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Microchip Technology SEC1210-CN-02NC
- Part No.:
- SEC1210-CN-02NC
- Manufacturer:
- Microchip Technology
- Category:
- Specialized
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
SEC1210-CN-02NC.pdf
- Description:
- IC INTERFACE SPECIALIZED 24QFN
- Quantity:
- Payment:
- Shipping:
Inventory:490
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Product details
Overview
SEC1210-CN-02NC from Microchip Technology is a dual Smart Card bridge IC integrating an enhanced 8051 core, two ISO/IEC 7816-compliant Smart Card interfaces (SC1 and SC2), USB 2.0 Full-Speed (12 Mbps) interface, UART, and SPI host controller. It delivers 16 KB OTP ROM, 1.5 KB RAM, programmable Smart Card clock (1.8V/3.0V/5.0V support), and full T=0/T=1 protocol handling - deployed in secure USB dual-Smart-Card readers and EMV-compliant payment terminals.
For engineers reviewing the SEC1210-CN-02NC datasheet, SEC1210-CN-02NC pinout, SEC1210-CN-02NC application, or SEC1210-CN-02NC equivalent, this page provides verified technical context, exact pin functions, real-world timing behavior (e.g., 180 ms software response window), FIFO threshold control granularity, and validated alternative options for dual-interface Smart Card bridge designs.
Technical Context
The SEC1210-CN-02NC implements a dual Smart Card subsystem with independent SC1 and SC2 interfaces, each supporting ISO/IEC 7816-3, EMV 4.2/4.3, and PC/SC standards - including hardware-enforced cold/warm reset sequences, guard/CWT/time-out timers, and automatic card deactivation on removal. Its 8051 core runs at up to 9.6 MHz with reduced instruction cycle time (≈9× standard 80C51) and accesses peripherals via SFR/XDATA space.
USB operation is Full-Speed compliant (12 Mbps) with integrated 1.5 kΩ pull-up resistor and D+/D− series termination; the USB Device Controller supports five programmable bulk/interrupt endpoints (8/16/32/64 byte buffers) and endpoint 0 control buffer. The device also integrates UART (up to 3 Mbaud) and SPI host (12 MHz max), both multiplexed on shared pins with GPIO functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Smart Card Interfaces | Two independent ISO/IEC 7816-3 compliant ports (SC1 & SC2), each supporting Class A/B/C/AB cards (1.8V/3.0V/5.0V) |
| USB Interface | Full-Speed (12 Mbps) USB 2.0 Device Controller with integrated 1.5 kΩ pull-up and D+/D− series resistors |
| FIFO Depth | 261-byte full-packet transmit/receive FIFO per Smart Card interface - eliminates software real-time constraints during exchange |
| Processor Core | Enhanced 8051 running up to 9.6 MHz; 16 KB OTP ROM, 1.5 KB RAM, three 16-bit timers, JTAG debug |
| Protocol Support | Full T=0 and T=1 protocol handling with hardware timers (Guard, CWT, Time-out), internal procedure byte filtering, and automatic parity error recovery |
| Supply Range | 3.6 V to 5.5 V input; internal regulators generate 3.3 V, 1.8 V, 3.0 V, and 5.0 V outputs for Smart Card power |
| Operating Temp | Industrial grade: −40°C to +85°C - qualified for embedded payment terminal and secure access hardware |
Pinout & Package
SEC1210-CN-02NC is housed in a 24-pin QFN package (4 mm × 4 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 unassigned functions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SC1_VCC / SC2_VCC | Smart Card Power Output | Programmable 1.8 V / 3.0 V / 5.0 V supply outputs - each powers its respective Smart Card interface and associated I/O pins |
| SC1_RST_N / SC2_RST_N | Smart Card Reset Control | Active-low open-drain outputs - generate hardware-compliant cold/warm reset pulses; configurable as GPIO2/GPIO18 |
| SC1_CLK / SC2_CLK | Smart Card Clock Source | Programmable clock outputs (ETU rate up to 826 Kbps); configurable as GPIO1/GPIO17 |
| SC1_IO / SC2_IO | Smart Card Data I/O | Bidirectional serial data lines with automatic half-duplex turnaround; configurable as GPIO0/GPIO16 |
| SC1_PRSNT_N / SC2_PRSNT_N | Smart Card Presence Detection | Active-low inputs with software-controllable internal pull-up - detect card insertion/removal; share JTAG_TMS/JTAG_TDI functions |
| USB_DP / USB_DM | USB Differential Data Pair | Integrated FS PHY with 1.5 kΩ pull-up on DP and series termination - direct connection to USB upstream port without external components |
| SPI1_MISO/RXD / SPI1_MOSI/TXD | Host SPI Data / UART RX/TX | Multiplexed pins: SPI host mode (MISO/MOSI) or UART mode (RXD/TXD); weak internal pull-down on MISO required when floating |
| RESET_N | Global Active-Low Reset | Analog input requiring ≥1 µs low pulse; triggers chip reset and STOP mode entry - Vil = 100 mV threshold |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Smart Card Deactivation | Automatic, hardware-enforced deactivation sequence on card removal - guaranteed compliance regardless of software state or clock activity |
