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Home > Products > Integrated Circuits (ICs) > Interface > Specialized

Microchip Technology USB2241I-AEZG-06

Name: USB2241I-AEZG-06
Brand: Microchip Technology
SKU: USB2241I-AEZG-06
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: USB2241I-AEZG-06

Manufacturer:: Microchip Technology

Category:: Specialized

Package:: 36-VFQFN Exposed Pad

Datasheet:: USB2241I-AEZG-06.pdf

Description:: IC INTERFACE SPECIALIZED 36QFN

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Product details

Overview

USB2241I-AEZG-06 from Microchip Technology is a USB 2.0 Hi-Speed bulk-only flash media controller IC designed for SD and Memory Stick card reader applications. It integrates an 8051 microprocessor (60 MHz, 64 KB ROM/14 KB RAM), supports industrial temperature range (−40°C to +85°C), delivers up to 35 MB/s sustained transfer rates, and features on-chip 3.3 V to 1.8 V regulation for core power. It targets embedded card readers in printers and consumer A/V devices.

For engineers reviewing the USB2241I-AEZG-06 datasheet, USB2241I-AEZG-06 pinout, USB2241I-AEZG-06 application, or USB2241I-AEZG-06 equivalent, key selection criteria include SD/MMC and Memory Stick interface compatibility, 36-pin QFN package footprint, integrated card power FET (200 mA), crystal oscillator support (24 MHz), and firmware-configurable media detection and LED control.

Technical Context

The USB2241I-AEZG-06 implements a hardware-controlled data flow architecture optimized for self-mapped media like SD and Memory Stick, with pipelined hardware acceleration for non-self-mapped access. Its integrated 8051 core executes instructions at single-cycle speed and manages USB mass storage class protocol handling, including CBW/Auto-CBW processing and LUN enumeration.

It supports dual-interface operation via multiplexed SD/MS pins (e.g., SD_D0/MS_D4, SD_CMD/MS_D0), configurable socket polarity and MS slot size detection (via TXD/SCK/MS_SKT_SEL sampling at RESET_N), and optional external EEPROM configuration over I²C for vendor ID, product string, and serial number customization.

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), MultiMediaCard 4.2 (1/4/8-bit), Memory Stick 1.43/Pro 1.02/Duo 1.10/Pro-HG Duo 1.01
Processor Core	8051-based MCU: 60 MHz single-cycle execution, 64 KB ROM, 14 KB RAM
Power Architecture	Single 3.3 V supply; internal 1.8 V core regulator (VDD18) and PLL-regulated analog rail (VDD18PLL)
Card Power Delivery	Integrated FET delivering 200 mA at 3.3 V to SD/MS cards with fold-back short-circuit protection
Clock Source	On-chip 24 MHz crystal driver (XTAL1/XTAL2) or optional external 24 MHz clock input
Operating Temp	Industrial grade: −40°C to +85°C (denoted by "I" suffix)

Pinout & Package

USB2241I-AEZG-06 is housed in a RoHS-compliant 36-pin QFN package (6 × 6 mm, 0.5 mm pitch) with exposed thermal pad (ePad) requiring 3×3 ground vias. Pin functions are defined per USB2241/2241I configuration - no xD-Picture Card signals are implemented.

Pin/Terminal	Circuit Role	Design Meaning
SD_D0 / MS_D4	Bi-directional data line	Shared SD/MMC and Memory Stick data bus pin with weak internal pull-up (I/O12PU)
SD_CMD / MS_D0	Command/data line	SD command channel or MS data line 0; bi-directional with internal pull-up (I/O12PU)
SD_CLK / MS_BS	Clock/bus state output	Drives SD clock or MS bus state (BS) signal; software-configurable frequency (O12)
MS_INS	Memory Stick insertion detect	Active-high card presence input with internal pull-up (IPU); left unconnected if MS socket unused
CRD_PWR	Card power switch	200 mA 3.3 V output enabling/disabling power to SD/MS card (I/O200)
RESET_N	Active-low reset input	Asynchronous system reset; requires ≥1 μs low pulse (IS)
LED	Activity indicator driver	Open-drain output controlling external LED; blink interval/duration programmable via EEPROM (I/O12)

