User's Manual

DocID023883 Rev 3 7/19
UM1589 Features
2 Features
The M24LR-DISCOVERY kit includes M24LR board and the RF transceiver board
which
offer the following features.
M24LR board
• M24LR04E-R, a 4-Kbit EEPROM with an I²C-ISO/IEC 15693 dual interface and an
energy harvesting analog output (Vout pin) and a user-configurable digital output (RF
Write-in-progress or Busy pin) in an SO8N package
• 9-turn, 13.56-MHz etched antenna (20mm x 40mm) for RF powering and
communication
• STM8L152C6T6, 8-bit ultralow power microcontroller with up to 32 Kbytes of Flash
memory, 2 Kbytes of RAM, and 1 Kbyte of Data EEPROM in a 48-pin LQFP package
• STTS751 I²C low power temperature sensor
• 28-pin LCD on DIP24 socket (24 segments, 4 commons)
• Two push buttons (User and Reset)
• HC-49S-C20SSA, a 4-MHz crystal oscillator (not used in demonstration firmware)
• 4-pin connector (CN1) for STM8L programming and debug (SWIM)
• 2-pin connector (CN2) for external power supply source (3 to 6V)
• 5-pin connector (CN3) for M24LR04E-R and I²C bus probing
• 3-pin switch (JP1) to select M24LR board power source (M24LR04E Vout pin or
external)
RF transceiver board
• CR95HF, a 13.56-MHz multi-protocol contactless transceiver IC with SPI and UART
serial access communication
• 2-turn, 13.56-MHz etched loop antenna (47mm x 34 mm) with associated tuning circuit
and lowpass filter
• STM32F103CBT6, a 32-bit microcontroller with 128 Kbytes of Flash memory and USB
interface in a 48-pin LQFP package
• KF33BDT, a 3.3V low dropout (LDO) voltage regulator
• USB connector
• NX2520SA, a 27.12-MHz EXS00A-CS01206 crystal oscillator for CR95HF transceiver
• HC-49XA-C20QQA-8.000MHz for STM32
• 20-pin JTAG connector for STM32 programming and debugging
• 1 push button (Reset)