AI FAE PlatformN32H49x Development Kit User Guide
For developers using N32H497, N32H493, N32H492 series MCUs: this guide covers chip documentation, hardware evaluation boards, the SDK, development environment support packages, peripheral driver APIs, demos, and usage notes.
Online resources
- Nationstech N32H49x product pagePublic documents in the technical resource area
- Download CenterGeneral and newer tool packages
1. About This Guide
This guide is for embedded developers working with Nations Technologies N32H49x MCUs. It explains where to obtain chip documents and tools, how the SDK is organized, and how to use the peripheral driver APIs and example projects.
1.1 Applicable Series and Models
The N32H49x series consists of three sub-series, N32H492, N32H493, and N32H497, all built on a 32-bit Arm Cortex-M4F core with single-precision floating-point and DSP instructions, running at up to 240 MHz. The table below lists the sub-series and the part numbers given in the official selection guide.
| Sub-series | Max frequency | Part numbers in the selection guide |
|---|---|---|
| N32H492 | 240 MHz | N32H492REL7, N32H492RGB7, N32H492NEB7, N32H492NGB7, N32H492MEB7, N32H492MGB7, N32H492VEL7, N32H492VGL7, N32H492ZEL7, N32H492ZGL7 |
| N32H493 | 240 MHz | N32H493MEB7, N32H493MGB7, N32H493NEB7, N32H493NGB7, N32H493REB7, N32H493RGB7 |
| N32H497 | 240 MHz | N32H497NGB7, N32H497MGB7, N32H497RGB7, N32H497RGL7, N32H497VGL7, N32H497VGL7C, N32H497ZGL7 |
All three sub-series run at 240 MHz on a Cortex-M4F core; they differ in memory size, pin count, and package: N32H497 has the largest SRAM, and N32H493 supports an independent low-voltage I/O domain. Refer to the datasheet of each sub-series for the Flash, SRAM, GPIO count, package, and pin resources of a specific part.
The example projects target the full-featured board N32H497ZGL7_EVB V1.0. The board macros are switched between N32H497ZGL7_STB_V1_0 and N32H497ZGL7_EVB_V1_0 through DEMO_BOARD in bsp/inc/bsp_eval.h, with the latter as the default. The readme.txt in each example directory lists the parts that example supports.
1.2 SDK Version
This guide is based on the SDK Nsing.N32H49x_Library.1.2.0. The N32H49x Version History.txt in the SDK root records four versions: Nations.N32H49x_Library.0.1.0 is the initial release; 1.0.0 adds the V2 xSPI driver and examples, adds IAR projects, and optimizes the RCC, USBFS, RTC, FLASH, and SPI implementations; 1.1.0 optimizes comments and several driver functions, including the note that FLASH latency depends on SYSCLK and the usage notes for RCC prefetch and EXTPLL, adds the USART_FirstByteDelayFixSet function, and updates option byte USER2; 1.2.0 changes the bit operation that clears SU1H and AD1H in the RTC driver RTC_ConfigDayLightSaving() and corrects the FEMC macro FEMC_NCTRL_ECCPGS_MASK and the parameter initialization in FEMC_InitNorSram().
| Material | Version | Description |
|---|---|---|
| SDK | Nsing.N32H49x_Library.1.2.0 |
Basis of the SDK directory chapter and of the APIs and demos in chapter 5 |
| User manual | V1.1.0 (2026.7.20) | Peripheral registers and functions; main basis of the notes and troubleshooting sections |
| Datasheet | N32H492 / N32H493 / N32H497 series datasheets (V1.0.0) | Memory size, package, pins, and electrical characteristics of each part |
| Product brief | N32H497xG product brief (V1.0.0) | Series features and typical applications |
| Selection guide | Chip selection guide (2026.4) | Sub-series, part numbers, and packages |
| Hardware design guide | N32H49X series hardware design guide | Supply, decoupling, ESD protection, and minimum-system reference designs |
The user manual PDF on the website is V1.0.0, while the user manual text this guide is based on is V1.1.0 (2026.7.20); the versions differ, and the notes and troubleshooting sections here follow the local V1.1.0 text.
1.3 Scope
| Chapter | Content |
|---|---|
| Chapter 1 About This Guide | Applicable parts, SDK and document versions, where to obtain materials |
| Chapter 2 Product and Kit Overview | Core and peripheral overview; number of driver modules, public APIs, and examples in the SDK |
| Chapter 3 Documentation and Tool Navigation | Chip and development documents, evaluation boards, SDK and support packages, official website entries |
| Chapter 4 SDK Directory Structure | Top-level layout, firmware library, projects directory, structure of an example, development aids |
| Chapter 5 Peripherals and Examples | Related files, API reference, demo descriptions, and notes and troubleshooting for each peripheral and functional module |
This guide does not replace the datasheet or the user manual: electrical parameters, register definitions, and timing requirements are defined by the manuals.
1.4 Where to Obtain Materials
Chip documents, the SDK, development support packages, and tools are all available from the Nations Technologies website:
- N32H49x series product page: series introduction, typical applications, and the Technical Resources list
- N32H492 model page: main features and datasheet of N32H492
- N32H493 model page: main features and datasheet of N32H493
- N32H497 model page: main features and datasheet of N32H497
- Download center: search all public materials by resource type and keyword
Downloads require a member account login. Materials on the website are updated over time; use the version listed on the website when downloading.