ST Manuals

This application note presents the calculation method for the antenna matching circuit used in ST CRX14 Coupler series.

The document discusses the semiconductor industry's transition towards lead-free packaging in accordance with new international regulations. It highlights the collaborative efforts of STMicroelectronics, Infineon Technologies, Philips Semiconductors, and Freescale (E4 group) to provide consistent and compatible solutions. The document provides detailed information on ST's lead-free finishing solutions for lead-frame based packages and ball grid array packages.

Introducing the characteristics of metal whiskers and suppression techniques in tin alloy coatings

This application note describes the solderability tests performed on STMicroelectronics lead-free devices, and how to form a reliable solder joint with the base material of the circuit board, using lead-free (Sn-Ag-Cu) or leaded (Sn-Pb) solder.

This document describes the features and applications of the 64-bit unique identifier (UID) used in STMicroelectronics contactless RFID applications.

This application note provides a step-by-step procedure to design a customized tag antenna for 13.56 MHz RFID applications.

This application note explains the differences between the M24LR64-R dual interface EEPROM and the standard M24C64-F, M24C64-R, M24C64-W EEPROMs. It provides detailed information on hardware and software considerations, as well as the memory organization and access methods of the M24LR64-R.

This application note explains how to develop a Visual Basic or C/C++ application code to drive STMicroelectronics STARTKIT-M24LR-A starter kit from a host computer

This application note describes how to design application boards accepting either standard M24LRxx-R or energy-harvesting M24LRxxE-R devices.

This application note explains how to apply the NDEF format to STMicroelectronics ISO/IEC 15693 products (LRI1K, LRI2K, LRIS2K, LRIS64K and M24LR64-R).

This document describes how to effectively manage the operating states and modes of CR95HF and STRFNFCA devices to define an appropriate wakeup condition to reduce power consumption. CR95HF and STRFNFCA devices have two main functional domains. In Active mode, the devices can communicate with a host using one of the serial interfaces (UART or SPI) or with RFID tags using its RF capabilities. In Wait for Event (WFE) mode, the device remains quiescent while waiting for an external event. In this mode, a very low level of power consumption can be achieved. Application engineers can manage the wakeup conditions to optimize wakeup time or system power consumption.

This application note describes the ISO/IEC 14443-3 libraries used by a microcontroller to drive the CR95HF 13.56 MHz multiprotocol contactless transceiver using an SPI or UART interface in order to perform wireless communications with ISO/IEC 14443 Type A or B contactless tag. The library was developed to speed up the development of applications using the CR95HF. The CR95HF library is composed of three layers: ■ CR95HF low level layer ■ Standard ISO/IEC 14443-3 protocol layer (type A and type B) ■ SRIX4K product specific layer The library code has been developed in ANSI C language, and validated on an STM32 evaluation board.

This application note describes STM8L162M8 demonstration firmware which reads and writes encrypted data into an LRxk contactless tag.

This application note highlights the key differences of RF addressing modes between the products of the ISO/IEC 15693 STMicroelectronics family, which is composed of the dual interface EEPROM products (M24LRx) and the long range contactless products (LRix). The memory size is a key point and has an impact on some specific parameters of the RF (Radio frequency) commands.