Microchip Technology SEC1210-CN-02-TR

Overview

SEC1210-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 16 KB OTP ROM, 1.5 KB RAM, programmable Smart Card clock (1.8V/3.0V/5.0V), and full T=0/T=1 protocol support - deployed in secure USB dual-Smart-Card readers and EMV-compliant payment terminals.

For engineers reviewing the SEC1210-CN-02-TR datasheet, SEC1210-CN-02-TR pinout, SEC1210-CN-02-TR application, or SEC1210-CN-02-TR equivalent, key selection criteria include dual-card ISO7816 timing compliance (EMV 4.2/4.3), USB device controller buffer configuration (5 programmable endpoints), self-clocking oscillator operation (no external crystal), and QFN-24 package pin mapping for SC2_VCC/SC2_RST_N/SC2_IO/SC2_CLK/SC2_PRSNT_N signal routing.

Technical Context

The SEC1210-CN-02-TR implements a dedicated Smart Card subsystem with hardware-enforced EMV timing (Guard, CWT, Timeout timers), automatic card deactivation on removal, and full-packet 261-byte FIFOs per interface - eliminating software intervention between transmit/receive phases. Its 8051 core runs at up to 9.6 MHz with reduced instruction cycle time (≈9× standard 80C51) and integrates JTAG debug, watchdog timer, and three 16-bit timers.

USB functionality uses an integrated FS PHY with 1.5 kΩ D+ pull-up and series termination, paired with a USB Device Controller supporting control (8/16/32/64 byte) and five bulk/interrupt endpoint buffers. The SPI1 interface operates as a host at ≤12 MHz, while the UART supports standard PC baud rates plus 3 Mbaud high-speed mode - both multiplexed on the same QFN-24 pins as SPI signals.

Key Specifications

Pinout & Package

SEC1210-CN-02-TR is housed in a 24-pin QFN package (4 mm × 4 mm, 0.5 mm pitch) with exposed thermal slug (VSS). All power and ground connections require proper decoupling: 1 µF capacitor on VDD33 and VDD5, and direct connection of thermal slug to system ground.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SEC1210-CN-02 and SEC1110-A5-02-TR, the SEC1210-CN-02-TR uniquely combines dual Smart Card support, SPI host capability, and production-grade tape-and-reel packaging - making it the only option for high-volume, dual-slot, industrial-grade secure reader designs requiring MSL3 compliance and automated assembly.

Availability

SEC1210-CN-02-TR is available at Aetrix Electronics and suitable for EMV payment terminals, secure dual-card readers, and USB-based Smart Card KVM switches requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for SEC1210-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 global semiconductor company specializing in microcontrollers, analog devices, and security ICs - serving automotive, industrial, communications, and consumer markets since 1989.

The SEC1210 product line delivers certified Smart Card bridge solutions targeting EMV-compliant payment infrastructure, secure identity systems, and trusted peripheral interfaces - emphasizing hardware-enforced security, standards compliance, and integration density.

FAQ

What is the primary function of the SEC1210-CN-02-TR in a Smart Card system?

The SEC1210-CN-02-TR serves as a dual Smart Card bridge IC that connects two ISO/IEC 7816-compliant Smart Cards to a host system via USB, UART, or SPI. It integrates an enhanced 8051 core, dual Smart Card interfaces with hardware EMV timing enforcement, and on-chip regulators - enabling secure, standards-compliant card communication without external support circuitry. The SEC1210-CN-02-TR handles all low-level protocol details including T=0/T=1 parsing, ATR generation, and automatic card deactivation.

Does the SEC1210-CN-02-TR require an external crystal or oscillator?

No, the SEC1210-CN-02-TR features a self-clocking internal 48 MHz oscillator - eliminating the need for external crystals, resonators, or clock sources. This reduces component count, PCB area, and design complexity while maintaining timing accuracy sufficient for USB Full-Speed and ISO/IEC 7816 operation. The SEC1210-CN-02-TR derives all internal clocks (including Smart Card clock and USB bit timing) from this integrated oscillator.

How does the SEC1210-CN-02-TR handle Smart Card voltage selection for different card classes?

The SEC1210-CN-02-TR provides programmable Smart Card power outputs (SC1_VCC and SC2_VCC) capable of delivering 1.8 V, 3.0 V, or 5.0 V - automatically configured per card class (A/B/C/AB) via register control. Each output includes current limiting and over-current detection with interrupt reporting. The SEC1210-CN-02-TR ensures all associated I/O pins (RST, CLK, IO, C4, C8) operate at the same voltage level as the selected VCC, maintaining ISO/IEC 7816 electrical compliance.

Can the SEC1210-CN-02-TR operate in both USB and UART modes simultaneously?

No, the SEC1210-CN-02-TR supports USB or UART host connectivity - not both concurrently. Mode selection is determined by configuration bits set during initialization; the USB and UART peripherals share internal resources and cannot be active at the same time. The SEC1210-CN-02-TR also supports SPI host mode as a third independent interface option - selectable instead of UART or USB.

What packaging and environmental specifications apply to the SEC1210-CN-02-TR?

The SEC1210-CN-02-TR is supplied in a 24-pin QFN package (4 mm × 4 mm, 0.5 mm pitch) with exposed thermal slug, rated for industrial temperature range (−40°C to +85°C). It is packaged in tape-and-reel format (TR suffix) compliant with MSL3 moisture sensitivity requirements - qualified for standard SMT reflow processes. The SEC1210-CN-02-TR meets JESD22-A114D and JESD22-A115A ESD standards on Smart Card pins.