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NXP Semiconductors A7102CGTK2/T0B042J
- Part No.:
- A7102CGTK2/T0B042J
- Manufacturer:
- NXP Semiconductors
- Category:
- Application Specific Microcontrollers
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
A7102CGTK2/T0B042J.pdf
- Description:
- AU10TICS
- Quantity:
- Payment:
- Shipping:
Inventory:2,910
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Product details
Overview
A7102CGTK2/T0B042J from NXP Semiconductors is a Plug & Trust Secure Element IC implementing Java Card OS and preloaded IoT security applet, supporting ECC NIST P-256 key pairs, ECDSA signature/verification, ECDH key agreement, and 8×128-bit symmetric secret storage. It operates over I²C Fast-Mode (400 kbit/s), features −40 °C to +90 °C industrial temperature range, and delivers secure credential injection for root-of-trust in cloud-connected edge devices.
For engineers reviewing the A7102CGTK2/T0B042J datasheet, A7102CGTK2/T0B042J pinout, A7102CGTK2/T0B042J application, or A7102CGTK2/T0B042J equivalent, this page provides verified technical context, validated pin functions, confirmed cryptographic capabilities, package-specific layout guidance, and real-world deployment constraints - all derived from NXP's official A71CH Rev. 1.2 datasheet and ordering documentation.
Technical Context
The A7102CGTK2/T0B042J implements a dedicated MX51 security CPU with on-chip Java Card OS and fixed IoT applet, enforcing strict memory isolation via protected access control. Its Smartcard I²C (SCI²C) protocol layer maps ISO/IEC 7816-4 APDUs over SMBus-based I²C physical interface.
It supports dual-voltage operation (1.62–1.98 V or 2.5–3.6 V), two power-saving modes (SLEEP at ≤150 µA and DEEP SLEEP at ≤10 µA), and automatic interface mode detection based on IF0/IF1 pin states at power-on-reset. I²C slave address defaults to 0x90 (7-bit: 0x48) or 0x92 (7-bit: 0x49), configurable via IF1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Interface | I²C Fast-Mode slave, 400 kbit/s max; SCI²C protocol compliant with ISO/IEC 7816-4 mapping |
| Cryptographic Engine | ECC NIST P-256 only; 4 asymmetric key pairs, 3 public keys, 8×128-bit symmetric secrets, 2×32-bit monotonic counters |
| Operating Temperature | −40 °C to +90 °C ambient - validated for industrial-grade embedded deployments |
| Supply Voltage | Supports dual-rail: 1.62–1.98 V (1V8 mode) or 2.5–3.6 V (3V3 mode); no external regulator required |
| Power Consumption | ≤150 µA in SLEEP mode (Tamb = 25 °C); ≤10 µA in DEEP SLEEP with RST_N held low ≥500 µs |
| Memory Endurance | EEPROM: ≥500,000 write/erase cycles; ≥25 years data retention at +55 °C |
| Security Certification | SPA/DPA countermeasures licensed from Cryptography Research Inc.; active shielding, glitch detection, voltage/temp sensors |
Pinout & Package
HVSON8 (SOT909-1) package: 4 mm × 4 mm × 0.85 mm body, 8-terminal no-lead thermal-enhanced outline; center pad unconnected but recommended to be grounded for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| I2C_SCL | I²C clock input | Open-drain or push-pull compatible; requires external pull-up; defines timing for SCI²C frame synchronization |
| VSS | Ground reference | Primary return path for all internal circuits and I/O; must be low-impedance connection to system ground plane |
| IF0 | Interface activation control | High at power-on enables I²C interface; must remain stable ≥500 µs after POR for correct boot configuration |
| n.c. | No connect | Terminal 4 is internally unconnected; PCB trace may be omitted or used as thermal relief |
| IF1 | I²C address selection | Determines default slave address: logic high selects 0x92 (7-bit 0x49); logic low selects 0x90 (7-bit 0x48) |
| RST_N | Active-low reset input | Pulling low ≥40 µs exits SLEEP; ≥500 µs enters DEEP SLEEP; internal weak pull-down present |
| VCC | Power supply input | Accepts 1.62–1.98 V or 2.5–3.6 V; bypass capacitor (≥100 nF) required within 2 mm of pin |
| I2C_SDA | I²C bidirectional data line | Open-drain operation per SCI²C spec; supports ACK/NACK signaling and multi-master arbitration |
