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DS1486
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DS1486
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Service & Packaging
Service & Packaging
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DS1486 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
FEATURES 128 kbytes of user NV RAM Integrated NV SRAM, real-time clock, crystal, power-fail control circuit and lithium energy source Totally nonvolatile with over 10 years of operation in the absence of power Watchdog timer restarts an out-of-control processor Alarm function schedules real-time related activities such as system wakeup Programmable interrupts and square wave output All registers are individually addressable via the address and data bus Interrupt signals active in power-down mode
Key Features
- 128 kbytes of user NV RAM
- Integrated NV SRAM, real-time clock, crystal, power-fail control circuit and lithium energy source
- Totally nonvolatile with over 10 years of operation in the absence of power
- Watchdog timer restarts an out-of-control processor
- Alarm function schedules real-time related activities such as system wakeup
- Programmable interrupts and square wave output
- All registers are individually addressable via the address and data bus
- Interrupt signals active in power-down mode
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Manufacturer | Texas Instruments | Product Category ! | Real Time Clocks |
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 DS1486?
The DS1486 is a non-volatile timekeeping RAM (NVSRAM) module manufactured by Maxim Integrated. It combines a static RAM with a real-time clock (RTC) to provide timekeeping functions and data storage with battery backup.
How Does DS1486 Work?
The DS1486 operates by storing data in its static RAM portion for volatile storage, while the real-time clock function keeps track of time even when the main power source is disconnected. A backup battery maintains power to the RTC and retains data in the SRAM during power loss.
How Many Pins does DS1486 have and What are the Functions of the Pinout Configuration?
The DS1486 is typically provided in a DIP (Dual Inline Package) or SOIC (Small Outline Integrated Circuit) housing with a pinout configuration that includes:
- VCC: Main power supply pin for the chip.
- GND: Ground pin for the chip.
- CE, OE, WE: Chip enable, output enable, and write enable control pins for accessing the memory.
- Address Pins (A0-A11): Input pins for selecting memory locations.
- Data Pins (DQ0-DQ7): Data input/output pins for transferring information.
- BAT: Battery input pin for backup power.
What are the Pros and Cons of DS1486?
Pros:
- Combines Timekeeping and Data Storage: Integrates a real-time clock with non-volatile RAM for complete timekeeping and data storage solutions.
- Battery Backup: Maintains data integrity during power loss with a backup battery.
- Easy Integration: Provides easy interfacing with a microcontroller for seamless integration into systems.
- Reliable Operation: Ensures continuous timekeeping and data retention for critical applications.
Cons:
- Limited Memory Capacity: May have limited storage capacity compared to standalone memory modules.
- Additional Components: Requires a backup battery for long-term data retention, adding to system complexity.
Are There Any Equivalents/Alternatives to DS1486 for Recommendation?
- An alternative to the DS1486 is the M48Z02 from STMicroelectronics, offering similar timekeeping and non-volatile memory functions.
- Equivalents to the DS1486 include the IS61LV25616AL from Integrated Silicon Solution, Inc. (ISSI) and the FM18W08 from Ramtron (Cypress Semiconductor).
