Hangzhou Ruimeng Technology co. LTD., Version number
：
V1.0 2020.06.08
http://www.relmon.com Total
60
, Page
1
MS520
The Contactless Card Reader IC
PRODUCT DESCRIPTION
The MS520 is a highly integrated reader/writer for contactless communication at 13.56MHz. It integrates all kinds of passive
contact-less communicationmethodsand protocols at13.56MHz, and supports for multiple layer applications under ISO/IEC 14443
A/B mode.
FEATURES
● Highly integrated analog circuit to demodulate and decode
● Minimum externalcomponents used to drive an antenna
● Supports ISO/IEC 14443 A and B for 106kBd,212kBd,424kBd,848kBd rate
communication
● Up to 50 mm operating distance in Read/Write mode depending on the
antenna design
● Supported up to10Mbit/s SPIhost interface
● FIFO buffer handles 64 byte send and receive
● Flexible interrupt modes
● Hard reset with low power function
● Power-down by software mode
● Programmable timer
● Internal oscillator for connection to 27.12 MHz quartz crystal
● Operates from 2.7V to 3.3V Single power supply
● CRC co-processor
● Programmable I/O pins
● Internal self-test
APPLICATIONS
● Portable hand-held devices
● Public transport terminal
● Contact-less public telephone
● Intelligent electric meter reading
PACKAGE/ORDERING INFORMATION
Part Number
Package
Marking
MS520
QFN32
MS520
Hangzhou Ruimeng Technology co. LTD., Version number
：
V1.0 2020.06.08
http://www.relmon.com Total
60
, Page
2
MS520
SIMPILIED BLOCK DIAGRAM
The analog interface manages the modulation and demodulation of the analog signals. The contact-less UART manages the
protocol requirements for the communication protocols in cooperation with the host. The FIFO buffer ensures fast and
convenient data transfers to/from the host and the contact-less UART.
Fig 1. Simplified block diagram of the MS520