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Microchip Technology SEC1110-A5-02-TR
- Part No.:
- SEC1110-A5-02-TR
- Manufacturer:
- Microchip Technology
- Category:
- Specialized
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
SEC1110-A5-02-TR.pdf
- Description:
- IC INTERFACE SPECIALIZED 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,030
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Product details
Overview
SEC1110-A5-02-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 (1.8V/3.0V/5.0V). It is used in compact USB Smart Card readers requiring EMV 4.2/4.3 and PC/SC compliance.
For engineers reviewing the SEC1110-A5-02-TR datasheet, SEC1110-A5-02-TR pinout, SEC1110-A5-02-TR application, or SEC1110-A5-02-TR equivalent, key selection criteria include Smart Card protocol support (T=0/T=1), integrated USB device controller with five programmable endpoints, FIFO depth (261 bytes), self-clocking oscillator (no external crystal), and 5.0V-tolerant I/O pins for robust system integration.
Technical Context
The SEC1110-A5-02-TR implements a dedicated Smart Card subsystem with hardware-managed activation/deactivation sequences, EMV-compliant protocol timers (Guard, CWT, Timeout), and automatic card deactivation on removal - all handled without software intervention. Its USB subsystem includes an integrated FS PHY with 1.5 kΩ D+ pull-up resistor and series termination on DP/DM, plus a USB Device Controller supporting control (8–64 byte) and bulk/interrupt (8–64 byte) endpoint buffers.
The embedded 8051 core executes firmware from 16 KB OTP ROM and uses 1.5 KB RAM for stack and data; it supports JTAG debug, two 16-bit timers, watchdog timer, and GPIO reconfiguration (e.g., SC1_PRSNT_N as JTAG_TMS or TIMER0_IN). All peripherals - Smart Card, USB, and GPIO - are memory-mapped via SFR/XDATA space for unified register access.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Host Interface | USB 2.0 Full-Speed only (12 Mbps); no UART or SPI support - defines fixed connectivity architecture. |
| Smart Card Interfaces | One ISO/IEC 7816 interface supporting Class A/B/C/AB cards (1.8V/3.0V/5.0V) with full T=0/T=1 protocol handling. |
| FIFO Depth | 261-byte full-packet FIFO per direction (TX/RX) - eliminates real-time software timing pressure during APDU exchange. |
| Processor Core | Enhanced 8051 running up to 9.6 MHz; instruction cycle ~9× faster than standard 80C51 - enables efficient protocol stack execution. |
| Memory | 16 KB OTP ROM (firmware storage), 1.5 KB RAM (runtime data/stack) - sufficient for EMV-compliant stack and USB descriptor handling. |
| Power Supply | 3.6V–5.5V input; internal regulators generate 3.3V analog and 1.2V core rails - simplifies board-level power design. |
| ESD Protection | JESD22-A114D (HBM) and JESD22-A115A (MM) compliant on Smart Card pins - meets Smart Card reader field reliability requirements. |
Pinout & Package
SEC1110-A5-02-TR is housed in a 16-pin QFN package (3 mm × 3 mm, 0.5 mm pitch) with exposed thermal slug (VSS). All pins are electrically defined per DS00001561E; no NC pads exist.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SC1_VCC | Smart Card power output | Programmable 1.8V/3.0V/5.0V supply for Class A/B/C cards; requires external 1 µF decoupling capacitor. |
| SC1_RST_N | Smart Card reset output | Active-low open-drain signal initiating cold/warm reset and triggering ATR; asserted automatically on card insertion/removal. |
| SC1_CLK | Smart Card clock output | Configurable frequency generator (ETU rate up to 826 Kbps); synchronized to card timing requirements. |
| SC1_IO | Smart Card bidirectional data | Half-duplex serial I/O with hardware-controlled turnaround - no software polling or state management required. |
| SC1_PRSNT_N / JTAG_TMS | Card presence / JTAG mode select | Active-low card detect with internal pull-up; dual-function pin enabling debug access when configured as JTAG_TMS. |
| USB_DP / USB_DM | USB differential data pair | Integrated 1.5 kΩ D+ pull-up and series termination - eliminates need for external USB resistors. |
| RESET_N | Global active-low reset input | Analog-compatible input (VIL = 100 mV); ≥1 µs pulse triggers chip reset and STOP mode entry. |
