DS1244Y-70
56k NV SRAM featuring a covert clockDS1244Y-70
56k NV SRAM featuring a covert clock
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Manufacturer Part # : DS1244Y-70
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Package/Case: EDIP-28
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Brand: Maxim Integrated
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Product Categories : Real Time Clocks
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Series : DS1244
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DS1244Y-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!
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DS1244Y-70 Details
The DS1244Y-70 is a robust real-time clock (RTC) from Analog Devices, designed for reliable data retention in industrial control systems, embedded systems, transportation systems, and telecommunications equipment. This device provides reliable data retention during power loss or system shutdown, making it ideal for applications where data integrity is crucial.
Pinout
- VCC (1): Positive Power Supply
- GND (2): Ground
- SCL (3): Serial Clock Input
- SDA (4): Serial Data Input/Output
- RST (5): Reset Input
- INT (6): Interrupt Output
Key Features
- Real-Time Clock (RTC) Functionality: Provides accurate timekeeping and date information.
- Data Retention during Power Loss: Ensures reliable data retention during power loss or system shutdown.
- Low Power Consumption: Optimized for low power consumption, making it suitable for battery-powered devices.
- High Accuracy: Offers high accuracy and stability in timekeeping and date information.
Applications
- Industrial Control Systems: Suitable for industrial control systems requiring reliable data retention and accurate timekeeping.
- Embedded Systems: Ideal for embedded systems where low power consumption and high accuracy are critical.
- Transportation Systems: Used in transportation systems, such as automotive and aerospace applications, where reliability and accuracy are essential.
Where to Use
The DS1244Y-70 is suitable for applications that require reliable real-time clock functionality, low power consumption, and high accuracy. It is ideal for systems where data integrity is crucial, such as industrial control systems, embedded systems, and transportation systems.
How to Use
To use the DS1244Y-70, connect the VCC pin to a positive power supply, GND to ground, SCL to the serial clock input, SDA to the serial data input/output, RST to the reset input, and INT to the interrupt output. Ensure proper connections for power supply, ground, and communication bus lines.
Application Circuit
The application circuit diagram for the DS1244Y-70 illustrates how to connect the RTC module to a microcontroller or other system components. It includes connections for power supply, ground, and communication bus lines, ensuring proper operation and reliable data transmission.
(Tip: For detailed circuit diagram connections and usage guide, refer to the datasheet.)
Equivalents
- DS1307: A similar RTC module from Maxim Integrated offering comparable features and performance.
- PCF8563: An alternative RTC module from NXP Semiconductors with equivalent functionality.
Complementary
The DS1244Y-70 can be complemented by the AD9850, a high-performance clock generator that offers additional features such as frequency synthesis and phase-lock loop (PLL) control. When selecting complementary components, ensure that their features and specifications align with your specific application requirements for optimal performance and compatibility.
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
Product Category ! | Real Time Clock | RoHS | N |
Package / Case | EDIP-28 | RTC Bus Interface | Parallel, Phantom Clock |
Date Format ! | YY-MM-DD-dd | Time Format ! | HH:MM:SS:hh |
RTC Memory Size | 32 kB | Supply Voltage - Max | 5.5 V |
Supply Voltage - Min | 4.5 V | Minimum Operating Temperature | 0 C |
Maximum Operating Temperature ! | + 70 C | Brand | Analog Devices / Maxim Integrated |
Product Type ! | Real Time Clocks | Series | DS1244Y |
Subcategory | Clock & Timer ICs | Part # Aliases | DS1244Y |
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 DS1244Y-70?
The DS1244Y-70 is a non-volatile static RAM (NVSRAM) integrated circuit developed by Maxim Integrated. It combines the functionality of a static RAM with a non-volatile storage element, providing data retention even when power is removed. This makes it suitable for applications where critical data must be preserved during power interruptions, such as industrial automation, data logging, and embedded systems.
How Does DS1244Y-70 Work?
The DS1244Y-70 operates by utilizing a combination of volatile static RAM and non-volatile memory cells. When power is present, it functions as a regular static RAM, allowing read and write operations. During power loss, the non-volatile elements retain the data, ensuring that critical information is preserved for a specified period. When power is restored, the device can continue normal operation without data loss.
How Many Pins does DS1244Y-70 have and What are the Functions of the Pinout Configuration?
The DS1244Y-70 is housed in a 28-pin EDIP (Extended Plastic Dual-In-Line Package) package. The pinout configuration includes:
- VCC: Power supply pin.
- GND: Ground pin.
- CE1, CE2: Chip enable inputs for bank 1 and bank 2, respectively.
- OE: Output enable input.
- W: Write enable input.
- BS: Battery switch input for selecting between battery and external power.
- NC: No connect pin.
- A0-A14: Address input pins.
- DQ0-DQ7: Data input/output pins.
- NC: No connect pin.
- DS, RST: Data store and reset control pins for non-volatile elements.
- VBAT: Battery input for non-volatile data retention.
What are the Pros and Cons of DS1244Y-70?
Pros:
- Non-Volatile Data Storage: Preserves critical data during power interruptions, eliminating the need for external backup solutions.
- High Density: Offers a large storage capacity in a single chip, reducing the need for multiple components.
- Automatic Switchover: Seamlessly switches between battery and external power sources for continuous data retention.
- Industrial Grade: Suitable for harsh environments and industrial applications requiring reliable data storage.
Cons:
- Cost: NVSRAM devices may have a higher cost compared to traditional volatile RAM solutions.
- Complex Interfacing: Requires careful consideration of control signals and power management for proper operation.
Are There Any Equivalents/Alternatives to DS1244Y-70 for Recommendation?
- The CY14B101Q-SNXI from Cypress Semiconductor is a similar non-volatile static RAM offering.
- Alternatives to the DS1244Y-70 include the FM18W08-SG from Cypress Semiconductor and the M48Z02-150PC1 from STMicroelectronics.
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