My Inquiry
My Account
Microchip Technology USB2244I-AEZG-06
- Part No.:
- USB2244I-AEZG-06
- Manufacturer:
- Microchip Technology
- Category:
- Specialized
- Package:
- 36-VFQFN Exposed Pad
- Datasheet:
-
USB2244I-AEZG-06.pdf
- Description:
- IC INTERFACE SPECIALIZED 36QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,019
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
USB2244I-AEZG-06 from Microchip Technology is a USB 2.0 Hi-Speed bulk-only flash media controller IC dedicated to SD/MMC card reading and writing, featuring integrated 8051 core (60 MHz), 64 KB ROM/14 KB RAM, 36-pin QFN (6×6 mm), and industrial temperature support (−40°C to +85°C). It delivers sustained transfer rates exceeding 35 MB/s with SDHC/HS-SD media in desktop PC card readers and embedded printers.
For engineers reviewing the USB2244I-AEZG-06 datasheet, USB2244I-AEZG-06 pinout, USB2244I-AEZG-06 application, or USB2244I-AEZG-06 equivalent, this page provides verified technical context, validated SD-specific pin functions, real-world timing and power specifications, and confirmed alternative controllers for multi-format reader designs requiring SD/MMC focus and industrial-grade operation.
Technical Context
The USB2244I-AEZG-06 implements a hardware-controlled data flow architecture optimized exclusively for SD/MMC media-unlike USB2240/41 variants supporting xD or Memory Stick. Its dedicated SD interface includes 8-bit bidirectional data lines (SD_D0–SD_D7), software-configurable SD_CLK output, and pull-up–enabled SD_CMD/SD_WP/SD_nCD signals.
It integrates an on-chip 8051 microprocessor running at 60 MHz with single-cycle execution, internal 1.8 V core regulation from a single 3.3 V supply, and a 200 mA internal card power FET with fold-back short-circuit protection-enabling direct SD card power delivery without external regulators or discrete FETs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Compliance | USB 2.0 Hi-Speed (480 Mbps), bulk-only class, integrated D+/D− termination and pull-up/down resistors |
| Media Support | Secure Digital 2.0: HS-SD, SDHC, TransFlash™; MultiMediaCard 4.2: 1/4/8-bit MMC |
| Core Processor | 8051-based MCU: 60 MHz clock, single-cycle execution, 64 KB ROM, 14 KB RAM |
| Power Architecture | Single 3.3 V input; internal 1.8 V core regulator (VDD18) and 1.8 V PLL rail (VDD18PLL) |
| Card Power Delivery | Integrated FET: 200 mA SD card supply with fold-back short-circuit protection |
| Crystal/Clock | On-board 24 MHz crystal driver; optional external 24 MHz clock via XTAL1 (CLKIN) |
| Operating Temperature | Industrial grade: −40°C to +85°C (confirmed by "I" suffix and DS00001979A-page 3) |
Pinout & Package
USB2244I-AEZG-06 uses a RoHS-compliant 36-pin QFN package (6 mm × 6 mm, 0.5 mm pitch) with exposed thermal pad (ePad) requiring 3×3 ground vias. Pin functions are dedicated to SD/MMC interface-no xD or Memory Stick signal multiplexing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SD_D0–SD_D7 | SD/MMC bidirectional data bus | 8-bit parallel interface with weak internal pull-up (I/O12PU); supports 1/4/8-bit MMC modes |
| SD_CLK | SD/MMC clock output | Software-configurable clock generator (O12); drives SD card clock input |
| SD_CMD | SD/MMC command line | Bi-directional command channel (I/O12PU); connects to CMD pin of SD/MMC device |
| SD_WP | SD write protect detection | Input sensing mechanical WP switch state (active-high logic per SD spec) |
| SD_nCD | SD card detect | Active-low input (I/O12); asserted when SD card is inserted into socket |
| CRD_PWR | Card power control | I/O200 output enabling 200 mA 3.3 V supply to SD card; fold-back protected |
| USB+, USB− | USB 2.0 differential data pair | Full-speed/Hi-Speed transceiver I/O-U pins with integrated series termination |
| RESET_N | Active-low reset input | Asynchronous system reset (IS); requires ≥1 μs low pulse for reliable initialization |
Key Features
| Feature | Design Value |
|---|---|
| Dedicated SD/MMC Interface | 12-pin fixed-function SD bus (no multiplexing), eliminating firmware overhead for format switching |
| Integrated Card Power FET | 200 mA regulated 3.3 V output with fold-back current limiting-removes need for external DC-DC or LDO |
| On-Chip Clock Generation | 24 MHz crystal oscillator circuit with XTAL1/XTAL2 pins; eliminates external clock source BOM cost |
| Industrial Temperature Range | −40°C to +85°C operation validated per USB2244I designation (DS00001979A-page 3) |
| USB Enumeration Readiness | Pre-programmed VID/PID (0424h/2240h) and default strings ("Ultra Fast Media Reader") enable plug-and-play on Windows/macOS/Linux |
Applications
| Desktop PC Card Reader | Industrial Printer Media Slot |
|---|---|
Use Scenario: Integrated SD/MMC slot in all-in-one desktop PCs for photo import and firmware updates. IC Role / Device Role / Timing Role: USB 2.0 peripheral controller handling mass storage class protocol, SD command/data sequencing, and host-to-card timing alignment. Use Value: Enables >35 MB/s sustained transfers using SDHC cards-reducing photo import time by >40% vs. legacy USB 1.1 readers. |
Use Scenario: Embedded SD card interface in production-grade label printers for font/template storage and job spooling. IC Role / Device Role / Timing Role: Industrial-grade SD host controller managing hot-plug detection (SD_nCD), write-protect sensing (SD_WP), and robust power delivery (CRD_PWR). Use Value: −40°C to +85°C operation ensures reliable card access in factory-floor thermal environments without derating. |
| POS Terminal Peripheral | Medical Imaging Viewer |
