January 2012

Doc ID 17100 Rev 2

1/31

PM0068

Programming manual

STM32F10xxx XL-density

Flash programming

Introduction

This programming manual describes how to program the STM32F101xF/G and

STM32F103xF/G Flash memory of XL-density microcontrollers. For convenience, these will

be referred to as STM32F10xFG in the rest of this document unless otherwise specified.

The STM32F10xFG embedded Flash memory can be programmed using in-circuit

programming or in-application programming.

The in-circuit programming (ICP) method is used to update the entire contents of the

Flash memory, using the JTAG, SWD protocol or the boot loader to load the user application

into the microcontroller. ICP offers quick and efficient design iterations and eliminates

unnecessary package handling or socketing of devices.

In contrast to the ICP method, in-application programming (IAP) can use any

etc.) to download programming data into memory. IAP allows the user to re-program the

Flash memory while the application is running. Nevertheless, part of the application has to

have been previously programmed in the Flash memory using ICP.

The Flash interface implements instruction access and data access based on the AHB

protocol. It implements a prefetch buffer that speeds up CPU code execution. It also

implements the logic necessary to carry out Flash memory operations (Program/Erase).

Program/Erase operations can be performed over the whole product voltage range.

Read/Write protections and option bytes are also implemented.

www.st.com