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Microchip Technology USB2244I-AEZG-06-TR
- Part No.:
- USB2244I-AEZG-06-TR
- Manufacturer:
- Microchip Technology
- Category:
- Specialized
- Package:
- 36-VFQFN Exposed Pad
- Datasheet:
-
USB2244I-AEZG-06-TR.pdf
- Description:
- IC INTERFACE SPECIALIZED 36QFN
- Quantity:
- Payment:
- Shipping:
Inventory:18,266
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Product details
Overview
USB2244I-AEZG-06-TR from Microchip Technology is an industrial-grade USB 2.0 Hi-Speed bulk-only flash media controller IC designed for SD/MMC card reader applications. It integrates an 8051 core (60 MHz, 64 KB ROM/14 KB RAM), on-chip 1.8 V regulator, internal 200 mA card power FET, and native SD/MMC interface with support for SD 2.0 (HS-SD, SDHC), MMC 4.2 (1/4/8-bit), and TransFlash. It delivers sustained transfer rates exceeding 35 MB/s in optimized host/media configurations.
For engineers reviewing the USB2244I-AEZG-06-TR datasheet, USB2244I-AEZG-06-TR pinout, USB2244I-AEZG-06-TR application, or USB2244I-AEZG-06-TR equivalent, key selection considerations include industrial temperature operation (−40°C to +85°C), SD/MMC-specific 12-pin native interface, integrated card power control, crystal/clock input flexibility (24 MHz), and firmware-configurable vendor/product IDs via external EEPROM.
Technical Context
The USB2244I-AEZG-06-TR implements a dedicated SD/MMC flash media controller architecture-distinct from multiplexed xD/MS variants-with fixed 12-pin SD interface (SD_D[7:0], SD_CMD, SD_CLK, SD_WP, SD_nCD). Its 8051 microprocessor executes firmware at 60 MHz with single-cycle instruction timing and manages USB mass storage class protocol handling, media command translation, and LED activity signaling.
Hardware features include on-die 1.8 V core regulation from a single 3.3 V supply, internal 200 mA CRD_PWR FET with fold-back short-circuit protection, and configurable clock source (24 MHz crystal across XTAL1/XTAL2 or external 24 MHz clock on XTAL1). The device supports MMC Streaming Mode and SD Secure licensed functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Compliance | USB 2.0 Hi-Speed (480 Mbps), bulk-only transfer mode |
| Operating Temperature | Industrial range: −40°C to +85°C (denoted by "I" suffix) |
| Media Support | SD 2.0 (HS-SD, SDHC), MMC 4.2 (1/4/8-bit), TransFlash |
| Core Processor | 8051-based MCU: 60 MHz, single-cycle execution, 64 KB ROM / 14 KB RAM |
| Power Management | Single 3.3 V supply; internal regulators generate 1.8 V core (VDD18) and 1.8 V PLL (VDD18PLL) |
| Card Power Drive | Integrated FET delivering up to 200 mA at 3.3 V with fold-back short-circuit protection |
| Package | 36-pin QFN (6 × 6 mm), RoHS-compliant, exposed thermal pad (ePad) |
Pinout & Package
USB2244I-AEZG-06-TR uses a 36-pin QFN (6 × 6 mm) package with exposed ground pad (ePad) requiring 3×3 thermal vias to VSS. Pin functions are optimized for SD/MMC-only operation-no xD or Memory Stick signal multiplexing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SD_D[0–7] | Bi-directional data bus | 8-bit SD/MMC data path with weak internal pull-up resistors; supports 1/4/8-bit MMC modes |
| SD_CMD | Command line | Bi-directional command interface to SD/MMC device; internal pull-up enabled |
| SD_CLK | Clock output | Software-configurable clock output driving SD/MMC device; max frequency per SD spec |
| SD_WP | Write protect detection | Active-high input sensing physical SD card write-protect switch state |
| SD_nCD | Card detect | Active-low input indicating SD card insertion; default firmware assignment |
| CRD_PWR | Card power driver | Output capable of sourcing 200 mA at 3.3 V; enables/disables SD card power under firmware control |
| RESET_N | Active-low reset | Asynchronous system reset input; requires ≥1 µs low pulse for reliable initialization |
| USB+/USB− | Differential USB 2.0 data | Full-speed/Hi-Speed transceiver I/O; all required series termination and bias resistors integrated |
