My Inquiry
My Account
Microchip Technology USB2228-NU-09
- Part No.:
- USB2228-NU-09
- Manufacturer:
- Microchip Technology
- Category:
- Specialized
- Package:
- 128-TQFP
- Datasheet:
-
USB2228-NU-09.pdf
- Description:
- IC INTFACE SPECIALIZED 128VTQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,566
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
USB2228-NU-09 from Microchip Technology is a USB 2.0 Bulk-Only Mass Storage Class peripheral controller IC integrating Flash Media Controllers for CompactFlash (True IDE), SmartMedia, xD, Memory Stick (PRO/DUO), Secure Digital, and MultiMediaCard. It features an embedded 8051 CPU core (30 MHz), 12 KB SRAM, on-chip 1.8 V regulator, internal PLL for 480 MHz USB sampling, and three integrated 3.3 V power FETs (100 mA ×2, 200 mA ×1) for direct card power delivery.
For engineers reviewing the USB2228-NU-09 datasheet, USB2228-NU-09 pinout, USB2228-NU-09 application, or USB2228-NU-09 equivalent, key selection considerations include simultaneous multi-format media support (with group-wise arbitration), hardware ECC correction, SD Security Command Extensions, USB bus-powered certification, and GPIO-configurable LUN assignment and card detection logic.
Technical Context
The USB2228-NU-09 implements a dual-bus architecture: a 32-bit 15 MHz data bus interconnects the 8051 CPU, SIE, and Flash Media Controllers (CF, SM, MS, SD/MMC), while dedicated DMA paths route data between media interfaces and dual-buffered 512-byte bulk endpoints. Its USB 2.0 PHY includes integrated transceiver and bias circuitry (RBIAS pin), supporting full-speed and high-speed enumeration with bi-directional control and bulk endpoints.
Media interface logic is partitioned into dedicated controllers-CF operates in True IDE mode only (MA[12:0], CF_nCS0/1, CF_D[15:0]), SM uses ALE/CLE strobes and nWE/nRE, MS employs BS/SDIO/D1–D3/SCLK, and SD/MMC relies on CMD/DAT[3:0]/CLK-with all controllers sharing common ECC, CRC, and power-FET control logic routed through GPIO8/10/11.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Interface | USB 2.0 Bulk-Only Mass Storage Class compliant; includes integrated PHY, SIE, and bi-directional control + bulk endpoints. |
| CPU Core | 8051-based microcontroller running at 30 MHz (4-cycle/instruction); executes firmware for media protocol translation and host negotiation. |
| Memory Resources | 12 KB internal scratchpad SRAM + 768 B program SRAM; supports 64 KB external code space via MD[7:0]/MA[15:0] bus. |
| Media Support | CompactFlash (True IDE only), SmartMedia/xD, Memory Stick PRO/DUO, Secure Digital, MMC, RS-MMC, NAND Flash. |
| Power Delivery | Three integrated 3.3 V power FETs: GPIO8/CRD_PWR0 and GPIO10/CRD_PWR1 = 100 mA each; GPIO11/CRD_PWR2 = 200 mA. |
| Crystal/Clk Input | On-chip 24 MHz crystal driver; supports external 24 MHz or 48 MHz clock via XTAL1/CLKIN with MA2/SEL_CLKDRV configuration. |
| GPIO Count | 15 programmable I/O pins with edge-sensitive interrupt capability, configurable for LED control, card detection, write-protect sensing, and power sequencing. |
Pinout & Package
USB2228-NU-09 is housed in a 128-pin VTQFP package (14 mm × 14 mm footprint, 1.0 mm height), RoHS compliant, with exposed thermal pad. Pin functions are grouped by interface: CF (MA[12:0], CF_D[15:0], CF_nCS0/1, CF_IRQ), SM (SM_D[7:0], SM_ALE/CLE/nWE/nRE), MS (MS_SDIO/D1–D3/BS/SCLK), SD (SD_DAT[3:0], SD_CMD/CLK), USB (USBDP/DM, RBIAS), and 15 GPIOs (GPIO1–15) with dual-role capability (e.g., GPIO8/CRD_PWR0).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CF_D[15:0] | CompactFlash data bus | Bi-directional 16-bit IDE data path; task file registers use D[7:0], bulk transfers use D[15:0]; internal weak pull-downs ensure idle-state stability. |
| GPIO8/CRD_PWR0 | Configurable I/O or card power output | Drives 3.3 V @ 100 mA to SM/xD/NAND cards; configured via firmware register; eliminates need for external FET and gate driver. |
| SD_DAT[3:0] | Secure Digital data lines | Bi-directional 4-bit SD/MMC data bus with internal weak pull-ups; supports SD Security Command Extensions and CRC generation/checking. |
| USBDM / USBDP | USB 2.0 differential data pair | Full-speed/high-speed signaling interface; requires 27 Ω series resistors and proper PCB routing per USB 2.0 specification. |
| nRESET | Active-low reset input | Asynchronous system reset; minimum pulse width 1 µs; latches MA2/MA[1:0] states to configure clock source and frequency at power-up. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware ECC correction | 1-bit error correction performed in dedicated logic block, reducing CPU overhead and improving NAND/SM read reliability without firmware intervention. |
