Nuvoton NUC980 NuWriter User Manual

User manual for Nuvoton's NUC980 NuWriter programming tool, covering boot options, USB ISP, and image creation steps.

Brand: Nuvoton
Category: Other Electronics
Document type: User Manual
Language: English
Pages: 71
File format: PDF
File size: 4.1 MB
Published: 29 September, 2026
Updated: 29 September, 2026
MD5 checksum: 2F5D5B2AB0232C2BFACAD3C2DA1A305F
PDF: Nuvoton NUC980 NuWriter User Manual PDF

About this manual

The NuWriter is a programming tool for NUC980 series micro‑processors. It uses the chip’s USB ISP mode to transfer image files from a Windows PC to on‑board storage devices such as NAND Flash, SPI Flash, eMMC/SD, and SPI NAND Flash.

The manual describes how to configure power‑on settings via DIP switches, select boot sources, and perform various operation modes (NAND, SPI, eMMC/SD, USB ISP, Pack and Mass‑Production modes). It also provides source‑code information and revision history for developers.

What's inside

Overview
Boot from NAND
Boot from SPI
Boot from eMMC/SD
USB ISP
Install NuWriter Driver
Operation Steps
Image Type
Pack Mode
Mass Production Mode

Specifications

Supported storage devices	NAND Flash, SPI Flash, eMMC/SD, SPI NAND Flash
Boot source selection bits	00=USB, 01=SD/eMMC, 10=NAND, 11=SPI
QSPI0_CLK frequency options	30 MHz or 50 MHz
NAND Flash page size options	2 KB, 4 KB, 8 KB

Frequently asked questions

How do I select the boot source for the NUC980?

Set the corresponding DIP switch bits (SW2.1‑SW2.10) to 00 for USB, 01 for SD/eMMC, 10 for NAND, or 11 for SPI boot.

How can I change the QSPI0_CLK frequency?

Use DIP switch SW2.3: set to 0 for 30 MHz or 1 for 50 MHz.

What NAND Flash page sizes are supported?

The tool supports 2 KB, 4 KB, and 8 KB NAND Flash page sizes.

Which storage devices can the NuWriter program?

It can program NAND Flash, SPI Flash, eMMC/SD, and SPI NAND Flash on the NUC980 board.

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