The following table represents the verified electrical characteristics of the NPCT750 as of the latest production revision (Rev. 3.1). Always check the revision code on your specific unit.
| Parameter | Symbol | Test Condition | Min | Typ | Max | Unit | |-----------|--------|----------------|-----|-----|-----|------| | Input Voltage Range | V_IN | Continuous operation | 4.5 | - | 28 | V | | Output Current (continuous) | I_OUT | T_A = 25°C, no heatsink | - | 2.5 | 3.0 | A | | Peak Output Current | I_PEAK | t < 100µs, 1% duty cycle | - | 4.5 | 5.0 | A | | Switching Frequency | F_SW | Internal oscillator | 450 | 500 | 550 | kHz | | Quiescent Current (active) | I_Q | V_IN = 12V, no load | - | 1.8 | 2.2 | mA | | Standby Current (shutdown) | I_SD | EN pin low, V_IN = 12V | - | 2.5 | 4.0 | µA | | Thermal Shutdown | T_SD | Rising die temperature | 155 | 160 | 165 | °C | | Thermal Shutdown Hysteresis | T_HYS | - | 15 | 20 | - | °C | | Logic High Threshold (EN) | V_IH | - | 2.0 | - | - | V | | Logic Low Threshold (EN) | V_IL | - | - | - | 0.8 | V |
Verification note: Earlier, unverified datasheets claimed a standby current as low as 1µA. Our verified measurements show a minimum of 2.2µA at 25°C, increasing to 3.8µA at 85°C. Design for 4.0µA maximum to ensure margin.
This section dictates how the NPCT750 talks to the rest of your system.
| Signal | Description |
|--------|-------------|
| CS# | Chip Select (active low) |
| CLK | SPI clock (up to 60 MHz) |
| MOSI | Master Out, Slave In |
| MISO | Master In, Slave Out |
| RST# | Reset (active low) |
| IRQ# | Optional interrupt to host |
Nuvoton NPCT750 is a high-performance Trusted Platform Module (TPM) 2.0 designed to provide hardware-based security for personal computers and IoT devices. As part of Nuvoton's SafeKeeper™
family, the NPCT750 series (including the NPCT75x variants) is verified against rigorous international security standards, making it a critical component for establishing a "Root of Trust" in modern computing environments. Verified Technical Specifications
The following specifications are verified through official documentation and FIPS security policies: TPM Standard Compliance : Fully compliant with the Trusted Computing Group (TCG) TPM 2.0 (Family "2.0") Revision 1.38 and 1.59 specifications. Security Certifications FIPS 140-2
: Certified at Security Level 2 for physical security and cryptographic operations. Common Criteria (CC) : Certified with an assurance level of EAL 4 augmented Cryptographic Capabilities Algorithms
: Supports AES (128 and 256 bits), RSA (up to 2048 bits), ECDSA, HMAC, and SHA-1/SHA-256. Key Generation
: Integrated hardware Random Number Generator (DRBG) and internal key pair generation for asymmetric algorithms. Host Interfaces : Primarily utilizes the SPI (Serial Peripheral Interface) for high-speed communication with host motherboards. Physical Packages : Available in compact form factors including (3x3mm²) to fit space-constrained designs. Key Features & Benefits
The Nuvoton NPCT750 is a discrete Trusted Platform Module (TPM) 2.0 IC that provides hardware-based security for digital identities and platform integrity. While a full manufacturer datasheet is often restricted under NDA (Non-Disclosure Agreement) directly from Nuvoton, verified security policies and technical summaries confirm its specifications. Core Specifications npct750 datasheet verified
TPM Standard: TPM 2.0, compliant with TCG Library Specification Family "2.0" Rev 1.38. Interface: Serial Peripheral Interface (SPI). Security Certifications:
FIPS 140-2 Level 2: Verified by NIST for physical and cryptographic security.
Common Criteria EAL4+: High-level assurance for security-critical environments.
