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Microchip Technology AT97SC3204-X1A190
- Part No.:
- AT97SC3204-X1A190
- Manufacturer:
- Microchip Technology
- Category:
- Application Specific Microcontrollers
- Package:
- 28-TSSOP (0.240", 6.10mm Width)
- Datasheet:
-
AT97SC3204-X1A190.pdf
- Description:
- IC CRYPTO TPM LPC 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,706
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Product details
Overview
AT97SC3204-X1A190 from Atmel is a TCG TPM 1.2-compliant security IC implementing hardware-accelerated 2048-bit RSA signing (200 ms), SHA-1 acceleration (20 µs/64-byte block), and FIPS 140-2-compliant RNG. It integrates an AVR RISC CPU, internal EEPROM for RSA keys, and 1280-byte user NV storage. Designed for PC platform root-of-trust in BIOS/UEFI environments.
For engineers reviewing the AT97SC3204-X1A190 datasheet, AT97SC3204-X1A190 pinout, AT97SC3204-X1A190 application, or AT97SC3204-X1A190 equivalent, key selection criteria include LPC bus timing compliance, SIRQ/CLKRUN power management support, industrial temperature range (-40°C to +85°C), and secure firmware boot integrity verification capability.
Technical Context
The AT97SC3204-X1A190 implements the full TCG PC Client Specific TPM Interface Specification v1.2 over a 33 MHz LPC bus with dedicated LAD0–LAD3 bidirectional data lines, LFRAME#, LRESET#, and CLKRUN# for dynamic clock gating. It uses on-chip physical security circuitry and tamper-resistant layout to protect cryptographic operations.
Its hardware crypto engine offloads asymmetric key generation and signing from host CPU, while the integrated FIPS 140-2-approved RNG feeds both TCG protocol entropy requirements and system-level random number requests via SERIRQ and GPIO6 control paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| TPM Standard | TCG TPM Specification v1.2 - enables interoperable trusted boot, attestation, and sealed storage in Windows BitLocker and Linux tpm-tools environments. |
| RSA Signature Speed | 2048-bit RSA sign in ≤200 ms - meets TCG latency requirement for platform authentication during POST. |
| LPC Interface | 33 MHz, 4-line (LAD0–LAD3), SIRQ/CLKRUN supported - ensures compatibility with Intel PCH and AMD FCH LPC controllers. |
| RNG Compliance | FIPS 140-2 validated - provides cryptographically secure entropy for key derivation and protocol nonces. |
| Supply Voltage | 3.3 V ±10% - matches standard LPC bus I/O voltage and eliminates level-shifting in motherboard designs. |
| NV Storage | 1280 bytes user-defined - supports persistent policy objects, endorsement keys, and platform configuration registers (PCRs). |
| Operating Temp | -40°C to +85°C - qualified for industrial and extended-temperature PC chassis and embedded server applications. |
Pinout & Package
AT97SC3204-X1A190 is packaged in a 28-lead Thin TSSOP (28A2) measuring 4.4 mm × 9.7 mm with 0.65 mm pitch, RoHS-compliant and lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Main 3.3 V supply | Primary power rail for core logic and crypto engine; requires local 100 nF decoupling. |
| SB3V | Standby 3.3 V supply | Provides backup power to maintain SRAM state and RTC during S3/S4 sleep states. |
| LAD0–LAD3 | LPC bidirectional data | Time-multiplexed command/address/data lines; require 4.7 kΩ pull-up to SB3V per TCG spec. |
| LCLK | 33 MHz LPC clock input | Driven by host PCH; defines maximum transaction rate and timing margins for LPC frame cycles. |
| LRESET# | Active-low reset input | Synchronizes TPM internal state with host platform reset assertion; edge-triggered. |
| SERIRQ | Serialized interrupt request | Open-drain output used to signal TPM events (e.g., command completion) to host LPC controller. |
| CLKRUN# | PCI clock run control | Enables dynamic clock gating during idle periods to reduce platform power consumption in mobile systems. |
| GPIO6 | General-purpose I/O | Configurable as input/output; used for OEM-specific status signaling or debug trace enable. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Asymmetric Crypto Engine | Offloads 2048-bit RSA signing and key generation from host CPU, reducing boot time and eliminating software-side side-channel exposure. |
| Internal EEPROM Key Storage | Stores endorsement key (EK), storage root key (SRK), and migration authorization keys in tamper-resistant nonvolatile memory. |
