W25Q128JVSIQ Detailed explanation of pin function specifications and circuit principle instructions

The W25Q128JVSIQ is a product of Winbond Electronics Corporation, which is known for its memory chips, particularly serial Flash memory devices. It is part of the W25Q Series of SPI NOR Flash memory devices.

The model W25Q128JVSIQ typically comes in a SOP-8 (Small Outline Package) or similar types, though it's essential to verify the exact packaging for your specific use case. In general, this type of memory is used for various embedded applications, where non-volatile storage is required.

Now, I'll provide a detailed breakdown of the pin function specifications for the W25Q128JVSIQ based on its most common packaging:

Pin Function Specification:

The W25Q128JVSIQ chip, when packaged in an SOP-8 or WSON-8, has 8 pins. Below is a detailed description of each of the pins and their functionality:

Pin Number Pin Name Function Description Pin 1 CS Chip Select: Active low input used to select the device for communication with the host. When CS is high, the device is not selected, and it ignores SPI commands. Pin 2 DO Data Output: SPI output for sending data from the flash memory to the host system. It transmits data during read operations. Pin 3 CLK Clock : The clock signal used to synchronize the data transfer between the host and the flash memory. The speed is typically up to 133 MHz. Pin 4 DI Data Input: SPI input for sending commands and data from the host to the flash memory. It receives data during write operations. Pin 5 W# Write Protect: Active low input used to protect the memory from writing operations. When low, the chip is in a write-protected state. Pin 6 VSS Ground: The reference ground pin for the chip. Pin 7 VCC Supply Voltage: The power supply input to the chip, typically 2.7V to 3.6V. Pin 8 WP Write Protect: A pin that, when asserted low, prevents write operations to the memory. It is an optional pin for additional protection.

20 Frequently Asked Questions (FAQ) about W25Q128JVSIQ:

Q1: What is the maximum clock frequency for W25Q128JVSIQ? A1: The maximum clock frequency for the W25Q128JVSIQ is typically up to 133 MHz when using the high-speed SPI mode.

Q2: What is the memory size of the W25Q128JVSIQ? A2: The W25Q128JVSIQ has a memory capacity of 128 Megabits (16MB).

Q3: How does the W25Q128JVSIQ store data? A3: The W25Q128JVSIQ stores data using NOR Flash memory technology, which is non-volatile and retains data even when the power is removed.

Q4: What is the voltage range required for W25Q128JVSIQ? A4: The W25Q128JVSIQ requires a supply voltage between 2.7V and 3.6V.

Q5: What is the purpose of the CS pin? A5: The CS pin is the Chip Select input that activates or deactivates the chip from SPI communication. It is active low, meaning the chip is selected when CS is low.

Q6: How is data written to the W25Q128JVSIQ? A6: Data is written to the W25Q128JVSIQ through the DI (Data Input) pin during SPI write operations. Write commands are sent via SPI, and data is latched on the rising clock edge.

Q7: What is the function of the W# pin? A7: The W# pin is used for Write Protection. When it is pulled low, it prevents any write operations to the memory.

Q8: Can the W25Q128JVSIQ be used for both read and write operations? A8: Yes, the W25Q128JVSIQ can be used for both read and write operations via SPI. Read operations are done through the DO (Data Output) pin, while write operations are done through the DI (Data Input) pin.

Q9: What happens when the WP pin is low? A9: When the WP pin is low, it places the memory in a write-protected state, preventing writes to the device.

Q10: What is the typical use case for the W25Q128JVSIQ? A10: The W25Q128JVSIQ is commonly used in embedded systems, automotive electronics, and applications requiring non-volatile memory for storing firmware, boot codes, and other critical data.

Q11: What are the common packaging options for W25Q128JVSIQ? A11: The W25Q128JVSIQ is commonly available in SOP-8 and WSON-8 packages, with 8 pins in total.

Q12: What is the write endurance of W25Q128JVSIQ? A12: The typical write endurance for the W25Q128JVSIQ is 100,000 write/erase cycles per sector.

Q13: How can I erase data from W25Q128JVSIQ? A13: Data in W25Q128JVSIQ can be erased using the SPI Erase Sector or Erase Chip command. This removes all data in the specified sector or the entire chip.

Q14: What is the reading speed of the W25Q128JVSIQ? A14: The read speed can be up to 133 MHz, depending on the mode used for communication (e.g., fast read mode or standard SPI).

Q15: Is the W25Q128JVSIQ compatible with standard SPI modes? A15: Yes, the W25Q128JVSIQ supports standard SPI communication modes, including Mode 0, Mode 1, Mode 2, and Mode 3.

Q16: How is the CLK pin used? A16: The CLK pin is used to synchronize data transfer between the host and the flash memory. It provides the clock signal during both read and write operations.

Q17: What happens if I connect the CS pin high? A17: If the CS pin is high, the W25Q128JVSIQ will be deselected and will not participate in any SPI communication. It will ignore any SPI commands.

Q18: Can I use W25Q128JVSIQ for storing boot code? A18: Yes, the W25Q128JVSIQ is commonly used to store boot code due to its high read speed and non-volatile memory characteristics.

Q19: What is the power consumption of W25Q128JVSIQ during idle? A19: The typical idle current consumption for the W25Q128JVSIQ is relatively low, typically around 1 µA when in deep power-down mode.

Q20: How can I troubleshoot if the W25Q128JVSIQ is not responding? A20: If the W25Q128JVSIQ is not responding, check the connections of the CS, CLK, DI, and DO pins. Ensure that the CS pin is correctly asserted low and verify that the voltage levels are within specifications.

This concludes the detailed specification and FAQ section for the W25Q128JVSIQ. If you need further clarification, feel free to ask!