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Microchip Technology AT97SC3204-X4A14-10
- Part No.:
- AT97SC3204-X4A14-10
- Manufacturer:
- Microchip Technology
- Category:
- Application Specific Microcontrollers
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT97SC3204-X4A14-10.pdf
- Description:
- IC CRYPTO TPM LPC 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,990
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Product details
Overview
AT97SC3204-X4A14-10 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 and interfaces via 33MHz LPC bus with SIRQ and CLKRUN support for power-managed PCs.
For engineers reviewing the AT97SC3204-X4A14-10 datasheet, AT97SC3204-X4A14-10 pinout, AT97SC3204-X4A14-10 application, or AT97SC3204-X4A14-10 equivalent, this page delivers verified package mapping (40-pin QFN), LPC interface timing, secure key storage architecture, and industrial-grade (-40°C to +85°C) operation - all critical for BIOS-integrated security module selection.
Technical Context
The AT97SC3204-X4A14-10 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 internal EEPROM for persistent RSA key storage. Its LPC interface supports LAD[0:3], LFRAME#, LCLK, SERIRQ, and CLKRUN# with active-low reset (LRESET#) and standby supply (SB3V).
Security features include physical tamper resistance, dynamic internal key cache management (no host intervention required for TPM_FlushSpecific/TPM_LoadKey2), and hardware-enforced RNG output used for both TCG protocol functions and system-level random number generation - all validated under FIPS 140-2 requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| TCG Compliance | TPM 1.2 and PC Client TIS 1.2 - enables interoperable BIOS/firmware integration in Windows/Linux enterprise platforms. |
| Crypto Engine | Hardware RSA accelerator: 2048-bit signature in ≤200ms; SHA-1 at 20μs per 64-byte block - offloads CPU during boot attestation. |
| RNG | FIPS 140-2–certified hardware RNG - provides cryptographically secure entropy for key generation and protocol randomness. |
| Nonvolatile Storage | 1756 bytes of user-defined NV space + dedicated EEPROM for RSA keys - persists credentials across reboots without external memory. |
| Interface | 33MHz Low Pin Count (LPC) bus with LAD[0:3], LFRAME#, SERIRQ, CLKRUN#, and LRESET# - matches Intel/AMD chipset LPC timing requirements. |
| Supply & Temp | 3.3V single supply; industrial operating range (-40°C to +85°C) - suitable for embedded systems requiring extended thermal reliability. |
| Package | 40-pad QFN (6.0 × 6.0 × 0.9 mm, 0.50 mm pitch) - surface-mount compatible with automated PCB assembly and thermal pad grounding. |
Pinout & Package
AT97SC3204-X4A14-10 is packaged in a 40-pad Very-thin Quad Flat No Lead (VQFN) with exposed thermal pad, 6.0 mm × 6.0 mm body, and 0.50 mm pitch. Pin 1 is marked by a dot; the package supports reflow soldering and requires PCB thermal pad connection for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Main 3.3V supply | Primary power input; decoupling capacitor required near pin for noise suppression during crypto operations. |
| SB3V | Standby 3.3V supply | Provides backup power to retain volatile state during LPC clock-stop (CLKRUN# asserted); must be stable when main VCC is gated. |
| LAD0–LAD3 | LPC bidirectional data/address lines | Time-multiplexed command/address/data bus; supports burst transfers and TIS-compliant handshake timing. |
| LFRAME# | LPC frame strobe | Active-low signal indicating start/end of LPC transaction cycle; synchronizes host-to-TPM command framing. |
| LCLK | 33MHz LPC clock input | System-synchronized clock source; defines maximum transaction rate and aligns with Intel PCH LPC timing budgets. |
| SERIRQ | Serialized interrupt request | Open-drain bidirectional interrupt line shared with other LPC devices; requires pull-up resistor and conforms to ACPI IRQ routing. |
| CLKRUN# | PCI clock run control | Enables dynamic clock gating for power savings in mobile platforms; asserted low to stop LCLK during idle periods. |
| LRESET# | Active-low reset input | Asynchronous hardware reset that clears internal state and forces TPM initialization sequence on next LPC access. |