Use Scenario: Compact USB-connected SD reader module in retail point-of-sale terminals for receipt log backup. IC Role / Device Role / Timing Role: Low-pin-count (36-pin QFN) USB peripheral IC providing HID-class enumeration and secure SD access with minimal PCB area. Use Value: Single 3.3 V supply and integrated regulators reduce bill-of-materials by 3 components versus discrete power solutions. |
Use Scenario: DICOM image archive reader in portable medical imaging viewers using SD cards for patient study storage. IC Role / Device Role / Timing Role: High-integrity SD host controller enforcing SD Secure (licensed feature) for encrypted DICOM file reads. Use Value: Hardware-accelerated SD Secure compliance enables HIPAA-aligned data access without host CPU overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SD/MMC host controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| USB2244-AEZG-06 | Commercial temperature range (0°C to +70°C); identical pinout, firmware, and SD interface | Suitable only for office/desktop environments without thermal extremes | Select when industrial temperature rating is unnecessary and cost optimization is prioritized. |
| GL827L-QLF | USB 2.0 SD/MMC controller with integrated USB PHY; no internal 8051 core-relies on host-side firmware | Lacks local processing; requires host driver stack support for SD protocol layer | Choose for host-processor-rich systems where offloading SD logic to host improves flexibility. |
Compared with USB2244I-AEZG-06, the commercial USB2244-AEZG-06 saves cost but sacrifices thermal ruggedness, while GL827L-QLF reduces component count at the expense of host-side firmware complexity and real-time SD timing control.
Availability
USB2244I-AEZG-06 is available at Aetrix Electronics and suitable for industrial printers, medical imaging viewers, POS terminals, and desktop PC peripherals requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for USB2244I-AEZG-06 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 U.S.-based semiconductor company specializing in microcontrollers, analog devices, and connectivity solutions, with global manufacturing and quality certifications including ISO 9001 and IATF 16949.
USB2244I-AEZG-06 belongs to Microchip's USB224x family of flash media controllers, designed specifically for cost-sensitive, high-volume USB-connected SD/MMC card readers targeting industrial, computing, and consumer electronics markets.
FAQ
What is the operating temperature range of USB2244I-AEZG-06?
The USB2244I-AEZG-06 is rated for industrial operation from −40°C to +85°C. This specification is explicitly defined in the datasheet (DS00001979A-page 3) and confirmed by the "I" suffix in the part number, distinguishing it from commercial-grade variants like USB2244-AEZG-06.
Does USB2244I-AEZG-06 support SD Secure Digital (SD Secure)?
Yes, USB2244I-AEZG-06 supports SD Secure Digital functionality, as stated in the "Highlights" section (DS00001979A-page 1): "USB2244/44I: SD Secure". This licensed feature enables hardware-accelerated encryption/decryption for compliant SD cards, and is implemented in the USB2244I-AEZG-06 silicon.
What is the maximum sustained data transfer rate achievable with USB2244I-AEZG-06?
The USB2244I-AEZG-06 achieves average sustained transfer rates exceeding 35 MB/s when paired with high-performance SDHC or HS-SD cards and a capable USB 2.0 host controller. This figure is specified in the "Highlights" section (DS00001979A-page 1) and reflects real-world sequential read/write performance under optimal conditions.
Can USB2244I-AEZG-06 drive an SD card directly without external power circuitry?
Yes, USB2244I-AEZG-06 integrates a 200 mA internal card power FET (CRD_PWR pin) with fold-back short-circuit protection. As confirmed in the "Hardware Features" section (DS00001979A-page 1), it delivers regulated 3.3 V power directly to the SD card-eliminating the need for external FETs, regulators, or current-limiting resistors.
Is USB2244I-AEZG-06 pin-compatible with other USB224x family members?
No, USB2244I-AEZG-06 is not pin-compatible with USB2240/41 variants. Its pinout is dedicated solely to SD/MMC (12 dedicated SD pins), whereas USB2240/41 use multiplexed xD/MS/SD pins. Figure 4-3 and Table 5-3 (DS00001979A-pages 9 & 12) confirm the exclusive SD interface layout of USB2244/44I.
USB2244I-AEZG-06 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 36-VFQFN Exposed Pad
- Packaging:
- Tray
- 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 FAQ
1.How can I place an order for USB2244I-AEZG-06 through Aetrix?
Please submit a Request for Quotation (RFQ) for USB2244I-AEZG-06 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 reliable?
The price and inventory of USB2244I-AEZG-06 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 is usually 5 days.
3.What payment methods are accepted for USB2244I-AEZG-06?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for USB2244I-AEZG-06 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for USB2244I-AEZG-06?
USB2244I-AEZG-06 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your USB2244I-AEZG-06 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?
For technical support, including USB2244I-AEZG-06 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your USB2244I-AEZG-06 requirements.
6.How does Aetrix verify that USB2244I-AEZG-06 is sourced from the original manufacturer or authorized distributors?
All USB2244I-AEZG-06 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 meets industry standards.
7.What is the process for return or replacement of USB2244I-AEZG-06?
All USB2244I-AEZG-06 units undergo pre-shipment inspection (PSI). If there is an issue with USB2244I-AEZG-06, 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 part is unused and in its original packaging.
Return procedure for USB2244I-AEZG-06:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
USB2244I-AEZG-06 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…
