My Inquiry
My Account
Texas Instruments TUSB6250PFCG4
- Part No.:
- TUSB6250PFCG4
- Manufacturer:
- Texas Instruments
- Category:
- Specialized
- Package:
- 80-TQFP
- Datasheet:
-
TUSB6250PFCG4.pdf
- Description:
- IC INTERFACE SPECIALIZED 80TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,179
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TUSB6250PFCG4 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-6/ATAPI-6 command sets, and PIO Mode 4 / Multiword DMA Mode 2 transfers. It enables direct connection of IDE/CF storage devices to USB hosts in embedded peripheral designs.
For engineers reviewing the TUSB6250PFCG4 datasheet, TUSB6250PFCG4 pinout, TUSB6250PFCG4 application, or TUSB6250PFCG4 equivalent, this page provides verified functional architecture, validated 80-pin TQFP package mapping, confirmed USB 2.0 + ATA/ATAPI dual-interface timing behavior, and real-world CompactFlash reader implementation details - all derived from TI SLLS535E (April 2008) official documentation.
Technical Context
The TUSB6250PFCG4 implements a tightly coupled dual-bus architecture: its USB 2.0 UTMI PHY handles physical-layer signaling, while the Parallel Interface Engine (PIE) manages packet translation between USB transactions and ATA/ATAPI command sequences. The embedded 8051 MCU executes firmware for enumeration, descriptor handling, and transfer arbitration.
Its ATA/ATAPI controller includes a sector FIFO, state machine-driven power-on sequencing, and configurable PIO/DMA timing registers (e.g., PIOSPAS, DMASPRC). It supports both master and slave ATA device roles and features die-ID–based USB serial number generation for unique device identification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Interface | USB 2.0 High-Speed (480 Mbps) compliant with UTMI+ Level 2 specification |
| ATA/ATAPI Support | ATA-6 and ATAPI-6 command set; PIO Mode 4 (20 MB/s), Multiword DMA Mode 2 (16.6 MB/s) |
| MCU Core | Enhanced 8051 microcontroller with 16 KB on-chip ROM, 256 B RAM, and XDATA space up to F0F9h |
| Operating Voltage | 3.3 V ±5% digital core supply; 5-V tolerant I/O buffers for ATA/ATAPI interface |
| Package | 80-pin TQFP (12 mm × 12 mm, 0.5 mm pitch), RoHS-compliant, lead-free |
| USB Enumeration | Fully autonomous; supports standard device descriptors, configuration descriptors, and string descriptors |
| Serial Number | Die-ID–based unique 6-byte USB device serial number stored in SERNUM0–SERNUM5 registers |
Pinout & Package
Package: 80-pin Thin Quad Flat Package (TQFP), body size 12 mm × 12 mm, lead pitch 0.5 mm, exposed thermal pad (non-electrical), RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Digital core supply | 3.3 V ±5% input for internal logic and USB PHY; requires local 0.1 µF decoupling |
| VSS | Digital ground | Common reference for all digital I/O and core logic; separate from analog ground |
| XTALIN / XTALOUT | Clock oscillator terminals | Supports 12 MHz crystal for USB 2.0 clock generation; internal PLL multiplies to 480 MHz |
| USB_DP / USB_DM | USB 2.0 differential data pair | UTMI-compliant high-speed (480 Mbps) bidirectional signals; require 90 Ω differential impedance routing |
| DIOR# / DIOW# | ATA/ATAPI I/O read/write strobes | Active-low control signals synchronized to ATA timing; 5-V tolerant, drive standard IDE bus loads |
| RESET# | Asynchronous active-low reset | Resets internal state machines, USB controller, and ATA interface; minimum pulse width 10 µs |
| INT# | Interrupt request output | Open-drain, active-low signal indicating USB or ATA event (e.g., endpoint completion, ATA interrupt) |
Key Features
| Feature | Design Value |
|---|---|
| Integrated USB 2.0 UTMI PHY | Eliminates need for external transceiver; supports high-speed negotiation and chirp detection |
| Autonomous ATA/ATAPI power-on sequencing | Ensures correct voltage ramp and reset timing for IDE/CF devices without host intervention |
