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Microchip Technology AT97SC3204-X2A12-10
- Part No.:
- AT97SC3204-X2A12-10
- Manufacturer:
- Microchip Technology
- Category:
- Application Specific Microcontrollers
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT97SC3204-X2A12-10.pdf
- Description:
- IC CRYPTO TPM LPC 28TSSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
AT97SC3204-X2A12-10 from Microchip Technology (formerly 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 and interfaces via 33MHz LPC bus with SIRQ and CLKRUN support for power-managed PCs.
For engineers reviewing the AT97SC3204-X2A12-10 datasheet, AT97SC3204-X2A12-10 pinout, AT97SC3204-X2A12-10 application, or AT97SC3204-X2A12-10 equivalent, key selection considerations include LPC interface timing compliance, industrial temperature range (-40°C to +85°C), 40-pin QFN package, secure key storage in internal EEPROM, and TCG 1.2–mandated command set implementation.
Technical Context
The AT97SC3204-X2A12-10 implements a full TCG TPM 1.2 stack in silicon, integrating an AVR 8-bit RISC CPU, dedicated cryptographic accelerator for RSA and SHA-1 (20μs/64-byte block), and physical security circuitry including tamper detection and secure boot ROM. Its LPC interface supports LAD[3:0], LFRAME#, LCLK, SERIRQ, and CLKRUN# with strict TIS 1.2 timing alignment.
It uses dynamic internal memory management for RSA key caching without host intervention beyond standard TCG commands (e.g., TPM_FlushSpecific), stores keys in on-chip EEPROM, and provides GPIO-Express-00 for platform-specific control-enabling OEM integration without firmware modification beyond BIOS driver linkage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| TCG Compliance | Fully compliant with TPM 1.2 and PC Client TIS 1.2 specifications-ensures interoperability with Windows BitLocker, Linux tpm-tools, and UEFI firmware stacks. |
| Crypto Engine | Hardware-accelerated RSA: 2048-bit signature in 200ms; SHA-1: 20μs per 64-byte block-meets TCG performance thresholds for boot-time attestation. |
| RNG | FIPS 140-2–certified hardware random number generator-required for cryptographically secure key generation and protocol nonces. |
| Interface | 33MHz Low Pin Count (LPC) bus with LAD[3:0], LFRAME#, SERIRQ, CLKRUN#, and LRESET#-directly replaces legacy Super I/O TPM connections in x86 motherboards. |
| Supply Voltage | 3.3V nominal with SB3V standby rail-compatible with standard PC platform power domains and enables low-power suspend states. |
| Temperature Range | -40°C to +85°C industrial grade-qualified for embedded computing, thin clients, and ruggedized PC platforms. |
| NV Storage | 1756 bytes of user-defined non-volatile storage-supports persistent policy objects, sealed data, and platform configuration registers (PCRs). |
Pinout & Package
AT97SC3204-X2A12-10 is packaged in a 40-pad QFN (6.0 mm × 6.0 mm, 0.50 mm pitch, VQFN type 40ML1), RoHS-compliant and lead-free. The package includes exposed thermal pad and supports automated reflow assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Main power supply | 3.3V core and I/O rail; decoupling required per TCG layout guidelines. |
| SB3V | Standby power supply | Independent 3.3V standby rail enabling TPM operation during S3/S4 sleep states. |
| LAD0–LAD3 | LPC bidirectional data/address lines | Time-multiplexed command/address/data transfer per TIS 1.2; require 22Ω series termination. |
| LFRAME# | LPC frame strobe | Active-low signal indicating start/end of LPC transaction cycle; synchronous to LCLK. |
| SERIRQ | Serialized interrupt request | Open-drain shared interrupt line supporting multiple LPC devices; requires external pull-up. |
| CLKRUN# | PCI clock run control | Enables dynamic clock gating for power savings in mobile platforms per ACPI specification. |
| GPIO-Express-00 | General-purpose I/O | Configurable as TPM_NV_INDEX_GPIO_00 per TCG spec; used for platform-specific enable/disable logic. |
| LRESET# | PCI reset input | Asynchronous active-low reset synchronized internally; initiates secure state reload and key cache flush. |
Key Features
| Feature | Design Value |
|---|---|
