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Adafruit 4899 SPI Flash SD Card - XTSD 512 MB
The Adafruit 4899 SPI Flash SD Card is a 512 MB non-volatile storage module designed for embedded systems, IoT devices, and microcontroller projects requiring reliable data persistence. Electronics engineers, firmware developers, and hobbyists use this component to add expandable storage capabilities to Arduino, Raspberry Pi, and custom embedded platforms. This module solves the critical challenge of limited onboard storage in resource-constrained devices by providing high-capacity, fast-access flash memory over the industry-standard SPI interface.
Product Overview
The Adafruit 4899 XTSD card operates on the Serial Peripheral Interface (SPI) protocol, enabling simple point-to-point communication with microcontroller boards using just four signal lines: Clock (CLK), Master Out Slave In (MOSI), Master In Slave Out (MISO), and Chip Select (CS). The 512 MB capacity provides substantial storage for logging sensor data, storing configuration files, buffering multimedia content, and maintaining application firmware. The module features robust error correction capabilities and supports standard SD card commands, making it compatible with existing SD card libraries and middleware across Arduino, CircuitPython, and embedded Linux environments.
This flash storage module delivers read speeds up to 25 MHz clock frequency and write performance optimized for sequential operations, making it ideal for data-intensive applications like environmental monitoring stations, GPS data loggers, and audio recording devices. The XTSD form factor ensures compact integration into space-constrained designs while maintaining full electrical compatibility with standard SPI flash protocols. Built with industrial-grade components, the Adafruit 4899 provides reliable long-term data retention with minimal power consumption, supporting both 3.3V and 5V logic levels through integrated level shifting.
Key Specifications
| Specification | Details |
| Product Type | SPI Flash Memory Card Module |
| Brand | Adafruit Industries |
| Model Number | 4899 |
| Storage Capacity | 512 MB |
| Interface Protocol | Serial Peripheral Interface (SPI) |
| Maximum Clock Speed | 25 MHz |
| Operating Voltage | 3.3V to 5V |
| Form Factor | XTSD Compact Module |
| Data Retention | 10+ years at room temperature |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
Key Features
- 512 MB Storage Capacity: Provides substantial non-volatile memory for logging applications, configuration storage, and firmware updates without requiring external cloud connectivity
- SPI Interface Compatibility: Operates on standard SPI protocol with CLK, MOSI, MISO, and CS lines, enabling seamless integration with Arduino, Raspberry Pi Pico, STM32, and ESP32 microcontrollers
- Dual Voltage Support: Integrated level shifting allows safe operation at both 3.3V and 5V logic levels, eliminating the need for external voltage converters
- Fast Read/Write Performance: Supports up to 25 MHz clock frequency for efficient data transfer, reducing overall system latency in time-critical applications
- Low Power Consumption: Minimal standby current draw extends battery life in portable and remote IoT applications
- Industrial Grade Reliability: Built with robust flash memory cells and error correction, ensuring data integrity across thousands of write cycles
Applications and Use Cases
- Environmental Data Logging: Store temperature, humidity, pressure, and air quality sensor readings from weather stations and indoor air quality monitors over extended periods without cloud dependency
- GPS and Location Tracking: Buffer GPS coordinates and timestamps for route mapping, vehicle tracking, and geographic analysis in autonomous systems and drone applications
- Audio and Multimedia Recording: Capture and store audio samples, voice notes, and sensor-triggered event recordings in portable devices and surveillance systems
- Firmware and Configuration Management: Maintain multiple firmware versions, calibration parameters, and user settings for over-the-air updates and system recovery in industrial IoT deployments
- Real-Time Data Acquisition: Log high-frequency sensor data from accelerometers, gyroscopes, and analog-to-digital converters for post-processing analysis in robotics and motion capture systems
- Offline Database Applications: Store structured data, lookup tables, and application state in embedded systems operating in remote or disconnected environments
How to Use
To integrate the Adafruit 4899 SPI Flash card into your project, connect the four SPI signal lines to your microcontroller: CLK to the clock pin, MOSI to the data output pin, MISO to the data input pin, and CS to any available GPIO pin configured as a digital output. Supply power from your microcontroller's 3.3V or 5V rail, and connect ground to establish a common reference. The module's integrated voltage regulation handles both logic levels automatically, eliminating compatibility concerns. Load the appropriate SD card library for your platform: use the SD.h library for Arduino boards, or the adafruit_sdcard library for CircuitPython environments on Raspberry Pi and other platforms.
