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Home > Products > Integrated Circuits (ICs) > Interface > Specialized

Microchip Technology SEC1110-A5-02NC-TR

Name: SEC1110-A5-02NC-TR
Brand: Microchip Technology
SKU: SEC1110-A5-02NC-TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SEC1110-A5-02NC-TR

Manufacturer:: Microchip Technology

Category:: Specialized

Package:: 16-VFQFN Exposed Pad

Datasheet:: SEC1110-A5-02NC-TR.pdf

Description:: IC INTERFACE SPECIALIZED 16QFN

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Product details

Overview

SEC1110-A5-02NC-TR from Microchip Technology is a single-chip Smart Card bridge IC supporting USB 2.0 Full-Speed (12 Mbps) host interface and one ISO/IEC 7816-compliant Smart Card interface. It integrates an enhanced 8051 core (9.6 MHz max), 16 KB OTP ROM, 1.5 KB RAM, and on-chip Smart Card power regulation for 1.8V/3.0V/5.0V cards. It enables secure USB-based smart card readers in payment terminals and identity authentication systems.

For engineers reviewing the SEC1110-A5-02NC-TR datasheet, SEC1110-A5-02NC-TR pinout, SEC1110-A5-02NC-TR application, or SEC1110-A5-02NC-TR equivalent, key selection considerations include USB Smart Card bridge functionality, EMV 4.2/4.3 and PC/SC compliance, T=0/T=1 protocol support, integrated Smart Card power control, and QFN-16 package compatibility with industrial temperature range (-40°C to +85°C).

Technical Context

The SEC1110-A5-02NC-TR implements a dedicated Smart Card subsystem with hardware-enforced activation/deactivation sequences, programmable ETU rate generation up to 826 Kbps, and three protocol timers (Guard, Timeout, CWT) for strict EMV timing compliance. Its 261-byte full-packet FIFO enables half-duplex operation without software intervention between transmit and receive phases.

USB functionality is handled by an integrated FS PHY with 1.5 kΩ D+ pull-up resistor and series termination, plus a USB Device Controller supporting five programmable bulk/interrupt endpoints (8/16/32/64 byte buffers). The 8051 core executes firmware from OTP ROM and manages all peripherals via SFR/XDATA register space.

Key Specifications

Parameter	Value and Actual Design Meaning
Smart Card Interfaces	One ISO/IEC 7816 interface with Class A/B/C/AB voltage support (1.8V/3.0V/5.0V)
USB Interface	Full-Speed USB 2.0 compliant (12 Mbps); integrated PHY with D+ pull-up and DP/DM termination
Processor Core	Enhanced 8051 running up to 9.6 MHz; 9× faster instruction cycle vs. standard 80C51
Memory	16 KB OTP ROM for firmware storage; 1.5 KB RAM for runtime data and stack
FIFO Depth	261-byte full-packet transmit/receive FIFO enabling zero-software-turnaround half-duplex operation
Supply Range	3.6V–5.5V input; internal regulators generate 3.3V analog and 1.8V/3.0V/5.0V Smart Card VCC
Operating Temp	-40°C to +85°C industrial grade; no external crystal required (self-clocking oscillator)

Pinout & Package

SEC1110-A5-02NC-TR is housed in a 16-pin QFN package (3 mm × 3 mm, 0.5 mm pitch) with exposed thermal slug connected to VSS. All pins are electrically validated per DS00001561E; NC (No Connect) pins are absent - no bond pads exist for them per Microchip's Known Good Die specification.