| Integrated card power FETs | Three on-die 3.3 V power switches (100 mA ×2, 200 mA ×1) eliminate discrete MOSFETs, gate drivers, and associated passives-reducing BOM count and board area. |
| Multi-LUN media arbitration | Firmware enforces exclusive access per media group (CF/ATA, SM/xD/NAND, SD/MMC/MS), enabling single-chip multi-slot readers with automatic LUN mapping and hot-swap detection. |
| USB bus-powered certification | Meets USB 2.0 specification for bus-powered operation: draws ≤500 mA at 4.75–5.25 V; supports suspend/resume and remote wakeup via GPIO-triggered events. |
| GPIO-configurable card compliance | Attribute bits control xD cover switch behavior, SD write-protect polarity, CF legacy timing, SmartDetach auto-eject, and inquiry command response-enabling one firmware image across diverse OEM designs. |
Applications
| Digital Camera Card Reader | Industrial Data Logger |
|---|---|
Use Scenario: Embedded USB reader in DSLR accessories that accepts SD, CF, and MS cards for rapid photo transfer to host PC without requiring separate drivers. IC Role / Device Role / Timing Role: USB2228-NU-09 acts as a mass storage class peripheral, translating SD/CF/MS protocols into USB Bulk-Only commands while managing card power sequencing and hot-insertion detection. Use Value: Single-chip integration reduces bill-of-materials cost and PCB footprint; hardware ECC ensures robust NAND-based SmartMedia reads; GPIO-controlled activity LEDs provide real-time status feedback. | Use Scenario: Ruggedized field recorder using CF Ultra II and SDHC cards for long-term sensor data capture, with USB 2.0 interface for post-deployment data retrieval. IC Role / Device Role / Timing Role: USB2228-NU-09 serves as the bridge between industrial-grade flash media and host systems, handling True IDE CF timing, SD high-capacity addressing, and USB suspend/resume for battery-powered operation. Use Value: On-chip 1.8 V regulator and PLL enable low-power core operation; integrated power FETs simplify 3.3 V rail design; firmware-upgradable ROM supports future media standard updates over USB. |
| Medical Imaging Workstation | Automotive Infotainment Adapter |
Use Scenario: DICOM-compliant PACS workstation add-on module accepting multiple memory card formats used in ultrasound and endoscopy devices. IC Role / Device Role / Timing Role: USB2228-NU-09 provides certified mass storage class functionality with deterministic latency for medical image transfer, leveraging hardware CRC and SD security extensions for data integrity. Use Value: USB 2.0 high-speed throughput (480 Mbps) enables sub-second transfer of large DICOM files; multi-LUN support allows concurrent CF and SD card access during diagnostic review sessions. | Use Scenario: Aftermarket car stereo adapter enabling playback of music stored on SD, MS, or CF cards via USB connection to head unit. IC Role / Device Role / Timing Role: USB2228-NU-09 operates as a transparent USB mass storage device, presenting each inserted card as a separate LUN while managing voltage-level translation and card insertion/removal events. Use Value: GPIO-driven SmartDetach feature automatically disconnects USB when no card is present-reducing standby current; 3.3 V I/O with 5 V tolerance on VBUS/GPIO3 simplifies automotive 5 V supply interfacing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB-to-flash-media controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| USB2241-AI-09 | Successor generation with enhanced SDXC support, 64 KB internal ROM, and improved power efficiency; lacks xD Picture Card support. | Targets newer SDHC/SDXC deployments where xD compatibility is unnecessary; requires updated firmware and layout due to different pinout. | Select USB2241-AI-09 for new designs prioritizing SDXC and lower active power; retain USB2228-NU-09 for legacy xD/SmartMedia backward compatibility. |
| GL827L-16 | Single-chip USB 2.0 SD/MMC/MS/CF controller from Genesys Logic; supports SD3.0 UHS-I but no hardware ECC or integrated power FETs. | Requires external power management and error-correction logic; optimized for cost-sensitive consumer readers rather than industrial multi-format use cases. | Choose GL827L-16 for high-volume SD/MS-only applications with tight BOM constraints; USB2228-NU-09 remains preferred when hardware ECC, integrated FETs, and xD/SM support are mandatory. |
Compared with USB2228-NU-09, USB2241-AI-09 offers higher SD performance and lower power but drops xD support, while GL827L-16 reduces component count for SD-centric designs but shifts ECC and power delivery to external circuitry-making USB2228-NU-09 uniquely balanced for legacy multi-format reliability and integration density.
