SST39SF040-45-4C-NHE-T

Series:	SST39 MPF™
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Memory Type:	Non-Volatile
Memory Format:	FLASH
Technology:	FLASH
Memory Size:	4Mb (512K x 8)
Write Cycle Time - Word, Page:	20µs
Access Time:	45ns
Memory Interface:	Parallel
Voltage - Supply:	4.5 V ~ 5.5 V
Operating Temperature:	0°C ~ 70°C (TA)
Mounting Type:	Surface Mount
Package / Case:	32-LCC (J-Lead)
Supplier Device Package:	32-PLCC
Base Part Number:	SST39SF040

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Introduction to SST39SF040-45-4C-NHE-T

The SST39SF040-45-4C-NHE-T is a 256K x 8 bit CMOS self-programming Flash memory. It is designed to reduce development time and cost by providing a versatile, low-cost solution for different applications. The device is optimized for use in consumer applications, such as digital voice recorders, digital cameras, and home entertainment products. The SST39SF040-45-4C-NHE-T family features an array of password protection features designed to ensure data security in such applications.

Application Field

The main application area for the SST39SF040-45-4C-NHE-T is consumer electronics. The device is ideal for applications such as digital voice recorders, digital cameras, and home entertainment products. The device is also suitable for automotive and industrial applications, such as embedded system design, due to its low-power operation, wide temperature range and rugged operating conditions.

Functional Blocks

The SST39SF040-45-4C-NHE-T consists of a memory array, a controller, a buffer, a control bus, and a status bus. The memory array is organized as 256K x 8 bits. The controller is responsible for accessing the memory array and controlling read and write accesses. The buffer is used to store the data that is being read or written to the memory. The control bus is used to control the transfer of data between the controller and the buffer. The status bus provides the controller with information about the status of the transfer operation.

Working Principle

The basic principle of operation for the SST39SF040-45-4C-NHE-T is that a chip select signal (CS) is enabled to start an access operation. Address and data are then sent to the device via an address bus and a data bus, respectively. The device then decodes the address and accesses the memory array. The data is then transferred to or from the memory array through the buffer. On completion of the access operation, the CS signal is de-asserted and the access process is completed.

Passwords

The SST39SF040-45-4C-NHE-T offers password-protected data protection features. It can be programmed with multiple passwords that can be used to protect data from unauthorized access. Once a password is successfully entered, the device allows access to the protected data. These features are useful in applications such as digital voice recorders and digital cameras, where data security is important.

Security Features

The SST39SF040-45-4C-NHE-T offers additional security features for protecting data from unauthorized access. It provides multiple write protection bits at both the sector level and block level to prevent unauthorized write operations. It also has an erase verification feature that can detect any attempted erasure of the device. These features make the device suitable for use in applications where data security is important.

Conclusion

The SST39SF040-45-4C-NHE-T is a low-cost self-programming Flash memory optimized for use in consumer applications such as digital voice recorders, digital cameras, and home entertainment products. It features an array of password protection features designed to ensure data security in such applications. It also offers additional security features such as write protection and erase verification. With its user-friendly features and reliability, it is an ideal solution for a variety of applications.

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