Key Features
| Feature | Design Value |
|---|---|
| Root-of-Trust Provisioning | Preloaded IoT applet enables zero-touch credential injection - eliminates post-manufacturing key programming steps |
| Hardware-Enforced Authentication | Systematic SCP03 secure channel support with AES128 keyset; transport lock prevents unauthorized provisioning |
| Side-Channel Resilience | Integrated SPA/DPA countermeasures licensed from Cryptography Research Inc., covering both hardware and firmware layers |
| Secure Key Lifecycle Management | Protected access controls prevent host-side read of private keys; freeze-on-write OTP behavior for credentials |
| Low-Power Edge Operation | Deep sleep current ≤10 µA enables battery-powered deployments with multi-year operational life |
Applications
| Secure Cloud Onboarding | Device Identity & Anti-Counterfeiting |
|---|---|
Use Scenario: Connecting constrained IoT sensors to AWS IoT Core or Azure IoT Hub with TLS mutual authentication. IC Role / Device Role / Timing Role: Secure Element performs ECDSA signature generation and certificate chain validation during TLS handshake. Use Value: Eliminates need for software-based key storage; prevents credential extraction via firmware dump or JTAG access. |
Use Scenario: Verifying authenticity of industrial control modules before firmware update execution. IC Role / Device Role / Timing Role: Stores immutable device identity (18-byte unique chip ID) and signed attestation certificates. Use Value: Enables cryptographic proof of origin using ECDSA signatures tied to hardware-bound keys. |
| Edge-to-Edge Authentication | Secure Firmware Provisioning |
Use Scenario: Mutual authentication between IP cameras and gateway controllers in smart building networks. IC Role / Device Role / Timing Role: Performs ECDH key agreement to establish session keys for encrypted video streaming. Use Value: Prevents man-in-the-middle attacks without relying on PKI infrastructure or centralized CA. |
Use Scenario: Securing over-the-air (OTA) firmware updates for home appliances using signed delta patches. IC Role / Device Role / Timing Role: Validates ECDSA signatures on firmware manifests before allowing flash write operations. Use Value: Ensures only cryptographically authorized firmware executes, blocking malicious payloads or rollback attacks. |
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 up to 1 MHz; includes additional AES-GCM acceleration; lacks built-in transport lock mechanism | Targeted at high-throughput payment terminals; less optimized for ultra-low-power sensor nodes | Choose when higher throughput or GCM-based authenticated encryption is required |
| Infineon SLB9670 | TPM 2.0 compliant; supports SHA-256, RSA-2048, and PCR registers; larger footprint (QFN32) | Designed for PC/laptop BIOS-level trust anchors; not optimized for resource-constrained MCU hosts | Choose when full TPM 2.0 compliance and platform-level attestation are mandatory |
Compared with STSAFE-A110 and SLB9670, the A7102CGTK2/T0B042J offers tighter integration with lightweight MCU platforms via minimal HVSON8 footprint, lower deep-sleep current (≤10 µA), and purpose-built IoT applet - making it optimal for battery-operated edge devices requiring fast, secure cloud onboarding without full TPM complexity.
Availability
A7102CGTK2/T0B042J is available at Aetrix Electronics and suitable for secure cloud connectivity, device identity management, and firmware integrity verification requiring stable component supply across industrial IoT, smart home, and connected infrastructure programs.
Supply support for A7102CGTK2/T0B042J 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 core expertise in embedded security and trusted execution environments.
The A71CH product line delivers plug-and-play secure elements designed specifically for rapid integration into resource-constrained edge devices needing chip-to-cloud security without custom firmware development.
FAQ
What is the operating temperature range of the A7102CGTK2/T0B042J?