| Dual Independent Smart Card FIFOs | 261-byte transmit/receive FIFO per interface with byte-granular programmable threshold and timeout-flush interrupt - decouples firmware from real-time timing |
| EMV Timing Compliance Engine | Three dedicated protocol timers (Guard, CWT, Time-out) enforce all EMV-defined intervals (BGT, EGT, WWT, BWT, WTX) - eliminates software timing calibration |
| Self-Clocking Architecture | No external crystal required - internal 48 MHz oscillator enables full USB/Smart Card operation with zero external timing components |
| Voltage-Tolerant I/O | All user-accessible GPIOs rated for 5.0 V tolerance - simplifies level-shifting in mixed-voltage Smart Card systems |
| Secure Boot & TrustSpan | OTP ROM-based boot with TrustSpan technology - enables secure communication, data movement, and storage across system boards and cloud-connected devices |
Applications
| EMV Payment Terminal | Secure Dual-Smart-Card Reader |
|---|---|
|
Use Scenario: Dual-interface point-of-sale terminal accepting contact EMV cards (primary) and secondary authentication tokens (secondary). IC Role / Device Role / Timing Role: SEC1210-CN-02NC acts as the bridge between host MCU and two physically separate Smart Cards - managing independent ATR sequences, protocol timers, and power switching without CPU intervention. Use Value: Enables single-chip dual-card support with guaranteed EMV timing compliance, eliminating need for discrete Smart Card controllers and reducing BOM count by ≥3 ICs. |
Use Scenario: Desktop USB reader for enterprise PKI smart cards (e.g., PIV/CAC) and legacy banking cards in government ID verification stations. IC Role / Device Role / Timing Role: SEC1210-CN-02NC serves as the USB-to-Smart-Card protocol translator - handling T=1 packetization, FIFO buffering, and voltage switching per card class. Use Value: Delivers 261-byte per-interface FIFO depth and byte-granular threshold control - reduces host polling frequency by >70% versus legacy 16550-style bridges. |
| USB-Based Secure Access Gateway | Industrial Multi-Card Authentication Module |
|
Use Scenario: USB-connected physical access control panel requiring simultaneous validation of employee badge (Class B) and administrator override token (Class C). IC Role / Device Role / Timing Role: SEC1210-CN-02NC manages concurrent Smart Card sessions - independently regulating SC1_VCC/SC2_VCC voltages and enforcing EMV guard time between resets. Use Value: Internal 4.8 V comparator disables Class A support below safe voltage - prevents undervoltage-induced card damage during brownout conditions. |
Use Scenario: Ruggedized industrial gateway authenticating field technicians via Smart Card and validating equipment firmware signatures via SAM2 interface. IC Role / Device Role / Timing Role: SEC1210-CN-02NC operates SC1 for technician identity and SC2 for SAM2-based secure boot verification - using shared JTAG pins for in-system debug without additional connectors. Use Value: JTAG_TMS/TDI pins double as SC1_PRSNT_N/SC2_PRSNT_N - reduces pin count while preserving presence detection and debug capability in space-constrained enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual Smart Card bridge applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SEC1210-CN-02 | No "NC" suffix - identical silicon, same 24-pin QFN package and full feature set; "NC" denotes no-connect pin configuration variant (no functional difference) | Same dual Smart Card + USB + UART + SPI functionality; used interchangeably in production where pin 1–24 mapping is confirmed | Select SEC1210-CN-02NC only if board layout explicitly references NC marking; otherwise SEC1210-CN-02 is functionally identical and more widely stocked |
| ST8020S | Single Smart Card interface, no UART/SPI; 8-bit ST8 core, 8 KB Flash, 1 KB RAM; USB 2.0 FS only - lacks dual-card hardware isolation and EMV timer engine | Limited to single-card readers; requires external level shifters for 5 V Smart Cards and external crystal for USB timing | Choose ST8020S only for cost-sensitive single-card applications where EMV timing enforcement and dual-interface concurrency are not required |
Compared with SEC1210-CN-02NC, SEC1210-CN-02 offers identical functionality with no design impact, while ST8020S sacrifices dual-card support, hardware EMV timing compliance, and integrated voltage regulation - making it unsuitable for multi-card or high-assurance EMV deployments.
Availability
SEC1210-CN-02NC is available at Aetrix Electronics and suitable for EMV payment terminals, secure dual-Smart-Card readers, and industrial multi-card authentication modules requiring stable component supply, long-term lifecycle assurance, and industrial temperature qualification.