Pin/Terminal	Circuit Role	Design Meaning
SC1_VCC	Smart Card Power Output	Programmable 1.8V/3.0V/5.0V supply output for Smart Card VCC; requires 1 µF external decoupling
SC1_RST_N	Smart Card Reset Output	Active-low reset pulse generator for cold/warm resets; hardware-managed deactivation on card removal
SC1_CLK	Smart Card Clock Output	Configurable clock source for Smart Card communication; supports EMV-defined clock frequencies
SC1_IO	Smart Card Data I/O	Bidirectional serial data line for T=0/T=1 protocols; includes internal ESD protection per JESD22-A114D
SC1_PRSNT_N / JTAG_TMS	Card Presence Input / JTAG Mode Select	Active-low card detect with software-controllable internal pull-up; dual-function for boundary-scan test
USB_DP / USB_DM	USB Differential Data	Integrated FS PHY pins with on-chip 1.5 kΩ D+ pull-up and series termination; no external resistors needed
RESET_N	Global Reset Input	Asynchronous active-low system reset input; minimum 1 µs pulse width; analog input with Vil = 100 mV
VDD33 / VDD5	Analog & Digital Power Inputs	VDD5 accepts 3.6–5.5V main supply; VDD33 provides regulated 3.3V analog rail for internal circuitry

Key Features

Feature	Design Value
EMV Timing Compliance	Hardware-implemented Guard, Timeout, and CWT timers enforce all ISO/IEC 7816 and EMV 4.2/4.3 timing constraints
T=0 Protocol Recovery	Automatic character repetition on parity error and internal procedure byte filtering eliminate software-level T=0 error handling
Smart Card Power Management	On-chip regulator and current limiter with over-current sense interrupt; hardware-ensured deactivation sequence on card removal
FIFO Threshold Control	Dynamically programmable receive/transmit FIFO threshold with byte granularity enables adaptive interrupt-driven data flow
USB Endpoint Flexibility	Five configurable bulk/interrupt endpoints with selectable buffer sizes (8/16/32/64 bytes) simplify HID/class-compliant reader firmware
GPIO Reconfiguration	Multiple Smart Card pins (e.g., SC1_C4, SC1_C8, SC1_PRSNT_N) double as GPIOs or JTAG signals for board-level debug and expansion

Applications

Payment Terminal Reader	Government ID Authentication
Use Scenario: Embedded USB Smart Card reader in PCI PTS-approved point-of-sale terminals processing chip-and-PIN transactions. IC Role / Device Role / Timing Role: Acts as the secure bridge between USB host controller and EMV-compliant contact smart card; handles ATR parsing, T=0/T=1 protocol state machines, and EMV timer enforcement. Use Value: Eliminates external level shifters and discrete power regulators; reduces BOM count by integrating Smart Card VCC generation, reset sequencing, and USB PHY.	Use Scenario: Secure credential verification module in e-passport kiosks or national ID enrollment stations. IC Role / Device Role / Timing Role: Provides trusted Smart Card interface with TrustSpan™ security technology for cryptographic key handling and secure channel establishment per ICAO 9303. Use Value: Enables certified secure communication path from host OS to Smart Card using hardware-enforced protocol timers and ESD-protected card interface pins.
Banking ATM Reader	Enterprise Access Control
Use Scenario: High-reliability Smart Card interface in outdoor ATMs operating across -40°C to +85°C ambient conditions. IC Role / Device Role / Timing Role: Manages dual-voltage Smart Card insertion/removal events, automatic deactivation, and fault recovery without host CPU intervention. Use Value: Industrial temperature rating and self-contained Smart Card power control ensure uninterrupted operation in uncontrolled environments.	Use Scenario: Multi-factor authentication reader integrated into physical access control panels for corporate campuses. IC Role / Device Role / Timing Role: Bridges USB host to contact Smart Cards used for PKI-based digital signatures and certificate validation. Use Value: Full PC/SC compliance and 261-byte FIFO allow seamless integration with Windows Smart Card minidriver and Linux pcscd stacks.

Payment Terminal Reader

Government ID Authentication

Use Scenario: Embedded USB Smart Card reader in PCI PTS-approved point-of-sale terminals processing chip-and-PIN transactions.

IC Role / Device Role / Timing Role: Acts as the secure bridge between USB host controller and EMV-compliant contact smart card; handles ATR parsing, T=0/T=1 protocol state machines, and EMV timer enforcement.