| VDD33 / VDD5 | Power supply inputs | VDD5 accepts 3.6–5.5V main supply; VDD33 provides regulated 3.3V analog rail for internal circuitry and external decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| EMV Timing Compliance | Hardware-enforced Guard, CWT, and Timeout timers ensure strict adherence to EMV 4.2/4.3 timing constraints - eliminates firmware timing bugs in payment terminal designs. |
| Automatic Card Deactivation | Dedicated hardware sequence triggered on card removal - guarantees compliant deactivation even if CPU is halted or clock stopped. |
| T=0 Parity Recovery | Automatic character repetition on parity error - maintains protocol integrity without host software intervention. |
| Self-Clocking Oscillator | No external crystal or resonator required - reduces BOM count and PCB footprint in cost-sensitive readers. |
| 5.0V-Tolerant I/O Pins | User-accessible GPIOs tolerate 5.0V logic levels - simplifies interfacing with legacy 5V systems without level shifters. |
| Wake-On-Event Support | Asynchronous card-insertion detection restarts system clock from STOP mode - enables ultra-low-power standby operation. |
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: Acts as USB-to-Smart Card protocol bridge; handles ATR negotiation, APDU framing, and EMV timing enforcement in hardware. Use Value: Eliminates need for external microcontroller and USB transceiver - reduces bill-of-materials and design complexity while ensuring EMV certification readiness. |
Use Scenario: Integrated into point-of-sale (POS) terminals for contact-based card processing compliant with PCI PTS and EMV Level 1 requirements. IC Role / Device Role / Timing Role: Provides certified Smart Card interface with guaranteed EMV timing compliance and fault-safe deactivation on card ejection. Use Value: Hardware-enforced guard time and timeout intervals meet strict EMV validation test cases - avoids costly firmware rework during certification. |
| Government ID Reader | Secure Access Control System |
|
Use Scenario: Reader for national eID cards (e.g., EU ePassport, US PIV) requiring ISO/IEC 7816-3 and ETSI TS 102 221 compliance. IC Role / Device Role / Timing Role: Manages synchronous card communication via GPIO-controlled clock/data lines and enforces ETSI-defined timing parameters. Use Value: Internal procedure byte filtering and T=0 protocol parsing offload host processor - accelerates secure document verification workflows. |
Use Scenario: Embedded reader module in physical access control panels authenticating employee smart badges in enterprise or industrial facilities. IC Role / Device Role / Timing Role: Bridges host MCU to contact Smart Card; delivers wake-on-event capability and low-power STOP mode for battery-backed operation. Use Value: 1 µA typical STOP current and hardware card-detect interrupt enable multi-year battery life in wireless access readers. |
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 SPI1 host interface - not pin-compatible or functionally identical. | Required for dual-card readers or systems needing UART fallback; larger 24-pin QFN package. | Select SEC1210-CN-02 only when dual Smart Card support or UART host interface is mandatory - SEC1110-A5-02-TR remains optimal for single-USB-reader cost targets. |
| AC102-1000 | USB Smart Card bridge with ARM Cortex-M0+, 64 KB Flash, 8 KB RAM; supports T=0/T=1 but lacks integrated EMV timers and hardware deactivation. | Requires full firmware implementation of EMV timing and card lifecycle management - increases development effort and certification risk. | Choose AC102-1000 only if flexible firmware customization outweighs certification assurance - SEC1110-A5-02-TR delivers pre-validated EMV behavior out-of-box. |
Compared with SEC1210-CN-02 and AC102-1000, the SEC1110-A5-02-TR offers the narrowest feature set optimized for single-interface USB readers, delivering lowest BOM cost, smallest footprint, and highest EMV timing assurance through hardware enforcement - making it ideal for high-volume, certified payment and ID reader designs.
Availability
SEC1110-A5-02-TR is available at Aetrix Electronics and suitable for USB Smart Card readers, EMV payment terminals, and government eID authentication devices requiring stable component supply across production lifecycles.
Supply support for SEC1110-A5-02-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 leading provider of microcontrollers, analog components, and security solutions, headquartered in Chandler, Arizona, serving automotive, industrial, and consumer markets globally.