Initialize the card in your setup function by calling SD.begin() with the chip select pin number, then use standard file operations to create, read, and write files as if accessing a traditional SD card. For optimal performance, keep SPI clock speeds at or below 25 MHz during initialization, then increase to full speed once the card is mounted. Implement proper error handling to detect write failures and verify successful data commits before assuming persistence. When logging sensor data continuously, consider buffering multiple readings in RAM before writing to flash in batches, which reduces power consumption and extends flash memory lifespan by minimizing write cycle frequency.
Frequently Asked Questions
Is the Adafruit 4899 compatible with Arduino Uno and Arduino Mega boards?
Yes, the Adafruit 4899 is fully compatible with Arduino Uno, Mega, and other AVR-based boards. Connect the SPI pins as follows: CLK to pin 13, MOSI to pin 11, MISO to pin 12, and select any GPIO pin for CS. The module's integrated voltage regulation supports both 3.3V and 5V logic, so no level shifter is required. Use the standard SD.h library available in the Arduino IDE to access files and manage storage.
Can I use this module with Raspberry Pi and ESP32?
Absolutely. The Adafruit 4899 works with Raspberry Pi, Raspberry Pi Pico, ESP32, and other SPI-capable microcontrollers. For Raspberry Pi, use the adafruit_sdcard CircuitPython library or native Linux file systems. For ESP32, utilize the SD.h library with appropriate pin definitions. Ensure your microcontroller's SPI bus is properly configured and the CS pin is set as a GPIO output for reliable communication.
What is the maximum number of write cycles this flash module supports?
The Adafruit 4899 supports approximately 100,000 to 1,000,000 write cycles per block, depending on the specific flash memory cells used. For typical data logging applications writing a few kilobytes daily, the module will provide 10+ years of reliable operation. To maximize lifespan, implement wear-leveling techniques by rotating write locations across different memory sectors, and avoid repeated writes to the same address within short time intervals.
Does the module require special initialization or formatting?
The Adafruit 4899 comes pre-formatted with FAT32 file system and is ready to use immediately. Simply connect the SPI pins, supply power, and call SD.begin() in your code. If you need to reformat the card, use your computer's SD card reader or implement SD card formatting functions within your microcontroller code using available libraries. Always back up important data before reformatting.
What is the data retention period if the module is not powered?
The flash memory in the Adafruit 4899 retains data for 10+ years at room temperature without power. This makes it ideal for long-term archival storage and applications where devices may be inactive for extended periods. However, in high-temperature environments or after repeated write cycles, retention periods may decrease slightly. For critical data, implement periodic verification or redundancy checks.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
Why Buy from The Engineer Store
- Genuine Products: Sourced directly from authorized distributors with authentication
- Expert Team: Our technical team validates every product before listing
- Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
- Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
- Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
- Technical Support: 24/7 expert guidance via email and WhatsApp
- Returns: 7-day return policy on manufacturing defects only
Buy Adafruit 4899 SPI Flash SD Card - XTSD 512 MB Online in India
Purchase the Adafruit 4899 SPI Flash SD Card - XTSD 512 MB online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on Adafruit 4899 SPI Flash SD Card - XTSD 512 MB with fast shipping and expert support.
Our team in Bengaluru is available 24/7 to support your journey from product selection to project completion.