| GPIO-Express-00 | Configurable general-purpose I/O | Assigned to TPM_NV_INDEX_GPIO_00 per TCG specification; usable for platform-specific status signaling or firmware handshaking. |
Key Features
| Feature | Design Value |
|---|---|
| Single-chip TPM 1.2 solution | Integrates CPU, crypto engine, RNG, EEPROM, and LPC interface - eliminates external components and reduces BOM count for OEM motherboard designs. |
| Hardware asymmetric crypto engine | Offloads RSA signing/verification from host CPU, enabling fast boot-time attestation and measured boot without software latency penalties. |
| FIPS 140-2–compliant RNG | Delivers certified entropy directly to firmware and OS drivers - satisfies NIST SP 800-140B requirements for cryptographic key derivation. |
| LPC interface with CLKRUN# support | Enables full power-state coordination with Intel/AMD chipsets, allowing dynamic clock gating while maintaining TPM availability during S3/S4 transitions. |
| Industrial temperature range | Validated operation from -40°C to +85°C - ensures reliable key storage and crypto execution in ruggedized embedded and industrial PC environments. |
Applications
| Secure Boot Authentication | BIOS Firmware Integrity |
|---|---|
|
Use Scenario: Verifying digital signatures of UEFI firmware images before execution during cold boot. IC Role / Device Role / Timing Role: TPM acts as root-of-trust for measurement and signature validation; performs RSA-2048 verification within 200ms to meet boot-time constraints. Use Value: Prevents unauthorized firmware modification by binding cryptographic keys to hardware identity and enforcing signed image policy at power-on. |
Use Scenario: Storing and protecting hash values of BIOS configuration blocks and option ROMs across reboots. IC Role / Device Role / Timing Role: Uses internal EEPROM to persist PCR (Platform Configuration Register) values and NV storage for BIOS lock settings. Use Value: Enables tamper-evident logging of configuration changes and enforces policy-based BIOS lockdown without relying on volatile RAM or external flash. |
| Enterprise Credential Vault | Mobile Platform Power Management |
|
Use Scenario: Securing BitLocker encryption keys and Windows Hello biometric templates on corporate laptops. IC Role / Device Role / Timing Role: Hosts encrypted key blobs in protected NV space; uses hardware RNG to generate session keys for key wrapping. Use Value: Isolates sensitive credentials from OS memory attacks and prevents offline brute-force extraction via physical memory dumps. |
Use Scenario: Coordinating low-power states in ultrabooks and 2-in-1 devices where LPC bus clock must be gated during S3 suspend. IC Role / Device Role / Timing Role: Responds to CLKRUN# assertion to enter low-power mode while retaining SRAM state and supporting SERIRQ wake events. Use Value: Reduces platform idle power by >15mW through synchronized clock gating without sacrificing TPM responsiveness on resume. |
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 | TPM 2.0 compliant; supports ECC and SHA-256; higher crypto throughput but larger 6×6mm TFBGA package. | Required for Windows 11 compliance and post-2020 OEM designs; lacks direct TIS 1.2 backward compatibility. | Select when upgrading to TPM 2.0 mandates or requiring ECC-based attestation; not drop-in for legacy BIOS implementations. |
| Nuvoton NPCT750YX | LPC-based TPM 1.2 device with identical pinout and voltage; lower max operating temp (0°C to 70°C) and no industrial grade variant. | Suitable for commercial desktops but unsuitable for extended-temperature industrial PCs or automotive gateways. | Choose for cost-sensitive commercial motherboards where industrial temp range and SB3V standby supply are not required. |
Compared with AT97SC3204-X4A14-10, the SLB9665TT2.0 enables future-proof TPM 2.0 deployment but requires firmware redesign, while the NPCT750YX offers pin-compatible replacement for commercial use only - making AT97SC3204-X4A14-10 the sole industrial-grade, LPC-native TPM 1.2 option with integrated SB3V support.
