Datasheet > DS1249Y/AB

DS1249Y/AB

更新时间： 2024-09-14 23:48:39

品牌	Logo	应用领域
其他 - ETC		静态存储器
页数	文件大小	规格书
8页	161K
描述
2048K Nonvolatile SRAM

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中文翻译

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数据手册

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DS1249Y/AB 数据手册

DS1249Y/AB

2048k Nonvolatile SRAM

www.maxim-ic.com

FEATURES

PIN ASSIGNMENT

C 10 years minimum data retention in the

absence of external power

A16

A14

A12

V_CC

A15

A17

A13

C Data is automatically protected during power

loss

C Unlimited write cycles

C Low-power CMOS operation

C Read and write access times as fast as 70 ns

C Lithium energy source is electrically

disconnected to retain freshness until power is

applied for the first time

A11

A10

DQ7

DQ6

DQ5

DQ4

DQ3

DQ0

DQ1

DQ2

GND

C Full Mꢀ10% V_CCoperating range (DS1249Y)

C Optional Mꢀ5% V_CCoperating range

(DS1249AB)

C Optional industrial temperature range of

-40LC to +85LC, designated IND

C 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DS1249Y/AB相关器件

型号	品牌	获取价格	描述	数据表
DS1249Y100	DALLAS	获取价格	2048k Nonvolatile SRAM
DS1249Y-100	ETC	获取价格	NVRAM (Battery Based)
DS1249Y-100IND	MAXIM	获取价格	Non-Volatile SRAM Module, 256KX8, 100ns, CMOS, PDIP32, DIP-32
DS1249Y-100-IND	ETC	获取价格	NVRAM (Battery Based)
DS1249Y70	DALLAS	获取价格	2048k Nonvolatile SRAM
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