Chip Overview:

The ZX3803 is a highly integrated contactless communication chip operating at 13.56 MHz.supporting reader/writer modes compliant with ISO/EC 14443 Type A and Type B protocolsIt also provides a low-power card detection function, making it suitable for battery-poweredreader devices that require low power consumption while being able to process externalcard s entering the RF field in real time. The product features low voltage operation, lowpower consumption, strong driving capability, multi-interface support, and multi-protocolcompatibility. lt is ideal for contactless reader applications with requirements for low power.low voltage, and low cost.

Typical Applications:

The ZX3803 supports various microcontroller interface types that can be directly connectedsuch as SPl, l2C, and UART. The microcontroller interface is identified through the logiclevel on the control pin after the reset phase. Designed for applications in the financial sectoco ntactless door locks, access control, and various card reader devices, this low-voltage.low-cost chip complies with lSO/EC 14443 Type AType B protocols and operates at a highfrequency of 13.56 MHz. lt features high integration and ultra-low power consumption. Thetypical application block diagram is shown below.

Product Features:

• Compliant with lSO/lEC 14443 Type AB standards

• Supports Low Power Card Detection (LPCD) function

• Multiple host interfaces supported:

>> SPl interface up to 10 Mbit/s

>> 12C interface supporting Fast Mode up to 400 kbit/s

>> Serial UART interface with maximum communication rate of 1,228.8 kbits

• Built-in power amplifier with adjustable transmit power

• Adjustable receive gain

• External clock: 27.12 MHz

• Supports data rates of 106 kbit/s, 212 kbit/s, and 424 kbit/s

• 64-byte transmit/receive FlFO buffer

• Built-in CRC controller

• Programmable timers

• Flexible and configurable interrupt output modes

• Operating voltage: 2.0 V- 5.5 V

• Separate analog, digital, and transmit power supplies

• Power-saving modes including hardware ard software power-down

• Supports TIN and TOUT

• Crystal fast-startup function supported

• EMV under/overshoot optimization feature RF transmission shutdown at high temperature

• Built-in temperature sensor with automatic

• Programmable l/O pins

• Packaging options: QFN32, SOP16