Microchip Technology AT88SC0808CRF-MY1

Overview

AT88SC0808CRF-MY1 from Microchip Technology (formerly Atmel) is a contactless 13.56 MHz CryptoRF EEPROM memory IC with 8 kilobits of user memory, ISO/IEC 14443-2 and -3 Type B compliance, integrated 82 pF tuning capacitor, and hardware-based 64-bit mutual authentication under ELVA license - deployed in secure RFID smart cards for access control and credentialing.

For engineers reviewing the AT88SC0808CRF-MY1 datasheet, AT88SC0808CRF-MY1 pinout, AT88SC0808CRF-MY1 application, or AT88SC0808CRF-MY1 equivalent, key selection criteria include RF interface compliance (Type B only), zone-level password/key access control, anti-tearing support, 100,000 write endurance, and −25°C to +85°C industrial temperature operation.

Technical Context

The AT88SC0808CRF-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 protocol), operating at 106 kbit/s half-duplex with 2-byte CRC_B error detection. It requires no external power source - energy is harvested from the reader's RF field.

Security architecture includes four programmable 64-bit crypto key sets, eight 24-bit password sets, per-zone access rights, tamper sensors, and optional anti-tearing via dual-write buffering. All security features are disabled at delivery and require personalization using the transport password $40 7F AB.

Key Specifications

Pinout & Package

AT88SC0808CRF-MY1 is supplied in the MY1 package - a 2-lead wafer-level chip-scale module with AC1 and AC2 terminals for direct connection to an external coil antenna. No VDD or VSS pins are present; power is harvested inductively from the RF field. The device contains an integrated 82 pF tuning capacitor between AC1 and AC2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT88SC0808CRF-MY1, the NT3H2211 offers broader NFC reader compatibility but weaker cryptographic assurance, while the SLE78CLX2000P delivers higher assurance and memory capacity at the cost of design complexity and supply chain constraints.

Availability

AT88SC0808CRF-MY1 is available at Aetrix Electronics and suitable for physical access control, secure transit ticketing, healthcare identity cards, and secure document authentication requiring stable component supply and long-term lifecycle support.

Supply support for AT88SC0808CRF-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 full support for the CryptoRF product family, including legacy documentation, firmware tools, and secure personalization guidance.

The AT88SC0808CRF-MY1 belongs to the CryptoRF family - purpose-built contactless secure memory ICs optimized for ISO/IEC 14443-B smart cards where cryptographic authentication, zone-level access control, and tamper resilience are required without an on-board microprocessor.

FAQ

What is the RF interface standard compliance of the AT88SC0808CRF-MY1?

The AT88SC0808CRF-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, though it tolerates exposure without lockup.

Does the AT88SC0808CRF-MY1 require an external power supply?

No, the AT88SC0808CRF-MY1 operates entirely from harvested RF energy - no battery or external VDD is needed. Power is extracted via the AC1/AC2 terminals connected to an external coil antenna, with regulation and rectification handled internally.

How is security initialized on the AT88SC0808CRF-MY1?

AT88SC0808CRF-MY1 ships with all security features disabled. Personalization requires presenting the transport password $40 7F AB to access configuration memory, then programming AFI, keys, passwords, and security fuses - after which selected fuses permanently lock portions of configuration memory as OTP.

What memory organization does the AT88SC0808CRF-MY1 use?

The AT88SC0808CRF-MY1 organizes memory into eight 128-byte user zones (8 kilobits total) and a 2-kilobit configuration zone. Each user zone supports independent byte/page/partial-page writes, self-timed write cycles, and configurable access rights defined in the configuration zone.

Is anti-tearing supported on the AT88SC0808CRF-MY1, and how does it function?

Yes, AT88SC0808CRF-MY1 supports optional anti-tearing. When enabled, writes first stage data to a buffer EEPROM location before committing to the target address. If power is lost mid-write, the device recovers the original data from the buffer at next power-up - ensuring atomicity for critical updates like fare balances or access logs.