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Microchip Technology AT97SC3204-X2MA-10
- Part No.:
- AT97SC3204-X2MA-10
- Manufacturer:
- Microchip Technology
- Category:
- Application Specific Microcontrollers
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
AT97SC3204-X2MA-10.pdf
- Description:
- IC CRYPTO TPM LPC 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,189
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Product details
Overview
AT97SC3204-X2MA-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 1756-byte NV user storage. It operates at 3.3V on a 33MHz LPC bus and targets secure boot and platform authentication in desktop/laptop motherboards.
For engineers reviewing the AT97SC3204-X2MA-10 datasheet, AT97SC3204-X2MA-10 pinout, AT97SC3204-X2MA-10 application, or AT97SC3204-X2MA-10 equivalent, key selection criteria include LPC interface timing compliance, industrial temperature range (-40°C to +85°C), 40-pin QFN package footprint, TCG 1.2 firmware integration, and GPIO-Express-00 support for platform-specific control signals.
Technical Context
The AT97SC3204-X2MA-10 implements a full TCG TPM 1.2 stack in silicon, including dedicated cryptographic acceleration for RSA-1024 (40ms) and SHA-1 (20μs per 64-byte block), coupled with internal EEPROM for persistent RSA key storage and SRAM for runtime command processing. Its LPC interface supports SIRQ and CLKRUN# for power-aware interrupt handling and clock gating in mobile platforms.
Security architecture includes physical tamper detection circuitry, secure firmware execution in ROM/EEPROM, and a hardware RNG seeded by analog entropy sources - all validated under FIPS 140-2 Level 2 requirements. The device uses dynamic internal memory management for key caching without host OS intervention beyond standard TCG commands like TPM_LoadKey2.
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 across Windows/Linux platforms. |
| RSA Performance | 2048-bit signature generation in ≤200ms - meets TCG latency requirements for secure boot attestation. |
| LPC Interface | 33MHz synchronous bus with LAD[0:3], LFRAME#, LCLK, SERIRQ, CLKRUN# - matches Intel PCH LPC timing specs. |
| Operating Temp | -40°C to +85°C industrial grade - supports deployment in ruggedized embedded PCs and industrial controllers. |
| Supply Voltage | 3.3V ±10% - compatible with standard motherboard VCC_IO rails and requires no level-shifting circuitry. |
| NV Storage | 1756 bytes user-defined non-volatile space - sufficient for storing platform configuration hashes, certificates, and sealed keys. |
| RNG Certification | FIPS 140-2 compliant hardware RNG - provides cryptographically secure entropy for key generation without software polling delays. |
Pinout & Package
AT97SC3204-X2MA-10 is packaged in a 40-pad QFN (6.0mm × 6.0mm, 0.50mm pitch), pin-compatible with the 40ML1 variant. This package supports reflow soldering and offers low thermal resistance for sustained cryptographic operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Main 3.3V supply input | Power rail for core logic, crypto engine, and I/O buffers; decoupling required per JEDEC QFN guidelines. |
| SB3V | Standby 3.3V supply | Provides backup power to retain volatile state during LPC suspend; enables fast resume from sleep states. |
| LAD0–LAD3 | LPC bidirectional data/address lines | Time-multiplexed command/address/data channel; supports burst transfers and error detection via parity. |
| LFRAME# | LPC frame strobe | Active-low signal indicating start/end of LPC transaction cycle; synchronizes host-to-device handshaking. |
| SERIRQ | Serialized interrupt request | Open-drain shared interrupt line compliant with ACPI _Lxx methods; supports edge-triggered assertion. |
| CLKRUN# | LPC clock run control | Enables dynamic clock gating for power savings; asserted by host to request clock resumption after stop. |
| GPIO-Express-00 | Configurable general-purpose I/O | Assigned to TPM_NV_INDEX_GPIO_00 per TCG spec; used for platform-specific signaling (e.g., chassis intrusion detect). |
Key Features
| Feature | Design Value |
|---|---|
| Hardware RSA Accelerator | Offloads asymmetric crypto from host CPU, enabling sub-200ms 2048-bit signatures without software library overhead. |
| FIPS 140-2 RNG | Delivers certified entropy directly to firmware, eliminating need for external entropy sources or software-based PRNG seeding. |
| Integrated TCG Firmware | Turnkey implementation of TPM 1.2 command set in ROM/EEPROM - no host-side firmware porting required. |
| LPC Power Management | Supports CLKRUN# and SIRQ for full ACPI-compliant suspend/resume - critical for battery-powered client platforms. |
| Secure Key Storage | Internal EEPROM stores RSA keys with write-protection and access-control policies enforced in hardware. |
Applications
| Desktop Motherboard Security | Laptop Platform Authentication |
|---|---|
Use Scenario: Integration into Intel H-series chipset-based desktop motherboards for secure boot chain verification and BitLocker key sealing. IC Role / Device Role / Timing Role: Root-of-trust anchor performing PCR extension, key wrapping, and attestation signing during POST and OS load. Use Value: Enables hardware-enforced Windows Defender Credential Guard and measured boot logs stored in protected NV space. | Use Scenario: Embedded in ultrabook mainboards to support Intel TXT and TPM-based disk encryption with fast resume from Modern Standby (S0ix). IC Role / Device Role / Timing Role: Secure co-processor managing platform configuration registers (PCRs) and responding to LPC-hosted TCG commands within strict ACPI timing windows. Use Value: Reduces resume latency by >15ms vs. software-only solutions due to dedicated crypto engine and CLKRUN#-aware power sequencing. |
| Industrial PC Integrity Monitoring | Embedded Medical Device Boot Assurance |