Key Features
| Feature | Design Value |
|---|---|
| Dedicated SD/MMC interface | Fixed 12-pin native SD bus eliminates signal routing ambiguity and reduces layout complexity vs. multiplexed variants |
| Integrated card power FET | 200 mA 3.3 V drive with fold-back current limiting removes need for external MOSFET and associated gate-drive circuitry |
| Single-supply operation | 3.3 V only input powers full system-including 1.8 V core and PLL rails-reducing BOM count and PCB area |
| Firmware configurability | External I²C EEPROM (512×8) enables customization of VID/PID, serial number, manufacturer/product strings, and LED blink behavior |
| Crystal/clock flexibility | Supports either 24 MHz crystal (XTAL1/XTAL2) or external 24 MHz clock (XTAL1 only), easing board-level timing design |
Applications
| SD Card Reader Module | Embedded Industrial PC Peripheral |
|---|---|
Use Scenario: Standalone USB-connected SD card reader for field data logging in ruggedized enclosures. IC Role / Device Role / Timing Role: USB2244I-AEZG-06-TR acts as the sole bridge between SD card and USB host, managing command translation, data streaming, and power sequencing. Use Value: Industrial temperature rating ensures reliable operation in uncontrolled environments; integrated CRD_PWR eliminates discrete FET and reduces failure points. |
Use Scenario: Integrated SD slot in programmable logic controller (PLC) HMI panel for firmware updates and configuration backup. IC Role / Device Role / Timing Role: USB2244I-AEZG-06-TR provides mass storage class enumeration to Windows/Linux hosts while handling SD access timing per SD 2.0 spec. Use Value: Native SD interface and 35+ MB/s throughput enable fast firmware load times; EEPROM-based VID/PID customization supports OEM branding. |
| Multi-Function Printer (MFP) Media Slot | USB-Enabled Digital Signage Player |
Use Scenario: SD card slot in office MFP for direct print-from-card or scan-to-SD workflows. IC Role / Device Role / Timing Role: USB2244I-AEZG-06-TR serves as the embedded SD controller interfacing with printer SoC over USB, handling LUN management and error recovery. Use Value: Supports SDHC and HS-SD modes for high-resolution image transfers; LED pin drives status indicator synchronized to card activity. |
Use Scenario: Digital signage player with removable SD card for content updates in retail kiosks or transportation displays. IC Role / Device Role / Timing Role: USB2244I-AEZG-06-TR presents as standard USB mass storage device to host OS, enabling drag-and-drop content loading without drivers. Use Value: Industrial temp range ensures stable operation inside thermally constrained enclosures; MMC Streaming Mode improves video playback continuity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB flash media controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| USB2244-AEZG-06-TR | Commercial temperature grade (0°C to +70°C); identical pinout, firmware, and SD/MMC feature set | Suitable for consumer desktop peripherals and non-rugged embedded systems | Select when industrial temperature range is not required and cost optimization is prioritized |
| USB2241I-AEZG-06-TR | Supports SD/MMC + Memory Stick (MS/MS Pro/MS Duo); 14-pin SD/MS interface; no xD support | Required for dual-format readers supporting both SD and MS cards | Choose only if Memory Stick compatibility is mandatory; adds pin count complexity and firmware overhead |
Compared with USB2244I-AEZG-06-TR, the commercial-grade USB2244-AEZG-06-TR offers identical SD/MMC performance at lower cost but lacks extended temperature resilience, while USB2241I-AEZG-06-TR expands format support at the expense of dedicated SD signal integrity and simplified layout.
Availability
USB2244I-AEZG-06-TR is available at Aetrix Electronics and suitable for industrial PC peripherals, digital signage players, and multi-function printers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for USB2244I-AEZG-06-TR 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.