| Dynamic Key Cache Management | Automatically manages up to 16 loaded keys using TPM_FlushSpecific without host OS intervention or driver overhead. |
| Secure Firmware Boot | Verifies signed firmware image integrity at power-on using immutable ROM bootloader - prevents unauthorized firmware modification. |
| Physical Security Circuitry | Detects voltage, temperature, and frequency tampering; triggers zeroization of sensitive keys upon violation. |
Applications
| Desktop PC Platform Security | Industrial Embedded Control System |
|---|---|
Use Scenario: Enabling Windows BitLocker drive encryption and measured boot on x86 desktop motherboards. IC Role / Device Role / Timing Role: Root-of-trust anchor providing PCR extension, sealed storage, and attestation services during UEFI firmware initialization. Use Value: Ensures disk encryption keys remain inaccessible if platform configuration changes, enforcing hardware-backed policy enforcement. | Use Scenario: Securing firmware updates and runtime integrity checks in programmable logic controllers (PLCs) operating in factory automation. IC Role / Device Role / Timing Role: Trusted execution environment supervisor verifying signed firmware images before loading into main MCU flash. Use Value: Prevents malicious firmware injection during field updates, meeting IEC 62443-3-3 SL2 security requirements. |
| Server Blade Trusted Boot | Medical Imaging Device Authentication |
Use Scenario: Supporting remote attestation and secure boot chain validation across rack-scale server blades in cloud infrastructure. IC Role / Device Role / Timing Role: Hardware-based identity provider generating unique EK and enabling TPM-protected TLS client certificates. Use Value: Enables zero-touch provisioning and continuous trust verification without exposing private keys to hypervisor or guest OS. | Use Scenario: Authenticating DICOM image acquisition modules and validating digital signatures on diagnostic reports in MRI/PET systems. IC Role / Device Role / Timing Role: Cryptographic service module performing HMAC-SHA256 signing of audit logs and DICOM headers. Use Value: Meets FDA 21 CFR Part 11 electronic signature requirements through hardware-enforced key protection and non-repudiation. |
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 SLB9670 | TCG v2.0 compliant; supports ECC and SHA-256; 40-pin QFN only; no 28-pin TSSOP option. | Required for Windows 11 hardware requirements and modern UEFI Secure Boot implementations. | Select when upgrading to TPM 2.0 mandates or ECC-based key agility is needed. |
| Nuvoton NPCT750 | TCG v1.2 compatible; 33 MHz LPC; 28-pin TSSOP available; 1024-bit RSA only (40 ms signing); no FIPS 140-2 RNG certification. | Suitable for cost-sensitive legacy BIOS platforms where full FIPS validation is not required. | Select for budget-constrained industrial PCs where 2048-bit RSA and FIPS RNG are non-critical. |
Compared with SLB9670 and NPCT750, the AT97SC3204-X1A190 delivers certified FIPS 140-2 RNG and 2048-bit RSA performance in a compact 28-pin Thin TSSOP - making it optimal for space-constrained legacy PC platforms requiring TCG v1.2 compliance without v2.0 migration overhead.
Availability
AT97SC3204-X1A190 is available at Aetrix Electronics and suitable for desktop PC motherboard design, industrial PLC security upgrades, and medical imaging device authentication requiring stable component supply and long-term lifecycle support.
Supply support for AT97SC3204-X1A190 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 systems.
The AT97SC3204-X1A190 belongs to Atmel's PC Security product line, engineered specifically to deliver certified, turnkey TPM 1.2 functionality for BIOS-integrated trusted computing in x86 platforms.
FAQ
What is the primary function of the AT97SC3204-X1A190 in a PC platform?
The AT97SC3204-X1A190 serves as a hardware root-of-trust implementing the TCG TPM 1.2 specification. It performs cryptographic operations including 2048-bit RSA signing, SHA-1 hashing, and secure key generation using its FIPS 140-2-compliant RNG. In a PC, the AT97SC3204-X1A190 enables measured boot, BitLocker encryption key sealing, and platform attestation - all critical for establishing hardware-enforced trust during system startup and runtime.
