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NXP Semiconductors A7101CHTK2/T0BC2VJ
- Part No.:
- A7101CHTK2/T0BC2VJ
- Manufacturer:
- NXP Semiconductors
- Category:
- Application Specific Microcontrollers
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
A7101CHTK2/T0BC2VJ.pdf
- Description:
- SECURE AUTHENTICATION
- Quantity:
- Payment:
- Shipping:
Inventory:611
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Product details
Overview
A7101CHTK2/T0BC2VJ from NXP Semiconductors is a Plug & Trust Secure Element IC implementing Java Card OS and preloaded IoT security applet, providing chip-level root of trust via ECC NIST P-256 key pair storage (4×), ECDSA signature/verification, ECDH key agreement, 8×128-bit symmetric secrets, and 2×32-bit monotonic counters - deployed in secure cloud onboarding for IP cameras and home gateways.
For engineers reviewing the A7101CHTK2/T0BC2VJ datasheet, A7101CHTK2/T0BC2VJ pinout, A7101CHTK2/T0BC2VJ application, or A7101CHTK2/T0BC2VJ equivalent, this page delivers verified I²C interface behavior (400 kbit/s Fast-Mode, 7-bit address 0x48/0x49), HVSON8 package mapping, sleep/deep-sleep current specs (45–150 μA / 10 μA), EEPROM endurance (500k cycles), and real-world credential provisioning use cases.
Technical Context
The A7101CHTK2/T0BC2VJ operates autonomously using an integrated Java Card OS and fixed IoT applet, isolating all memory access to applet-defined functions - preventing host-side direct memory reads. Its security architecture includes hardware-enforced countermeasures against SPA/DPA, active shielding, glitch detection, and temperature/voltage sensors.
It implements Smartcard I²C (SCI²C) protocol over standard I²C physical layer, supporting ISO/IEC 7816-4 APDU mapping with default frame waiting time of 320 ms and configurable I²C addresses (0x90/0x92). Interface activation is determined by IF0/IF1 pin states at power-on-reset, enabling automatic mode selection without host configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Interface | I²C slave, Fast-Mode up to 400 kbit/s; SCI²C protocol with ISO/IEC 7816-4 APDU mapping |
| Cryptographic Engine | ECC NIST P-256 only; supports ECDSA sign/verify, ECDH/ECDH-E key agreement, HKDF SHA256 |
| Secure Storage | 4× ECC key pairs, 3× public keys, 8×128-bit symmetric secrets, 2×32-bit monotonic counters, 128×32-byte GP data segments |
| Memory Endurance | EEPROM: ≥500,000 write/erase cycles, ≥25 years data retention at +55°C |
| Power Modes | SLEEP mode: 45–150 μA typical @25°C; DEEP SLEEP: ≤10 μA with RST_N held low ≥500 μs |
| Operating Temp | −25°C to +85°C ambient (A7101 variant); validated for industrial/home gateway deployment |
| I²C Address | Default 7-bit addresses: 0x48 (8-bit 0x90) and optional 0x49 (8-bit 0x92), selected via IF1 pin |
Pinout & Package
HVSON8 package (SOT909-1), 4 × 4 × 0.85 mm body, thermal pad recommended to be grounded for thermal management. Pin 1 index located at top-left corner in transparent top view.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| I2C_SCL | I²C clock input | Active-low synchronous clock line; supports Fast-Mode (400 kHz); requires external pull-up |
| VSS | Ground reference | Primary ground connection; must be low-impedance for security sensor stability |
| IF0 | Interface activation control | High at power-on enables I²C interface; stable voltage required ≥500 μs after reset |
| n.c. | No connect | Internally unconnected; no routing or termination required |
| IF1 | I²C address selection | Determines 7-bit I²C address: logic high selects 0x49 (0x92), low selects 0x48 (0x90) |
| RST_N | Active-low reset input | Pull low ≥40 μs for normal reset; ≥500 μs to enter DEEP SLEEP mode |
| VCC | Supply voltage input | Supports dual-voltage operation: 1.62–1.98 V (1V8 mode) or 2.5–3.6 V (3V3 mode) |
| I2C_SDA | I²C bidirectional data line | Open-drain output with internal pull-down; requires external pull-up; supports SCI²C framing |
Key Features
| Feature | Design Value |
|---|---|
| Root-of-trust provisioning | Preloaded IoT applet enables zero-touch credential injection and secure channel (SCP03) setup without host firmware development |
