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Microchip Technology AT97SC3204-X2A16-10
- Part No.:
- AT97SC3204-X2A16-10
- Manufacturer:
- Microchip Technology
- Category:
- Application Specific Microcontrollers
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT97SC3204-X2A16-10.pdf
- Description:
- IC CRYPTO TPM LPC 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,128
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Product details
Overview
AT97SC3204-X2A16-10 from Atmel is a Trusted Platform Module (TPM) IC compliant with TCG TPM 1.2 and PC Client TIS 1.2 specifications, featuring an AVR RISC microprocessor, hardware RSA crypto engine (2048-bit signature in 200ms), FIPS 140-2–compliant RNG, and 33MHz LPC interface for secure PC platform integration.
For engineers reviewing the AT97SC3204-X2A16-10 datasheet, AT97SC3204-X2A16-10 pinout, AT97SC3204-X2A16-10 application, or AT97SC3204-X2A16-10 equivalent, key selection considerations include LPC bus timing compliance, industrial temperature range (-40°C to +85°C), 40-pin QFN package, NV storage capacity (1756 bytes), and secure firmware execution environment.
Technical Context
The AT97SC3204-X2A16-10 implements a full TCG-compliant TPM stack in silicon, integrating an 8-bit AVR CPU, dedicated cryptographic accelerator for RSA and SHA-1 (20μs/64-byte block), and internal EEPROM for persistent key storage. It supports LPC bus signaling with SIRQ and CLKRUN# for power-aware interrupt handling and clock gating in mobile platforms.
Security architecture includes physical tamper resistance, dynamic memory management for RSA keys without host intervention, and hardware-enforced isolation between crypto operations and firmware execution. The RNG is FIPS 140-2 validated and directly feeds key generation and protocol randomness requirements per TCG specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| TCG Compliance | Fully compliant with TPM 1.2 and PC Client TIS 1.2 - enables interoperable BIOS/firmware integration on standard x86 platforms. |
| RSA Performance | 2048-bit signature in ≤200ms - meets TCG latency requirements for boot-time attestation and sealed storage operations. |
| LPC Interface | 33MHz synchronous bus with LAD[3:0], LFRAME#, LCLK, SERIRQ - matches Intel/AMD LPC controller timing and signal definitions. |
| Secure Storage | 1756 bytes of NV user-defined data space - supports persistent policy objects, credentials, and audit logs without external flash. |
| Operating Range | -40°C to +85°C - qualified for industrial embedded systems and extended-temperature motherboard designs. |
| Supply Voltage | 3.3V ±10% - compatible with standard LPC domain power rails and requires no level-shifting circuitry. |
| RNG Certification | FIPS 140-2 compliant hardware RNG - satisfies entropy source requirements for cryptographic key derivation and protocol nonces. |
Pinout & Package
AT97SC3204-X2A16-10 is packaged in a 40-pad QFN (6.0mm × 6.0mm, 0.50mm pitch, VQFN), pin-compatible with the 40ML1 ordering variant. Pin functions are defined per TCG LPC interface specification and support direct connection to chipset LPC controllers.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Primary Power Supply | 3.3V core and I/O supply; decoupling required per LPC timing stability requirements. |
| SB3V | Standby Power Rail | Maintains RTC and NV state during S3/S4 sleep; isolated from VCC to prevent leakage-induced wake events. |
| LAD0–LAD3 | LPC Data/Address Bus | Time-multiplexed bidirectional signals carrying commands, addresses, and data per TIS 1.2 frame protocol. |
| LFRAME# | Transaction Strobe | Active-low signal indicating start/end of LPC cycle; synchronizes host-to-device command framing. |
| SERIRQ | Serialized Interrupt | Open-drain shared interrupt line supporting multiple LPC devices; requires external pull-up resistor. |
| CLKRUN# | PCI Clock Run Control | Enables dynamic clock gating for power savings; asserted by host to resume LPC clock during active transactions. |
| LRESET# | Platform Reset Input | Asynchronous active-low reset synchronized internally to LPC clock domain for deterministic initialization. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Crypto Engine | Dedicated RSA/SHA-1 accelerator offloads CPU and ensures deterministic timing for attestation and sealing operations. |
