Microchip Technology AT88SC3216CRF-MY1

Overview

AT88SC3216CRF-MY1 from Microchip Technology (formerly Atmel) is a contactless 13.56 MHz CryptoRF EEPROM memory IC optimized for secure RF smart cards and tamper-resistant data storage. It delivers 32 kilobits of user memory across 16 zones, ISO/IEC 14443-2 & -3 Type B compliance, 64-bit mutual authentication under ELVA license, and integrated 82 pF tuning capacitor - enabling single-coil antenna operation in access control and e-ID applications.

For engineers reviewing the AT88SC3216CRF-MY1 datasheet, AT88SC3216CRF-MY1 pinout, AT88SC3216CRF-MY1 application, or AT88SC3216CRF-MY1 equivalent, key selection criteria include RF protocol compatibility (Type B only), zone-level password/key access control, anti-tearing support, cryptographic checksum (MAC), and industrial temperature range (−25°C to +85°C).

Technical Context

The AT88SC3216CRF-MY1 implements a dedicated RF interface compliant exclusively with ISO/IEC 14443-2:2001 and -3:2001 Type B signaling, modulation, and anticollision (Slot-MARKER). It operates at 106 kbit/s half-duplex with 2-byte CRC_B error detection and draws power solely from the RF field - no battery or external supply required.

Security architecture includes four independent key sets, eight 24-bit password sets, per-zone access rights, tamper sensors, and optional anti-tearing via dual-write buffer recovery. Authentication and encryption modes are stateful and persist until DESELECT/IDLE or power loss.

Key Specifications

Pinout & Package

AT88SC3216CRF-MY1 is supplied in the MY1 wafer-level package - a bare die format (150 mm diameter, 6 mil thickness) intended for embedding into RFID inlays or laminated smart cards. It has two RF terminals: AC1 and AC2. No VDD, VSS, or digital I/O pins are present; power and communication occur entirely through the RF interface.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar contactless secure memory applications.

Compared with NT3H2211W0FHKH and SLE78CLX2040P, the AT88SC3216CRF-MY1 provides superior anti-tamper resilience via hardware-enforced anti-tearing and ELVA-licensed mutual authentication - making it optimal for high-assurance physical access and national ID where attack surface minimization is critical.

Availability

AT88SC3216CRF-MY1 is available at Aetrix Electronics and suitable for physical access control, e-passport issuance, and secure transit ticketing requiring stable component supply, wafer-level integration flexibility, and long-term lifecycle support.

Supply support for AT88SC3216CRF-MY1 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 acquired Atmel in 2016 and maintains its CryptoRF and CryptoMemory product lines for secure embedded applications.

The AT88SC3216CRF-MY1 belongs to the CryptoRF family - purpose-built for contactless smart cards needing robust cryptographic memory without an on-board microprocessor, targeting government ID, access control, and secure transit.

FAQ

What is the RF interface standard compliance of the AT88SC3216CRF-MY1?

The AT88SC3216CRF-MY1 is fully compliant with ISO/IEC 14443-2:2001 and ISO/IEC 14443-3:2001 for Type B only - including bit timing, signal modulation, and Slot-MARKER anticollision protocol. It does not support Type A signaling but tolerates exposure without lockup or damage.

Does the AT88SC3216CRF-MY1 require an external tuning capacitor?

No. The AT88SC3216CRF-MY1 integrates an 82 pF ±10% tuning capacitor between AC1 and AC2 terminals, eliminating the need for external capacitance and simplifying antenna design for card and inlay manufacturers.

How is security configured on the AT88SC3216CRF-MY1?

Security on the AT88SC3216CRF-MY1 is configured via its 2-kbit configuration memory, which stores Application Family Identifiers (AFI), anticollision polling responses, four key sets, eight 24-bit passwords, and per-zone access rights - all protected by the transport password $6078AF.

What is the memory organization of the AT88SC3216CRF-MY1?

The AT88SC3216CRF-MY1 contains 32 kilobits of user EEPROM organized as sixteen 256-byte zones (each 2 Kbit), plus a dedicated 2-kbit configuration zone. Each user zone supports byte/page/partial-page writes and self-timed write cycles.

Is anti-tearing supported on the AT88SC3216CRF-MY1?

Yes. The AT88SC3216CRF-MY1 supports optional hardware anti-tearing: during a write, data is first stored in a buffer zone before being committed to the target address. If power is lost mid-write, the device recovers the original data from the buffer at next power-up.