Microchip Technology SEC1210I-CN-02-TR

Overview

SEC1210I-CN-02-TR 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 programmable card voltage (1.8V/3.0V/5.0V), full T=0/T=1 protocol support, 261-byte full-packet FIFO per interface, and operates from 3.6V–5.5V supply. It is used in dual-interface smart card readers for financial terminals and secure authentication devices.

For engineers reviewing the SEC1210I-CN-02-TR datasheet, SEC1210I-CN-02-TR pinout, SEC1210I-CN-02-TR application, or SEC1210I-CN-02-TR equivalent, key selection criteria include dual Smart Card interface count, EMV 4.2/4.3 compliance, integrated OTP ROM (16 KB), RAM (1.5 KB), and QFN-24 package with thermal slug - all confirmed for this exact variant.

Technical Context

The SEC1210I-CN-02-TR implements a hardened 8051 microcontroller core running at up to 9.6 MHz, with three 16-bit timers, watchdog, JTAG debug, and OTP ROM (16 KB)/RAM (1.5 KB). Its Smart Card subsystem includes independent protocol timers (Guard, Timeout, CWT), hardware-managed cold/warm resets, automatic deactivation on card removal, and ESD protection per JESD22-A114D/A115A on all card pins.

The USB subsystem integrates a full-speed PHY with internal 1.5 kΩ pull-up on D+, series termination on DP/DM, and a device controller supporting five programmable bulk/interrupt endpoints (8/16/32/64 byte buffers) plus control endpoint 0. The UART supports standard PC baud rates up to 115.2 kbps and non-PC 3 Mbps, while SPI1 operates as a host at ≤12 MHz.

Key Specifications

Pinout & Package

SEC1210I-CN-02-TR is housed in a 24-pin QFN package (4 mm × 4 mm, 0.5 mm pitch) with exposed thermal slug (VSS) requiring connection to ground plane for thermal and EMI performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SEC1210-CN-02, the SEC1210I-CN-02-TR adds industrial temperature qualification and tape-and-reel packaging (TR suffix), while ST8008B offers lower integration but higher Flash reprogrammability - making SEC1210I-CN-02-TR optimal for ruggedized dual-card deployments requiring zero firmware modification.

Availability

SEC1210I-CN-02-TR is available at Aetrix Electronics and suitable for financial payment terminals, secure multi-application readers, and industrial authentication modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for SEC1210I-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

Microchip Technology Inc. is a leading provider of microcontrollers, analog components, and security solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.

The SEC1210 product line delivers certified Smart Card bridge functionality targeting EMV-compliant financial terminals, government ID systems, and secure access infrastructure - emphasizing hardware-enforced protocol compliance and dual-interface isolation.

FAQ

What is the operating temperature range of the SEC1210I-CN-02-TR?

The SEC1210I-CN-02-TR is rated for industrial operation from –40°C to +85°C. This specification is validated across all Smart Card, USB, UART, and SPI functions per DS00001561E. The "I" suffix explicitly denotes industrial temperature grade, distinguishing it from commercial variants like SEC1210-CN-02. Thermal performance relies on proper PCB thermal slug connection to VSS.

Does the SEC1210I-CN-02-TR support both T=0 and T=1 Smart Card protocols?

Yes, the SEC1210I-CN-02-TR fully supports both T=0 and T=1 protocols per ISO/IEC 7816-3 and EMV 4.2/4.3. It includes dedicated hardware state machines for T=0 parsing, internal procedure byte filtering, automatic character repetition for parity error recovery, and independent protocol timers (Guard, Timeout, CWT) - all confirmed in the SEC1210I-CN-02-TR datasheet sections 10.0 and 1.1.

Can the SEC1210I-CN-02-TR operate without an external crystal?

Yes, the SEC1210I-CN-02-TR uses a self-clocking internal oscillator and requires no external crystal. This is explicitly stated in the General Features section (DS00001561E, page 1) and verified in Section 15.0 (Clock and Reset). The oscillator enables immediate operation after power-up and eliminates BOM cost and layout area associated with crystal circuits.

How many Smart Card interfaces does the SEC1210I-CN-02-TR provide?

The SEC1210I-CN-02-TR provides two independent ISO/IEC 7816-compliant Smart Card interfaces (SC1 and SC2), each with dedicated VCC, RST_N, CLK, IO, PRSNT_N, C4, and C8 pins. This dual-interface capability is confirmed in the Product Identification System table (DS00001561E, page 2) and distinguishes SEC1210I-CN-02-TR from the single-interface SEC1110 family.

What host interfaces are supported by the SEC1210I-CN-02-TR?

The SEC1210I-CN-02-TR supports three host interfaces: USB 2.0 Full-Speed (12 Mbps), UART (with standard PC and 3 Mbps rates), and SPI host (≤12 MHz). Per DS00001561E, Section 1.0 and Figure 2-2, these interfaces are mutually exclusive - only one may be active at a time - and share no signal contention due to internal routing isolation.