Key Features

Feature	Design Value
Integrated USB PHY & SIE	Full USB 2.0 transceiver with on-die termination, bias (RBIAS), and Serial Interface Engine eliminates external USB components
Multiplexed SD/MS Interface	14 shared pins support both SD/MMC and Memory Stick protocols without external logic or mux ICs
Firmware-Configurable Media Detection	MS socket size (4-bit vs 8-bit) auto-detected via MS_SKT_SEL sampling at reset; SD_nCD and MS_INS independently monitored
On-Chip Power Regulation	Dual internal regulators provide stable 1.8 V core (VDD18) and filtered 1.8 V PLL rail (VDD18PLL), reducing external BOM count
EEPROM-Based Customization	External 2-wire EEPROM enables field-updatable vendor ID, product string, serial number, and LED behavior without firmware reflash

Applications

Desktop & Mobile PC Card Readers	Printer Integrated Media Slots
Use Scenario: External or built-in USB card reader supporting SD and Memory Stick in desktop workstations or laptops. IC Role / Device Role / Timing Role: USB mass storage class peripheral controller managing host-initiated read/write commands and media-specific timing sequences. Use Value: Enables plug-and-play compatibility with Windows, macOS, and Linux without custom drivers; leverages native OS mass storage stack.	Use Scenario: Multi-format memory card slot embedded in office or photo printers for direct image import. IC Role / Device Role / Timing Role: Real-time media interface translator converting USB MSC requests into SD/MMC or Memory Stick command cycles. Use Value: Supports high-throughput photo transfers (up to 35 MB/s) while maintaining deterministic response for print job queuing.
Consumer A/V Media Players	Industrial Embedded Media Gateways
Use Scenario: Portable media players or digital photo frames with removable SD/MS cards for content expansion. IC Role / Device Role / Timing Role: Low-latency flash media bridge providing seamless file access under USB host control. Use Value: Reduces firmware complexity via hardware-accelerated data flow and built-in interrupt handling optimization.	Use Scenario: Ruggedized kiosks or medical imaging devices requiring reliable media access across extended temperature ranges. IC Role / Device Role / Timing Role: Industrial-grade media controller ensuring stable operation from −40°C to +85°C with fault-tolerant card power management. Use Value: Integrated 200 mA card FET with fold-back protection prevents latch-up during hot-plug events in unattended systems.

Desktop & Mobile PC Card Readers

Printer Integrated Media Slots

Use Scenario: External or built-in USB card reader supporting SD and Memory Stick in desktop workstations or laptops.

IC Role / Device Role / Timing Role: USB mass storage class peripheral controller managing host-initiated read/write commands and media-specific timing sequences.

Use Value: Enables plug-and-play compatibility with Windows, macOS, and Linux without custom drivers; leverages native OS mass storage stack.

Use Scenario: Multi-format memory card slot embedded in office or photo printers for direct image import.

IC Role / Device Role / Timing Role: Real-time media interface translator converting USB MSC requests into SD/MMC or Memory Stick command cycles.

Use Value: Supports high-throughput photo transfers (up to 35 MB/s) while maintaining deterministic response for print job queuing.

Consumer A/V Media Players

Industrial Embedded Media Gateways

Use Scenario: Portable media players or digital photo frames with removable SD/MS cards for content expansion.

IC Role / Device Role / Timing Role: Low-latency flash media bridge providing seamless file access under USB host control.

Use Value: Reduces firmware complexity via hardware-accelerated data flow and built-in interrupt handling optimization.

Use Scenario: Ruggedized kiosks or medical imaging devices requiring reliable media access across extended temperature ranges.

IC Role / Device Role / Timing Role: Industrial-grade media controller ensuring stable operation from −40°C to +85°C with fault-tolerant card power management.

Use Value: Integrated 200 mA card FET with fold-back protection prevents latch-up during hot-plug events in unattended systems.

Equivalent & Alternatives

The following parts are listed as comparable options for similar flash media controller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
USB2244I-AEZG-06	Dedicated SD/MMC-only interface (12 dedicated SD pins); no Memory Stick support; higher SD-specific throughput optimization	Suitable only for SD/SDHC/SDXC and MMC applications; excludes Memory Stick sockets	Select when targeting SD-centric designs with no MS requirement and needing simplified pin routing
GL827L-16	USB 2.0 SD/MMC controller with integrated USB PHY; supports SD 3.0 UHS-I (104 MB/s); no Memory Stick; different EEPROM layout and register map	Higher-speed SD-focused readers; lacks MS compatibility and industrial temp rating	Choose for cost-sensitive, high-volume SD-only readers where UHS-I performance is required

Compared with USB2241I-AEZG-06, USB2244I-AEZG-06 removes Memory Stick functionality to reduce pin count complexity, while GL827L-16 trades industrial temperature support and MS compatibility for higher SD bandwidth and lower unit cost in commercial environments.