Use Value: Eliminates external level shifters and discrete power regulators; reduces BOM count by integrating Smart Card VCC generation, reset sequencing, and USB PHY.

Use Scenario: Secure credential verification module in e-passport kiosks or national ID enrollment stations.

IC Role / Device Role / Timing Role: Provides trusted Smart Card interface with TrustSpan™ security technology for cryptographic key handling and secure channel establishment per ICAO 9303.

Use Value: Enables certified secure communication path from host OS to Smart Card using hardware-enforced protocol timers and ESD-protected card interface pins.

Banking ATM Reader

Enterprise Access Control

Use Scenario: High-reliability Smart Card interface in outdoor ATMs operating across -40°C to +85°C ambient conditions.

IC Role / Device Role / Timing Role: Manages dual-voltage Smart Card insertion/removal events, automatic deactivation, and fault recovery without host CPU intervention.

Use Value: Industrial temperature rating and self-contained Smart Card power control ensure uninterrupted operation in uncontrolled environments.

Use Scenario: Multi-factor authentication reader integrated into physical access control panels for corporate campuses.

IC Role / Device Role / Timing Role: Bridges USB host to contact Smart Cards used for PKI-based digital signatures and certificate validation.

Use Value: Full PC/SC compliance and 261-byte FIFO allow seamless integration with Windows Smart Card minidriver and Linux pcscd stacks.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Smart Card bridge applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SEC1210-CN-02	Supports two Smart Card interfaces and adds UART/SPI host interface; larger 24-pin QFN package	Required for dual-card readers or systems needing UART fallback; not pin-compatible with SEC1110-A5-02NC-TR	Select SEC1210-CN-02 only when dual Smart Card support or secondary host interface is mandatory.
AC102-2000	USB Smart Card bridge with ARM Cortex-M0+, 64 KB Flash, 8 KB RAM; supports T=0/T=1 but lacks EMV timer hardware	Requires software-based EMV timing enforcement; broader peripheral set but higher firmware development effort	Choose AC102-2000 if ARM ecosystem toolchain preference outweighs need for hardware EMV compliance assurance.

Compared with SEC1210-CN-02 and AC102-2000, SEC1110-A5-02NC-TR delivers optimal balance of EMV-certifiable hardware timing enforcement, minimal external component count, and compact QFN-16 footprint - making it the preferred choice for cost-sensitive, single-Smart Card USB readers requiring industrial-grade reliability.

Availability

SEC1110-A5-02NC-TR is available at Aetrix Electronics and suitable for payment terminal readers, government ID authentication systems, and banking ATM Smart Card interfaces requiring stable component supply, long-term lifecycle support, and industrial temperature operation.

Supply support for SEC1110-A5-02NC-TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Microchip Technology Inc. is a global semiconductor company specializing in microcontrollers, analog devices, and security ICs, with a focus on embedded control and secure connectivity solutions.

The SEC1110 product line was designed specifically for secure, standards-compliant Smart Card bridging in USB-connected terminals - emphasizing EMV timing accuracy, integrated power management, and minimal external component requirements.

FAQ

What is the primary function of the SEC1110-A5-02NC-TR?

The SEC1110-A5-02NC-TR is a dedicated Smart Card bridge IC that connects a USB 2.0 Full-Speed host to a single ISO/IEC 7816-compliant Smart Card. It integrates an enhanced 8051 processor, OTP ROM, RAM, Smart Card power regulation, and USB PHY - enabling fully self-contained USB Smart Card readers without external level shifters or regulators. SEC1110-A5-02NC-TR handles all protocol layers including T=0/T=1, EMV timing, and card activation/deactivation sequences in hardware.

Does the SEC1110-A5-02NC-TR support both T=0 and T=1 Smart Card protocols?

Yes, the SEC1110-A5-02NC-TR fully supports both T=0 and T=1 protocols per ISO/IEC 7816-3 and EMV 4.2/4.3 specifications. It includes dedicated hardware state machines for T=0 parsing, automatic character repetition for parity error recovery, internal procedure byte filtering, and protocol timers (Guard, Timeout, CWT) to enforce EMV-defined timing constraints. SEC1110-A5-02NC-TR does not require host software to manage low-level protocol timing or error recovery.