The SEC1110 product line delivers TrustSpan™-enabled Smart Card bridge ICs designed specifically for secure, standards-compliant USB-connected identity and payment systems - prioritizing EMV timing fidelity, hardware-assisted card lifecycle control, and minimal external component count.
FAQ
What is the primary function of the SEC1110-A5-02-TR in a Smart Card system?
The SEC1110-A5-02-TR serves as a dedicated USB-to-Smart Card bridge IC, integrating an enhanced 8051 core, USB 2.0 Full-Speed device controller, and a fully compliant ISO/IEC 7816 Smart Card interface. It handles all protocol layers - including T=0/T=1 APDU framing, EMV timing enforcement, and hardware-managed card activation/deactivation - enabling direct connection between a host PC and contact Smart Cards without external microcontroller intervention. The SEC1110-A5-02-TR is purpose-built for certified reader applications where reliability and standards compliance are critical.
Does the SEC1110-A5-02-TR support UART or SPI host interfaces?
No, the SEC1110-A5-02-TR supports USB host interface only - it does not include UART or SPI peripheral blocks. This is confirmed by the product identification table in DS00001561E, which explicitly lists SEC1110-A5-02 with "USB" under Host I/F and "1" under Smart Card I/F. In contrast, SEC1210 variants add UART and SPI capabilities. Attempting to use UART/SPI functionality on the SEC1110-A5-02-TR will fail because those peripherals are absent from its silicon implementation.
What Smart Card voltage classes does the SEC1110-A5-02-TR support?
The SEC1110-A5-02-TR supports Class A (5.0V), Class B (3.0V), and Class C (1.8V) Smart Cards via its programmable SC1_VCC output, which dynamically selects the appropriate voltage based on card detection and ATR analysis. The internal regulator ensures correct voltage delivery to SC1_RST_N, SC1_CLK, SC1_IO, SC1_C4, and SC1_C8 pins. An internal 4.8V comparator disables Class A support if VDD5 falls below threshold - a hardware safeguard preventing unreliable 5V card operation.
How does the SEC1110-A5-02-TR handle Smart Card removal events?
The SEC1110-A5-02-TR performs automatic, hardware-enforced Smart Card deactivation upon removal - including proper sequencing of VCC ramp-down, clock stop, and I/O release - independent of software execution state. This is triggered by the SC1_PRSNT_N signal and occurs even if the CPU is halted or the system clock is stopped, thanks to asynchronous Wake-On-Event circuitry. The SEC1110-A5-02-TR also generates an interrupt to notify firmware, ensuring both safety-critical compliance and application-level awareness.
Is an external crystal required for SEC1110-A5-02-TR operation?
No, the SEC1110-A5-02-TR features a self-clocking internal oscillator and requires no external crystal or resonator. It generates all necessary clocks - including the 48 MHz USB clock and Smart Card ETU timing - from this integrated oscillator. This eliminates BOM cost, PCB area, and layout sensitivity associated with external timing components, while maintaining sufficient accuracy for USB Full-Speed and ISO/IEC 7816 timing requirements. The SEC1110-A5-02-TR is fully functional with only VDD5, VDD33, and decoupling capacitors.
SEC1110-A5-02-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-A5-02-TR FAQ
1.How can I place an order for SEC1110-A5-02-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for SEC1110-A5-02-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-A5-02-TR reliable?
The price and inventory of SEC1110-A5-02-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-A5-02-TR is usually 5 days.
3.What payment methods are accepted for SEC1110-A5-02-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SEC1110-A5-02-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SEC1110-A5-02-TR?
SEC1110-A5-02-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SEC1110-A5-02-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-A5-02-TR?
For technical support, including SEC1110-A5-02-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SEC1110-A5-02-TR requirements.
6.How does Aetrix verify that SEC1110-A5-02-TR is sourced from the original manufacturer or authorized distributors?
All SEC1110-A5-02-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-A5-02-TR meets industry standards.
7.What is the process for return or replacement of SEC1110-A5-02-TR?
All SEC1110-A5-02-TR units undergo pre-shipment inspection (PSI). If there is an issue with SEC1110-A5-02-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-A5-02-TR part is unused and in its original packaging.
Return procedure for SEC1110-A5-02-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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