Does the AT97SC3204-X1A190 support both commercial and industrial temperature ranges?
Yes, the AT97SC3204-X1A190 is qualified for both commercial (0°C to +70°C) and industrial (-40°C to +85°C) operating temperature ranges. The X1A190 suffix corresponds to the industrial-grade variant, making the AT97SC3204-X1A190 suitable for deployment in harsh environments such as factory automation controllers, outdoor kiosks, and medical equipment where thermal stability is essential.
What package options are available for the AT97SC3204-X1A190?
The AT97SC3204-X1A190 is offered exclusively in the 28-lead Thin TSSOP (28A2) package - 4.4 mm × 9.7 mm body size with 0.65 mm pitch, RoHS-compliant and lead-free. While the base AT97SC3204 family includes 28A3 (standard TSSOP) and 40ML1 (QFN) variants, the X1A190 ordering code specifically denotes the Thin TSSOP industrial version.
How does the AT97SC3204-X1A190 interface with the host processor?
The AT97SC3204-X1A190 interfaces exclusively via the Low Pin Count (LPC) bus operating at 33 MHz. It uses four bidirectional data lines (LAD0–LAD3), LFRAME#, LCLK, LRESET#, SERIRQ, and CLKRUN# signals to communicate with Intel PCH or AMD FCH chipsets. This direct LPC connection eliminates the need for bridge ICs and ensures deterministic timing for TPM command/response transactions during boot.
Is the AT97SC3204-X1A190 compatible with modern UEFI firmware implementations?
Yes, the AT97SC3204-X1A190 is fully compatible with UEFI firmware that implements the TCG PC Client Specific TPM Interface Specification v1.2. It supports required features including SIRQ-based interrupt signaling, CLKRUN#-enabled power management, and LPC timing compliance. However, it does not support TPM 2.0 features like ECC or SHA-256, so UEFI platforms requiring Windows 11 certification must use a TPM 2.0 device instead of the AT97SC3204-X1A190.
AT97SC3204-X1A190 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- CryptoController™
- Package/Case:
- 28-TSSOP (0.240", 6.10mm Width)
- Packaging:
- Tube
- 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:
- 28-TSSOP
AT97SC3204-X1A190 FAQ
1.How can I place an order for AT97SC3204-X1A190 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT97SC3204-X1A190 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-X1A190 reliable?
The price and inventory of AT97SC3204-X1A190 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT97SC3204-X1A190 is usually 5 days.
3.What payment methods are accepted for AT97SC3204-X1A190?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT97SC3204-X1A190 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT97SC3204-X1A190?
AT97SC3204-X1A190 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT97SC3204-X1A190 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-X1A190?
For technical support, including AT97SC3204-X1A190 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT97SC3204-X1A190 requirements.
6.How does Aetrix verify that AT97SC3204-X1A190 is sourced from the original manufacturer or authorized distributors?
All AT97SC3204-X1A190 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-X1A190 meets industry standards.
7.What is the process for return or replacement of AT97SC3204-X1A190?
All AT97SC3204-X1A190 units undergo pre-shipment inspection (PSI). If there is an issue with AT97SC3204-X1A190, 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-X1A190 part is unused and in its original packaging.
Return procedure for AT97SC3204-X1A190:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT97SC3204-X1A190 Tags
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CYPD3175-24LQXQ
Infineon Technologies
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SLB9672VU20FW1523XTMA1
Infineon Technologies
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SLB9670VQ20FW785XTMA1
Infineon Technologies
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SLB9672XU20FW1523XTMA1
Infineon Technologies
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SLB9673XU20FW2613XTMA1
Infineon Technologies
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CYPD3125-40LQXIT
Infineon Technologies
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AT97SC3204-U2A1A-20
Microchip Technology
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AT97SC3204-U2A1A-10
Microchip Technology
-
SLM9670AQ20FW1311XTMA1
Infineon Technologies
-
SLB9672XU20FW1613XTMA1
Infineon Technologies
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SLB9672AU20FW1613XTMA1
Infineon Technologies
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SLB9673AU20FW2613XTMA1
Infineon Technologies
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