Holtek - BC45B4523: Application IC for NFC card reader development

With many years of experience in the field of IC and MCU manufacturing, the BC45B4523 multi-standard NFC reader IC product line from Hotek has always been highly appreciated. 

More information

BC45B4523 is an NFC reader controller that supports 13.56 MHz transmission frequency. The IC is compatible with ISO 14443A, ISO 14443B and ISO 15693 protocols to support Crypto_M encryption and decryption functions as a solution for receiving signals from magnetic cards. Additionally, the ISO 14443A/B protocol provides four bit rate options of 106kbps, 212kbps, 424kbps and 848kbps.  

The multi-protocol BC45B4523 can work with a wide range of NFC tags, making it an effective solution for secure transmission over short distances. LDO 3.3V, maximum output current 150mA is fully integrated into the IC. Furthermore, the up to 250mA IC integrates a low power mode for automatic tag detection.  

With the above advantages, BC45B4523 is the perfect product for smart lock, parking lot, etc. Applications. 


– Operating voltage: Receiver 2.7 ~ 3.6V, transmitter: 2.7 ~ 5.5V 

– SPI transmission speed up to 10Mbps 

– 64-byte send and receive FIFO buffer 

– Ultra low power on-chip 3.3V regulator 

– Energy saving modes:  

+ Standby: 1mA 

+ Hard Power Down: 0.5uA 

+ Soft Power Down: 4.7 uA 

+ Support card detection mode: 10uA @ wake-up time = 500ms 

– Package: 24QFN 


– Compact size 

– Energy saving 

– Can decode many types of magnetic cards 

– High precision 


– Smart lock 

– Parking  

– Payment machine 

Learn more: BC45B4523

Contact EPI Vietnam Technologies – the authorized distributor of Holtek in Vietnam for better support on products and prices.