PSD835G2-90U

Series:	--
Packaging:	Tray
Part Status:	Obsolete
Memory Type:	Non-Volatile
Memory Format:	FLASH
Technology:	FLASH
Memory Size:	4Mb (512K x 8)
Write Cycle Time - Word, Page:	--
Access Time:	90ns
Memory Interface:	Parallel
Voltage - Supply:	4.5 V ~ 5.5 V
Operating Temperature:	0°C ~ 70°C (TA)
Mounting Type:	Surface Mount
Package / Case:	80-LQFP
Supplier Device Package:	80-LQFP (12x12)
Base Part Number:	PSD835G

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Introduction

PSD835G2-90U is a type of memory product. It is a non-volatile, robust memory device designed to provide optimal performance and reliable operation in applications requiring high performance and long life cycles. It is made up of a high-speed flash memory, an external silicon package, and associated support circuitry.

Applications

PSD835G2-90U memories are primarily used in storage, data logging, communications, and graphics applications. They offer increased reliability, improved data integrity and robustness, and significantly lower power consumption than traditional non-volatile memories.The most common applications of PSD835G2-90U memories include embedded applications such as embedded controllers, handheld devices, automobiles, aircraft avionics, medical equipment, GPS and navigation systems, industrial automation, point-of-sale terminals, and aerospace applications.

Applications

The PSD835G2-90U memory is designed to be universally compatible with existing industry standards and specifications. It supports a variety of operating systems and platforms, including Windows, Linux, RTOS, and VxWorks.The device supports Features such as execution in place, external data/address busses with multiplexing, four write modes, and alphanumeric data encoding using either 4-bit or 5-bit characters.The PSD835G2-90U memory is designed to operate in temperatures ranging from -40 C to +85 C. It is available in a variety of packages - including SOIC, TSOP, LFBGA, and SPI bus - to accommodate a variety of design requirements.

Working Principle

The PSD835G2-90U memory consists of a static random access memory (SRAM) array, an internal memory controller, and a number of additional support functions. At the heart of the device is the SRAM array, which is organized as a single bank of 1024-byte rows and each row can be written or read as a whole (block). All information stored in the SRAM array is continually refreshed by the memory controller. The memory controller supports four different write modes which can be used based on the application\'s needs. These modes are: write protect, sequential write, page write, and random write. The device also features various features that improve its security. These features include write protect and write protection lockout, error correction codes (ECC), watchdog timer, status bit monitoring and power failure detection.

Conclusion

The PSD835G2-90U is suitable for a wide variety of applications in the fields of storage, data logging, communications and graphics. This non-volatile, robust memory device combines high performance and long life cycles and securely stores date with advanced security features. It supports four different write modes which offers the flexibility to meet application specific needs. The device is available in various packages and operating temperatures ranges, making it ideal for a variety of applications.

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