DS1245ABP-70

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Memory Type:	Non-Volatile
Memory Format:	NVSRAM
Technology:	NVSRAM (Non-Volatile SRAM)
Memory Size:	1Mb (128K x 8)
Write Cycle Time - Word, Page:	70ns
Access Time:	70ns
Memory Interface:	Parallel
Voltage - Supply:	4.75 V ~ 5.25 V
Operating Temperature:	0°C ~ 70°C (TA)
Mounting Type:	Surface Mount
Package / Case:	34-PowerCap™ Module
Supplier Device Package:	34-PowerCap Module
Base Part Number:	DS1245AB

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DS1245ABP-70 Memory Application Field and Working Principle

The DS1245ABP-70 is a dynamic random-access memory (DRAM) designed by Dallas Semiconductor and is part of the MicroMonitor family of DRAM products. The DS1245ABP-70 is a 63-bit, 3.2V DRAM device that is available in both a 37-pin DIP and a 39-pin SOIC package. It has a 66 MHz clock and can operate up to 100 MHz for many operating environments. It has a 7.5 ns asynchronous access time, a fast refresh cycle, and a wide operating temperature range.The DS1245ABP-70 is ideal for high-performance, low-power applications that require a larger memory capacity than can be provided with traditional SRAM devices. The DS1245ABP-70 can be used in embedded systems, such as portable or embedded applications, point-of-sale (POS) systems, board computers, and any other applications that require a robust and cost-effective memory solution.The DS1245ABP-70 operates in a self-refreshing mode, so that it needs no additional refresh circuitry or clock to keep the data stored. It also has a self-timed refresh cycle and a refresh counter that allow the user to control the refresh cycle frequency. The device also supports a watchdog timer and can run at input clocks of up to 100 MHz.The DS1245ABP-70 consists of two internal SRAM blocks, each of which is 16,777,216 bits wide. The first internal SRAM block is 64K (65536*8) wide and the second internal SRAM block is 256K (262144*8) wide. The device also includes a bus pin for data input, an address pin for accessing the memory locations, and an enable and write/read select pin for data logic.In terms of performance, the DS1245ABP-70 offers a wide range of access speeds, from 6.25 to 7.5 ns synchronous access, as well as a 6.25 to 7.5 ns asynchronous access time. It also provides a fast refresh cycle of 9.6 ms, an adjustable refresh cycle of up to 160 ms, and a refresh counter that can be set to a refresh interval of up to 432 seconds.In terms of reliability and longevity, the DS1245ABP-70 has an unlimited write cycle life, a minimum data retention of 40 years, and immunity to alpha particle radiation up to 30 Kevlin. It also has a maximum-write limitation to prevent over-writing stored data and a built-in error correction code (ECC) to detect and fix certain kinds of errors.In conclusion, the DS1245ABP-70 is an ideal memory solution for applications that require a robust, low-power and cost-effective memory solution. Its wide operating temperature range, fast access times, and error correction code make it a great choice for any application that requires high performance and reliable data storage.

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