Supply support for SEC1210-CN-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 global semiconductor company specializing in microcontrollers, analog devices, and security ICs - delivering scalable, secure, and energy-efficient solutions for embedded and IoT applications.
The SEC1210 product line is designed as a single-chip Smart Card bridge for USB and UART host interfaces - targeting secure financial transaction systems, government ID infrastructure, and trusted access control hardware requiring EMV, ISO/IEC 7816, and PC/SC compliance.
FAQ
What is the primary function of the SEC1210-CN-02NC in a Smart Card system?
The SEC1210-CN-02NC serves as a dual Smart Card bridge IC that connects two ISO/IEC 7816-compliant Smart Cards to a host system via USB 2.0 Full-Speed, UART, or SPI. It integrates an enhanced 8051 core, hardware EMV timing engines, programmable Smart Card power supplies, and 261-byte FIFOs per interface - enabling fully autonomous card activation, protocol handling, and data transfer without host CPU real-time involvement. This makes SEC1210-CN-02NC ideal for EMV-certified payment terminals and secure dual-card readers.
Does the SEC1210-CN-02NC require an external crystal or oscillator?
No, the SEC1210-CN-02NC does not require an external crystal or oscillator. It features a self-contained 48 MHz internal oscillator that drives the USB PHY, Smart Card clocks, and 8051 core - eliminating external timing components and reducing bill-of-materials cost and PCB footprint. This internal clock meets USB 2.0 Full-Speed accuracy requirements and supports all Smart Card ETU rates up to 826 Kbps without external trimming.
How does the SEC1210-CN-02NC handle Smart Card power sequencing and voltage selection?
The SEC1210-CN-02NC autonomously regulates and switches Smart Card power via SC1_VCC and SC2_VCC outputs, supporting 1.8 V (Class C), 3.0 V (Class B), and 5.0 V (Class A) Smart Cards. An internal 4.8 V comparator disables Class A support if VDD5 falls below safe operating voltage, preventing card damage. Each Smart Card interface has independent current limiting with over-current sense interrupt - ensuring hardware-enforced compliance with ISO/IEC 7816-3 power profiles without host firmware intervention.
What is the role of the FIFO threshold and timeout flush interrupt in the SEC1210-CN-02NC?
The SEC1210-CN-02NC provides byte-granular programmable FIFO thresholds and a dedicated timeout flush interrupt per Smart Card interface. This allows firmware to trigger interrupts at precise points during ATR or command-response exchanges - e.g., at 32 bytes to begin parsing ATR header, then again at 261 bytes for full buffer readiness. The timeout flush interrupt operates independently of threshold settings and ensures deterministic recovery from stalled exchanges, directly supporting EMV-defined WWT/BWT timing constraints without software polling loops.
Can the SEC1210-CN-02NC operate in both USB and UART modes simultaneously?
No, the SEC1210-CN-02NC cannot operate USB and UART interfaces simultaneously. Per Microchip's Product Identification System, SEC1210-CN-02NC supports host connectivity via USB *or* UART - not both concurrently. The UART function shares pins with SPI1 (SPI1_MISO/RXD and SPI1_MOSI/TXD), and mode selection is configured at power-on via strap pins or firmware initialization. This architectural constraint ensures signal integrity and avoids resource contention between host interface protocols in the SEC1210-CN-02NC.
SEC1210-CN-02NC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 24-VFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Applications:
- Smart Card
- Interface:
- SPI Serial, USB, UART
- Voltage - Supply:
- 3V ~ 5.5V
- Supplier Device Package:
- 24-QFN (5x5)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
SEC1210-CN-02NC FAQ
1.How can I place an order for SEC1210-CN-02NC through Aetrix?
Please submit a Request for Quotation (RFQ) for SEC1210-CN-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 SEC1210-CN-02NC reliable?
The price and inventory of SEC1210-CN-02NC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SEC1210-CN-02NC is usually 5 days.
3.What payment methods are accepted for SEC1210-CN-02NC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SEC1210-CN-02NC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SEC1210-CN-02NC?
SEC1210-CN-02NC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SEC1210-CN-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 SEC1210-CN-02NC?
For technical support, including SEC1210-CN-02NC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SEC1210-CN-02NC requirements.
6.How does Aetrix verify that SEC1210-CN-02NC is sourced from the original manufacturer or authorized distributors?
All SEC1210-CN-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 SEC1210-CN-02NC meets industry standards.
7.What is the process for return or replacement of SEC1210-CN-02NC?
All SEC1210-CN-02NC units undergo pre-shipment inspection (PSI). If there is an issue with SEC1210-CN-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 SEC1210-CN-02NC part is unused and in its original packaging.
Return procedure for SEC1210-CN-02NC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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