FM25V01-G

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The FM25V01-G is a nonvolatile memory product from ramtron international corporation. It is capable of storing 1 kBTC(1Kb) of battery-backed programmable nonvolatile memory. The FM25V01-G offers the capability to retain stored data and program at wide temperature ranges between -40°C and +85°C over a single voltage platform (1 to 1.8 V).

The main application field of the FM25V01-G is the industrial sectors which require the usage of field level data logging, program updates and remote configuration. Additionally, they are used in entertainment and gaming systems, battery-powered systems, computer peripherals, as well as automation. The device also finds its application in systems used in medical, automotive and telecommunications.

The FM25V01-G supports a wide range of digital logic supply voltage (1 to 1.8 V).This device requires a programmable input logic for writing the EEPROM data and to initiate the command.The device is programmed by supplying the input logic at the WP(Write Protect) and the CS(Chip Select) pins and then an 8-bit address of the memory locations should be loaded for every data write cycle.

The FM25V01-G is a serial non-volatile memory device which uses the SPI protocol for control and programming.It includes an on-chip address counter which can be used to automatically advance the address when transferring a stream of data bytes. The device is capable of both 8-bit and 16-bit data transfers and has a number of in-built functions, such as program and erase suspend, sleep or deep sleep mode, program and erase and data sequence chaining.

The device supports fast programming and a wide range of access times. It also supports a wide array of security features, such as write protection, multiple read/write lock secure, password protection and permanent write protection. Furthermore, the FM25V01-G is equipped with a built-in in-circuit serial programming (ICSP) feature, which can be used to program the device without the need for external programmer hardware.

The working principle of the FM25V01-G involves two parts: write and read. Writing is the process of programming the memory location with data from the control devices. This is done by carrying out the following operations: accessing the data from the device, setting the write control pins, addresses and data cycles, and carrying out the data write cycles. Read process involves two steps: setting the read control pins, addresses and data cycles, and carrying out the read cycles.The device must meet certain requirements prior to programming, namely it must have the correct logic supply voltage, the write signal must be asserted properly, the address write order must be correct and the device must be in command mode. It is important to remember that the device must be enabled to write. If these requirements are not met, the write operation will produce incorrect results.Once the device is properly written, the user can start the reading process. In order to read the memory content of the FM25V01-G, the user must first select one of the two different read command cycles. Then, the user must set the read control pins, address and data cycles. Finally, the user carries out the data read cycles. The system can read the data from the memory location specified by the address.In summary, the FM25V01-G is a nonvolatile memory device from ramtron international which is suitable for applications requiring field level data logging, program updates and remote configuration. The device is programmable via the SPI protocol and supports fast programming with multiple security settings and a built-in ICSP feature. The writing and reading processes involve setting the control pins, addresses and data cycles along with carrying out the associated write or read cycles.

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