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Texas Instruments TUSB6250PFC
- Part No.:
- TUSB6250PFC
- Manufacturer:
- Texas Instruments
- Category:
- Specialized
- Package:
- 80-TQFP
- Datasheet:
-
TUSB6250PFC.pdf
- Description:
- IC INTERFACE SPECIALIZED 80TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,931
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Product details
Overview
TUSB6250PFC from Texas Instruments is a USB 2.0 to ATA/ATAPI bridge controller IC integrating a USB 2.0 UTMI-compliant PHY, parallel interface engine (PIE), USB buffer manager, 8051-based MCU, and ATA/ATAPI interface controller. It supports USB 2.0 high-speed (480 Mbps) operation, ATA/ATAPI-6 compliant PIO modes 0–4 and Ultra DMA modes 0–5, and operates from a single 3.3-V supply. It enables compact flash card readers and external storage enclosures.
For engineers reviewing the TUSB6250PFC datasheet, TUSB6250PFC pinout, TUSB6250PFC application, or TUSB6250PFC equivalent, key selection criteria include its integrated 8051 MCU with 16 KB ROM and 256-byte RAM, dual-interface timing control for USB and ATA/ATAPI, die-ID-based USB serial number generation, and support for 80-pin TQFP packaging with 5-V-tolerant I/O buffers.
Technical Context
The TUSB6250PFC implements a dual-bus architecture where the USB 2.0 UTMI PHY interfaces with host systems via high-speed differential signaling, while the ATA/ATAPI controller manages legacy storage devices using parallel command and data transfers. Its embedded 8051 MCU executes firmware to coordinate data flow between USB endpoints and ATA sector FIFOs.
Timing is managed through dedicated registers for PIO assertion/recovery (PIOSPAS/PIOSPRC) and DMA assertion/recovery (DMASPAS/DMASPRC), enabling precise compliance with ATA/ATAPI-6 timing requirements. The device supports unique power-on sequencing to storage devices and provides hardware-level USB suspend/wake-up handling via WAKCLK interrupt and USBWKUP register.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Interface | USB 2.0 high-speed (480 Mbps) with UTMI-compliant PHY and parallel interface engine |
| ATA/ATAPI Support | ATA/ATAPI-6 compliant; PIO modes 0–4 and Ultra DMA modes 0–5 |
| MCU Core | Enhanced 8051 microcontroller with 16 KB on-chip ROM and 256-byte RAM |
| Supply Voltage | Single 3.3 V ±5% supply for core logic; I/O buffers are 5-V tolerant |
| Package | 80-pin TQFP (12 mm × 12 mm, 0.5 mm pitch) with exposed thermal pad |
| Serial Number | Die-ID based USB device serial number stored in SERNUM0–SERNUM5 registers |
| Interrupt Sources | Dedicated vector interrupt register (VECINT), USB, ATA/ATAPI, and MCU timer interrupts |
Pinout & Package
Package: 80-pin TQFP (Thin Quad Flat Package), 12 mm × 12 mm body, 0.5 mm lead pitch, thermally enhanced with exposed pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD33 | Core power supply | 3.3-V supply input for internal logic; requires local decoupling |
| VDD50 | I/O power supply | 5-V supply for 5-V-tolerant ATA/ATAPI and GPIO pins |
| USB_DP / USB_DM | USB 2.0 differential pair | High-speed (480 Mbps) bidirectional USB data lines; require 90-Ω differential impedance routing |
| ATA_D0–ATA_D15 | ATA data bus | 16-bit bidirectional parallel data path for ATA/ATAPI command and data transfers |
| ATA_CS0 / ATA_CS1 | Chip select signals | Active-low selects master/slave device on ATA bus; decoded from address lines |
| RESET_N | Active-low reset input | Synchronizes internal state machines; requires 10-ms minimum pulse width per datasheet |
| XTAL_IN / XTAL_OUT | Crystal oscillator interface | Supports 12-MHz fundamental-mode crystal for USB clock generation and MCU timing |
Key Features
| Feature | Design Value |
|---|---|
| Integrated USB 2.0 PHY + PIE | Eliminates need for external transceiver; handles packet parsing, CRC, and endpoint buffering |
| ATA/ATAPI Power-On Sequencing | Hardware-controlled staggered power-up of storage device signals prevents bus contention during initialization |
| Die-ID Based Serial Number | Provides unique, factory-programmed USB device serial number without external EEPROM |
| Configurable GPIO Ports | Port 2 and Port 3 support programmable pullup/pulldown resistors via PUPDSLCT_P2/P3 registers |
| I²C Interface Controller | Enables communication with external EEPROM or sensors using standard I²C protocol (7-bit addressing) |
Applications
| CompactFlash Card Reader | External SATA-to-USB Adapter |
|---|---|
Use Scenario: Embedded reader for industrial data loggers reading CF cards via USB host. IC Role / Device Role / Timing Role: Bridge controller managing USB enumeration, ATA command translation, and sector FIFO buffering. Use Value: Enables direct CF card access over USB 2.0 without host driver modification; supports UDMA Mode 5 (100 MB/s burst). | Use Scenario: Consumer-grade external enclosure converting 2.5-inch ATA hard drives to USB interface. IC Role / Device Role / Timing Role: Protocol translator coordinating USB bulk transfers with ATA PIO/DMA cycles. Use Value: Delivers full ATA/ATAPI-6 compliance including ATAPI packet commands for optical drives and removable media. |
| USB-Based Diagnostic Tool | Legacy Industrial Storage Interface |
Use Scenario: Field service tool accessing proprietary ATA-based flash modules in medical equipment. IC Role / Device Role / Timing Role: Firmware-configurable bridge with custom command handling via embedded 8051 MCU. Use Value: Allows vendor-specific ATA command extensions through MCU firmware without changing hardware design. | Use Scenario: Retrofit solution connecting aging PLCs with ATA-based memory modules to modern USB-enabled HMIs. IC Role / Device Role / Timing Role: Level-shifting and protocol adapter between 5-V-tolerant ATA bus and 3.3-V USB PHY. Use Value: Maintains compatibility with legacy 5-V ATA signaling while operating from 3.3-V system rail. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB-to-ATA bridge applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GL852G | USB 2.0 hub + ATA bridge in single chip; no embedded MCU; relies on external firmware | Lacks programmable 8051 core; limited customization for non-standard ATA timing or command sets | Select when cost-sensitive, fixed-function bridge is sufficient and no firmware development is needed |
| FE1.1S | USB 2.0 hub controller only; no ATA interface; requires external bridge IC or FPGA logic | Cannot directly replace TUSB6250PFC; used only as upstream hub in multi-device configurations | Choose only as companion hub for expanding USB ports - not as functional alternative for ATA bridging |
Compared with GL852G and FE1.1S, the TUSB6250PFC uniquely integrates an 8051 MCU, full ATA/ATAPI-6 timing control, and die-ID serial number generation - making it suitable for applications requiring firmware customization, secure device identification, and strict ATA timing compliance without external components.
