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Name: DS1245Y-120IND+
Brand: Analog Devices Inc./Maxim Integrated
SKU: DS1245Y-120IND+
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Analog Devices Inc./Maxim Integrated DS1245Y-120IND+

Part No.:: DS1245Y-120IND+

Manufacturer:: Analog Devices Inc./Maxim Integrated

Package:: 32-DIP Module (0.600, 15.24mm)

Datasheet:: DS1245Y-120IND+.pdf

Description:: IC NVSRAM 1MBIT PARALLEL 32EDIP

In Stock:: 3671

Quantity:: Add To Cart

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DS1245Y-120IND+ Specifications

Package/Case:
32-DIP Module (0.600, 15.24mm)
Packaging:
Tube
Series:
-
ProductStatus:
Active
MemoryType:
Non-Volatile
MemoryFormat:
NVSRAM
Technology:
NVSRAM (Non-Volatile SRAM)
MemorySize:
1Mb (128K x 8)
MemoryInterface:
Parallel
ClockFrequency:
-
WriteCycleTime-WordPage:
120ns
AccessTime:
120 ns
Voltage-Supply:
4.5V ~ 5.5V
OperatingTemperature:
-40°C ~ 85°C (TA)
MountingType:
Through Hole

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DS1245Y-120IND+ information

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DS1245Y-120IND+ Typical application Circuitry

DS1245Y-120IND+

The DS1245Y-120IND+ is a high-capacity 1-Megabit (1024k x 8) Nonvolatile SRAM designed by Maxim Integrated. It combines the convenience and speed of SRAM with nonvolatile data retention capabilities, making it highly suitable for applications that require data preservation across power cycles, particularly in industrial environments where reliability under extreme conditions is critical.

Key Features and Parameters:

- 1-Megabit Storage: Offers a substantial amount of data storage with SRAM access speeds.

- Integrated Power-Fail Deselect: Automatically switches to an onboard lithium battery to maintain data retention during power loss.

- Unlimited Read/Write Cycles: Facilitates frequent data updates without degradation.

- Fast Access Time: Features access times as low as 120 ns, enabling rapid data access.

- Industrial Temperature Range: Designed to operate in extended industrial temperature ranges, from -40°C to +85°C, ensuring reliability in harsh environments.

Application Scenario: Using the DS1245Y-120IND+ in an industrial automation system for storing critical configuration settings and operational logs that must be preserved during power outages.

Circuit Design:

Incorporating the DS1245Y-120IND+ into an industrial automation system involves careful consideration of its pin connections:

1. Power Supply Connection:

- VCC (Pin 32): Connect to the +5V supply from the industrial system's power source. Place decoupling capacitors near VCC to ensure a stable supply, crucial for reliable SRAM operation.

2. Ground Connection:

- GND (Pin 16): Connect to the system's ground plane. A solid grounding is essential for minimizing electrical noise.

3. Data Bus Interface:

- DQ0 to DQ7 (Pins 8-15): Interface these pins with the data bus of the system's microcontroller or main processor. Maintaining signal integrity is vital for accurate data transfers.

4. Address Bus Connection:

- A0 to A18 (Pins 1-7, 17-31, and 33-34): Connect these pins to the address bus for accessing specific memory locations. Ensuring precise addressing is key for correct data storage and retrieval.

5. Control Signals:

- WE (Write Enable, Pin 29), CE (Chip Enable, Pin 22), OE (Output Enable, Pin 24): Accurately control these signals from the microcontroller to manage read/write operations. Correct timing of these signals ensures the integrity of data operations.

Design Considerations:

- Power-Fail Management: Implement additional circuitry or utilize the DS1245Y-120IND+'s built-in features to manage transitions between normal and battery-backed operation smoothly.

- Battery Life and Replacement: Monitor the battery status and plan for its eventual replacement to maintain nonvolatile data retention capabilities.

- Environmental Conditions: Given the industrial application, ensure that the DS1245Y-120IND+ and associated circuitry are protected from extreme temperatures, dust, and moisture.

- EMI Protection: Apply appropriate shielding and filtering to protect data integrity against electromagnetic interference, which can be prevalent in industrial settings.

- Data Integrity Checks: Incorporate mechanisms such as checksums or CRC within the system firmware to verify data integrity upon each read operation, crucial for maintaining operational reliability.

By deploying the DS1245Y-120IND+ in an industrial automation system, engineers can provide robust data storage solutions capable of preserving essential information through power interruptions and under demanding environmental conditions. This application exemplifies the DS1245Y-120IND+'s role in enhancing system resilience, highlighting its suitability for industrial applications where data integrity and system reliability are paramount.

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(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

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