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Microchip Technology AT97SC3205-G3M4510B
- Part No.:
- AT97SC3205-G3M4510B
- Manufacturer:
- Microchip Technology
- Category:
- Application Specific Microcontrollers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
AT97SC3205-G3M4510B.pdf
- Description:
- PROD FF COM SPI TPM 4X4 32VQFN S
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
AT97SC3205-G3M4510B from Microchip (acquired Atmel) is a TCG-compliant Trusted Platform Module (TPM) 1.2 security IC implementing hardware-based cryptographic key generation, storage, and attestation for PC and embedded platforms. It integrates an AVR RISC CPU, FIPS-140-2 certified RNG, AES/SHA/RSA crypto engines, 2066-byte NV user storage, and SPI interface up to 45 MHz.
For engineers reviewing the AT97SC3205-G3M4510B datasheet, AT97SC3205-G3M4510B pinout, AT97SC3205-G3M4510B application, or AT97SC3205-G3M4510B equivalent, this page delivers verified package mapping (32-pad QFN), confirmed SPI-TIS 1.3 compliance, FIPS-140-2 module certification scope, GPIO express functionality, and industrial temperature support (–40°C to +85°C).
Technical Context
The AT97SC3205-G3M4510B implements the full TCG TPM 1.2 specification with hardware-enforced physical security circuitry, dynamic internal RSA key cache management, and secure firmware execution on its integrated AVR 8-bit RISC core. Its crypto engine supports asymmetric RSA key generation (up to 2048-bit), HMAC-SHA-1/SHA-256, and AES-128 encryption.
It operates exclusively via SPI interface (TIS 1.3 compliant) with active-low PIRQ# interrupt signaling, SPI_CS#, SPI_RST#, and dedicated PP/GPIO for hardware physical presence assertion. The device enters low-power state automatically during idle and requires no system intervention for power management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| TCG Compliance | TPM 1.2 Specification and PC Client-Specific TIS 1.3 - ensures interoperability with BIOS/UEFI and OS-level TPM stacks. |
| FIPS Certification | FIPS-140-2 Level 2 certified module - covers RNG, HMAC, AES, SHA, and RSA engines for government and regulated deployments. |
| SPI Interface | Up to 45 MHz clock rate (typical PC range: 24–33 MHz) - enables high-throughput command/response cycles without bus contention. |
| Supply Voltage | 3.3 V ±10% - requires tight decoupling (2200–4700 pF near each VCC pin, <5 mm to adjacent GND) for stable cryptographic operation. |
| Temperature Range | –40°C to +85°C industrial grade - validated for extended thermal cycling in embedded control and server motherboard environments. |
| NV Storage | 2066 bytes user-defined data space - supports persistent platform configuration, sealed storage, and policy enforcement across reboots. |
| Package | 32-pad QFN (4.0 × 4.0 × 0.9 mm, 0.4 mm pitch) - surface-mount compatible with automated assembly and thermal pad grounding for EMI control. |
Pinout & Package
AT97SC3205-G3M4510B uses the 32-pad Very Thin QFN (32M3) package: 4.0 × 4.0 × 0.9 mm body, 0.4 mm lead pitch, exposed thermal pad tied internally to GND. Pin 1 marked by corner chamfer; substrate center pad must be connected to system ground for optimal thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | 3.3 V main supply; two pins require individual 2200–4700 pF bypass capacitors placed ≤5 mm from each VCC–GND pair. |
| GND | Ground reference | Four dedicated GND pins plus exposed thermal pad (internally connected to GND) - critical for noise immunity and RNG stability. |
| MISO / MOSI / SPI_CLK / SPI_CS# / SPI_RST# / PIRQ# | SPI interface signals | Full TIS 1.3-compliant SPI slave interface; PIRQ# is active-low interrupt for command completion or error reporting. |
| PP/GPIO | Hardware Physical Presence indicator | Active-high signal used by BIOS to detect physical tamper or admin override; internal pull-down - float if unused. |
| GPIO Express-00 | Dedicated NV-indexed GPIO | Maps to TPM_NV_INDEX_GPIO_00; internal pull-up - serves as XOR chain output in test mode; default input mode. |
| TestBI/GPIO/XTamper | Multi-function terminal | Configurable as GPIO, external tamper detection input (active high), or manufacturing test pin; tie to GND via 4.7 kΩ if unused. |
Key Features
| Feature | Design Value |
|---|---|
| Single-chip TPM 1.2 solution | Integrates CPU, crypto engines, EEPROM key storage, RNG, and SPI interface - eliminates external firmware loading and reduces BOM count. |
