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Microchip Technology SEC1110-A5-02NC
- Part No.:
- SEC1110-A5-02NC
- Manufacturer:
- Microchip Technology
- Category:
- Specialized
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
SEC1110-A5-02NC.pdf
- Description:
- IC INTERFACE SPECIALIZED 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,364
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Product details
Overview
SEC1110-A5-02NC 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 is used in compact USB-based Smart Card readers requiring EMV 4.2/4.3 and PC/SC compliance.
For engineers reviewing the SEC1110-A5-02NC datasheet, SEC1110-A5-02NC pinout, SEC1110-A5-02NC application, or SEC1110-A5-02NC equivalent, key selection criteria include USB Smart Card bridge functionality, single-card support, integrated Smart Card voltage regulation, FIFO-based T=0/T=1 protocol handling, and industrial temperature range (-40°C to +85°C) operation.
Technical Context
The SEC1110-A5-02NC 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.
The integrated USB 2.0 device controller supports five programmable endpoints (bulk/interrupt), 8/16/32/64-byte buffers, and embedded 1.5 kΩ pull-up resistor on USB_DP. The self-clocking internal oscillator eliminates external crystal requirements, and Smart Card I/O pins feature full JESD22-A114D ESD protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Host Interface | USB 2.0 Full-Speed only - no UART or SPI; fixed single-host-path architecture. |
| Smart Card Interfaces | One ISO/IEC 7816 interface - supports Class A/B/C/AB cards (1.8V/3.0V/5.0V) with automatic voltage switching. |
| FIFO Depth | 261 bytes per direction - enables full-packet buffering for ATR and APDU exchange without real-time CPU scheduling. |
| Protocol Support | T=0 and T=1 - includes internal procedure byte filtering, automatic parity error recovery, and hardware-managed cold/warm resets. |
| Operating Voltage | 3.6V–5.5V supply - powers internal 3.3V/1.2V regulators and Smart Card VCC outputs; disables Class A (1.8V) if input <4.8V. |
| Temperature Range | -40°C to +85°C - qualified for industrial applications; no commercial-only variants. |
| Package | 16-pin QFN (3×3 mm, 0.5 mm pitch) with exposed thermal slug - requires VSS connection for thermal and electrical integrity. |
Pinout & Package
SEC1110-A5-02NC is housed in a 16-pin QFN package (3 mm × 3 mm, 0.5 mm pitch) with exposed thermal slug that must be connected to VSS. Pin functions are validated per Microchip DS00001561E, pages 9–12.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SC1_VCC | Smart Card power output | Programmable 1.8V/3.0V/5.0V supply for Smart Card; requires 1 µF external decoupling capacitor. |
| SC1_RST_N | Active-low Smart Card reset | Drives low pulse to initiate card ATR; also configurable as GPIO2. |
| SC1_CLK | Smart Card clock output | Provides programmable clock frequency (ETU rate up to 826 Kbps); also configurable as GPIO1. |
| SC1_IO | Smart Card bidirectional data | Half-duplex serial I/O for T=0/T=1; internally protected per JESD22-A114D; also configurable as GPIO0. |
| SC1_PRSNT_N / JTAG_TMS | Smart Card presence detection | Active-low card detect with internal pull-up; dual-function as JTAG test mode select. |
| USB_DP / USB_DM | USB 2.0 differential data pair | Integrated 1.5 kΩ pull-up on DP and series termination resistors - no external components required. |
| RESET_N | Active-low system reset input | Analog-compatible input (Vil = 100 mV); triggers STOP mode entry on active pulse ≥1 µs. |
| VDD33 | 3.3V analog power output | Stable 3.3V supply for internal analog blocks; requires 1 µF external decoupling capacitor. |
| VDD5 | Main power input | Accepts 3.6V–5.5V or direct VBUS; powers Smart Card regulators and digital logic. |
Key Features
| Feature | Design Value |
|---|---|
| EMV Timing Compliance | Hardware-enforced Guard, Timeout, and CWT timers ensure strict adherence to EMV 4.2/4.3 timing constraints during reset, ATR, and APDU exchange. |
| Automatic Card Deactivation | Hardware-triggered deactivation on card removal - guaranteed sequence execution independent of CPU state or clock activity. |
| Smart Card Power Management | On-chip regulator delivers 1.8V/3.0V/5.0V from single VDD5 input; includes over-current sense interrupt and short-circuit protection. |
| USB Endpoint Flexibility | Five programmable bulk/interrupt endpoints with selectable buffer sizes (8/16/32/64 bytes) simplify HID-class or custom Smart Card class driver implementation. |
| Real-Time Software Relief | 261-byte FIFO and threshold interrupt allow software to process ATR at leisure - worst-case response window relaxed to ~180 ms. |
Applications
| USB Smart Card Reader | EMV Payment Terminal |
|---|---|
Use Scenario: Compact desktop or portable reader connecting to PCs/laptops via USB cable for identity authentication or banking transactions. IC Role / Device Role / Timing Role: Primary Smart Card bridge - handles all ISO/IEC 7816 physical layer, protocol timing, power control, and USB enumeration. Use Value: Eliminates need for external level shifters, crystal, or discrete power regulators - reduces BOM count and PCB area by >30% versus discrete solutions. |
Use Scenario: Embedded payment terminal where secure card reading must meet PCI PTS and EMVCo certification requirements. IC Role / Device Role / Timing Role: Certified Smart Card interface controller - enforces EMV-defined guard time, bit duration, and reset timing with hardware timers. Use Value: Reduces certification effort by providing pre-validated EMV timing behavior and built-in ESD protection on card pins (JESD22-A114D). |
| Government ID Reader | Secure Access Control System |
Use Scenario: Physical access reader using ePassports or national ID cards compliant with ICAO 9303 and PKI-based authentication. IC Role / Device Role / Timing Role: TrustSpan-enabled bridge - performs secure channel establishment, cryptographic command routing, and card power sequencing. Use Value: Enables secure communication path from host application to card without exposing sensitive keys - leverages TrustSpan technology for tamper-resistant processing. |