| Configurable PIO/DMA timing registers | PIOSPAS, PIOSPRC, DMASPAS, DMASPRC allow fine-tuning for diverse ATA device timing margins |
| Die-ID–based USB serial number | Provides unique, factory-programmed 6-byte serial number for device identification and licensing |
| I²C interface controller | Enables communication with external EEPROM or sensors; supports random/sequential read and page write |
| GPIO port configuration | Port 2 and Port 3 support programmable pull-up/pull-down resistors via PUPDSLCT_P2/P3 registers |
Applications
| CompactFlash Card Reader | USB-to-IDE Bridge Adapter |
|---|---|
Use Scenario: Embedded industrial data logger reads/writes CF cards via USB host PC for field-deployed firmware updates and log retrieval. IC Role / Device Role / Timing Role: TUSB6250PFCG4 acts as protocol translator and timing arbitrator between USB 2.0 host and CF card's ATA interface, managing PIO Mode 4 transfers and power sequencing. Use Value: Enables direct CF access without host-side drivers; die-ID serial number ensures unique device identity per unit for traceability. |
Use Scenario: Legacy IDE hard drive connected to modern USB-only systems using passive adapter board. IC Role / Device Role / Timing Role: TUSB6250PFCG4 serves as full-function bridge controller, handling USB enumeration, ATA command translation, and sector FIFO buffering. Use Value: Supports PIO Mode 4 (20 MB/s) and Multiword DMA Mode 2 (16.6 MB/s), enabling usable throughput for mechanical HDDs. |
| USB Mass Storage Peripheral | Embedded Storage Controller |
Use Scenario: Medical imaging device exports DICOM files from internal IDE SSD to USB host for archiving. IC Role / Device Role / Timing Role: TUSB6250PFCG4 operates as USB device class-compliant mass storage device, presenting SCSI commands over BOT protocol. Use Value: Leverages built-in USB buffer manager and endpoint descriptor blocks to handle bulk-in/bulk-out transfers without MCU overhead. |
Use Scenario: Ruggedized transportation terminal uses CF card for logging GPS and sensor data; requires reliable, low-power storage interface. IC Role / Device Role / Timing Role: TUSB6250PFCG4 functions as standalone storage controller with autonomous power-on reset and ATA device initialization. Use Value: Unique die-ID serial number enables secure firmware binding and field unit authentication. |
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-16 | Single-chip USB 2.0 to IDE bridge; no embedded MCU; relies on fixed firmware; supports PIO Mode 4 only | Lacks programmable serial number and I²C interface; simpler integration but less flexible for custom descriptors | Select when cost-sensitive, fixed-function CF reader design requires minimal firmware customization. |
| CH376T | USB device/host controller with SD/TF card support; no native ATA/ATAPI interface; requires external IDE translation logic | Designed for flash media, not parallel ATA; cannot directly drive IDE/CF without additional glue logic | Select only for SD/TF-based storage; not a functional substitute for TUSB6250PFCG4's native ATA/ATAPI capability. |
Compared with GL852G-16 and CH376T, the TUSB6250PFCG4 offers integrated 8051 MCU programmability, die-ID–based USB serial number, and full ATA/ATAPI timing configurability - making it uniquely suited for applications requiring field-upgradable firmware, secure device identity, and interoperability with legacy IDE peripherals.
Availability
TUSB6250PFCG4 is available at Aetrix Electronics and suitable for CompactFlash readers, USB-to-IDE adapters, and embedded mass storage peripherals requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for TUSB6250PFCG4 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions across industrial, automotive, and communications markets.
The TUSB6250PFCG4 belongs to TI's USB bridge controller product line, designed specifically to enable seamless integration of legacy parallel ATA/ATAPI storage devices into modern USB 2.0 host ecosystems.
FAQ
What is the primary function of the TUSB6250PFCG4?
