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Microchip Technology AT97SC3204-X1M90
- Part No.:
- AT97SC3204-X1M90
- Manufacturer:
- Microchip Technology
- Category:
- Application Specific Microcontrollers
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
AT97SC3204-X1M90.pdf
- Description:
- IC CRYPTO TPM LPC 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,953
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Product details
Overview
AT97SC3204-X1M90 from Atmel is a TCG TPM 1.2-compliant security IC implementing hardware-accelerated 2048-bit RSA signing (200ms), SHA-1 acceleration (20µs/64-byte block), and FIPS 140-2–compliant true RNG. It integrates an AVR RISC CPU, internal EEPROM for RSA keys, and 1280 bytes of user NV storage. Designed for PC platform root-of-trust in BIOS/firmware stacks.
For engineers reviewing the AT97SC3204-X1M90 datasheet, AT97SC3204-X1M90 pinout, AT97SC3204-X1M90 application, or AT97SC3204-X1M90 equivalent, this page delivers verified LPC interface timing, TSSOP/QFN package mapping, TCG 1.2 command compliance, secure key lifecycle management, and industrial temperature support (−40°C to +85°C).
Technical Context
The AT97SC3204-X1M90 implements the full TCG PC Client Specific TPM Interface Specification v1.2 over a 33MHz LPC bus with SIRQ and CLKRUN# support for power-managed mobile platforms. Its hardware crypto engine offloads RSA-2048 signature generation and SHA-1 hashing without host CPU intervention.
Internal architecture includes dedicated physical security circuitry, dynamic key cache management via TPM_FlushSpecific/TPM_LoadKey2 commands, and on-chip EEPROM for persistent key storage. The FIPS 140-2–validated RNG feeds both TCG protocol entropy requirements and system-level random number requests.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| TCG Compliance | Full TPM 1.2 implementation per TCG PC Client Specific Interface Spec v1.2 |
| RSA Performance | 2048-bit signature in 200ms; enables secure boot attestation within firmware time budgets |
| SHA-1 Throughput | 20µs per 64-byte block; supports rapid hash chaining for PCR extension |
| LPC Interface | 33MHz bus with LAD[3:0], LFRAME#, LCLK, SIRQ, CLKRUN# - matches Intel PCH LPC timing |
| Secure Storage | 1280 bytes NV user space + dedicated EEPROM for RSA private keys - isolated from host OS access |
| Operating Range | −40°C to +85°C industrial grade - qualified for embedded control and server motherboard deployment |
| Supply Voltage | 3.3V ±10% - compatible with standard LPC I/O rail without level-shifting |
Pinout & Package
AT97SC3204-X1M90 is packaged in a 28-lead Thin TSSOP (28A2, 4.4 mm × 9.7 mm, 0.65 mm pitch) per JEDEC MO-153 Variation AE. Pin functions are validated per Atmel document 5294BS–TPM–9/10.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Primary Power Supply | 3.3V core and I/O supply; decoupling required per LPC noise specs |
| SB3V | Standby Power Rail | Maintains RTC and state retention during S3/S4 sleep; separate from VCC |
| LAD0–LAD3 | LPC Data/Address Bus | Time-multiplexed bidirectional lines; support burst transfers per LPC spec |
| LFRAME# | LPC Frame Strobe | Active-low signal indicating start/end of LPC transaction cycle |
| SERIRQ | Serialized Interrupt Request | Open-drain IRQ line shared across LPC peripherals; requires pull-up |
| LRESET# | PCI Reset Input | Asynchronous active-low reset synchronized to LPC clock domain |
| CLKRUN# | PCI Clock Run Control | Enables clock gating for power savings in mobile platforms per ACPI spec |
| GPIO6 | General Purpose I/O | Configurable as input/output; used for OEM-specific status signaling or debug |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Asymmetric Crypto Engine | Offloads RSA-2048 signing and key generation from host CPU - reduces boot latency and prevents software side-channel leakage |
| FIPS 140-2 Compliant RNG | True entropy source validated for cryptographic key derivation and TCG protocol randomness - meets NIST SP 800-90A requirements |
| Dynamic Key Cache Management | Automatic internal handling of multiple loaded keys via TPM_FlushSpecific - eliminates host driver complexity for key eviction |
| LPC Power Management Support | CLKRUN# and SIRQ enable full ACPI-compliant low-power states - critical for laptop and thin-client platforms |
| Secure Firmware Integration | Factory-programmed TCG-compliant firmware with tamper-resistant update mechanism - no field reflash required for standard use |
Applications
| PC Platform Root-of-Trust | Industrial Control System Security |
|---|---|
Use Scenario: Secure boot chain enforcement and measured boot log (PCR) recording on x86 desktop/laptop motherboards. IC Role / Device Role / Timing Role: TPM 1.2 root-of-trust anchor interfacing directly to PCH via LPC; responds to BIOS-initiated TCG commands during POST. Use Value: Enables Windows BitLocker and Linux IMA/EVM integrity verification by providing cryptographically signed PCR values and sealed key storage. | Use Scenario: Firmware authentication and secure remote firmware update in programmable logic controllers (PLCs) and HMIs. IC Role / Device Role / Timing Role: Standalone secure element managing code signature verification and decryption keys; operates independently of main MCU over LPC or GPIO handshake. Use Value: Prevents unauthorized firmware modification using hardware-bound RSA signatures and protected NV storage for update certificates. |
| Server BMC Authentication | Embedded Medical Device Integrity |
Use Scenario: Secure credential storage and TLS key generation for IPMI-over-LAN in server baseboard management controllers. IC Role / Device Role / Timing Role: Dedicated security co-processor connected to BMC's LPC interface; isolates private key material from BMC firmware attack surface. Use Value: Provides hardware-enforced key protection for out-of-band management sessions - mitigates credential theft in datacenter environments. | Use Scenario: Regulatory-compliant audit logging and software integrity attestation in FDA-cleared diagnostic imaging equipment. IC Role / Device Role / Timing Role: Trusted execution environment for cryptographic operations tied to device identity; stores manufacturer-signed calibration certificates in protected NV memory. Use Value: Meets IEC 62304 and HIPAA requirements for immutable log generation and secure boot verification without exposing keys to application layer. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TPM 1.2 security applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Infineon SLB9665TT2.0 | Same TCG 1.2 compliance; 2048-bit RSA in 180ms; uses SPI instead of LPC; QFN40 package only | Requires SPI host controller and board-level level-shifting for 3.3V I/O; no CLKRUN# support | Select when SPI interface is preferred and LPC routing is constrained; verify BIOS driver compatibility |
| Nuvoton NPCT650KB0DX | TCG 1.2 compliant; 2048-bit RSA in 220ms; supports both LPC and eSPI; 28-pin TSSOP available | eSPI option enables modern PCH integration; lacks SB3V standby rail for deep-sleep retention | Choose for next-gen platforms migrating from LPC to eSPI; confirm eSPI firmware stack readiness |
Compared with SLB9665TT2.0 and NPCT650KB0DX, the AT97SC3204-X1M90 provides native LPC timing alignment with legacy and current Intel PCHs, integrated SB3V for S3/S4 retention, and factory-provisioned TCG firmware requiring zero host-side initialization - reducing BIOS integration effort.
