did Raspberry Pi Integrate RISC-V with Arm in the RP2350?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.flywing-tech.com\/blog\/raspberry-pi-releases-its-second-microcontroller\/#what_are_the_key_applications_for_the_rp2350\" >What Are the Key Applications for the RP2350?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.flywing-tech.com\/blog\/raspberry-pi-releases-its-second-microcontroller\/#buying_tips\" >Buying Tips<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.flywing-tech.com\/blog\/raspberry-pi-releases-its-second-microcontroller\/#electronic_components_expert_views\" >Electronic Components Expert Views<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.flywing-tech.com\/blog\/raspberry-pi-releases-its-second-microcontroller\/#faq\" >FAQ<\/a><\/li><\/ul><\/nav><\/div>\r\n<h2><span class=\"ez-toc-section\" id=\"how_does_the_rp2350_differ_from_its_predecessor_the_rp2040\"><\/span>How Does the RP2350 Differ from Its Predecessor, the RP2040?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"ds-markdown-paragraph\">The RP2350 eclipses the RP2040 with:<\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Dual Cortex-M33 cores<\/strong>\u00a0(150MHz vs. RP2040\u2019s 133MHz M0+).<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>520KB SRAM<\/strong>\u00a0(double RP2040\u2019s 264KB).<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>RISC-V Hazard3 cores<\/strong>\u00a0for open-source flexibility.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Security enhancements<\/strong>: TrustZone, OTP memory, and fault detection.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>12 PIO state machines<\/strong> (vs. 8 in RP2040) for peripheral control .<\/p>\n<\/li>\n<\/ul>\n<p class=\"ds-markdown-paragraph\">Chart:<br \/>\n<strong>RP2040 vs. RP2350 Comparison<\/strong><\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\">Clock Speed: 133MHz \u2192 150MHz<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\">Cores: 2x M0+ \u2192 2x M33 + 2x RISC-V<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\">SRAM: 264KB \u2192 520KB<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\">PIO Machines: 8 \u2192 12<\/p>\n<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"why_did_raspberry_pi_integrate_risc-v_with_arm_in_the_rp2350\"><\/span>Why Did Raspberry Pi Integrate RISC-V with Arm in the RP2350?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"ds-markdown-paragraph\">The RP2350\u2019s dual-ISA design allows developers to\u00a0<strong>select Arm or RISC-V cores at boot<\/strong>, optimizing for compatibility (Arm) or open-source customization (RISC-V). Hazard3\u2019s RV32I support enables lightweight, deterministic tasks, while Cortex-M33 handles secure, high-performance workloads. This hybrid approach future-proofs designs for diverse firmware needs.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"what_are_the_key_applications_for_the_rp2350\"><\/span>What Are the Key Applications for the RP2350?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"ds-markdown-paragraph\">The RP2350 excels in:<\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Robotics<\/strong>: Waveshare\u2019s DDSM Driver HAT (B) leverages similar MCUs for precision motor control .<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>IoT<\/strong>: TrustZone secures edge devices, while 520KB SRAM handles data-intensive tasks.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Embedded prototyping<\/strong>: Pico 2\u2019s 26 GPIO pins and USB 1.1 support rapid iteration .<\/p>\n<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"buying_tips\"><\/span>Buying Tips<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"ds-markdown-paragraph\">For RP2350-based projects:<\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Pico 2 boards<\/strong> ($5) are the easiest entry point\u00a0.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>RP2350 ICs<\/strong>\u00a0cost\u00a0<span class=\"katex\"><span class=\"katex-mathml\">0.80\u2013<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">0.80\u2013<\/span><\/span><\/span><\/span>1.10 in bulk, ideal for custom designs .<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\">Verify\u00a0<strong>TrustZone compliance<\/strong>\u00a0for security-critical applications.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Fly-Wing Technology (HK) Co., Limited<\/strong>\u00a0offers competitive pricing on Raspberry Pi components, including legacy RP2040 stock for transitional projects.<\/p>\n<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"electronic_components_expert_views\"><\/span>Electronic Components Expert Views<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"ds-markdown-paragraph\"><em>\u201cThe RP2350\u2019s hybrid architecture bridges Arm\u2019s ecosystem and RISC-V\u2019s flexibility. For robotics, its PIO upgrades enable real-time servo control, while TrustZone meets industrial security standards. However, developers must weigh cost\u2014RP2040 remains viable for simpler tasks.\u201d<\/em><\/p>\n<h2><span class=\"ez-toc-section\" id=\"faq\"><\/span>FAQ<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"ds-markdown-paragraph\"><strong>Q: Can the RP2350 replace the RP2040 in existing designs?