SEC1100-A5-02

Specialized Overview

The Microchip Technology SEC1100-A5-02 is a single-chip Smart Card bridge providing connectivity to USB, SPI, and UART interfaces. It features an enhanced 8051 microcontroller with 16 KB OTP ROM and 1.5 KB RAM, operating at a maximum clock speed of 16 MHz. The device supports Full-Speed (12 Mbps) USB 2.0 operation and includes one Smart Card interface compliant with ISO/IEC 7816, EMV, and PC/SC standards. It accommodates Class A, B, C, and AB cards with supply voltages ranging from 3.0 V to 5.5 V. The component is housed in a 16-pin QFN package measuring 5x5 mm and operates within a temperature range of 0°C to +70°C.

Specialized Feature Summary

• Provides a unified hardware solution for bridging Smart Card protocols to USB, SPI, and UART host interfaces without external protocol controllers.
• Integrates an enhanced 8051 processor core with dedicated peripherals including timers, watchdog, and JTAG debug capabilities for firmware execution.
• Supports full-duplex T=0 and T=1 Smart Card protocols with automatic parity error recovery and dynamic FIFO threshold management.
• Includes integrated power regulation and current limiting for Smart Card slots, supporting multiple voltage classes (1.8 V, 3.0 V, 5.0 V).

Specialized Applications

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

Specialized Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature grade. Ensure compatibility with system voltage requirements and interface needs before procurement. Check for any recent product change notifications or lifecycle status updates directly from the supplier.

Specialized Selection Notes

Select this component when a single-chip solution is required to interface Smart Cards with USB, SPI, or UART hosts. Consider the SEC1100 for single-card applications; choose the SEC1200 series if dual Smart Card support or additional SPI/UART interfaces are necessary. Verify that the 16 KB OTP memory suffices for the intended application firmware.

Specialized Part Context

The SEC1100 belongs to the SMSC SEC1100/SEC1200 family of Smart Card bridges. This series was originally developed by Standard Microsystems Corporation (SMSC), which was subsequently acquired by Microchip Technology. The devices are designed to simplify Smart Card reader designs by integrating the protocol controller, USB device controller, and Smart Card interface into a single IC.

Specialized Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Engineering changes or obsolescence notices should be verified through Microchip Technology's official channels.