RA12

Multi-Protocol HF Reader IC with low power card detection mode

Support ISO14443A/B and ISO15693. Consume only 4.7 μA in card detection mode
RA12 is a single-chip reader designed for RFID communication at 13.56MHz. The chip support ISO14443A, ISO14443B, and ISO15693 with a 64-byte send and receive FIFO-buffer. Key features include Low Power Card Detection mode and External RF Field Detection mode. The RA12 reader offers hi-speed SPI communication up to 10Mbps, on-chip 3.3V regulators to stabilize power supply for both the chip and external companions, and a low power consumption mode to optimize energy usage.

Highlight Features

• Low Power Card Detection
• External RF Field Detection
• Support ISO14443A/B, all bit rates
• Support ISO15693, all modes
• Modulation index adjustable by software
• Maximum driving current up to 250mA @5V T_VDD
• Output impedance 3Ohms @5V T_VDD
• Wide operating voltage for Tx from 2.7V to 5.5V

Interface and Peripheral

• SPI Interface up to 10Mbps
• 64-byte send and receive FIFO-buffer
• 72-byte addressing user-configurable registers
• Interrupt (IRQ) PIN
• Programmable timer
• Low jitter on-chip oscillator
• Ultra low power on-chip 3.3V regulator

Operating Condition

• Operating temperature: -40°C to 85°C
• Operating voltage:
  • Receiver: 2.7V to 3.6V
  • Transmitter: 2.7V to 5.5V
  • Digital I/O: 2.7V to 5.5V
•  Power saving mode:
  • Hard Power Down: 0.6uA
  • Soft Power Down: 4.8uA
  • Standby: 1.0mA
  • Card Detection – Sleep: 4.8μA