RE31

Multi-Protocol HF Reader IC

13.56-MHz Multi-Standard Reader IC : Support ISO14443A/B and ISO15693 : SPI 2.7V ~ 7V 28-TSSOP (0.173″, 4.40mm Width)
The RE31 is a single-chip long-range reader designed for all popular 13.56MHz RFID standard protocols, including ISO14443A, ISO14443B, and ISO15693. 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 10Mbps and includes on-chip dual 80mA 3.3V 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 ISO14443A/B, all bit rates
• Support ISO15693, all modes
• Modulation index adjustable by software
• Outstanding read range with maximum driving current up to
  • 300mA @5V TVDD
  • 400mA @7V TVDD
• Wide operating voltage for Tx from 2.7 to 7.0 V

Interface and Peripheral

• SPI Interface up to 10 Mbps
• 64-byte send and receive FIFO-buffer
• 64-byte addressing user-configurable registers
• 256-bytes EEPROM
• Interrupt (IRQ) PIN
• Programmable timer
• Low jitter on-chip oscillator
• On-Chip dual 80mA 3.3V regulators

Operating Condition

• Operating temperature from -40°C to 85°C
• Operating voltage:
  • Receiver: 2.7V to 3.3V
  • Transmitter: 2.7V to 7.0V
• Power saving mode:
  • Power Down: 6.0uA
  • Standby: 1.3mA
• All receiver blocks active: 8.0mA