A7101CHTK2/T0BC2VJ

Overview

The A7101CHTK2/T0BC2VJ is a secure element from the NXP A71CH family, designed to provide an IC-level root of trust for IoT applications. It features an integrated JavaCard operating system and an IoT security applet, supporting end-to-end security from chip to cloud. The device communicates via an I2C interface at Fast-Mode speeds up to 400 kbit/s. It operates within an ambient temperature range of -25 °C to +85 °C and is housed in an HVSON8 package (4x4 mm). Key cryptographic capabilities include ECC NIST P-256 key pair generation, ECDSA signature verification, ECDH key agreement, HMAC SHA256, and HKDF key derivation.

Feature Summary

• Integrated JavaCard OS with pre-installed IoT security applet for autonomous operation
• Supports ECC NIST P-256 operations including key generation, ECDSA, and ECDH
• Secure storage for 4 asymmetric key pairs, 3 public keys, 8 symmetric secrets, and 2 monotonic counters
• I2C interface using Smartcard I2C protocol with addresses 0x90/0x91 or 0x92/0x93

Applications

• Secure connection to public/private clouds and edge computing platforms
• Device-to-device authentication and proof of origin
• Connected industrial devices and sensor networks
• IP cameras and home gateways
• Home appliances requiring credential protection

Procurement Notes

Verify the specific suffix T0BC2VJ against the manufacturer's current ordering information to confirm silicon version and ROM code details. Confirm availability status as product lifecycles may change. Ensure compatibility with host systems supporting the required I2C voltage levels (1.8V or 3.3V) and the Smartcard I2C protocol encapsulation.

Selection Notes

Select this variant for applications requiring standard operational temperature (-25 °C to +85 °C). Choose the HVSON8 package for board space constraints where WLCSP is not suitable. Ensure the host MCU can support the I2C Fast-Mode interface and the specific SCI2C protocol commands defined in the data sheet. Consider power requirements, noting typical sleep currents of 40 μA and deep sleep currents of 10 μA.

Part Context

This component belongs to the A71CH Plug & Trust Secure Element family. The 'A7101' designation indicates the standard temperature grade variant. The 'CH' signifies the inclusion of the JavaCard OS and IoT applet. The 'TK2' denotes the HVSON8 package type. This part is distinct from the A7102 series which supports extended temperatures (-40 °C to +90 °C).

Replacement Considerations

The A7102CHTK2/T0BC2VJ is a pin-compatible alternative offering extended temperature range (-40 °C to +90 °C). Verify if the environmental requirements of the application necessitate the extended grade. Other A71CH variants with different package types (WLCSP) are not pin-compatible.