AN2792 Datasheet, PDF (1/12 Pages) STMicroelectronics – STM8A easy programmer

AN2792
Application note
STM8A easy programmer
1
Introduction
This application note describes the easy programmer which is a low cost solution allowing
the content of the STM8A Flash program memory to be updated when the chip is already
soldered on the application board. The easy programmer works by calling the functions of
the bootloader, an IAP application embedded in the system memory of the device (the ROM
memory). Through the bootloader firmware, the device memory can be erased and
programmed using one of the standard communication interfaces present on the particular
device. The easy programmer interfaces the bootloader using a serial port (USART
protocol) with the application board for the upload.
Section 2 of this document gives a brief introduction to the STM8A bootloader. Section 3,
Section 4, and Section 5 describe the easy programmer procedure and its software and
hardware requirements.
For further information on the STM8A family features, pinout, electrical characteristics,
mechanical data and ordering information, please refer to the STM8A128 Kbyte and STM8A
32 Kbyte datasheets. For more details on the bootloader, please refer to the bootloader user
manual (UM0500). All documents are available on st.com.
This document, its associated firmware, and other such application notes are written to
accompany the STM8S firmware library which is available on st.com.
November 2008
Rev 1
1/12
www.st.com