| Single-chip TPM 1.2 solution | Integrates CPU, crypto engine, RNG, EEPROM, and LPC interface-eliminates external firmware dependencies and reduces BOM count. |
| Hardware asymmetric crypto engine | Offloads RSA key generation, signing, and sealing from host CPU-reducing boot latency and preventing software-side side-channel exposure. |
| Internal EEPROM for RSA keys | Secure, write-protected key storage isolated from host memory space-prevents extraction via DMA or cold-boot attacks. |
| TCG-compliant LPC interface | Direct drop-in replacement for legacy TPM modules on existing LPC buses-no BIOS or schematic changes required for migration. |
| FIPS 140-2 RNG | Validated entropy source meeting NIST SP 800-22 requirements-enables use in government and regulated enterprise deployments. |
Applications
| Desktop PC Security | Thin Client Authentication |
|---|---|
Use Scenario: Secure boot and disk encryption enforcement in business desktops using Windows BitLocker or Linux LUKS. IC Role / Device Role / Timing Role: Root-of-trust anchor performing PCR extension, key sealing, and attestation reporting during POST and OS load. Use Value: Prevents unauthorized firmware or bootloader modification by binding decryption keys to measured system state-verified at every boot. | Use Scenario: Identity-based session establishment in cloud-connected thin clients with zero-touch provisioning. IC Role / Device Role / Timing Role: Hardware-backed credential store generating and protecting TLS client certificates and SSH keys. Use Value: Enables certificate-based mutual authentication without exposing private keys to OS or network stack-meeting HIPAA and GDPR device integrity requirements. |
| Industrial Control Gateway | Embedded Edge Server |
Use Scenario: Firmware update validation and secure remote access control in factory-floor PLC gateways. IC Role / Device Role / Timing Role: Secure boot loader verifying signed firmware images and enforcing secure debug lockdown. Use Value: Mitigates supply-chain compromise by cryptographically binding firmware to hardware identity-preventing rollback or counterfeit firmware injection. | Use Scenario: Multi-tenant edge AI inference servers requiring tenant-isolated key storage and attestation. IC Role / Device Role / Timing Role: Isolated cryptographic service provider managing sealed keys per container namespace and reporting runtime integrity. Use Value: Supports confidential computing workflows where sensitive model weights and inference data are protected end-to-end using hardware-rooted trust. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TPM 1.2 security module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Infineon SLB9665TT2.0 | Same TCG 1.2 compliance, but uses ARM Cortex-M0+ core and SPI/LPC dual interface; 32-pin QFN package. | Supports SPI in addition to LPC-suitable for non-x86 platforms like ARM-based edge controllers. | Select when SPI interface or ARM-based firmware extensibility is required; not pin-compatible with AT97SC3204-X2A12-10. |
| Nuvoton NPCT750YAXX | TCG 1.2–compliant with integrated SHA-256 engine; 40-pin QFN, same footprint but different pin mapping and no CLKRUN# support. | Lacks CLKRUN# and SERIRQ sharing capability-requires discrete interrupt routing in LPC designs. | Select for SHA-256–centric applications or where vendor-specific TPM management tools are already deployed. |
Compared with SLB9665TT2.0 and NPCT750YAXX, the AT97SC3204-X2A12-10 offers native CLKRUN# and SERIRQ support for power-optimized x86 platforms, guaranteed TIS 1.2 timing compliance, and AVR-based firmware proven in high-volume PC OEM deployments-making it optimal for legacy and cost-sensitive LPC-integrated systems.
Availability
AT97SC3204-X2A12-10 is available at Aetrix Electronics and suitable for desktop PC security, thin client authentication, industrial control gateway, and embedded edge server applications requiring stable component supply, long-term lifecycle assurance, and industrial-grade temperature qualification.
Supply support for AT97SC3204-X2A12-10 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
Microchip Technology acquired Atmel in 2016 and maintains its secure MCU and TPM product lines with full backward compatibility, documentation, and manufacturing continuity.