Availability
AT97SC3204-X4A14-10 is available at Aetrix Electronics and suitable for secure boot authentication, BIOS firmware integrity verification, enterprise credential vaulting, and mobile platform power management requiring stable component supply and long-term lifecycle assurance.
Supply support for AT97SC3204-X4A14-10 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, nonvolatile memory, and security ICs for embedded and industrial applications.
The AT97SC3204 product line delivers turnkey TPM 1.2 modules targeting PC motherboard and embedded system OEMs needing hardware-rooted trust, cryptographic acceleration, and BIOS-integrated security without custom firmware development.
FAQ
What is the primary compliance standard met by the AT97SC3204-X4A14-10?
The AT97SC3204-X4A14-10 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 industry-standard BIOS implementations, Windows Trusted Boot, and Linux tpm-tools. The AT97SC3204-X4A14-10 does not support TPM 2.0 or later standards.
Does the AT97SC3204-X4A14-10 support industrial temperature operation?
Yes, the AT97SC3204-X4A14-10 is qualified for industrial temperature range operation from -40°C to +85°C. This rating is explicitly confirmed in the ordering information section of the datasheet summary and applies to the X4A14-10 variant. The industrial grade enables deployment in ruggedized embedded systems, industrial PCs, and network appliances where extended thermal reliability is required.
What package type is used for the AT97SC3204-X4A14-10?
The AT97SC3204-X4A14-10 uses a 40-pad Very-thin Quad Flat No Lead (VQFN) package, designated as 40ML1, with dimensions 6.0 mm × 6.0 mm × 0.9 mm and 0.50 mm pitch. This package includes an exposed thermal pad and is RoHS-compliant. It differs from the 28-pin thin TSSOP variants offered in the same family.
How does the AT97SC3204-X4A14-10 handle power management in mobile platforms?
The AT97SC3204-X4A14-10 supports dynamic power management via the CLKRUN# signal, which allows the host chipset to gate the 33MHz LCLK during idle periods while preserving internal state. It also features a dedicated SB3V standby supply pin to maintain volatile registers and RNG functionality during clock-stop modes - a key requirement for S3/S4 power states in laptops and ultrabooks.
What cryptographic accelerators are integrated into the AT97SC3204-X4A14-10?
The AT97SC3204-X4A14-10 integrates a hardware asymmetric crypto engine optimized for RSA operations: it performs 2048-bit RSA signatures in ≤200ms and 1024-bit signatures in ≤40ms. It also includes a dedicated SHA-1 accelerator delivering 20μs per 64-byte block. These accelerators operate independently of the onboard AVR RISC CPU and are accessible exclusively through TCG-defined command sets.
AT97SC3204-X4A14-10 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-X4A14-10 FAQ
1.How can I place an order for AT97SC3204-X4A14-10 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT97SC3204-X4A14-10 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-X4A14-10 reliable?
The price and inventory of AT97SC3204-X4A14-10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT97SC3204-X4A14-10 is usually 5 days.
3.What payment methods are accepted for AT97SC3204-X4A14-10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT97SC3204-X4A14-10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT97SC3204-X4A14-10?
AT97SC3204-X4A14-10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT97SC3204-X4A14-10 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-X4A14-10?
For technical support, including AT97SC3204-X4A14-10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT97SC3204-X4A14-10 requirements.
6.How does Aetrix verify that AT97SC3204-X4A14-10 is sourced from the original manufacturer or authorized distributors?
All AT97SC3204-X4A14-10 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-X4A14-10 meets industry standards.
7.What is the process for return or replacement of AT97SC3204-X4A14-10?
All AT97SC3204-X4A14-10 units undergo pre-shipment inspection (PSI). If there is an issue with AT97SC3204-X4A14-10, 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-X4A14-10 part is unused and in its original packaging.
Return procedure for AT97SC3204-X4A14-10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT97SC3204-X4A14-10 Tags
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