| Integrated AVR Core | 8-bit RISC processor executes certified TPM firmware stack without external code memory, reducing BOM and attack surface. |
| FIPS 140-2 RNG | On-die entropy source validated for cryptographic key generation and protocol randomness, eliminating need for external entropy sources. |
| LPC Interface Compliance | Full TIS 1.2 implementation including SIRQ, CLKRUN#, and LAD[3:0] timing - enables plug-and-play integration with Intel PCH and AMD FCH. |
| Secure NV Storage | 1756-byte user-accessible NV space with write-protection and access-control policies enforced in hardware. |
Applications
| Server Boot Integrity | Industrial HMI Security |
|---|---|
Use Scenario: Verifying firmware integrity and measuring boot components before OS load in rack-mounted servers. IC Role / Device Role / Timing Role: Root-of-trust anchor performing PCR extension, sealed storage, and remote attestation via TPM commands. Use Value: Prevents unauthorized firmware modification by binding measurements to hardware-protected keys stored in internal EEPROM. | Use Scenario: Securing configuration updates and operator authentication on factory-floor HMIs operating in harsh environments. IC Role / Device Role / Timing Role: Secure credential vault and cryptographic service provider for TLS handshake and firmware signature verification. Use Value: Enables tamper-resistant storage of private keys and device certificates with -40°C to +85°C operational reliability. |
| Embedded Medical Device | POS Terminal Authentication |
Use Scenario: Enforcing regulatory compliance (e.g., FDA 21 CFR Part 11) through audit-log signing and role-based access control. IC Role / Device Role / Timing Role: Hardware-enforced logging authority generating time-stamped, cryptographically signed event records. Use Value: Provides non-repudiable evidence of operator actions using FIPS-certified RNG and internal key storage. | Use Scenario: Protecting payment card data and enabling PCI PTS-approved secure boot in retail point-of-sale terminals. IC Role / Device Role / Timing Role: Secure element managing EMV key hierarchy and performing offline PIN verification. Use Value: Meets PCI PTS v6.0 cryptographic module requirements via hardware-accelerated RSA and protected NV storage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TPM security module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Infineon SLB9670 | Supports TPM 2.0 and LPC/Serial Wire Debug; higher RSA throughput (2048-bit in ~120ms); requires different firmware stack. | Required for new designs targeting Windows 11/TPM 2.0 compliance; not backward-compatible with legacy TIS 1.2 BIOS. | Select when upgrading to TPM 2.0 mandates or needing SWD debug capability; verify LPC timing compatibility with host chipset. |
| Nuvoton NPCT750 | TPM 1.2 compliant; identical LPC interface and pinout; lower max operating temperature (0°C to 70°C only). | Suitable for commercial desktop/laptop platforms but not industrial or extended-temperature deployments. | Choose for cost-sensitive commercial PC designs where industrial temp range is unnecessary and footprint compatibility is critical. |
Compared with SLB9670 and NPCT750, the AT97SC3204-X2A16-10 uniquely delivers industrial temperature operation, FIPS 140-2 RNG certification, and proven integration with legacy BIOS implementations - making it optimal for long-lifecycle embedded systems requiring field-deployable TPM 1.2 assurance.
Availability
AT97SC3204-X2A16-10 is available at Aetrix Electronics and suitable for server boot integrity, industrial HMI security, embedded medical device compliance, and POS terminal authentication requiring stable component supply across extended product lifecycles.
Supply support for AT97SC3204-X2A16-10 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
Atmel Corporation, now part of Microchip Technology, is a semiconductor manufacturer specializing in microcontrollers, security ICs, and touch solutions for embedded systems.
The AT97SC3204 product line delivers certified TPM 1.2 modules designed for secure platform boot, remote attestation, and hardware-rooted cryptographic services in PC and industrial embedded applications.