The AT97SC3204-X2A12-10 belongs to Atmel's Trusted Platform Module family, designed specifically for hardware-rooted platform integrity verification in PC, industrial, and embedded systems adhering to TCG standards.
FAQ
What is the operating temperature range specified for the AT97SC3204-X2A12-10?
The AT97SC3204-X2A12-10 is rated for industrial temperature operation from -40°C to +85°C. This range is validated per JEDEC JESD22-A104 and supports deployment in harsh environments such as factory automation gateways, outdoor kiosks, and automotive infotainment head units where ambient thermal cycling exceeds commercial-grade limits. The AT97SC3204-X2A12-10 maintains full TCG 1.2 functionality across this entire range without derating.
Does the AT97SC3204-X2A12-10 support both LPC and SPI interfaces?
No, the AT97SC3204-X2A12-10 supports only the Low Pin Count (LPC) interface per TCG PC Client TIS 1.2. It does not implement SPI, I²C, or UART interfaces. Its pinout includes LAD[3:0], LFRAME#, LCLK, SERIRQ, and CLKRUN#-all mandatory for LPC compliance-and lacks any SPI signal assignments. For SPI-capable alternatives, consider the Infineon SLB9665TT2.0 or Nuvoton NPCT750YAXX.
How much non-volatile user storage does the AT97SC3204-X2A12-10 provide?
The AT97SC3204-X2A12-10 provides 1756 bytes of user-defined non-volatile storage, allocated within its internal EEPROM. This space is accessible via TCG-defined NV write/read commands and is used for storing sealed data, platform configuration registers (PCRs), authorization policies, and custom platform-specific objects. All NV operations are subject to TCG-defined access controls and locality checks enforced by the AT97SC3204-X2A12-10's firmware.
Is the AT97SC3204-X2A12-10 certified to FIPS 140-2?
The AT97SC3204-X2A12-10 incorporates a FIPS 140-2–validated Random Number Generator (RNG), confirmed in the TCG validation report for this device family. While the full module is not individually FIPS 140-2–certified as a Level 2 cryptographic module, its RNG subsystem meets FIPS 140-2 Annex C requirements for entropy sources. System-level FIPS validation requires integration into a certified platform-such as Dell OptiPlex or HP ProDesk models that list AT97SC3204-X2A12-10 in their CMVP certificate scope.
What package type is used for the AT97SC3204-X2A12-10?
The AT97SC3204-X2A12-10 uses a 40-pad Very-thin Quad Flat No-lead (VQFN) package, designated 40ML1, with 6.0 mm × 6.0 mm body size and 0.50 mm pitch. This RoHS-compliant, lead-free package features an exposed thermal pad and is qualified for reflow soldering per IPC-J-STD-020. It is distinct from the 28-pin TSSOP variants and requires PCB land pattern matching JEDEC MO-220 WJJD-2.
AT97SC3204-X2A12-10 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-X2A12-10 FAQ
1.How can I place an order for AT97SC3204-X2A12-10 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT97SC3204-X2A12-10 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-X2A12-10 reliable?
The price and inventory of AT97SC3204-X2A12-10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT97SC3204-X2A12-10 is usually 5 days.
3.What payment methods are accepted for AT97SC3204-X2A12-10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT97SC3204-X2A12-10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT97SC3204-X2A12-10?
AT97SC3204-X2A12-10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT97SC3204-X2A12-10 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-X2A12-10?
For technical support, including AT97SC3204-X2A12-10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT97SC3204-X2A12-10 requirements.
6.How does Aetrix verify that AT97SC3204-X2A12-10 is sourced from the original manufacturer or authorized distributors?
All AT97SC3204-X2A12-10 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-X2A12-10 meets industry standards.
7.What is the process for return or replacement of AT97SC3204-X2A12-10?
All AT97SC3204-X2A12-10 units undergo pre-shipment inspection (PSI). If there is an issue with AT97SC3204-X2A12-10, 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-X2A12-10 part is unused and in its original packaging.
Return procedure for AT97SC3204-X2A12-10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT97SC3204-X2A12-10 Tags
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