USB2244I-AEZG-06-TR belongs to the USB224x family of ultra-fast USB 2.0 flash media controllers, engineered specifically for cost-sensitive, high-reliability SD/MMC reader applications in industrial and commercial equipment.
FAQ
What is the operating temperature range of the USB2244I-AEZG-06-TR?
The USB2244I-AEZG-06-TR is rated for industrial temperature operation from −40°C to +85°C. This is explicitly indicated by the "I" suffix in the part number and confirmed in the device's datasheet section 1.1. The specification applies to the full functional operation of the USB2244I-AEZG-06-TR, including USB enumeration, SD/MMC command execution, and CRD_PWR FET control across the entire range.
Does the USB2244I-AEZG-06-TR support xD-Picture Card or Memory Stick formats?
No, the USB2244I-AEZG-06-TR does not support xD-Picture Card or Memory Stick. Per the datasheet Figures 4-3 and Table 5-3, its pinout and internal block diagram are dedicated exclusively to SD/MMC. xD and MS interfaces are present only on USB2240/40I and USB2241/41I variants. The USB2244I-AEZG-06-TR is functionally optimized for SD 2.0 and MMC 4.2 compliance only.
How is card power managed on the USB2244I-AEZG-06-TR?
The USB2244I-AEZG-06-TR integrates a 200 mA 3.3 V card power FET controlled via the CRD_PWR pin. Firmware can assert this output to enable SD/MMC power, with built-in fold-back short-circuit protection. No external FET or gate-driver components are required. This capability is documented in the Hardware Features section and Figure 3-2 block diagram for the USB2244/44I variant.
Can the USB2244I-AEZG-06-TR operate without an external crystal?
Yes, the USB2244I-AEZG-06-TR supports both crystal and external clock configurations. A 24 MHz crystal may be connected across XTAL1 and XTAL2, or a 24 MHz CMOS clock signal may be driven into XTAL1 while leaving XTAL2 open. This flexibility is specified in Section 1.1 and Figure 3-2, and applies identically to the USB2244I-AEZG-06-TR.
What firmware customization options are available for the USB2244I-AEZG-06-TR?
The USB2244I-AEZG-06-TR supports full firmware customization via an external I²C EEPROM (512×8), enabling OEM-defined USB Vendor ID (VID), Product ID (PID), serial number, manufacturer/product strings, LED blink interval/duration, and SD power settings. These parameters are mapped in Table 7-1 of the datasheet and persist across USB re-enumeration.
USB2244I-AEZG-06-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 36-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Controller
- Interface:
- -
- Voltage - Supply:
- 3.3V
- Supplier Device Package:
- 36-QFN (6x6)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
USB2244I-AEZG-06-TR FAQ
1.How can I place an order for USB2244I-AEZG-06-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for USB2244I-AEZG-06-TR 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 USB2244I-AEZG-06-TR reliable?
The price and inventory of USB2244I-AEZG-06-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for USB2244I-AEZG-06-TR is usually 5 days.
3.What payment methods are accepted for USB2244I-AEZG-06-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for USB2244I-AEZG-06-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for USB2244I-AEZG-06-TR?
USB2244I-AEZG-06-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your USB2244I-AEZG-06-TR 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 USB2244I-AEZG-06-TR?
For technical support, including USB2244I-AEZG-06-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your USB2244I-AEZG-06-TR requirements.
6.How does Aetrix verify that USB2244I-AEZG-06-TR is sourced from the original manufacturer or authorized distributors?
All USB2244I-AEZG-06-TR 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 USB2244I-AEZG-06-TR meets industry standards.
7.What is the process for return or replacement of USB2244I-AEZG-06-TR?
All USB2244I-AEZG-06-TR units undergo pre-shipment inspection (PSI). If there is an issue with USB2244I-AEZG-06-TR, 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 USB2244I-AEZG-06-TR part is unused and in its original packaging.
Return procedure for USB2244I-AEZG-06-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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