Availability
USB2228-NU-09 is available at Aetrix Electronics and suitable for digital camera accessories, industrial data loggers, medical imaging workstations, and automotive infotainment adapters requiring stable component supply and long-term lifecycle support.
Supply support for USB2228-NU-09 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 Inc. is a leading provider of microcontroller, analog, FPGA, and connectivity solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The USB2228-NU-09 belongs to Microchip's fourth-generation USB 2.0 Flash Media Controller family, designed specifically to consolidate multiple flash card interfaces-including legacy formats like SmartMedia and xD-into a single, bus-powered, firmware-upgradable IC for embedded peripheral applications.
FAQ
What flash memory card standards does the USB2228-NU-09 support?
The USB2228-NU-09 supports CompactFlash (True IDE mode only), SmartMedia, xD Picture Card, Memory Stick (including PRO, DUO, and High Speed variants), Secure Digital (SD), Mini-SD, TransFlash (microSD), MultiMediaCard (MMC), Reduced Size MMC (RS-MMC), NAND Flash, and CF Ultra I/II form-factor ATA hard drives. It implements dedicated hardware controllers for each interface and enforces group-wise arbitration to prevent simultaneous access within conflicting media families.
Does the USB2228-NU-09 require external memory to operate?
No-the USB2228-NU-09 contains internal ROM firmware capable of booting and operating standalone. However, it also supports external program memory up to 64 KB via its MD[7:0]/MA[15:0] bus. The ROMEN bit (latched from GPIO6 at reset) determines whether execution occurs from internal ROM or external memory; this allows field-upgradeable firmware deployment while maintaining factory-default operation.
How does the USB2228-NU-09 handle power delivery to different flash cards?
The USB2228-NU-09 integrates three independent 3.3 V power FETs: GPIO8/CRD_PWR0 and GPIO10/CRD_PWR1 each deliver 100 mA, while GPIO11/CRD_PWR2 delivers 200 mA. These are software-configurable to power specific media types-e.g., GPIO11 drives CF/ATA, GPIO10 powers SD/MMC, and GPIO8 supplies SM/xD/NAND-eliminating external regulators and reducing board complexity.
Is the USB2228-NU-09 compatible with standard USB mass storage class drivers?
Yes-the USB2228-NU-09 is fully compliant with the USB 2.0 Bulk-Only Mass Storage Class specification and works out-of-the-box with Microsoft Windows (XP, 2000 SP3, ME, 98/98SE), Apple macOS (OS X 10.x, OS 9, OS 8.6), Linux, and Softconnex drivers. No custom driver installation is required for basic read/write functionality across supported operating systems.
What is the role of the 8051 core inside the USB2228-NU-09?
The embedded 8051 microprocessor in the USB2228-NU-09 executes firmware that manages USB enumeration, media protocol translation (e.g., SD commands ↔ USB CBW/CWS), card detection, power sequencing, LUN assignment, and GPIO configuration. Running at 30 MHz with 12 KB SRAM, it handles real-time control tasks while offloading data movement to dedicated DMA and hardware accelerators like ECC and CRC engines.
USB2228-NU-09 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 128-TQFP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Applications:
- Controller
- Interface:
- -
- Voltage - Supply:
- 3.3V
- Supplier Device Package:
- 128-VTQFP (14x14)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
USB2228-NU-09 FAQ
1.How can I place an order for USB2228-NU-09 through Aetrix?
Please submit a Request for Quotation (RFQ) for USB2228-NU-09 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 USB2228-NU-09 reliable?
The price and inventory of USB2228-NU-09 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for USB2228-NU-09 is usually 5 days.
3.What payment methods are accepted for USB2228-NU-09?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for USB2228-NU-09 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for USB2228-NU-09?
USB2228-NU-09 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your USB2228-NU-09 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 USB2228-NU-09?
For technical support, including USB2228-NU-09 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your USB2228-NU-09 requirements.
6.How does Aetrix verify that USB2228-NU-09 is sourced from the original manufacturer or authorized distributors?
All USB2228-NU-09 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 USB2228-NU-09 meets industry standards.
7.What is the process for return or replacement of USB2228-NU-09?
All USB2228-NU-09 units undergo pre-shipment inspection (PSI). If there is an issue with USB2228-NU-09, 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 USB2228-NU-09 part is unused and in its original packaging.
Return procedure for USB2228-NU-09:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
USB2228-NU-09 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
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
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…