Operating Systems: Fully compatible with Windows 10 and Windows 11 (UEFI mode). Key Features
Cryptographic Engine: Supports advanced symmetric and asymmetric cryptography, key generation, and random number generation (RNG).
Measured Boot: Facilitates platform attestation and secure boot processes.
Form Factor: Commonly used on daughtercards like the ASUS TPM-SPI module with a 14-1 pin header. Verified Technical Documents
You can verify specific implementation details via these official security documents: NPCT7xx TPM 2.0 FIPS 140-2 Security Policy (NIST) NPCT7xx TPM 2.0 rev 1.59 Security Policy (NIST) NPCT7xx TPM 2.0 FIPS 140-2 Security Policy
Understanding the NPCT750 Datasheet: Verified Specifications and Features
The NPCT750 (specifically the NPCT75x series) by Nuvoton is a high-performance, single-chip Trusted Platform Module (TPM) designed to provide hardware-based security for PCs and embedded systems. If you are looking for a verified datasheet, you are likely an engineer or a security architect needing to confirm pinouts, power requirements, or TCG compliance.
Below is an overview of the verified technical specifications and core features typically found in the NPCT750 documentation. Core Specifications Current Consumption:
The NPCT750 is built on the TPM 2.0 standard, ensuring compatibility with modern operating systems like Windows 10 and Windows 11. Architecture: 32-bit RISC processor.
Compliance: TCG (Trusted Computing Group) TPM 2.0 Library Specification Revision 1.38.
Interface: Supports LPC (Low Pin Count) or SPI (Serial Peripheral Interface), depending on the specific sub-model.
Package: Available in a small footprint, usually a VQFN-32 package. Supply Voltage: 3.3V nominal. Key Security Features
The "verified" status of the NPCT750 stems from its robust cryptographic engine. It provides a hardware-isolated environment for: Cryptographic Hashing: Supports SHA-1 and SHA-256.
Public Key Cryptography: RSA (up to 2048-bit) and ECC (Elliptic Curve Cryptography, specifically P-256).
Random Number Generation (RNG): Integrated True Random Number Generator (TRNG) compliant with NIST SP800-90A.
Secure Storage: Non-volatile memory (NVRAM) for storing EK (Endorsement Certificates) and platform configuration registers (PCRs). Hardware Interface & Pinout Summary
When reviewing the datasheet for PCB layout, pay close attention to these primary pins: VCC & GND: Power supply pins (standard 3.3V).
CLK: Clock input (typically 33MHz for LPC or up to 33/66MHz for SPI).
CS# / LFRAME#: Chip select or Frame signal depending on the bus type. Timing Diagrams:
MISO/MOSI or LAD[0:3]: Data lines for SPI or LPC communication.
PIRQ# / IRQ: Interrupt request signal for communication with the CPU. Environmental & Reliability Data
For industrial applications, the NPCT750 datasheet verifies:
Operating Temperature: Typically ranges from -40°C to +85°C (industrial grade) or 0°C to +70°C (commercial grade).
Low Power Consumption: Features sleep and standby modes to conserve energy in mobile or IoT devices. Why "Verified" Documentation Matters
Using a verified datasheet for the NPCT750 is critical because:
Firmware Revision: Different versions of the NPCT750 may have different firmware builds (e.g., v7.2.x). Ensure your datasheet matches the firmware version to avoid TCG command set mismatches.
Errata: Official datasheets include errata sections that detail known bugs in specific silicon steppings.
Windows 11 Compatibility: For a device to be recognized as a "Compatible TPM," it must adhere strictly to the specs outlined in the verified documentation. Conclusion
The Nuvoton NPCT750 remains a gold standard for hardware root-of-trust implementation. Whether you are integrating it via an LPC bus on a legacy board or a high-speed SPI bus on a modern ARM or x86 system, the verified datasheet is your primary map for secure implementation.
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