Adafruit 4899 SPI Flash SD Card - XTSD 512 MB
The Adafruit 4899 SPI Flash SD Card is a 512 MB non-volatile storage module designed for embedded systems, IoT devices, and microcontroller projects requiring reliable data persistence. Electronics engineers, firmware developers, and hobbyists use this component to add expandable storage capabilities to Arduino, Raspberry Pi, and custom embedded platforms. This module solves the critical challenge of limited onboard storage in resource-constrained devices by providing high-capacity, fast-access flash memory over the industry-standard SPI interface.
Product Overview
The Adafruit 4899 XTSD card operates on the Serial Peripheral Interface (SPI) protocol, enabling simple point-to-point communication with microcontroller boards using just four signal lines: Clock (CLK), Master Out Slave In (MOSI), Master In Slave Out (MISO), and Chip Select (CS). The 512 MB capacity provides substantial storage for logging sensor data, storing configuration files, buffering multimedia content, and maintaining application firmware. The module features robust error correction capabilities and supports standard SD card commands, making it compatible with existing SD card libraries and middleware across Arduino, CircuitPython, and embedded Linux environments.
This flash storage module delivers read speeds up to 25 MHz clock frequency and write performance optimized for sequential operations, making it ideal for data-intensive applications like environmental monitoring stations, GPS data loggers, and audio recording devices. The XTSD form factor ensures compact integration into space-constrained designs while maintaining full electrical compatibility with standard SPI flash protocols. Built with industrial-grade components, the Adafruit 4899 provides reliable long-term data retention with minimal power consumption, supporting both 3.3V and 5V logic levels through integrated level shifting.
Key Specifications
| Specification | Details |
| Product Type | SPI Flash Memory Card Module |
| Brand | Adafruit Industries |
| Model Number | 4899 |
| Storage Capacity | 512 MB |
| Interface Protocol | Serial Peripheral Interface (SPI) |
| Maximum Clock Speed | 25 MHz |
| Operating Voltage | 3.3V to 5V |
| Form Factor | XTSD Compact Module |
| Data Retention | 10+ years at room temperature |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
Key Features
- 512 MB Storage Capacity: Provides substantial non-volatile memory for logging applications, configuration storage, and firmware updates without requiring external cloud connectivity
- SPI Interface Compatibility: Operates on standard SPI protocol with CLK, MOSI, MISO, and CS lines, enabling seamless integration with Arduino, Raspberry Pi Pico, STM32, and ESP32 microcontrollers
- Dual Voltage Support: Integrated level shifting allows safe operation at both 3.3V and 5V logic levels, eliminating the need for external voltage converters
- Fast Read/Write Performance: Supports up to 25 MHz clock frequency for efficient data transfer, reducing overall system latency in time-critical applications
- Low Power Consumption: Minimal standby current draw extends battery life in portable and remote IoT applications
- Industrial Grade Reliability: Built with robust flash memory cells and error correction, ensuring data integrity across thousands of write cycles
Applications and Use Cases
- Environmental Data Logging: Store temperature, humidity, pressure, and air quality sensor readings from weather stations and indoor air quality monitors over extended periods without cloud dependency
- GPS and Location Tracking: Buffer GPS coordinates and timestamps for route mapping, vehicle tracking, and geographic analysis in autonomous systems and drone applications
- Audio and Multimedia Recording: Capture and store audio samples, voice notes, and sensor-triggered event recordings in portable devices and surveillance systems
- Firmware and Configuration Management: Maintain multiple firmware versions, calibration parameters, and user settings for over-the-air updates and system recovery in industrial IoT deployments
- Real-Time Data Acquisition: Log high-frequency sensor data from accelerometers, gyroscopes, and analog-to-digital converters for post-processing analysis in robotics and motion capture systems
- Offline Database Applications: Store structured data, lookup tables, and application state in embedded systems operating in remote or disconnected environments
How to Use
To integrate the Adafruit 4899 SPI Flash card into your project, connect the four SPI signal lines to your microcontroller: CLK to the clock pin, MOSI to the data output pin, MISO to the data input pin, and CS to any available GPIO pin configured as a digital output. Supply power from your microcontroller's 3.3V or 5V rail, and connect ground to establish a common reference. The module's integrated voltage regulation handles both logic levels automatically, eliminating compatibility concerns. Load the appropriate SD card library for your platform: use the SD.h library for Arduino boards, or the adafruit_sdcard library for CircuitPython environments on Raspberry Pi and other platforms.