Use Scenario: Multi-door access panel integrating biometric verification and Smart Card validation in industrial facilities. IC Role / Device Role / Timing Role: Dual-role interface - manages card presence detection (SC1_PRSNT_N), LED status signaling (SC_LED_ACT_N), and fault-safe deactivation on card removal. Use Value: Guarantees fail-safe card removal handling - hardware-initiated deactivation prevents residual current leakage or protocol violation during hot-plug events. |
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 | Two Smart Card interfaces, adds UART host interface and SPI host capability - larger 24-pin QFN package. | Supports dual-card readers or hybrid USB/UART host designs; not pin-compatible or drop-in replaceable. | Select when dual-card support or secondary host interface is required; SEC1110-A5-02NC cannot be upgraded without PCB redesign. |
| 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 and TrustSpan. | Targets cost-sensitive consumer readers; requires external Smart Card power management and crystal. | Choose for non-EMV applications where firmware flexibility outweighs hardware timing assurance; SEC1110-A5-02NC provides certified EMV compliance out-of-box. |
Compared with SEC1210-CN-02 and AC102-2000, the SEC1110-A5-02NC offers the smallest footprint and lowest component count for single-card USB readers, with hardware-enforced EMV timing and integrated Smart Card power - making it optimal for space-constrained, certified industrial terminals.
Availability
SEC1110-A5-02NC is available at Aetrix Electronics and suitable for USB Smart Card readers, EMV payment terminals, government ID readers, and secure access control systems requiring stable component supply across long product lifecycles.
Supply support for SEC1110-A5-02NC 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 U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and security ICs, with global design, manufacturing, and support infrastructure.
The SEC1110 product line delivers TrustSpan-enabled Smart Card bridges optimized for secure, standards-compliant USB-connected identity and payment systems - designed to reduce certification risk and accelerate time-to-market for certified terminals.
FAQ
What is the primary function of the SEC1110-A5-02NC?
The SEC1110-A5-02NC is a dedicated Smart Card bridge IC that connects ISO/IEC 7816 Smart Cards to a USB 2.0 Full-Speed host. It integrates an enhanced 8051 core, Smart Card power regulation, protocol timers, and USB device controller - enabling fully compliant EMV and PC/SC operation without external support components. The SEC1110-A5-02NC does not support UART or SPI host interfaces.
Does the SEC1110-A5-02NC support both T=0 and T=1 Smart Card protocols?
Yes, the SEC1110-A5-02NC fully supports both T=0 and T=1 protocols per ISO/IEC 7816-3. It includes internal procedure byte filtering for T=0, automatic character repetition for parity error recovery, and hardware-managed protocol timers (CWT, WWT, BWT) to enforce EMV timing constraints. These capabilities are confirmed in DS00001561E sections 1.1 and 10.0.
What Smart Card voltage classes does the SEC1110-A5-02NC support?
The SEC1110-A5-02NC supports Class A (1.8V), Class B (3.0V), and Class C (5.0V) Smart Cards via its SC1_VCC pin, which dynamically regulates output voltage based on card detection. An internal 4.8V comparator disables Class A support if VDD5 falls below threshold. This multi-voltage capability is documented in DS00001561E section 1.2 and Table 5-1.
Is an external crystal required for SEC1110-A5-02NC operation?
No, the SEC1110-A5-02NC uses a self-clocking internal oscillator and requires no external crystal or resonator. This simplifies layout and reduces BOM cost. The oscillator drives the 48 MHz USB PHY and 9.6 MHz 8051 core - both frequencies are derived internally and verified across temperature and voltage ranges per DS00001561E section 15.0.
What is the meaning of "-A5-02NC" in the part number SEC1110-A5-02NC?
The suffix "-A5-02NC" denotes a specific configuration: "A5" indicates industrial temperature grade (-40°C to +85°C), "02" refers to the standard revision level, and "NC" confirms no-connect (unbonded) pins - consistent with the 16-pin QFN package where all pins are functional per DS00001561E Table 3-1. This variant has no UART or SPI capability, unlike SEC1210 derivatives.
SEC1110-A5-02NC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 16-VFQFN Exposed Pad
- Packaging:
- Tray
- 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 FAQ
1.How can I place an order for SEC1110-A5-02NC through Aetrix?
Please submit a Request for Quotation (RFQ) for SEC1110-A5-02NC 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 reliable?
The price and inventory of SEC1110-A5-02NC 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 is usually 5 days.
3.What payment methods are accepted for SEC1110-A5-02NC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SEC1110-A5-02NC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SEC1110-A5-02NC?
SEC1110-A5-02NC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SEC1110-A5-02NC 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?
For technical support, including SEC1110-A5-02NC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SEC1110-A5-02NC requirements.
6.How does Aetrix verify that SEC1110-A5-02NC is sourced from the original manufacturer or authorized distributors?
All SEC1110-A5-02NC 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 meets industry standards.
7.What is the process for return or replacement of SEC1110-A5-02NC?
All SEC1110-A5-02NC units undergo pre-shipment inspection (PSI). If there is an issue with SEC1110-A5-02NC, 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 part is unused and in its original packaging.
Return procedure for SEC1110-A5-02NC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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