The A7102CGTK2/T0B042J is rated for −40 °C to +90 °C ambient operation, matching the A7102 variant designation per NXP's naming convention. This extended range supports deployment in harsh industrial environments, outdoor gateways, and under-hood automotive edge nodes where thermal stability is critical. The specification is validated across all electrical and cryptographic functions per the A71CH Rev. 1.2 datasheet.
Does the A7102CGTK2/T0B042J support both 1.8 V and 3.3 V supply rails?
Yes, the A7102CGTK2/T0B042J supports dual-voltage operation: 1.62–1.98 V (1V8 mode) and 2.5–3.6 V (3V3 mode). It automatically detects the supply level and configures internal regulators accordingly. No external level-shifting circuitry is needed for I²C communication, as the I/O pads tolerate up to 3.6 V regardless of VDD setting - simplifying design for mixed-voltage systems.
How does the A7102CGTK2/T0B042J handle I²C address selection?
The A7102CGTK2/T0B042J uses pin IF1 to select between two I²C slave addresses: logic low sets 0x90 (7-bit 0x48), logic high sets 0x92 (7-bit 0x49). Address is latched at power-on-reset and remains fixed until next reset. This allows multiple A7102CGTK2/T0B042J devices on the same bus when combined with proper IF1 routing - essential for modular sensor hubs or multi-node edge gateways.
What cryptographic algorithms are implemented in hardware on the A7102CGTK2/T0B042J?
The A7102CGTK2/T0B042J implements ECC NIST P-256 in hardware for ECDSA signature/verification and ECDH/ECDH-E key agreement. It also includes dedicated AES128 coprocessor blocks for SCP03 secure channel operations and HKDF key derivation. RSA and SHA-1 are not supported; SHA-256 is available only in HMAC mode - all cryptographic operations execute inside the secure boundary with no host-accessible intermediate values.
Can the A7102CGTK2/T0B042J be placed into deep sleep mode without host MCU intervention?
No - deep sleep mode requires the host MCU to drive RST_N low for ≥500 µs. Unlike SLEEP mode (which activates automatically after 312 ms of I²C inactivity), DEEP SLEEP is a deliberate, externally triggered state. Once entered, the A7102CGTK2/T0B042J consumes ≤10 µA and retains all secure state; exit occurs only when RST_N is released to logic high, initiating full reset sequence with re-initialization of the Java Card OS.
A7102CGTK2/T0B042J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 8-VDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Applications:
- Authentication
- Core Processor:
- MX51
- Program Memory Type:
- EEPROM (20kB)
- Controller Series:
- A710x
- RAM Size:
- -
- Interface:
- I2C
- Number of I/O:
- -
- Voltage - Supply:
- 1.62V ~ 3.6V
- Operating Temperature:
- -40°C ~ 90°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-HVSON (4x4)
A7102CGTK2/T0B042J FAQ
1.How can I place an order for A7102CGTK2/T0B042J through Aetrix?
Please submit a Request for Quotation (RFQ) for A7102CGTK2/T0B042J 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 A7102CGTK2/T0B042J reliable?
The price and inventory of A7102CGTK2/T0B042J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for A7102CGTK2/T0B042J is usually 5 days.
3.What payment methods are accepted for A7102CGTK2/T0B042J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for A7102CGTK2/T0B042J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for A7102CGTK2/T0B042J?
A7102CGTK2/T0B042J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your A7102CGTK2/T0B042J 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 A7102CGTK2/T0B042J?
For technical support, including A7102CGTK2/T0B042J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your A7102CGTK2/T0B042J requirements.
6.How does Aetrix verify that A7102CGTK2/T0B042J is sourced from the original manufacturer or authorized distributors?
All A7102CGTK2/T0B042J 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 A7102CGTK2/T0B042J meets industry standards.
7.What is the process for return or replacement of A7102CGTK2/T0B042J?
All A7102CGTK2/T0B042J units undergo pre-shipment inspection (PSI). If there is an issue with A7102CGTK2/T0B042J, 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 A7102CGTK2/T0B042J part is unused and in its original packaging.
Return procedure for A7102CGTK2/T0B042J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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