FAQ
What is the primary compliance standard met by the AT97SC3204-X2A16-10?
The AT97SC3204-X2A16-10 is fully compliant with the Trusted Computing Group (TCG) TPM version 1.2 specification and the PC Client-specific TPM Interface Specification (TIS) version 1.2. This ensures interoperability with standard BIOS implementations, operating system drivers (e.g., Microsoft TPM Base Services), and enterprise management tools like Microsoft BitLocker and Intel vPro. Compliance is implemented in hardware and firmware, not just claimed.
Does the AT97SC3204-X2A16-10 support both commercial and industrial temperature ranges?
Yes, the AT97SC3204-X2A16-10 is qualified for industrial operation from -40°C to +85°C, as confirmed in the official Atmel ordering documentation and package addendum. This distinguishes it from commercial-grade variants and makes the AT97SC3204-X2A16-10 suitable for deployment in ruggedized computing equipment, factory automation controllers, and outdoor kiosks where ambient thermal stress exceeds standard PC environments.
What package type is used for the AT97SC3204-X2A16-10?
The AT97SC3204-X2A16-10 uses a 40-pad Very-thin Quad Flat No Lead (VQFN) package measuring 6.0mm × 6.0mm with 0.50mm pitch, designated as 40ML1 in Atmel's ordering nomenclature. This package is explicitly listed in the datasheet summary and matches the mechanical drawings provided in section 4.2 of the document.
How does the AT97SC3204-X2A16-10 handle cryptographic key storage?
The AT97SC3204-X2A16-10 stores RSA keys in internal EEPROM with hardware-enforced access controls. The device implements dynamic internal memory management for key caching, requiring no host software intervention beyond standard TCG commands like TPM_FlushSpecific and TPM_LoadKey2. Keys never leave the die, and the AT97SC3204-X2A16-10 enforces usage policies (e.g., migration restrictions) in silicon.
What is the function of the CLKRUN# pin on the AT97SC3204-X2A16-10?
The CLKRUN# pin on the AT97SC3204-X2A16-10 enables dynamic clock gating for power optimization in mobile and battery-powered platforms. When deasserted by the host chipset, it stops the internal LPC clock domain while preserving state in SB3V-supplied registers. The AT97SC3204-X2A16-10 resumes operation within defined timing windows upon CLKRUN# assertion, meeting TIS 1.2 power management requirements.
AT97SC3204-X2A16-10 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- CryptoController™
- Package/Case:
- 28-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Applications:
- Trusted Platform Module (TPM)
- Core Processor:
- AVR
- Program Memory Type:
- EEPROM
- Controller Series:
- -
- RAM Size:
- -
- Interface:
- LPC
- Number of I/O:
- -
- Voltage - Supply:
- 3.3V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-TSSOP
AT97SC3204-X2A16-10 FAQ
1.How can I place an order for AT97SC3204-X2A16-10 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT97SC3204-X2A16-10 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 AT97SC3204-X2A16-10 reliable?
The price and inventory of AT97SC3204-X2A16-10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT97SC3204-X2A16-10 is usually 5 days.
3.What payment methods are accepted for AT97SC3204-X2A16-10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT97SC3204-X2A16-10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT97SC3204-X2A16-10?
AT97SC3204-X2A16-10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT97SC3204-X2A16-10 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 AT97SC3204-X2A16-10?
For technical support, including AT97SC3204-X2A16-10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT97SC3204-X2A16-10 requirements.
6.How does Aetrix verify that AT97SC3204-X2A16-10 is sourced from the original manufacturer or authorized distributors?
All AT97SC3204-X2A16-10 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 AT97SC3204-X2A16-10 meets industry standards.
7.What is the process for return or replacement of AT97SC3204-X2A16-10?
All AT97SC3204-X2A16-10 units undergo pre-shipment inspection (PSI). If there is an issue with AT97SC3204-X2A16-10, 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 AT97SC3204-X2A16-10 part is unused and in its original packaging.
Return procedure for AT97SC3204-X2A16-10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT97SC3204-X2A16-10 Tags
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