| FIPS-140-2 Level 2 certified | Certification covers RNG entropy quality, AES/SHA/RSA algorithm implementation, and physical security countermeasures - meets federal and enterprise security mandates. |
| Hardware Physical Presence (PP) | PP/GPIO pin provides BIOS-enforceable hardware-level confirmation before sensitive operations (e.g., clearing owner hierarchy) - prevents remote privilege escalation. |
| 2066-byte user NV space | Non-volatile storage accessible via TCG commands - enables platform-specific sealing, measured boot logs, and persistent policy enforcement without host OS dependency. |
| Industrial temperature support | Validated operation from –40°C to +85°C - suitable for deployment in network infrastructure, industrial PCs, and edge servers where ambient conditions exceed commercial limits. |
Applications
| Server Motherboard Security | Embedded Industrial Control |
|---|---|
|
Use Scenario: Secure boot and firmware integrity verification on x86 server motherboards. IC Role / Device Role / Timing Role: TPM 1.2 root-of-trust enforcing measured boot chain, storing PCR values, and signing attestation reports. Use Value: Prevents unauthorized firmware modification and enables remote attestation of hardware/software state to cloud management platforms. |
Use Scenario: Secure firmware update and device identity binding in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Cryptographic key vault and secure boot enforcer - validates signed firmware images before execution. Use Value: Ensures only authenticated updates execute, mitigating supply-chain compromise and enabling OEM-controlled lifecycle management. |
| Thin Client Authentication | Medical Imaging Device Trust Anchor |
|
Use Scenario: User credential protection and session key derivation in zero-client endpoints. IC Role / Device Role / Timing Role: Hardware-backed key generation and storage for TLS client certificates and disk encryption keys. Use Value: Eliminates software-only key exposure risk; enables HIPAA-compliant data-at-rest and data-in-transit protection without performance penalty. |
Use Scenario: Regulatory compliance and anti-counterfeiting in FDA-cleared diagnostic imaging systems. IC Role / Device Role / Timing Role: Immutable device identity anchor and secure audit log storage for DICOM metadata integrity. Use Value: Provides verifiable chain-of-custody for image acquisition timestamps and operator authentication - satisfies 21 CFR Part 11 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TPM security applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Infineon SLB9670 | TPM 2.0 compliant; supports ECC and SHA-256 natively; larger 48-pin TQFP package; higher max SPI speed (66 MHz). | Required for Windows 11 and modern UEFI firmware; not backward-compatible with legacy TPM 1.2 BIOS stacks. | Select when upgrading to TPM 2.0 mandates or requiring ECC-based attestation; verify BIOS/firmware compatibility first. |
| Nuvoton NPCT750 | TPM 1.2 compliant; 32-pin QFN same footprint; lower max SPI speed (33 MHz); no FIPS-140-2 certification. | Cost-optimized alternative where FIPS validation is not required and existing 32-pin QFN layout can be reused. | Choose for commercial-grade deployments with relaxed certification needs; confirm RNG entropy and physical security meet your threat model. |
Compared with SLB9670 and NPCT750, AT97SC3205-G3M4510B uniquely combines FIPS-140-2 Level 2 certification, industrial temperature rating, and TIS 1.3 SPI compliance in a compact 32-pad QFN - making it the preferred choice for legacy TPM 1.2 systems requiring regulatory validation and extended environmental operation.
Availability
AT97SC3205-G3M4510B is available at Aetrix Electronics and suitable for server motherboard design, industrial PLC integration, thin client authentication, and medical imaging device development requiring stable component supply and long-term lifecycle assurance.
Supply support for AT97SC3205-G3M4510B 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 full product support, documentation, and manufacturing continuity for the AT97SC3205 family.
The AT97SC3205 belongs to Atmel's trusted computing product line, designed specifically to deliver certified, single-chip TPM 1.2 solutions for PC, server, and industrial embedded platforms requiring hardware-rooted security.
FAQ
What is the operating voltage range for the AT97SC3205-G3M4510B?
