May 2014

DocID026267 Rev 1

1/15

TN1176

Technical note

Migrating from STM32L15xx6/8/B to STM32L15xx6/8/B-A and from

STM32L100x6/8/B to STM32L100x6/8/B-A

Introduction

To ease the development of STM32 microcontroller applications, it is important to be able to

smoothly replace one microcontroller type with another from the same product family. The

purpose of this technical note is to help the users with the migration from an existing

STM32L15xx6/8/B device to an STM32L15xx6/8/B-A device and from an existing

STM32L100x6/8/B device to an STM32L100x6/8/B-A. This document includes the relevant

information for the users.

Prior to migrating an application, the users need to analyze the hardware migration, the

peripheral migration and the firmware migration. To best understand the information

included in this technical note, the user should be familiar with the STM32L1 microcontroller

family.

For additional information, please refer to the STM32L100xx, STM32L151xx, STM32L152xx

and STM32L162xx advanced ARM®-based 32-bit MCUs reference manual RM0038 in

which STM32L15xx6/8/B is ‘Cat.1’ device, STM32L15xx6/8/B-A is ‘Cat.2’ device,

STM32L100x6/8/B is ‘Cat.1’ device, STM32L100x6/8/B-A is ‘Cat.2’ device and to the

STM32L15xx6/8/B-A, STM32L15xx6/8/B, STM32L100x6/8/B-A, STM32L100x6/8/B

datasheets. Documents are available for download from the company website at

www.st.com/stm32.

Table 1 lists the STM32 microcontrollers concerned by this technical note.

Table 1. Applicable products

Type

Reference products

Microcontrollers

STM32L100C6, STM32L100R8, STM32L100RB,

STM32L100C6-A, STM32L100R8-A, STM32L100RB-A,

STM32L151C6, STM32L151C8, STM32L151CB,

STM32L151C6-A, STM32L151C8-A, STM32L151CB-A,

STM32L151R6, STM32L151R8, STM32L151RB,

STM32L151R6-A, STM32L151R8-A, STM32L151RB-A,

STM32L151V8, STM32L151VB,

STM32L151V8-A, STM32L151VB-A,

STM32L152C6, STM32L152C8, STM32L152CB,

STM32L152C6-A, STM32L152C8-A, STM32L152CB-A,

STM32L152R6, STM32L152R8, STM32L152RB,

STM32L152R6-A, STM32L152R8-A, STM32L152RB-A,

STM32L152V8, STM32L152VB,

STM32L152V8-A, STM32L152VB-A,

www.st.com