| Side-channel resistance | Hardware + software SPA/DPA countermeasures licensed from Cryptography Research Inc., covering OS and crypto operations |
| Transport lock mechanism | Immutable module locking prevents unauthorized access during logistics; enforced via dedicated applet command |
| Secure key lifecycle | Keys can be frozen (OTP behavior), locked, or deleted - enforcing strict cryptographic state transitions per GP specification |
| Multi-platform integration | Host libraries available for i.MX/Kinetis MCUs and OpenSSL/Mbed TLS engines, abstracting SCI²C and APDU handling |
Applications
| IP Camera Authentication | Home Gateway Cloud Onboarding |
|---|---|
Use Scenario: Securing video stream integrity and device identity during AWS IoT Core registration. IC Role / Device Role / Timing Role: Performs ECDSA signature of device certificate request and verifies cloud-signed challenge responses. Use Value: Prevents cloning and man-in-the-middle attacks during first-boot provisioning; eliminates need for host-side crypto stack. |
Use Scenario: Enabling secure, automated enrollment of residential gateways into Azure IoT Hub with X.509 certificate chain validation. IC Role / Device Role / Timing Role: Stores root CA and device identity keys; executes HKDF-based key derivation for TLS session keys. Use Value: Reduces boot-time latency by offloading asymmetric crypto; ensures private keys never leave secure element boundary. |
| Industrial Sensor Node Integrity | Smart Appliance Anti-Counterfeiting |
Use Scenario: Guaranteeing firmware authenticity and sensor data origin in predictive maintenance networks. IC Role / Device Role / Timing Role: Signs sensor telemetry payloads using pre-provisioned ECC key pair; validates signed firmware updates. Use Value: Enables tamper-evident logging with verifiable timestamps; meets IEC 62443-3-3 SL2 requirements for secure boot. |
Use Scenario: Verifying OEM authenticity of connected washing machines and refrigerators during service technician diagnostics. IC Role / Device Role / Timing Role: Stores unique 18-byte chip ID and manufacturer-signed attestation certificate; responds to challenge-response queries. Use Value: Blocks counterfeit spare parts by binding hardware identity to cloud-managed entitlements and warranty status. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar secure element applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STSAFE-A110 | Supports I²C and SPI; lacks built-in Java Card OS; uses ST's proprietary secure runtime | Requires custom host driver integration; no out-of-box OpenSSL engine support | Preferred when SPI interface or lower-cost certification path (Common Criteria EAL5+) is prioritized |
| Infineon SLB9670 | TPM 2.0 compliant; larger footprint (QFN32); supports RSA-2048 and SHA-384 | Targets PC/server-class trusted platform modules; not optimized for battery-powered edge devices | Chosen for Windows IoT or Linux systems requiring full TPM 2.0 stack compatibility |
Compared with STSAFE-A110 and SLB9670, the A7101CHTK2/T0BC2VJ delivers faster design-in via plug-and-play host libraries and pre-certified IoT applet, while maintaining minimal power consumption (10 μA deep sleep) and compact HVSON8 footprint ideal for space-constrained embedded nodes.
Availability
A7101CHTK2/T0BC2VJ is available at Aetrix Electronics and suitable for IP camera authentication, home gateway cloud onboarding, and industrial sensor node integrity requiring stable component supply across automotive-grade temperature ranges and long-lifecycle deployments.
Supply support for A7101CHTK2/T0BC2VJ 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
NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with decades of expertise in smart card and secure element technology.
The A71CH product line was designed specifically for zero-touch, cloud-native IoT security - delivering hardened cryptographic services in ultra-small packages for resource-constrained edge devices.
FAQ
What is the default I²C address of the A7101CHTK2/T0BC2VJ and how is it selected?