Availability

USB2241I-AEZG-06 is available at Aetrix Electronics and suitable for desktop PC peripherals, printer media interfaces, and consumer A/V devices requiring stable component supply, industrial temperature resilience, and multi-format flash media support.

Supply support for USB2241I-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 leading provider of microcontroller, mixed-signal, analog, and Flash-IP solutions, headquartered in Chandler, Arizona.

The USB224x product line was engineered specifically for ultra-fast, single-chip USB flash media card readers supporting SD, MMC, and Memory Stick formats in space-constrained, cost-sensitive embedded systems.

FAQ

What media formats does the USB2241I-AEZG-06 support?

The USB2241I-AEZG-06 supports Secure Digital 2.0 (HS-SD, SDHC), MultiMediaCard 4.2 (1/4/8-bit), and Memory Stick families including MS 1.43, Pro 1.02, Duo 1.10, and Pro-HG Duo 1.01. It does not support xD-Picture Card - that capability is exclusive to USB2240/40I variants. All supported formats operate under USB mass storage class compliance.

Does USB2241I-AEZG-06 require an external crystal or can it use a clock input?

USB2241I-AEZG-06 supports both configurations: a 24 MHz crystal connected between XTAL1 and XTAL2, or a single-ended 24 MHz clock applied to XTAL1 with XTAL2 left open. The internal crystal driver circuit eliminates need for external buffer components, and RBIAS resistor (12.0 kΩ ±1.0%) must be connected from VSS to RBIAS pin for proper USB transceiver biasing.

How is Memory Stick socket size determined on USB2241I-AEZG-06?

USB2241I-AEZG-06 samples the TXD/SCK/MS_SKT_SEL pin on the positive edge of RESET_N to determine Memory Stick socket width: logic high selects 8-bit mode, logic low selects 4-bit mode. This configuration is latched at power-on reset and remains fixed until next reset; no runtime reconfiguration is supported without hardware reset.

What is the maximum sustained data transfer rate achievable with USB2241I-AEZG-06?

USB2241I-AEZG-06 achieves average sustained transfer rates exceeding 35 MB/s when paired with high-performance SDHC or Memory Stick Pro-HG media and a capable USB 2.0 host. This figure reflects real-world sequential read/write throughput under optimal conditions - actual performance depends on media speed class, host controller efficiency, and firmware overhead.

Can USB2241I-AEZG-06 drive an LED directly, and how is its behavior configured?

Yes, USB2241I-AEZG-06 drives an external LED directly via the LED pin (I/O12), supporting blink patterns for media activity indication. Blink interval and duration are configured through EEPROM registers LED_BLK_INT (0xA8h) and LED_BLK_DUR (0xA9h); default values yield visible activity feedback synchronized to data transfers without requiring GPIO polling or firmware intervention.

USB2241I-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

USB2241I-AEZG-06 FAQ

1.How can I place an order for USB2241I-AEZG-06 through Aetrix?

Please submit a Request for Quotation (RFQ) for USB2241I-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 USB2241I-AEZG-06 reliable?

The price and inventory of USB2241I-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 USB2241I-AEZG-06 is usually 5 days.

3.What payment methods are accepted for USB2241I-AEZG-06?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for USB2241I-AEZG-06 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for USB2241I-AEZG-06?

USB2241I-AEZG-06 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your USB2241I-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 USB2241I-AEZG-06?

For technical support, including USB2241I-AEZG-06 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your USB2241I-AEZG-06 requirements.

6.How does Aetrix verify that USB2241I-AEZG-06 is sourced from the original manufacturer or authorized distributors?

All USB2241I-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 USB2241I-AEZG-06 meets industry standards.

7.What is the process for return or replacement of USB2241I-AEZG-06?

All USB2241I-AEZG-06 units undergo pre-shipment inspection (PSI). If there is an issue with USB2241I-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 USB2241I-AEZG-06 part is unused and in its original packaging.

Return procedure for USB2241I-AEZG-06:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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