Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Memory Type:	Volatile
Memory Format:	SRAM
Technology:	SRAM - Dual Port, Asynchronous
Memory Size:	64Kb (4K x 16)
Write Cycle Time - Word, Page:	65ns
Access Time:	65ns
Memory Interface:	Parallel
Voltage - Supply:	1.7 V ~ 1.9 V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	100-TFBGA
Supplier Device Package:	100-CABGA (6x6)

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Memory

Introduction

Memory is a critical aspect of computer science and data processing, and it is important to understand aspects like 70P249L65BYGI8 application field and working principle to understand its importance. Memory is the process by which data is stored and retrieved from computers, and it involves the use of both hardware and software. Memory used in computers is usually divided into two broad categories: RAM (Random Access Memory) and ROM (Read-Only Memory).

RAM

Random Access Memory is a type of temporary, volatile memory where information is stored in the form of electric charges on transistors or capacitors. Information stored in RAM cannot be retained without power. It is frequently used for the operation of a computer’s basic functions, such as loading operating systems, running applications, and keeping track of open applications and files. RAM is fast and typically offers more storage than ROM.

ROM

Read-Only Memory (ROM) is a type of non-volatile memory that can be read from, but not written to. It is read-only because the information contained in it has been hard-wired onto it during the manufacturing process. ROM stores certain information required to boot the computer and run its basic functions, such as the power-on-self-test (POST). ROM is typically used for instructions and data necessary for the computer’s operating system.

70P249L65BYGI8 Application Fields and Working Principle

The 70P249L65BYGI8 application field is mainly for system development and storage product applications. The device is a single-chip, byte-interleaved serial NOR Flash memory. It is organized as 64K x 32 bits consisting of 32768 x 8 words, and can be configured to be 32K x 32, 16K x 32, 8K x 32, and 4K x 32. The 70P249L65BYGI8 is intended for low-power applications.The device is organized in three x 8-byte sectors. Each sector contains 32 x 256-byte pages and 32 x 32-freeze word Protection registers. Each page contains eight x 32 bit registers. The data payload is held in the corresponding eight byte sectors, so the page is accessible in any order. The device provides an internal command set, which can control all aspects of the memory, including program, erase, read and write operations. An external 8-bit instruction register stores the instructions received from the host side, and the device responds with two 8-bit status bits, which can be read by the host to determine the execution status of the internal instruction. The device utilizes an asynchronous two-wire serial bus for communications, in which the device transfers data on command. In terms of working principles, the 70P249L65BYGI8 has the following features.

• Read: Reading is accessed by sending the “Read” command and then clocking in the addresses. A data ready signal is sent after each address is clocked.
• Program: Program is accessed by sending the “Program” command and then clocking in the addresses. A data ready signal is sent after each address is clocked.
• Erase: Erase is accessed by sending the “Erase” command and then clocking in the addresses. A data ready signal is sent after each address is clocked.
• Security lock: Security lock is used to protect the data from unauthorized access by setting bits in a protection register.

Conclusion

Memory plays an important role in computers, and it is important to understand the various types of memory and their application fields and working principles. The 70P249L65BYGI8 is a single-chip, byte-interleaved serial NOR Flash memory, and is mainly used for system development and storage product applications. It provides an internal command set, which can control all aspects of the memory, such as read, program, erase, and protection. Understanding these aspects and their working principles helps to make more informed decisions when working with memory.

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