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See Technical Specifications

DS1225AD-170+

NVSRAM (Non-Volatile SRAM) Memory IC 64Kbit Parallel 170 ns 28-EDIP

Manufacturer:

Analog Devices, Inc
Mfr.Part #:

DS1225AD-170+
Datasheet:

DS1225AD-170+ Datasheet (PDF)
Memory Type:

Non-Volatile
Memory Format:

NVSRAM
Technology:

NVSRAM (Non-Volatile SRAM)
Memory Size:

64Kbit
EDA/CAD Models:

Request Free CAD Models for DS1225AD-170+

Email: [email protected]

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Tel: +852 95804164

DS1225AD-170+ General Description

The DS1225AB and DS1225AD are 65,536-bit, fully static, nonvolatile (NV) SRAMs organized as 8192 words by 8 bits. Each NV SRAM has a self-contained lithium energy source and control circuitry which constantly monitors V_CC for 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. The NV SRAMs can be used in place of existing 8k x 8 SRAMs directly conforming to the popular bytewide 28-pin DIP standard. The devices also match the pinout of the 2764 EPROM and the 2864 EEPROM, allowing direct substitution while enhancing performance. There is no limit on the number of write cycles that can be executed and no additional support circuitry is required for microprocessor interfacing.

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Key Features

10 years minimum data retention in the absence of external power
Data is automatically protected during power loss
Directly replaces 8k x 8 volatile static RAM or EEPROM
Unlimited write cycles
Low-power CMOS
JEDEC standard 28-pin DIP package
Read and write access times of 70ns
Lithium energy source is electrically disconnected to retain freshness until power is applied for the first time
Full ±10% V_CC operating range (DS1225AD)
Optional ±5% V_CC operating range (DS1225AB)
Optional industrial temperature range of -40°C to +85°C, designated IND

Specifications

Category	Integrated Circuits (ICs)MemoryMemory	Series	-
Memory Type	Non-Volatile	Memory Format	NVSRAM
Technology	NVSRAM (Non-Volatile SRAM)	Memory Size	64Kbit
Memory Organization	8K x 8	Memory Interface	Parallel
Write Cycle Time - Word, Page	170ns	Access Time	170 ns
Voltage - Supply	4.5V ~ 5.5V	Operating Temperature	0°C ~ 70°C (TA)
Mounting Type	Through Hole	Base Product Number	DS1225A
Product Category	NVRAM	Shipping Restrictions	Available in USA only.
Interface Type	Parallel	Organization	8 k x 8
Data Bus Width	8 bit	Supply Voltage - Max	5.5 V
Supply Voltage - Min	4.5 V	Operating Supply Current	75 mA
Minimum Operating Temperature	0 C	Maximum Operating Temperature	+ 70 C
Height	9.4 mm	Length	39.12 mm
Mounting Style	Through Hole	Operating Supply Voltage	5 V
Product Type	NVRAM	Factory Pack Quantity	12
Subcategory	Memory & Data Storage	Type	NVSRAM
Width	18.29 mm	Part # Aliases	DS1225AD 90-1225A+D17