What Smart Card voltage classes does the SEC1110-A5-02NC-TR support?

The SEC1110-A5-02NC-TR supports Class A (5.0V), Class B (3.0V), Class C (1.8V), and Class AB (dual-voltage) Smart Cards. Its integrated Smart Card regulators generate precise 1.8V, 3.0V, or 5.0V outputs on SC1_VCC, with automatic detection and switching based on card presence and ATR response. An internal 4.8V comparator disables Class A support if the main supply falls below safe operating voltage, ensuring reliable 1.8V/3.0V operation even under marginal input conditions. SEC1110-A5-02NC-TR applies the selected voltage to all associated Smart Card pins (RST, CLK, IO, C4, C8).

Is an external crystal required for the SEC1110-A5-02NC-TR to operate?

No, the SEC1110-A5-02NC-TR features a self-clocking internal oscillator and requires no external crystal or resonator. It derives its 48 MHz master clock internally and uses programmable dividers to generate USB timing (48 MHz), Smart Card clocks (e.g., 3.57 MHz, 4.00 MHz, 4.91 MHz), and CPU clock (up to 9.6 MHz). This eliminates BOM cost and layout complexity associated with external timing components while maintaining full USB 2.0 Full-Speed and EMV timing accuracy. SEC1110-A5-02NC-TR achieves this through calibrated on-die RC oscillators and digital phase-locked loop (DPLL) techniques verified across temperature and voltage ranges.

What is the meaning of "NC" in the part number SEC1110-A5-02NC-TR?

In SEC1110-A5-02NC-TR, "NC" stands for "No Connect" and indicates that the device has no unused or unconnected pins - consistent with Microchip's Known Good Die (KGD) design where all bond pads correspond to functional pins. Unlike legacy parts with NC placeholders, SEC1110-A5-02NC-TR's QFN-16 package contains only electrically active signals (e.g., SC1_VCC, USB_DP, RESET_N); there are no NC pads or stub traces. The "TR" suffix denotes tape-and-reel packaging. SEC1110-A5-02NC-TR is functionally identical to SEC1110-A5-02 but explicitly confirms zero NC pins for simplified PCB routing and reliability assurance.

SEC1110-A5-02NC-TR Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: 16-VFQFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Applications:: Smart Card

Interface:: SPI Serial, USB, UART

Voltage - Supply:: 3V ~ 5.5V

Supplier Device Package:: 16-QFN (5x5)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

SEC1110-A5-02NC-TR FAQ

1.How can I place an order for SEC1110-A5-02NC-TR through Aetrix?

Please submit a Request for Quotation (RFQ) for SEC1110-A5-02NC-TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for SEC1110-A5-02NC-TR reliable?

The price and inventory of SEC1110-A5-02NC-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SEC1110-A5-02NC-TR is usually 5 days.

3.What payment methods are accepted for SEC1110-A5-02NC-TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SEC1110-A5-02NC-TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SEC1110-A5-02NC-TR?

SEC1110-A5-02NC-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SEC1110-A5-02NC-TR order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for SEC1110-A5-02NC-TR?

For technical support, including SEC1110-A5-02NC-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SEC1110-A5-02NC-TR requirements.

6.How does Aetrix verify that SEC1110-A5-02NC-TR is sourced from the original manufacturer or authorized distributors?

All SEC1110-A5-02NC-TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SEC1110-A5-02NC-TR meets industry standards.

7.What is the process for return or replacement of SEC1110-A5-02NC-TR?

All SEC1110-A5-02NC-TR units undergo pre-shipment inspection (PSI). If there is an issue with SEC1110-A5-02NC-TR, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The SEC1110-A5-02NC-TR part is unused and in its original packaging.

Return procedure for SEC1110-A5-02NC-TR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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