Availability
TUSB6250PFC is available at Aetrix Electronics and suitable for compact flash readers, external storage enclosures, and industrial diagnostic tools requiring stable component supply and long-term obsolescence management.
Supply support for TUSB6250PFC 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
Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.
The TUSB6250PFC belongs to TI's USB connectivity product line, designed specifically to simplify integration of legacy ATA/ATAPI storage into USB-hosted systems with minimal external components and firmware overhead.
FAQ
What is the primary function of the TUSB6250PFC?
The TUSB6250PFC is a USB 2.0 to ATA/ATAPI bridge controller that enables USB hosts to communicate with ATA/ATAPI storage devices such as CompactFlash cards and IDE hard drives. It integrates a USB 2.0 UTMI PHY, parallel interface engine, 8051-based MCU, and full ATA/ATAPI controller - all in a single 80-pin TQFP package. The TUSB6250PFC handles protocol translation, timing control, and data buffering without requiring external microcontrollers or transceivers.
Does the TUSB6250PFC require an external crystal oscillator?
Yes, the TUSB6250PFC requires a 12-MHz fundamental-mode crystal connected between XTAL_IN and XTAL_OUT pins to generate the precise clock needed for USB 2.0 high-speed operation and internal MCU timing. The crystal must meet stability and load capacitance specifications outlined in Section 13.1 of the TUSB6250PFC datasheet. No internal oscillator is provided - the device relies entirely on this external reference.
How does the TUSB6250PFC handle USB device enumeration and serial number assignment?
The TUSB6250PFC supports automatic USB device enumeration using a die-ID based serial number stored across six registers (SERNUM0–SERNUM5 at XDATA addresses F080–F085). This eliminates the need for external EEPROM to store a unique serial number. During enumeration, the TUSB6250PFC presents this factory-programmed identifier to the USB host, ensuring each unit has a distinct identity without firmware intervention or external components.
What ATA/ATAPI transfer modes does the TUSB6250PFC support?
The TUSB6250PFC supports ATA/ATAPI-6 compliant transfer modes including PIO modes 0–4 and Ultra DMA modes 0–5. Timing parameters for each mode are programmable via dedicated registers: PIOSPAS/PIOSPRC for PIO assertion/recovery times and DMASPAS/DMASPRC for DMA assertion/recovery times. These allow precise tuning to match specific storage device requirements, ensuring reliable operation across diverse ATA/ATAPI peripherals.
Can the embedded 8051 MCU in the TUSB6250PFC be reprogrammed with custom firmware?
No, the embedded 8051 MCU in the TUSB6250PFC executes mask-ROM firmware programmed at the factory and is not field-reprogrammable. However, the MCU's internal XDATA space (E000h–F0F9h) and SFR/ESFR registers are fully accessible for runtime configuration - allowing designers to customize USB descriptors, ATA timing, GPIO behavior, and interrupt handling through host-controlled register writes. The TUSB6250PFC firmware itself remains fixed, but its operational behavior is highly configurable.
TUSB6250PFC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 80-TQFP
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Applications:
- USB 2.0 to ATA/ATAPI Bridge
- Interface:
- ATA, ATAPI
- Voltage - Supply:
- 3V ~ 3.6V
- Supplier Device Package:
- 80-TQFP (12x12)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
TUSB6250PFC FAQ
1.How can I place an order for TUSB6250PFC through Aetrix?
Please submit a Request for Quotation (RFQ) for TUSB6250PFC 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 TUSB6250PFC reliable?
The price and inventory of TUSB6250PFC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUSB6250PFC is usually 5 days.
3.What payment methods are accepted for TUSB6250PFC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUSB6250PFC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUSB6250PFC?
TUSB6250PFC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUSB6250PFC 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 TUSB6250PFC?
For technical support, including TUSB6250PFC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUSB6250PFC requirements.
6.How does Aetrix verify that TUSB6250PFC is sourced from the original manufacturer or authorized distributors?
All TUSB6250PFC 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 TUSB6250PFC meets industry standards.
7.What is the process for return or replacement of TUSB6250PFC?
All TUSB6250PFC units undergo pre-shipment inspection (PSI). If there is an issue with TUSB6250PFC, 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 TUSB6250PFC part is unused and in its original packaging.
Return procedure for TUSB6250PFC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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