IS25LQ016B-JKLE

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IS25LQ016B-JKLE, belonging to the Memory category, is a small area and low-cost serial flash memory. It is the sector-erase Flash memory chip of 16 Mbit (2M x 8bit), fabricated with single power supply of 3.0V to 3.6V, and operated at a maximum clock frequency of 104MHz. Its small area and low cost as well as its low power consumption makes it especially suitable for mobile applications. IS25LQ016B-JKLE\'s application field and working principle can be divided into two parts.

1.Application Field of IS25LQ016B-JKLE

IS25LQ016B-JKLE mainly focuses on the non-volatile memory storage field such as industrial, consumer and automotive industry. In industrial field, this memory chip can be used in industrial IoT applications, embedded systems and medical monitoring equipments. In consumer industry, it can be used in USBs, digital cameras, mobile phones and headphones. In automotive industry, it can be used in navigation systems, engine control systems and car display systems.

2. Working Principle of IS25LQ016B-JKLE

The working principle of IS25LQ016B-JKLE could be separated into three parts: address plus data bus interface synchronization, flash memory control and data read/write.

First is the address plus data bus interface synchronization. This chip is attached to any 8-bit/16-bit microprocessor by connecting its address (A0~A15) and data (D0~D7) lines with the microprocessor where the serial spi interface (SCK, CS# and SI/SO) of IS25LQ016B-JKLE can be used for transmitting and receiving data. Its internal address logic is chosen according to the A0~A15 pins status.

Second is the flash memory control. It consists of one register that has been built-in in the chip and there are chip-specific command (OP code) sent to the controller to direct the control of memory contents. By sending the data to the register, the external device is in control with the content of inside flash memory and other instructions such as erasing and program functions can be executed.

Lastly is the data read/write. After the flash memory is being controlled, the data can be written and read from it by following protocol and procedure. For write, the serial data has to be sent to the chip via the SI port. For read, the SI port data has to be sent to the chip and the requested data will be sent back via the SO port. This chip features with 8bit/16bit write/ read that are categorized into dual-mode. Both write and read data transmission speed can reach 2MHz to 104MHz.

In summary, IS25LQ016B-JKLE is suitable for applications in industrial, consumer and automotive industry due to its small area and low cost. It doesn’t require complex process and is usable with any 8-bit/16-bit microprocessor. Furthermore, the address plus data bus interface synchronize, flash memory control and data read/write are the three main working principles that are mastered by this chip.

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