The AT97SC3205-G3M4510B operates at a nominal supply voltage of 3.3 V with a tolerance of ±10%, meaning it functions reliably between 2.97 V and 3.63 V. Stable regulation and proper decoupling-using 2200–4700 pF capacitors placed within 5 mm of each VCC–GND pair-are mandatory to maintain FIPS-140-2 RNG entropy integrity and prevent cryptographic failures during voltage transients.
Does the AT97SC3205-G3M4510B support TPM 2.0?
No, the AT97SC3205-G3M4510B implements only the TCG TPM 1.2 specification and associated TIS 1.3 interface. It does not support TPM 2.0 algorithms (e.g., ECC), commands, or authorization structures. For TPM 2.0 compliance, Microchip recommends evaluating the SLB9670 or newer Infineon OPTIGA TPM series - the AT97SC3205-G3M4510B remains fully supported for legacy TPM 1.2 deployments.
What is the purpose of the PP/GPIO pin on the AT97SC3205-G3M4510B?
The PP/GPIO pin on the AT97SC3205-G3M4510B serves as the Hardware Physical Presence indicator - an active-high signal used by BIOS/UEFI firmware to detect physical administrator intervention before executing privileged operations like clearing the TPM owner hierarchy. Its internal pull-down resistor ensures safe default behavior; the pin must be asserted high only during authorized physical maintenance events.
Is the AT97SC3205-G3M4510B FIPS-140-2 certified?
Yes, the AT97SC3205-G3M4510B is a FIPS-140-2 Level 2 certified cryptographic module. Certification explicitly covers its hardware random number generator (RNG), HMAC, AES-128, SHA-1/SHA-256, and RSA-2048 engines - validating implementation correctness, physical security mechanisms, and key management robustness per NIST requirements.
Can the AT97SC3205-G3M4510B be used in automotive applications?
No, the AT97SC3205-G3M4510B is not qualified for automotive applications. Microchip explicitly states that Atmel products-including the AT97SC3205 family-are not designed, tested, or warranted for use in automotive environments unless specifically designated as automotive-grade. This part is rated for industrial (–40°C to +85°C) and commercial temperature ranges only.
AT97SC3205-G3M4510B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Applications:
- Trusted Platform Module (TPM)
- Core Processor:
- AVR
- Program Memory Type:
- EEPROM
- Controller Series:
- -
- RAM Size:
- -
- Interface:
- SPI
- Number of I/O:
- 4
- Voltage - Supply:
- 3.3V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-VQFN (4x4)
AT97SC3205-G3M4510B FAQ
1.How can I place an order for AT97SC3205-G3M4510B through Aetrix?
Please submit a Request for Quotation (RFQ) for AT97SC3205-G3M4510B 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 AT97SC3205-G3M4510B reliable?
The price and inventory of AT97SC3205-G3M4510B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT97SC3205-G3M4510B is usually 5 days.
3.What payment methods are accepted for AT97SC3205-G3M4510B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT97SC3205-G3M4510B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT97SC3205-G3M4510B?
AT97SC3205-G3M4510B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT97SC3205-G3M4510B 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 AT97SC3205-G3M4510B?
For technical support, including AT97SC3205-G3M4510B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT97SC3205-G3M4510B requirements.
6.How does Aetrix verify that AT97SC3205-G3M4510B is sourced from the original manufacturer or authorized distributors?
All AT97SC3205-G3M4510B 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 AT97SC3205-G3M4510B meets industry standards.
7.What is the process for return or replacement of AT97SC3205-G3M4510B?
All AT97SC3205-G3M4510B units undergo pre-shipment inspection (PSI). If there is an issue with AT97SC3205-G3M4510B, 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 AT97SC3205-G3M4510B part is unused and in its original packaging.
Return procedure for AT97SC3205-G3M4510B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT97SC3205-G3M4510B Tags
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CYPD3175-24LQXQ
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SLB9672VU20FW1523XTMA1
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SLB9670VQ20FW785XTMA1
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SLB9672XU20FW1523XTMA1
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SLB9673XU20FW2613XTMA1
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CYPD3125-40LQXIT
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AT97SC3204-U2A1A-20
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AT97SC3204-U2A1A-10
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SLM9670AQ20FW1311XTMA1
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SLB9672XU20FW1613XTMA1
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SLB9672AU20FW1613XTMA1
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SLB9673AU20FW2613XTMA1
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