Availability
AT97SC3204-X1M90 is available at Aetrix Electronics and suitable for PC motherboard design, industrial PLC security upgrades, and server BMC authentication requiring stable component supply and long-term industrial temperature support.
Supply support for AT97SC3204-X1M90 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 company specializing in microcontrollers, nonvolatile memory, and security ICs for embedded systems.
The AT97SC3204-X1M90 belongs to Atmel's PC Security product line, engineered specifically to deliver certified, drop-in TPM 1.2 functionality for BIOS/firmware developers needing hardware-rooted trust without custom crypto firmware development.
FAQ
What is the primary interface protocol supported by the AT97SC3204-X1M90?
The AT97SC3204-X1M90 uses the Low Pin Count (LPC) bus operating at 33MHz, fully compliant with the TCG PC Client Specific TPM Interface Specification v1.2. It supports LAD[3:0], LFRAME#, LCLK, SERIRQ, CLKRUN#, and LRESET# signals - matching standard Intel PCH LPC timing requirements. No SPI or I²C interface is implemented in the AT97SC3204-X1M90.
Does the AT97SC3204-X1M90 support industrial temperature operation?
Yes, the AT97SC3204-X1M90 is qualified for industrial temperature range (−40°C to +85°C), as confirmed in Atmel's ordering information table and revision history. This makes it suitable for deployment in server motherboards, industrial PLCs, and medical devices where extended thermal stability is required - distinct from commercial-grade variants limited to 0°C–70°C.
How does the AT97SC3204-X1M90 handle RSA key storage and management?
The AT97SC3204-X1M90 includes internal EEPROM dedicated to storing RSA private keys, with automatic key cache management via TCG commands like TPM_FlushSpecific and TPM_LoadKey2. Keys never leave the secure boundary, and the AT97SC3204-X1M90 enforces strict access controls - eliminating need for host-side key scheduling logic or external secure memory.
Is the AT97SC3204-X1M90 FIPS 140-2 validated?
The AT97SC3204-X1M90 incorporates a FIPS 140-2–compliant True Random Number Generator (RNG), explicitly stated in its features list and block diagram documentation. While the full module is not FIPS-certified as a standalone cryptographic module, its RNG subsystem meets FIPS 140-2 Annex C requirements for entropy sources used in TCG-compliant key generation and protocol operations.
What package options are available for the AT97SC3204-X1M90?
The AT97SC3204-X1M90 is offered in three RoHS-compliant packages: 28-lead Thin TSSOP (28A2), 28-lead standard TSSOP (28A3), and 40-lead QFN (40ML1). The X1M90 suffix corresponds to the 28A2 Thin TSSOP variant (4.4 mm × 9.7 mm, 0.65 mm pitch), as defined in Atmel's ordering information and package drawings.
AT97SC3204-X1M90 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- CryptoController™
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Obsolete
- 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-X1M90 FAQ
1.How can I place an order for AT97SC3204-X1M90 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT97SC3204-X1M90 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-X1M90 reliable?
The price and inventory of AT97SC3204-X1M90 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT97SC3204-X1M90 is usually 5 days.
3.What payment methods are accepted for AT97SC3204-X1M90?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT97SC3204-X1M90 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT97SC3204-X1M90?
AT97SC3204-X1M90 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT97SC3204-X1M90 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-X1M90?
For technical support, including AT97SC3204-X1M90 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT97SC3204-X1M90 requirements.
6.How does Aetrix verify that AT97SC3204-X1M90 is sourced from the original manufacturer or authorized distributors?
All AT97SC3204-X1M90 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-X1M90 meets industry standards.
7.What is the process for return or replacement of AT97SC3204-X1M90?
All AT97SC3204-X1M90 units undergo pre-shipment inspection (PSI). If there is an issue with AT97SC3204-X1M90, 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-X1M90 part is unused and in its original packaging.
Return procedure for AT97SC3204-X1M90:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT97SC3204-X1M90 Tags
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CYPD3175-24LQXQ
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SLB9672VU20FW1523XTMA1
Infineon Technologies
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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
Microchip Technology
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SLM9670AQ20FW1311XTMA1
Infineon Technologies
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SLB9672XU20FW1613XTMA1
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SLB9672AU20FW1613XTMA1
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SLB9673AU20FW2613XTMA1
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