The TUSB6250PFCG4 is a dedicated USB 2.0 to ATA/ATAPI bridge controller IC. Its primary function is to translate USB mass storage class (MSC) commands from a USB host into native ATA/ATAPI commands for IDE or CompactFlash storage devices. It integrates all necessary logic - including USB PHY, parallel interface engine, 8051 MCU, and ATA controller - enabling direct, driverless connectivity without external microcontrollers or firmware development.
Does the TUSB6250PFCG4 support USB 2.0 high-speed operation?
Yes, the TUSB6250PFCG4 fully supports USB 2.0 high-speed operation at 480 Mbps. It implements a UTMI-compliant PHY and handles high-speed chirp negotiation, packet splitting, and transaction scheduling autonomously. The device enumerates as a high-speed USB device and maintains compliance with USB 2.0 specification requirements for timing, error recovery, and suspend/resume behavior - all verified in TI SLLS535E.
What ATA/ATAPI transfer modes does the TUSB6250PFCG4 support?
The TUSB6250PFCG4 supports ATA-6 and ATAPI-6 command sets with PIO Mode 4 (20 MB/s) and Multiword DMA Mode 2 (16.6 MB/s). Timing parameters for both modes are programmable via dedicated registers (PIOSPAS, PIOSPRC, DMASPAS, DMASPRC), allowing adaptation to diverse IDE device timing tolerances. It does not support Ultra DMA modes beyond Mode 2.
How is the USB device serial number generated in the TUSB6250PFCG4?
The TUSB6250PFCG4 generates a unique USB device serial number using its factory-programmed die ID. This 6-byte value is stored in registers SERNUM0 through SERNUM5 (XDATA addresses F080–F085) and automatically presented during USB enumeration. Unlike software-assigned strings, this hardware-derived serial number ensures uniqueness across units without firmware intervention - a key feature confirmed in Section 5.3.2 of SLLS535E.
Is external firmware required to operate the TUSB6250PFCG4?
No, the TUSB6250PFCG4 operates autonomously with factory-programmed ROM firmware. It requires no external code loading or runtime firmware updates for basic USB MSC functionality. The embedded 8051 MCU executes pre-verified routines for enumeration, descriptor handling, and ATA command translation. Optional firmware customization is possible via the XDATA space, but default operation is fully self-contained - as documented in Sections 2.2 and 6.1 of SLLS535E.
TUSB6250PFCG4 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
TUSB6250PFCG4 FAQ
1.How can I place an order for TUSB6250PFCG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TUSB6250PFCG4 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 TUSB6250PFCG4 reliable?
The price and inventory of TUSB6250PFCG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUSB6250PFCG4 is usually 5 days.
3.What payment methods are accepted for TUSB6250PFCG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUSB6250PFCG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUSB6250PFCG4?
TUSB6250PFCG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUSB6250PFCG4 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 TUSB6250PFCG4?
For technical support, including TUSB6250PFCG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUSB6250PFCG4 requirements.
6.How does Aetrix verify that TUSB6250PFCG4 is sourced from the original manufacturer or authorized distributors?
All TUSB6250PFCG4 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 TUSB6250PFCG4 meets industry standards.
7.What is the process for return or replacement of TUSB6250PFCG4?
All TUSB6250PFCG4 units undergo pre-shipment inspection (PSI). If there is an issue with TUSB6250PFCG4, 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 TUSB6250PFCG4 part is unused and in its original packaging.
Return procedure for TUSB6250PFCG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TUSB6250PFCG4 Tags
-
NVT4857UKAZ
NXP Semiconductors
-
TCA8418RTWR
Texas Instruments
-
PCA9546APWR
Texas Instruments
-
MD0100N8-G
Microchip Technology
-
PCA9548APW,118
NXP Semiconductors
-
PCA9540BDP,118
NXP Semiconductors
-
PCA9548APWR
Texas Instruments
-
PCA9546APW,118
NXP Semiconductors
-
PTN3360DBS,518
NXP Semiconductors
-
PCA9546ABS,118
NXP Semiconductors
-
PCA9518PWR
Texas Instruments
-
PCA9545APW,118
NXP Semiconductors
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
