Datasheet > DS1249Y70

DS1249Y70

更新时间： 2024-11-05 22:15:39

品牌	Logo	应用领域
达拉斯 - DALLAS		静态存储器
页数	文件大小	规格书
8页	155K
描述
2048k Nonvolatile SRAM

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中文翻译

获取价格

数据手册

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DS1249Y70 数据手册

DS1249Y/AB

2048k Nonvolatile SRAM

www.maxim-ic.com

FEATURES

PIN ASSIGNMENT

ꢀꢁ10 years minimum data retention in the

absence of external power

A16

A14

A12

V_CC

A15

A17

A13

ꢀꢁData is automatically protected during power

loss

ꢀꢁUnlimited write cycles

ꢀꢁLow-power CMOS operation

ꢀꢁRead and write access times as fast as 70 ns

ꢀꢁLithium energy source is electrically

disconnected to retain freshness until power is

applied for the first time

ꢀꢁFull ±=10% V_CCoperating range (DS1249Y)

ꢀꢁOptional ±=5% V_CCoperating range

(DS1249AB)

A11

A10

DQ7

DQ6

DQ5

DQ4

DQ3

DQ0

DQ1

DQ2

GND

ꢀꢁOptional industrial temperature range of

-40°C to +85°C, designated IND

ꢀꢁJEDEC standard 32-pin DIP package

32-Pin ENCAPSULATED PACKAGE

740-mil EXTENDED

PIN DESCRIPTION

A0 - A17

DQ0 - DQ7

- Address Inputs

- Data In/Data Out

- Chip Enable

- Write Enable

- Output Enable

- Power (+5V)

- Ground

V_CC

GND

- No Connect

DESCRIPTION

The DS1249 2048k Nonvolatile SRAMs are 2,097,152-bit, fully static, nonvolatile SRAMs organized as

262,144 words by 8 bits. Each NV SRAM has a self-contained lithium energy source and control circuitry

which constantly monitors V_CCfor an out-of-tolerance condition. When such a condition occurs, the

lithium energy source is automatically switched on and write protection is unconditionally enabled to

prevent data corruption. There is no limit on the number of write cycles which can be executed and no

additional support circuitry is required for microprocessor interfacing.

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与DS1249Y70相关器件

型号	品牌	获取价格	描述	数据表
DS1249Y-70	ETC	获取价格	NVRAM (Battery Based)
DS1249Y-70#	MAXIM	获取价格	Non-Volatile SRAM Module, 256KX8, 70ns, CMOS, 0.740 INCH, DIP-32
DS1249Y-70IND	ROCHESTER	获取价格	256KX8 NON-VOLATILE SRAM MODULE, 70ns, DMA32, 0.740 INCH, DIP-32
DS1249Y-70-IND	ETC	获取价格	NVRAM (Battery Based)
DS1249Y-70IND#	MAXIM	获取价格	Non-Volatile SRAM Module, 256KX8, 70ns, CMOS, 0.740 INCH, DIP-32
DS1249Y-70IND#	ROCHESTER	获取价格	256KX8 NON-VOLATILE SRAM MODULE, 70ns, DIP32, 0.740 INCH, ROHS COMPLIANT, DIP-32
DS1249Y-85	ETC	获取价格	NVRAM (Battery Based)
DS1249Y-85-IND	ETC	获取价格	NVRAM (Battery Based)
DS1249Y-85IND#	MAXIM	获取价格	Non-Volatile SRAM Module, 256KX8, 85ns, CMOS, PDIP32, 0.600 INCH, PLASTIC, DIP-32
DS1250	DALLAS	获取价格	Memory Circuit, CMOS, PDIP28,