DS1225AB
PRODUCTION64k Nonvolatile SRAM
- Part Models
- 7
- 1ku List Price
- Starting From $15.24
Overview
- 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% VCC operating range (DS1225AD)
- Optional ±5% VCC operating range (DS1225AB)
- Optional industrial temperature range of -40°C to +85°C, designated IND
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 VCC 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.
Documentation
Data Sheet 1
Design Note 5
Technical Articles 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| DS1225AB-150IND+ | Encapsulated Dual-In-Line Module | ||
| DS1225AB-170+ | Encapsulated Dual-In-Line Module | ||
| DS1225AB-200+ | Encapsulated Dual-In-Line Module | ||
| DS1225AB-200IND+ | Encapsulated Dual-In-Line Module | ||
| DS1225AB-70+ | Encapsulated Dual-In-Line Module | ||
| DS1225AB-70IND+ | Encapsulated Dual-In-Line Module | ||
| DS1225AB-85+ | Encapsulated Dual-In-Line Module |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Sep 29, 2015 - 1479K ASSEMBLY |
||
| DS1225AB-150IND+ | PRODUCTION | |
| DS1225AB-170+ | PRODUCTION | |
| DS1225AB-200+ | PRODUCTION | |
| DS1225AB-200IND+ | PRODUCTION | |
| DS1225AB-70+ | PRODUCTION | |
| DS1225AB-70IND+ | PRODUCTION | |
| DS1225AB-85+ | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
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