SEC1110-A5-02NC

Specialized Overview

The SEC1110-A5-02NC is a smart card bridge IC connecting ISO/IEC 7816 compliant cards to USB 2.0 Full Speed interfaces. It integrates an enhanced 8051 microcontroller with 16 KB OTP ROM and 1.5 KB RAM. The device supports Class A, B, C, and AB smart cards (1.8V, 3.0V, 5.0V) via a single interface. Operating voltage ranges from 3.6V to 5.5V, with a maximum operating current of 55 mA. It functions within commercial temperatures (0°C to +70°C) and utilizes a QFN-16 package.

Specialized Feature Summary

• Provides a single-chip solution for bridging smart card protocols to USB 2.0 Full Speed interfaces.
• Integrates an enhanced 8051 microcontroller with internal oscillator, eliminating the need for external crystals.
• Supports T=0 and T=1 smart card protocols with automatic half-duplex operation and full-packet FIFO buffering.
• Includes integrated USB PHY with pull-up resistors and programmable endpoint buffers.

Specialized Applications

• USB-based smart card readers
• Secure authentication modules requiring USB connectivity
• IoT devices utilizing smart card credentials

Specialized Procurement Notes

Verify the specific suffix -A5-02NC against the manufacturer's Product Identification System to confirm temperature range and packaging details. Ensure compatibility with host system power requirements, as the device requires a supply input between 3.6V and 5.5V. Confirm that the QFN-16 package footprint matches the design layout.

Specialized Selection Notes

Select this component when a single smart card interface connected exclusively via USB is required. The SEC1110 differs from the SEC1210 by lacking UART and SPI host capabilities. Verify that the application does not require dual smart card slots or industrial temperature ratings (-40°C to +85°C), which are available in other variants.

Specialized Part Context

The SEC1110 belongs to the SEC11xx/SEC12xx family of smart card bridges manufactured by Microchip Technology. This series provides TrustSpan technology for secure communication. The SEC1110 specifically targets applications needing one smart card slot with USB connectivity, distinguishing it from the dual-slot SEC1210.

Specialized Replacement Considerations

The SEC1110-A5-02 is the non-lead-free equivalent. For industrial temperature ranges, consider the SEC1110-I series. If UART support is needed, the SEC1210 is the functional alternative.