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Microchip Technology AT97SC3204-X4A13-10
- Part No.:
- AT97SC3204-X4A13-10
- Manufacturer:
- Microchip Technology
- Category:
- Application Specific Microcontrollers
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT97SC3204-X4A13-10.pdf
- Description:
- IC CRYPTO TPM LPC 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,716
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Product details
Overview
AT97SC3204-X4A13-10 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 - deployed for secure boot and platform integrity verification in desktop and notebook PCs.
For engineers reviewing the AT97SC3204-X4A13-10 datasheet, AT97SC3204-X4A13-10 pinout, AT97SC3204-X4A13-10 application, or AT97SC3204-X4A13-10 equivalent, key selection criteria include LPC bus timing compliance, industrial temperature range (-40°C to +85°C), 40-pin QFN package, 3.3V supply, and NV storage capacity of 1756 bytes for user-defined data.
Technical Context
The AT97SC3204-X4A13-10 implements a full TCG TPM 1.2 stack in silicon, integrating a dedicated cryptographic accelerator supporting 1024-bit RSA signing in 40ms and SHA-1 acceleration at 20μs per 64-byte block. Its internal EEPROM stores RSA keys and supports dynamic key cache management via TPM_FlushSpecific and TPM_LoadKey2 commands.
Communication occurs over a 33MHz Low Pin Count (LPC) bus with SIRQ interrupt support and CLKRUN# clock gating for power optimization in mobile platforms. The device uses dual supply rails (VCC and SB3V), includes GPIO-Express-00 for system-level control, and incorporates physical security circuitry to resist tampering and side-channel attacks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| TCG Compliance | Fully compliant with TPM 1.2 and PC Client TIS 1.2 - enables interoperable trusted computing across BIOS, OS, and firmware layers. |
| RSA Performance | 2048-bit RSA signature in 200ms - meets TCG latency requirements for secure boot attestation and key sealing. |
| RNG Certification | FIPS 140-2–compliant hardware RNG - provides cryptographically secure entropy for key generation and protocol nonces. |
| LPC Interface | 33MHz synchronous LPC bus with LAD[3:0], LFRAME#, LCLK, SERIRQ, and CLKRUN# - integrates directly into standard PC chipset LPC root complex. |
| Nonvolatile Storage | 1756 bytes of user-defined NV space - supports persistent policy objects, sealed data, and custom TPM-managed credentials. |
| Operating Range | -40°C to +85°C industrial grade - ensures reliable operation in embedded systems and ruggedized computing environments. |
| Supply Voltage | 3.3V ±10% (VCC) with standby rail SB3V - compatible with standard LPC platform power domains. |
Pinout & Package
AT97SC3204-X4A13-10 is packaged in a 40-pad QFN (6.0mm × 6.0mm body, 0.50mm pitch), pin-compatible with the 40ML1 footprint. This variant supports industrial temperature operation and includes all LPC interface signals, GPIO, and dedicated test pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Main power supply | 3.3V core and I/O rail; requires local decoupling per LPC specification. |
| SB3V | Standby power supply | Maintains RTC and state retention during S3/S4 sleep states; isolated from VCC. |
| LAD0–LAD3 | LPC bidirectional data/address bus | Time-multiplexed command/address/data lines; operate at 33MHz with strict setup/hold timing. |
| 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; requires external pull-up; supports level-sensitive assertion per TIS 1.2. |
| CLKRUN# | LPC clock run control | Enables dynamic clock gating for power savings; asserted by host to resume LPC clock after stop. |
| GPIO-Express-00 | General-purpose I/O | Configurable as input/output per TPM_NV_INDEX_GPIO_00; used for platform-specific signaling or status reporting. |
| LRESET# | LPC reset input | Asynchronous active-low reset; resets internal state machine and crypto engine without affecting NV memory. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware crypto accelerator | Offloads RSA and SHA-1 operations from host CPU, reducing boot time and eliminating software-side timing vulnerabilities. |
| Integrated AVR RISC processor | Executes TPM firmware natively on-chip, enabling field-upgradable security logic without external code execution. |
| Internal EEPROM key storage | Stores multiple RSA key pairs securely in tamper-resistant memory; no external flash required for key persistence. |
| Physical security circuitry | Detects and responds to environmental tampering (voltage glitching, temperature extremes, light exposure) by zeroizing sensitive keys. |
| LPC power management | Supports CLKRUN#-driven clock stopping and SB3V-powered retention mode - essential for ACPI-compliant mobile platforms. |
Applications
| Secure Boot Verification | Platform Integrity Attestation |
|---|---|
Use Scenario: Verifying firmware hash chain from ROM to OS loader during POST. IC Role / Device Role / Timing Role: TPM acts as root-of-trust for measurement and signature validation; performs SHA-1 hashing and RSA signature verification within defined latency windows. Use Value: Prevents unauthorized firmware modification by binding boot measurements to hardware-bound keys stored in internal EEPROM. | Use Scenario: Reporting PCR values to remote server for infrastructure compliance auditing. IC Role / Device Role / Timing Role: Generates signed quotes of Platform Configuration Registers using 2048-bit RSA private key; operates under strict TCG protocol timing constraints. Use Value: Enables verifiable proof of unmodified system state without exposing private keys or sensitive platform data. |
| Full Disk Encryption Key Binding | BIOS Password Protection Enforcement |