<\/strong><br \/>\nA: Yes, but pin compatibility varies. Pico 2 maintains form-factor alignment, easing migration .<\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Q: Does the RP2350 support wireless connectivity?<\/strong><br \/>\nA: No\u2014pair it with ESP32-based HATs (e.g., Waveshare\u2019s DDSM Driver) for WiFi\/BT .<\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Q: When will RP2350 stock be widely available?<\/strong><br \/>\nA: Raspberry Pi guarantees Pico 2 production until 2040, ensuring long-term supply .<\/p>\n<p style=\"text-align: start;\"><strong>Raspberry Pi has unveiled the second generation of its in-house microcontroller along with a new $5 Raspberry Pi Pico 2 board.<\/strong><\/p>\n<p><span style=\"color: #000000; background-color: #ffffff;\">In 2021, the Raspberry Pi organization introduced a microcontroller-scale product, the Raspberry Pi Pico, as its first endeavor outside of the original Raspberry Pi line. Now, in August 2024, the group has delivered the faster and more capable <\/span><span style=\"color: #ff7a45;\">RP2350 microcontroller and the Raspberry Pi Pico 2<\/span><span style=\"color: #000000; background-color: #ffffff;\"> microcontroller board. <\/span><\/p>\n<p><span style=\"color: #000000; background-color: #ffffff;\"> \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 <\/span><img decoding=\"async\" style=\"width: 50%;\" src=\"https:\/\/file.flywing-tech.com\/res\/article\/2024091811443244322be2864e5dc8c6fcda8e59e3f60873e6c47fa.png\" alt=\"\" data-href=\"\" \/><\/p>\n<p style=\"text-align: center;\"><em>Raspberry Pi Pico 2 microcontroller board. Image used courtesy of <\/em><span style=\"color: #ff7a45;\"><em>Raspberry Pi<\/em><\/span><\/p>\n<h5 style=\"text-align: center;\"><\/h5>\n<p style=\"text-align: start;\"><strong>Raspberry Pi Pico Made a Name for Itself<\/strong><\/p>\n<p style=\"text-align: start;\">The Pico series differs from the original Raspberry Pi in that the originals are systems built around CPU-class system-on-chip (SoC) processors. They are intended for use with an operating system like Linux. While the peripherals and GPIO are directly accessible, the unit is architected more like a standalone computer than a microcontroller.<\/p>\n<p style=\"text-align: start;\">The Pico series is built with a microcontroller developed in-house based on simpler Arm Cortex-M or RISC-V MCU processing cores. The Pico will generally be used in \u201cbare metal\u201d form\u2014that is, without an operating system\u2014and is suitable for real-time control and operation of sensors, motor drivers, and other small system products.<\/p>\n<p style=\"text-align: start;\"><strong>The RP2350 MCU Upgrades Speed, Memory, and Security<\/strong><\/p>\n<p style=\"text-align: start;\">Amid the original Pico&#8217;s popularity and success, the Raspberry Pi Foundation received feedback from users and targeted several areas for improvement. The <span style=\"color: #ff7a45;\">RP2040<\/span>, the original Raspberry Pi microcontroller, came with two 32-bit Arm Cortex-M0+ cores running at 133 MHz, a 264 kB on-chip SRAM, and a healthy supply of I\/Os.<\/p>\n<p style=\"text-align: start;\">The new <span style=\"color: #ff7a45;\">RP2350<\/span> (datasheet linked) improves on the 2040 with faster and more powerful dual Cortex-M33 cores running at 150 MHz with floating point and DSP support. It has double the SRAM, with 520 kB on-chip, 2-MB internal Flash, up to 48 GPIOs, and up to eight analog inputs. Versions of the chip without internal Flash are also available.<\/p>\n<p style=\"text-align: start;\">\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0<img decoding=\"async\" style=\"width: 50%;\" src=\"https:\/\/file.flywing-tech.com\/res\/article\/20240918114504454e38650bb8ad1fca2079f34c558298e87af985.png\" alt=\"\" data-href=\"\" \/><\/p>\n<p style=\"text-align: center;\"><em>Diagram of the RP2350. Image used courtesy of <\/em><span style=\"color: #ff7a45;\"><em>Raspberry Pi<\/em><\/span><\/p>\n<h5 style=\"text-align: center;\"><\/h5>\n<p style=\"text-align: start;\">\n<p style=\"text-align: start;\">The new MCU adds hardware security as a response to the threat environment now common even in the MCU world. Security includes support for signed boot, 8 kB of one-time-programmable (OTP) memory, SHA-256 cryptographic hash function acceleration, and a hardware true random number generator (TRNG).<\/p>\n<p style=\"text-align: start;\"><strong>Changeable Cores at Boot-Time<\/strong><\/p>\n<p style=\"text-align: start;\">A fascinating aspect of the RP2350 is its ability to change CPU cores at boot time. As shipped, it is powered by a pair of Arm Cortex-M33 cores. The chip can be switched at boot time to replace the Arm cores with a pair of<span style=\"color: #ff7a45;\"> Hazard3 RISC-V cores<\/span>. It can be switched manually, or it can auto-switch if it detects RISC-V code ready to execute.