Use Scenario: Deployed in fanless IPCs operating in factory automation environments requiring tamper-evident firmware validation. IC Role / Device Role / Timing Role: Hardware-enforced integrity monitor verifying bootloader and kernel image hashes before execution. Use Value: Prevents unauthorized firmware updates via write-protected EEPROM storage and physical security circuitry detecting probe attempts. | Use Scenario: Used in FDA-cleared diagnostic imaging systems where boot-time firmware authenticity must be verifiable for regulatory audit trails. IC Role / Device Role / Timing Role: Cryptographic root-of-trust generating time-stamped attestation reports signed with embedded RSA key pair. Use Value: Provides auditable evidence of unmodified boot sequence via SHA-1–accelerated PCR hashing and FIPS-certified RNG–derived nonces. |
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 SLB9665TT2.0 | Supports TPM 2.0 specification; uses SPI interface instead of LPC; higher RSA-2048 throughput (≤120ms) | Requires SPI-capable PCH and updated BIOS drivers; not drop-in LPC replacement | Select when upgrading to TPM 2.0 compliance and migrating to SPI-based platform designs. |
| Nuvoton NPCT750YAXX | LPC interface with TPM 1.2 compliance; lower NV storage (1024 bytes); no GPIO-Express support | Compatible with legacy LPC timing but lacks platform-specific GPIO for chassis intrusion or debug enable | Select for cost-sensitive designs where extended GPIO functionality and full 1756-byte NV space are not required. |
Compared with SLB9665TT2.0 and NPCT750YAXX, the AT97SC3204-X2MA-10 uniquely balances TCG 1.2 compliance, industrial temperature support, 40-pin QFN packaging, and GPIO-Express-00 - making it optimal for OEMs maintaining LPC-based designs while requiring field-deployable tamper resistance and BIOS-integrated attestation.
Availability
AT97SC3204-X2MA-10 is available at Aetrix Electronics and suitable for desktop motherboard design, laptop platform authentication, and industrial PC integrity monitoring requiring stable component supply and long-term lifecycle support.
Supply support for AT97SC3204-X2MA-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 turnkey TPM 1.2 modules targeting PC client platforms, designed to simplify BIOS integration and meet global security certification requirements for OEM motherboard manufacturing.
FAQ
What is the primary interface type supported by the AT97SC3204-X2MA-10?
The AT97SC3204-X2MA-10 uses a Low Pin Count (LPC) bus interface operating at 33MHz, with dedicated signals including LAD[0:3], LFRAME#, LCLK, SERIRQ, and CLKRUN#. This interface is fully compliant with the TCG PC Client TIS 1.2 specification and designed for direct connection to Intel/AMD PCH chipsets without protocol translation.
Does the AT97SC3204-X2MA-10 support industrial temperature operation?
Yes, the AT97SC3204-X2MA-10 is rated for -40°C to +85°C operation, meeting industrial temperature requirements. This rating is confirmed in the official Atmel ordering information and applies specifically to the X2MA-10 variant, enabling use in fanless industrial PCs and embedded controllers exposed to wide ambient conditions.
What cryptographic accelerations are implemented in hardware within the AT97SC3204-X2MA-10?
The AT97SC3204-X2MA-10 integrates a hardware crypto engine supporting RSA-1024 signature generation in ≤40ms and RSA-2048 in ≤200ms, plus SHA-1 acceleration at 20μs per 64-byte block. These functions are executed independently of the AVR RISC core, ensuring deterministic latency for TCG command responses.
How much non-volatile user storage does the AT97SC3204-X2MA-10 provide?
The AT97SC3204-X2MA-10 provides 1756 bytes of user-defined non-volatile storage in internal EEPROM. This space is accessible via standard TCG commands (e.g., TPM_NV_Write, TPM_NV_Read) and is protected by authorization policies and write-lock mechanisms enforced in hardware.
Is the random number generator in the AT97SC3204-X2MA-10 certified to any security standard?
Yes, the AT97SC3204-X2MA-10 includes a hardware random number generator certified to FIPS 140-2. It uses analog entropy sources and a NIST-approved pseudo-random number generator algorithm, delivering cryptographically secure output directly usable for RSA key generation and nonce creation without software post-processing.
AT97SC3204-X2MA-10 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- CryptoController™
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Cut Tape (CT)
- 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:
- 40-VQFN (6x6)
AT97SC3204-X2MA-10 FAQ
1.How can I place an order for AT97SC3204-X2MA-10 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT97SC3204-X2MA-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-X2MA-10 reliable?
The price and inventory of AT97SC3204-X2MA-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-X2MA-10 is usually 5 days.
3.What payment methods are accepted for AT97SC3204-X2MA-10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT97SC3204-X2MA-10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT97SC3204-X2MA-10?
AT97SC3204-X2MA-10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT97SC3204-X2MA-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-X2MA-10?
For technical support, including AT97SC3204-X2MA-10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT97SC3204-X2MA-10 requirements.
6.How does Aetrix verify that AT97SC3204-X2MA-10 is sourced from the original manufacturer or authorized distributors?
All AT97SC3204-X2MA-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-X2MA-10 meets industry standards.
7.What is the process for return or replacement of AT97SC3204-X2MA-10?
All AT97SC3204-X2MA-10 units undergo pre-shipment inspection (PSI). If there is an issue with AT97SC3204-X2MA-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-X2MA-10 part is unused and in its original packaging.
Return procedure for AT97SC3204-X2MA-10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT97SC3204-X2MA-10 Tags
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