Multi-Protocol HF Reader IC (2nd Gen.) – RE31

Type: RFID Reader IC

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Categories: Industrial IoT, Multi-Protocol HF Reader IC Tags: HF Reader, Multi-Protocol HF Reader IC

RE31

Multi-Protocol HF Reader IC

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The RE31 is a single-chip long-range reader designed for all popular 13.56 MHz RFID standard protocols, including ISO/IEC 14443 A/B, and ISO/IEC 15693. It features a 64-byte FIFO buffer for efficient data handling, a 256-byte EEPROM for ample storage, and high transmission power for robust communication. The chip supports hi-speed SPI communication up to 10 Mbps and includes on-chip dual 80 mA 3.3 V regulators to stabilize the power supply for both the chip and external components. The RE31 reader also offers a low power consumption mode to optimize energy usage.

Highlight Features

Support Standard HF RFID Protocols
• ISO/IEC 14443 A/B, All Bit Rates
• ISO/IEC 15693, All Modes
NFC Forum Tag Type 1, 2, 4A, 4B, 5
Host Interface: SPI (up to 10 Mbps)
Power-Down Mode Consumption : 1.0 μA
On-Chip Dual 80 mA 3.3 V Regulators
Wide Operating Voltage for Tx from 2.7 V to 7.0 V

Product Attributes	Description
Specification	RE31
Communication Protocol
ISO/IEC 14443 A, up to 848 kbps (NFC Type 1,2,4A Tag)	Yes
ISO/IEC 14443 B, up to 848 kbps (NFC Type 4B Tag)	Yes
ISO/IEC 15693, 1 and 2 Subcarrier (NFC Type 5 Tag)	Yes
Operating Conditions
Receiver Voltage	2.7 V – 3.3 V
Transmitter Voltage	2.7 V – 7.0 V
Operating Temperature [°C]	–40 to +85
Maximum Driving Current	300 mA @ 5 V TVDD 400 mA @ 7 V TVDD
Others
Interface	SPI
EEPROM [Bytes]	256
IRQ Pin	Yes
Low-Power Consumption on Power-Down Mode [μA]	6
Available Form Factors	QFN32 (5×5), TSSOP 28-pin