Initialize the card in your setup function by calling SD.begin() with the chip select pin number, then use standard file operations to create, read, and write files as if accessing a traditional SD card. For optimal performance, keep SPI clock speeds at or below 25 MHz during initialization, then increase to full speed once the card is mounted. Implement proper error handling to detect write failures and verify successful data commits before assuming persistence. When logging sensor data continuously, consider buffering multiple readings in RAM before writing to flash in batches, which reduces power consumption and extends flash memory lifespan by minimizing write cycle frequency.
Frequently Asked Questions
Is the Adafruit 4899 compatible with Arduino Uno and Arduino Mega boards?
Yes, the Adafruit 4899 is fully compatible with Arduino Uno, Mega, and other AVR-based boards. Connect the SPI pins as follows: CLK to pin 13, MOSI to pin 11, MISO to pin 12, and select any GPIO pin for CS. The module's integrated voltage regulation supports both 3.3V and 5V logic, so no level shifter is required. Use the standard SD.h library available in the Arduino IDE to access files and manage storage.
Can I use this module with Raspberry Pi and ESP32?
Absolutely. The Adafruit 4899 works with Raspberry Pi, Raspberry Pi Pico, ESP32, and other SPI-capable microcontrollers. For Raspberry Pi, use the adafruit_sdcard CircuitPython library or native Linux file systems. For ESP32, utilize the SD.h library with appropriate pin definitions. Ensure your microcontroller's SPI bus is properly configured and the CS pin is set as a GPIO output for reliable communication.
What is the maximum number of write cycles this flash module supports?
The Adafruit 4899 supports approximately 100,000 to 1,000,000 write cycles per block, depending on the specific flash memory cells used. For typical data logging applications writing a few kilobytes daily, the module will provide 10+ years of reliable operation. To maximize lifespan, implement wear-leveling techniques by rotating write locations across different memory sectors, and avoid repeated writes to the same address within short time intervals.
Does the module require special initialization or formatting?
The Adafruit 4899 comes pre-formatted with FAT32 file system and is ready to use immediately. Simply connect the SPI pins, supply power, and call SD.begin() in your code. If you need to reformat the card, use your computer's SD card reader or implement SD card formatting functions within your microcontroller code using available libraries. Always back up important data before reformatting.
What is the data retention period if the module is not powered?
The flash memory in the Adafruit 4899 retains data for 10+ years at room temperature without power. This makes it ideal for long-term archival storage and applications where devices may be inactive for extended periods. However, in high-temperature environments or after repeated write cycles, retention periods may decrease slightly. For critical data, implement periodic verification or redundancy checks.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
Why Buy from The Engineer Store
- Genuine Products: Sourced directly from authorized distributors with authentication
- Expert Team: Our technical team validates every product before listing
- Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
- Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
- Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
- Technical Support: 24/7 expert guidance via email and WhatsApp
- Returns: 7-day return policy on manufacturing defects only
Buy Adafruit 4899 SPI Flash SD Card - XTSD 512 MB Online in India
Purchase the Adafruit 4899 SPI Flash SD Card - XTSD 512 MB online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on Adafruit 4899 SPI Flash SD Card - XTSD 512 MB with fast shipping and expert support.
Our team in Bengaluru is available 24/7 to support your journey from product selection to project completion.