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DS1245Y-70
NVSRAM (Non-Volatile SRAM) Memory IC 1Mbit Parallel 70 ns 32-EDIPDS1245Y-70
NVSRAM (Non-Volatile SRAM) Memory IC 1Mbit Parallel 70 ns 32-EDIP
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Manufacturer Part # : DS1245Y-70
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Package/Case: EDIP-32
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Brand: Analog Devices
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Product Categories : Memory
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Initiate the application within 90 days from the shipment date.
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DS1245Y-70 DataSheet
Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!
Details
The DS1245 1024k Nonvolatile SRAMs are1,048,576-bit, fully static, nonvolatile SRAMs organized as 131,072 words by 8 bits. Each complete 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. DIP-package DS1245 devices can be used in place of existing 128k x 8 static RAMs directly conforming to the popular bytewide 32-pin DIP standard. DS1245 devices in the PowerCap Module package are directly surface mountable and are normally paired with a DS9034PC PowerCap to form a complete Nonvolatile SRAM module. There is no limit on the number of write cycles that can be executed and no additional support circuitry is required for microprocessor interfacing.FEATURES ■ 10 years minimum data retention in the absence of external power ■ Data is automatically protected during power loss ■ Replaces 128k x 8 volatile static RAM, EEPROM or Flash memory ■ Unlimited write cycles ■ Low-power CMOS ■ Read and write access times of 70 ns ■ Lithium energy source is electrically disconnected to retain freshness until power is applied for the first time ■ Full ±10% VCC operating range (DS1245Y) ■ Optional ±5% VCC operating range (DS1245AB) ■ Optional industrial temperature range of -40°C to +85°C, designated IND ■ JEDEC standard 32-pin DIP package ■ PowerCap Module (PCM) package - Directly surface-mountable module - Replaceable snap-on PowerCap provides lithium backup battery - Standardized pinout for all nonvolatile SRAM products - Detachment feature on PowerCap allows easy removal using a regular screwdriver
Key Features
- 10 years minimum data retention in the absence of external power
- Data is automatically protected during power loss
- Replaces 128k x 8 volatile static RAM, EEPROM or Flash memory
- Unlimited write cycles
- Low-power CMOS
- Read and write access times of 70 ns
- Lithium energy source is electrically disconnected to retain freshness until power is applied for the first time
- Full ±10% VCC operating range (DS1245Y)
- Optional ±5% VCC operating range (DS1245AB)
- Optional industrial temperature range of -40°C to +85°C, designated IND
- JEDEC standard 32-pin DIP package
- PowerCap Module (PCM) package
- - Directly surface-mountable module
- - Replaceable snap-on PowerCap provides lithium backup battery
- - Standardized pinout for all nonvolatile SRAM products
- - Detachment feature on PowerCap allows easy removal using a regular screwdriver
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Product Category ! | NVRAM | Package / Case | EDIP-32 |
| Interface Type | Parallel | Memory Size ! | 1 Mbit |
| Organization | 128 k x 8 | Data Bus Width | 8 bit |
| Access Time | 70 ns | Supply Voltage - Max | 5.5 V |
| Supply Voltage - Min | 4.5 V | Operating Supply Current | 85 mA |
| Minimum Operating Temperature | 0 C | Maximum Operating Temperature ! | + 70 C |
| Series | DS1245Y | Brand | Analog Devices / Maxim Integrated |
| Height | 10.92 mm | Length | 44.19 mm |
| Mounting Style | Through Hole | Operating Supply Voltage ! | 5 V |
| Product Type ! | NVRAM | Factory Pack Quantity | 11 |
| Subcategory | Memory & Data Storage | Type | NVSRAM |
| Width | 18.8 mm | Part # Aliases | DS1245Y |
Datasheet PDF
Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.
FAQs
What is DS1245Y-70?
The DS1245Y-70 is a 1024k NV SRAM (non-volatile static random access memory) IC with a 70ns access time, manufactured by Maxim Integrated. It combines the features of a conventional SRAM with a non-volatile element to provide data retention even when power is removed, making it ideal for applications requiring both high-speed access and non-volatile data storage.
How Does DS1245Y-70 Work?
The DS1245Y-70 operates as a non-volatile memory device with a static random access memory core. It uses a small onboard lithium battery to retain data when the main power source is removed. This allows the DS1245Y-70 to function as a high-speed read/write memory while providing data retention capabilities without the need for a separate non-volatile memory device.
How Many Pins does DS1245Y-70 have and What are the Functions of the Pinout Configuration?
The DS1245Y-70 is housed in a 32-pin EDIP (Extended Dual Inline Package) package. The pinout configuration includes:
- Address Pins: Pins for specifying the memory address for read and write operations.
- Data Pins: Input and output pins for the data used by the memory.
- Control Pins: Pins for controlling the memory operations, such as chip enable, output enable, and write enable.
- Battery Pins: Pins for connecting the onboard lithium battery for data retention.
What are the Pros and Cons of DS1245Y-70?
Pros:
- High-Speed Access: Provides fast access times suitable for high-performance systems.
- Non-Volatile Data Storage: Retains data even when the main power is removed, eliminating the need for external non-volatile memory components.
- Standard Package: The 32-pin EDIP package allows for easy integration into existing designs.
- Reliable Data Retention: The onboard lithium battery provides long-term data retention without the need for frequent battery replacements.
Cons:
- Battery Maintenance: Requires periodic replacement of the onboard lithium battery to ensure continuous data retention.
- Limited Endurance: The non-volatile element may have limited write/erase cycles compared to traditional SRAM.
- Package Size: The 32-pin EDIP package may be larger than alternative package options.
Are There Any Equivalents/Alternatives to DS1245Y-70 for Recommendation?
- The M48Z02 from STMicroelectronics is a comparable 1024k NV SRAM with similar non-volatile features.
- Alternatives to the DS1245Y-70 include the FM1608 from Cypress Semiconductor and the CAT28C256 from ON Semiconductor.
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