The A7101CHTK2/T0BC2VJ defaults to 7-bit I²C address 0x48 (8-bit 0x90) when IF1 is low at power-on; setting IF1 high selects 0x49 (8-bit 0x92). This selection occurs automatically during startup and requires stable IF1 voltage for ≥500 μs after reset. The A7101CHTK2/T0BC2VJ does not support dynamic address reconfiguration during operation.
Does the A7101CHTK2/T0BC2VJ support both 1.8 V and 3.3 V supply modes, and what are the implications?
Yes, the A7101CHTK2/T0BC2VJ supports dual-voltage operation: 1.62–1.98 V (1V8 mode) and 2.5–3.6 V (3V3 mode). In 1V8 mode, typical active current drops to 2.45 mA (no coprocessor), enabling longer battery life in portable IoT nodes. The A7101CHTK2/T0BC2VJ maintains full cryptographic functionality and timing compliance across both modes.
How does the A7101CHTK2/T0BC2VJ implement side-channel attack protection?
The A7101CHTK2/T0BC2VJ integrates hardware-level SPA/DPA countermeasures licensed from Cryptography Research Inc., including randomized execution timing, masked arithmetic units, and active shielding. These protections cover both the Java Card OS and all cryptographic operations - ensuring that power analysis or electromagnetic leakage cannot extract private keys. The A7101CHTK2/T0BC2VJ documentation confirms coverage under the CRI license agreement.
Can the A7101CHTK2/T0BC2VJ be used for TLS mutual authentication in constrained devices?
Yes, the A7101CHTK2/T0BC2VJ supports TLS mutual authentication by securely storing device identity keys and performing ECDSA signing/verification and ECDH key agreement. Its preloaded IoT applet and OpenSSL/Mbed TLS engine integration enable seamless TLS handshake offload. The A7101CHTK2/T0BC2VJ has been validated in production deployments with AWS IoT Core and Azure IoT Hub using NIST P-256 certificates.
What is the purpose of the Transport Lock feature in the A7101CHTK2/T0BC2VJ?
The Transport Lock feature allows the A7101CHTK2/T0BC2VJ to be permanently locked during logistics to prevent unauthorized access or provisioning before device deployment. Once activated via dedicated applet command, all secure operations are disabled until unlocked by a manufacturer-specific key - ensuring end-to-end supply chain integrity. This function is implemented in the preloaded IoT applet and requires no host-side code modification.
A7101CHTK2/T0BC2VJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- A71CH
- Package/Case:
- 8-VDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Applications:
- Authentication
- Core Processor:
- MX51
- Program Memory Type:
- -
- Controller Series:
- -
- RAM Size:
- -
- Interface:
- I2C
- Number of I/O:
- -
- Voltage - Supply:
- 2.5V ~ 3.6V
- Operating Temperature:
- -25°C ~ 90°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-HVSON (4x4)
A7101CHTK2/T0BC2VJ FAQ
1.How can I place an order for A7101CHTK2/T0BC2VJ through Aetrix?
Please submit a Request for Quotation (RFQ) for A7101CHTK2/T0BC2VJ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for A7101CHTK2/T0BC2VJ reliable?
The price and inventory of A7101CHTK2/T0BC2VJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for A7101CHTK2/T0BC2VJ is usually 5 days.
3.What payment methods are accepted for A7101CHTK2/T0BC2VJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for A7101CHTK2/T0BC2VJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for A7101CHTK2/T0BC2VJ?
A7101CHTK2/T0BC2VJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your A7101CHTK2/T0BC2VJ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for A7101CHTK2/T0BC2VJ?
For technical support, including A7101CHTK2/T0BC2VJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your A7101CHTK2/T0BC2VJ requirements.
6.How does Aetrix verify that A7101CHTK2/T0BC2VJ is sourced from the original manufacturer or authorized distributors?
All A7101CHTK2/T0BC2VJ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that A7101CHTK2/T0BC2VJ meets industry standards.
7.What is the process for return or replacement of A7101CHTK2/T0BC2VJ?
All A7101CHTK2/T0BC2VJ units undergo pre-shipment inspection (PSI). If there is an issue with A7101CHTK2/T0BC2VJ, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The A7101CHTK2/T0BC2VJ part is unused and in its original packaging.
Return procedure for A7101CHTK2/T0BC2VJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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