<\/p>\n<p style=\"text-align: start;\">\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0<img decoding=\"async\" style=\"width: 50%;\" src=\"https:\/\/file.flywing-tech.com\/res\/article\/2024091811453245325581c6495e9a87c07d7f61099e53027cc8951.png\" alt=\"\" data-href=\"\" \/><\/p>\n<p style=\"text-align: center;\"><em>Switchable between RISC-V and Arm Cortex. Image used courtesy of <\/em><span style=\"color: #ff7a45;\"><em>Raspberry Pi<\/em><\/span><\/p>\n<h5 style=\"text-align: center;\"><\/h5>\n<p style=\"text-align: start;\">\n<p style=\"text-align: start;\">Most of the chip features, with the exception of some security features and the double-precision floating-point accelerator, are available in RISC-V mode.<\/p>\n<p style=\"text-align: start;\"><strong>Deterministic Real-Time Performance<\/strong><\/p>\n<p style=\"text-align: start;\">Raspberry Pi engineers designed the MCU in the Pico and Pico 2 with extensive MCU usage experience. As such, it has several features inspired by real-world MCU problems, one of the most prominent being real-time capabilities. Determinism in real-time operations is often a challenge in complex MCU employment. The original RP2040 introduced a set of programmable I\/O (PIO) state machines to improve real-time response.<\/p>\n<p style=\"text-align: start;\">The new 2350 has increased that to 12 upgraded FIFO-connected PIO state machines. State machines are often a convenient way to deal with peripheral inputs. However, keeping track of states from multiple inputs can be challenging in software, especially in real-time environments with hardware interrupt triggering. Having CPU-independent hardware state machines allows for absolute deterministic interfacing with external peripherals for more consistent real-time performance.<\/p>\n<p style=\"text-align: start;\"><strong>Software Support<\/strong><\/p>\n<p style=\"text-align: start;\">As with other Raspberry Pi products, the company&#8217;s design team maintained a low barrier to entry for the new MCU. Some Arm and RISC-V chips can be daunting at first. The MCU promotes simple usability, starting with a UF2 bootloader in ROM. After that, it supports multiple languages. The SDK has been released with C and C++ support. For an even lower barrier, it has an available image for Micro Python and Circuit Python available. There is also a team developing a Rust port for the platform.<\/p>\n<p style=\"text-align: start;\">\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0<img decoding=\"async\" style=\"width: 50%;\" src=\"https:\/\/file.flywing-tech.com\/res\/article\/2024091811460146196d7ec363857a1b08d6ff7daf6bb3f1714693.png\" alt=\"\" data-href=\"\" \/><\/p>\n<p style=\"text-align: center;\"><em>The Raspberry Pi Pico 2 is equipped for Google Pigweed development. Image used courtesy of <\/em><span style=\"color: #ff7a45;\"><em>Google Open Source<\/em><\/span><\/p>\n<h5 style=\"text-align: center;\"><\/h5>\n<p style=\"text-align: start;\">\n<p style=\"text-align: start;\">Google has worked with the Pico development team to build support for its Pigweed SDK. Pigweed is Google&#8217;s open-source embedded SDK designed to improve 32-bit MCU software development. It\u2019s built around a collection of embedded libraries, \u00a0real-time operating system (RTOS) abstractions, and remote procedure call (RPC) interfaces.<\/p>\n<p style=\"text-align: start;\"><strong>Extensive Third-Party Support<\/strong><\/p>\n<p style=\"text-align: start;\">At the time of writing, the basic Pico 2 board is available from Raspberry Pi for $5 USD. The RP2350 is also available built into boards from about a dozen third-party hardware manufacturers. Vendors like SparkFun, Piomoroni, Seeed Studio, and others have designed development and project boards of their own around the MCU.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Raspberry Pi\u2019s second microcontroller, the\u00a0RP2350, revolutionizes embedded systems with its hybrid Arm\/RISC-V architecture, 520KB SRAM, and enhanced security features like TrustZone and SHA-256 acceleration. Priced at $5, it powers the\u00a0Pico 2, offering 150MHz Cortex-M33 cores, 12 PIO state machines, and dual-ISA flexibility. This upgrade addresses IoT and robotics demands for high performance, low latency, and [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":1011,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1010","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-info"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\r\n<title>What Makes Raspberry Pi\u2019s Second Microcontroller RP2350 Revolutionary? - Fly-Wing<\/title>\r\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\r\n<link rel=\"canonical\" href=\"https:\/\/www.flywing-tech.com\/blog\/raspberry-pi-releases-its-second-microcontroller\/\" \/>\r\n<meta property=\"og:locale\" content=\"en_US\" \/>\r\n<meta property=\"og:type\" content=\"article\" \/>\r\n<meta property=\"og:title\" content=\"What Makes Raspberry Pi\u2019s Second Microcontroller RP2350 Revolutionary? - Fly-Wing\" \/>\r\n<meta property=\"og:description\" content=\"Raspberry Pi\u2019s second microcontroller, the\u00a0RP2350, revolutionizes embedded systems with its hybrid Arm\/RISC-V architecture, 520KB SRAM, and enhanced security features like TrustZone and SHA-256 acceleration. 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