Microchip Technology SEC1200-CN-02-TR

Overview

SEC1200-CN-02-TR from SMSC is a dual-interface smart card bridge IC integrating full-speed USB 2.0, SPI, and UART interfaces with an enhanced 8051 microcontroller. It supports two ISO/IEC 7816-compliant smart card slots (Class A/B/C/AB), delivers up to 826 Kbps ETU rate, features 16 KB OTP ROM and 1.5 KB RAM, and operates from 3.0–5.5 V - enabling secure, embedded smart card readers for financial terminals and identity systems.

For engineers reviewing the SEC1200-CN-02-TR datasheet, SEC1200-CN-02-TR pinout, SEC1200-CN-02-TR application, or SEC1200-CN-02-TR equivalent, key selection considerations include dual smart card support, EMV 4.2 timing compliance, programmable FIFO thresholds, self-clocking oscillator (no external crystal), and 5.0 V-tolerant I/O for direct interfacing with legacy host controllers.

Technical Context

The SEC1200-CN-02-TR implements a hardened 8051 core running at up to 16 MHz, with three 16-bit timers, JTAG debug, and on-chip power management. Its Smart Card interface includes dedicated protocol timers (Guard, CWT, Timeout) and hardware-managed activation/deactivation sequences compliant with EMV 4.2.

USB functionality uses an integrated full-speed PHY and device controller with five configurable endpoints (bulk/interrupt), while SPI supports master/slave modes at ≤12 MHz and UART provides standard PC baud rates plus 1 Mbaud. All peripherals are memory-mapped via SFR/XDATA space for deterministic register access.

Key Specifications

Pinout & Package

SEC1200-CN-02-TR is housed in a 24-pin QFN package (5 mm × 5 mm body, 0.8 mm height, 0.4 mm pitch) with exposed thermal pad. Pinout is defined per Figure 5 of SMSC SEC1100/SEC1200 Revision 1.0 (12-08-11).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar smart card bridge applications.

Compared with SEC1202-HZE-02-TR, SEC1200-CN-02-TR saves 24 pins and 30% board area while retaining identical dual smart card, USB, and UART functionality; versus ACS ACR39U-S1, it enables full firmware customization and multi-interface routing but requires complete driver and security stack development.

Availability

SEC1200-CN-02-TR is available at Aetrix Electronics and suitable for financial point-of-sale terminals, government ID readers, and secure access control panels requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.

Supply support for SEC1200-CN-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

SMSC (Standard Microsystems Corporation) was a fabless semiconductor company specializing in connectivity, embedded control, and interface solutions before its acquisition by Microchip Technology in 2012.

The SEC1200 product line was designed specifically for secure, standards-compliant smart card bridge applications in financial, identity, and healthcare markets - integrating USB, SPI, UART, and dual ISO/IEC 7816 interfaces into a single programmable SoC.

FAQ

What is the maximum supported ETU rate for SEC1200-CN-02-TR?

The SEC1200-CN-02-TR supports programmable ETU rates up to 826 Kbps, enabling high-throughput smart card transactions while maintaining full ISO/IEC 7816 and EMV 4.2 compliance. This rate is achieved through hardware-based ETU generation independent of CPU load, ensuring deterministic timing even during concurrent USB or SPI transfers. The SEC1200-CN-02-TR's ETU engine supports both current and proposed rates defined in EMV specifications.

Does SEC1200-CN-02-TR require an external crystal oscillator?

No, the SEC1200-CN-02-TR integrates a self-clocking 48 MHz oscillator and requires no external crystal or resonator. This internal clock drives the 8051 core, USB PHY, and smart card interfaces, reducing bill-of-materials cost and PCB layout complexity. The oscillator is factory-trimmed for ±1.5% accuracy across temperature and voltage, meeting USB full-speed timing requirements without external components.

How does SEC1200-CN-02-TR handle smart card power management?

The SEC1200-CN-02-TR provides fully autonomous smart card power management via dedicated regulators generating 1.8 V, 3.0 V, and 5.0 V outputs per slot (SC1VCC/SC2VCC). It includes hardware-enforced activation/deactivation sequences, over-current detection with interrupt, and synchronous card support - all compliant with EMV timing constraints. The SEC1200-CN-02-TR also disables Class A card support if VDD50 falls below 4.8 V, using an internal comparator.

Is SEC1200-CN-02-TR compatible with USB CCID class drivers?

Yes, the SEC1200-CN-02-TR implements a USB full-speed device controller configured to support the USB CCID (Chip/Smart Card Interface Device) class specification. Its five programmable endpoints and memory-mapped register interface allow firmware to implement standard CCID command/response structures, enabling plug-and-play compatibility with Windows Smart Card Resource Manager and Linux pcscd without custom driver development.

What smart card protocols and classes does SEC1200-CN-02-TR support?

The SEC1200-CN-02-TR supports both T=0 and T=1 protocols per ISO/IEC 7816-3 and is fully compliant with EMV 4.2 timing parameters. It handles Class A (5.0 V), Class B (3.0 V), Class C (1.8 V), and Class AB (dual-voltage) smart cards via independent voltage regulation per slot. Protocol timers (Guard Time, CWT, BWT), automatic parity recovery, and internal procedure byte filtering are implemented in hardware for guaranteed compliance.