STMicroelectronics AN1635 ST7 Customer ROM Code Release Information

About this manual

This document details the changes applied to customer executable files in Motorola .s19 format when they are processed by STMicroelectronics' proprietary automation tool, NEWGET. The note lists specific modifications such as the removal of the first line, sorting software by memory address, and filling unused memory with "FF" to prepare the code for manufacturing and testing.

The document provides a visual example of the file structure and compares original code listings with those reformatted by NEWGET. It also includes instructions on how to check the ROM content using the STVP7 programming software and the EPB board, noting that option bytes cannot be read from ROM MCUs.

What's inside

• Introduction
• List of Changes
• .S19 File Structure
• Example
• Checking ROM Content

Frequently asked questions

What format is the file sent to ST for mask programming?

Customers send their executable file to ST in Motorola .s19 format.

What tool does ST use to reformat the customer file?

ST uses a proprietary automation tool called NEWGET to reformat the file.

Can option bytes be read from an ST7 ROM MCU?

No, option bytes cannot be read because they are coded in hardware, not programmed in a parallel memory page.