Use Scenario: Sealing BitLocker or LUKS encryption keys to specific hardware and boot configuration. IC Role / Device Role / Timing Role: TPM performs key sealing/unsealing using PCR-bound policies; leverages NV storage to persist encrypted blobs across reboots. Use Value: Ensures disk decryption only occurs when platform integrity matches pre-established PCR values - blocking cold-boot and offline attacks. | Use Scenario: Enforcing BIOS-level password protection with tamper-evident lockout behavior. IC Role / Device Role / Timing Role: TPM manages password attempt counters and lockout timers in secure NV memory; triggers zeroization after threshold violations. Use Value: Prevents brute-force BIOS password recovery by enforcing hardware-enforced lockout and key destruction - independent of OS or firmware implementation flaws. |
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 spec; higher RSA throughput (2048-bit sign in ~120ms); uses SPI instead of LPC interface. | Requires SPI-capable chipset and updated BIOS driver stack; not drop-in LPC replacement. | Select for new designs targeting TPM 2.0 compliance and enhanced algorithm agility (ECC, SHA-256). |
| Nuvoton NPCT750YAXX | TPM 1.2 compliant; identical LPC interface and 40-pin QFN package; lower max operating temperature (0°C to 70°C commercial grade only). | Limited to commercial temperature range; lacks industrial-grade qualification for extended thermal environments. | Select when cost sensitivity outweighs industrial temp requirement and existing LPC layout matches 40-pin QFN footprint. |
Compared with SLB9665TT2.0 and NPCT750YAXX, AT97SC3204-X4A13-10 uniquely delivers industrial temperature support (-40°C to +85°C) with full TCG 1.2 LPC compatibility in a 40-pin QFN, making it optimal for ruggedized client and embedded systems where legacy BIOS integration and thermal resilience are mandatory.
Availability
AT97SC3204-X4A13-10 is available at Aetrix Electronics and suitable for secure boot verification, platform integrity attestation, and full-disk encryption key binding requiring stable component supply across industrial temperature environments.
Supply support for AT97SC3204-X4A13-10 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 and industrial applications.
The AT97SC3204 product line delivers turnkey TPM 1.2 modules designed specifically for PC client platforms and embedded systems requiring hardware-rooted trust, cryptographic acceleration, and LPC bus integration without external firmware dependencies.
FAQ
What is the primary compliance standard met by the AT97SC3204-X4A13-10?
The AT97SC3204-X4A13-10 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. It also meets FIPS 140-2 requirements for its internal Random Number Generator. These certifications ensure interoperability with standard BIOS implementations, Windows Trusted Boot, and enterprise security management frameworks that rely on TPM 1.2 functionality.
Does the AT97SC3204-X4A13-10 support industrial temperature operation?
Yes, the AT97SC3204-X4A13-10 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 X4A13-10 variant, making it suitable for deployment in ruggedized PCs, industrial controllers, and embedded systems exposed to extended thermal environments.
What package type is used for the AT97SC3204-X4A13-10?
The AT97SC3204-X4A13-10 uses a 40-pad Very-thin Quad Flat No Lead (VQFN) package, designated as 40ML1, with 6.0mm × 6.0mm body dimensions and 0.50mm pitch. This package is mechanically and electrically distinct from the 28-pin TSSOP variants and is specified in the official Atmel package drawings for industrial-grade ordering codes.
How does the AT97SC3204-X4A13-10 handle cryptographic key storage?
The AT97SC3204-X4A13-10 stores RSA keys in internal EEPROM memory that is physically isolated and protected by tamper-detection circuitry. Keys are never exposed outside the die boundary, and the device supports dynamic key caching managed autonomously via TPM_FlushSpecific and TPM_LoadKey2 commands - eliminating host software involvement in key lifecycle management.
What is the role of the SB3V pin on the AT97SC3204-X4A13-10?
The SB3V pin on the AT97SC3204-X4A13-10 provides a dedicated 3.3V standby power rail that maintains internal state-including RTC and NV memory contents-during system suspend-to-RAM (S3) or hibernate (S4) states. Unlike VCC, SB3V remains active when main power is removed, enabling secure wake-event handling and persistent TPM state across low-power modes without relying on host-controlled power sequencing.
AT97SC3204-X4A13-10 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-X4A13-10 FAQ
1.How can I place an order for AT97SC3204-X4A13-10 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT97SC3204-X4A13-10 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-X4A13-10 reliable?
The price and inventory of AT97SC3204-X4A13-10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT97SC3204-X4A13-10 is usually 5 days.
3.What payment methods are accepted for AT97SC3204-X4A13-10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT97SC3204-X4A13-10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT97SC3204-X4A13-10?
AT97SC3204-X4A13-10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT97SC3204-X4A13-10 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-X4A13-10?
For technical support, including AT97SC3204-X4A13-10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT97SC3204-X4A13-10 requirements.
6.How does Aetrix verify that AT97SC3204-X4A13-10 is sourced from the original manufacturer or authorized distributors?
All AT97SC3204-X4A13-10 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-X4A13-10 meets industry standards.
7.What is the process for return or replacement of AT97SC3204-X4A13-10?
All AT97SC3204-X4A13-10 units undergo pre-shipment inspection (PSI). If there is an issue with AT97SC3204-X4A13-10, 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-X4A13-10 part is unused and in its original packaging.
Return procedure for AT97SC3204-X4A13-10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT97SC3204-X4A13-10 Tags
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