SEC1200-CN-02

Specialized Overview

The SEC1200-CN-02 is a single-chip Smart Card bridge to Full-Speed USB, SPI, and UART interfaces. It features two Smart Card interfaces compliant with ISO/IEC 7816, EMV, and PC/SC standards, supporting T=0 and T=1 protocols with ETU rates up to 826 Kbps. The device includes an enhanced 8051 microcontroller with 16 KB OTP ROM and 1.5 KB RAM, operating at a maximum clock speed of 16 MHz. Electrical specifications include a supply voltage range of 3.0 V to 5.5 V and 5.0 V tolerance on user-accessible I/O pins. It operates within a temperature range of 0°C to +70°C and is housed in a 24-pin QFN package.

Specialized Feature Summary

• Dual Smart Card interface supporting Class A, B, C, and AB cards with automatic power control and ESD protection
• Integrated Full-Speed USB controller with programmable endpoint buffers and internal pull-up resistor
• Enhanced 8051 processor with reduced instruction cycle time and extensive peripheral support including timers and JTAG
• Serial communication capabilities via SPI (Master/Slave) and UART with standard and high-speed baud rate support

Specialized Applications

• USB-based dual Smart Card readers
• SPI-based dual Smart Card readers
• UART-based dual Smart Card readers

Specialized Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure correct package type and temperature rating. Confirm RoHS compliance status and environmental declarations directly from the official datasheet or product change notifications prior to procurement.

Specialized Selection Notes

Select this component for designs requiring simultaneous connection to two Smart Cards via USB, SPI, or UART. Ensure the host system supports the required interface protocols and that the 3.0 V to 5.5 V supply range aligns with the target application's power architecture.

Specialized Part Context

This part belongs to the SEC1100/SEC1200 family of Smart Card bridges. While the SEC1100 offers a single Smart Card interface, the SEC1200 provides dual interfaces, making it suitable for multi-card applications. The CN-xx suffix indicates the 24-pin QFN package variant.

Specialized Replacement Considerations

The SEC1100 serves as a functional substitute if only one Smart Card interface is required. Verify pin compatibility and software register mapping differences between the single-interface and dual-interface variants before replacement.