The part number "MX25L12835FMI-10G" refers to a specific memory chip manufactured by Macronix, a well-known semiconductor company. This chip is a 128Mb (megabit) NOR Flash memory device.
Pin Function Specifications and Circuit Principle
The MX25L12835FMI-10G is part of the MX25L series, which uses a dual/quad SPI (Serial Peripheral interface ) and is widely used in embedded systems for storage applications. The device typically comes in an 8-pin or 16-pin package, but based on your request for a detailed explanation, I'll assume you're referring to a common packaging that provides comprehensive pin function details.
Since this chip is commonly available in various packages, such as SOIC-16 or WSON-8, its pinout may differ based on the package chosen. Let’s assume you're referring to the WSON-8 package (since this is quite common for this type of memory chip).
Pin Function Table
Here’s a detailed breakdown of the pins, assuming a WSON-8 (8 pins) configuration:
Pin Number Pin Name Pin Function Description 1 VCC Power supply pin (typically 3.3V). Powers the chip. 2 GND Ground pin. Connect to the system ground. 3 /CS Chip Select. Active low signal used to select the chip for communication. 4 /WP Write Protect. Active low. When low, write operations are disabled. 5 /RESET Reset pin. Active low. Resets the memory device. 6 SCK Serial Clock . Provides the clock signal for SPI communication. 7 SI Serial Input. This is the data input pin for SPI communication. 8 SO Serial Output. This is the data output pin for SPI communication.Pin Function Details
VCC (Pin 1): Supplies power to the chip. Typically, it operates at 3.3V, though 2.7V is possible depending on the device configuration. GND (Pin 2): This is the ground connection. It provides a reference for the logic levels of all signals. /CS (Pin 3): This is the chip-select pin. It must be pulled low to activate the chip, allowing communication between the chip and the controller. If this pin is high, the chip is not selected and does not communicate with the system. /WP (Pin 4): This pin is used to enable or disable write protection. When the pin is pulled low, write operations to the memory chip are disabled. /RESET (Pin 5): This pin is used to reset the device. When this pin is pulled low, the chip will reset and return to its default state. SCK (Pin 6): This pin carries the clock signal for the serial interface. It is used to synchronize the transmission of data over the SPI bus. SI (Pin 7): Serial input. Data is sent to the chip through this pin during SPI communication. SO (Pin 8): Serial output. The chip outputs data to the SPI master (controller) through this pin.FAQ - Frequently Asked Questions (20 Questions)
Below are 20 common questions about the MX25L12835FMI-10G device with detailed answers:
Q: What is the voltage range for the VCC pin of the MX25L12835FMI-10G? A: The VCC pin should be powered with a voltage in the range of 2.7V to 3.6V. Q: What type of memory is used in the MX25L12835FMI-10G? A: The MX25L12835FMI-10G uses NOR Flash memory, which is a type of non-volatile memory. Q: How is the chip selected for communication? A: The chip is selected using the /CS (Chip Select) pin. It must be pulled low to enable communication. Q: Can the MX25L12835FMI-10G operate at a voltage of 5V? A: No, the device is designed to operate at 3.3V, and applying 5V may damage the device. Q: What happens if the /WP pin is pulled low? A: When the /WP pin is low, write protection is enabled, and no write operations can occur. Q: What is the function of the /RESET pin? A: The /RESET pin is used to reset the device. When held low, it initializes the chip to its default state. Q: What is the maximum clock frequency for the SPI interface? A: The maximum clock frequency is typically up to 104 MHz, depending on the specific configuration. Q: How is data written to the MX25L12835FMI-10G? A: Data is written to the device via the SPI interface, using the SI (Serial Input) pin for sending data. Q: How is data read from the MX25L12835FMI-10G? A: Data is read from the device via the SPI interface, using the SO (Serial Output) pin for receiving data.Q: Can the MX25L12835FMI-10G support Quad SPI?
A: Yes, the device supports Quad SPI for higher-speed data transfer.Q: What happens if the /CS pin is left high?
A: If the /CS pin is high, the device will not respond to SPI commands, effectively disabling communication.Q: What is the typical operating temperature range of the MX25L12835FMI-10G?
A: The typical operating temperature range is between -40°C to +85°C.Q: Can I use the MX25L12835FMI-10G for booting an embedded system?
A: Yes, the chip can be used for booting an embedded system due to its non-volatile nature and fast read speeds.Q: What is the maximum data retention for the MX25L12835FMI-10G?
A: The typical data retention is up to 20 years at 25°C.Q: How many write/erase cycles does the MX25L12835FMI-10G support?
A: The device supports at least 100,000 write/erase cycles per sector.Q: How do I enable read/write operations on the device?
A: Read/write operations are controlled by the /WP pin. When it is pulled high, read/write operations are enabled.Q: Can the MX25L12835FMI-10G be used in automotive applications?
A: Yes, the device is suitable for automotive applications, especially in environments with wide temperature ranges.Q: What is the endurance of the MX25L12835FMI-10G?
A: The endurance is up to 100,000 program/erase cycles, depending on the operating conditions.Q: How should the /RESET pin be used in an application?
A: The /RESET pin should be used for hardware resets. It should be pulled low momentarily to reset the chip.Q: What is the typical current consumption during operation?
A: The typical current consumption during read or write operations is around 10mA, with a maximum of 20mA depending on the frequency and voltage applied.Conclusion
This detailed explanation of the MX25L12835FMI-10G covers the essential pinout, function specifications, and the FAQ section. The provided pinout and usage instructions should help with understanding how to interface this device in your embedded system.