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Product Detailed Parameters
- Description：IC RTC TIMER PERIPH PAR 28PLCC
- Series：-
- Package：Tube
- Mfr：Texas Instruments
- Type：Timer Clock Peripheral (TCP)
- Features：Alarm, Leap Year
- Memory Size：44B
- Time Format：HH:MM:SS:hh (12/24 hr)
- Date Format：YY-MM-DD-dd
- Interface：Parallel
- Voltage - Supply：4.5V ~ 5.5V
- Voltage - Supply, Battery：2.2V ~ 5.1V
- Current - Timekeeping (Max)：1µA @ 5V
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：28-LCC (J-Lead)
- Supplier Device Package：28-PLCC (11.51x11.51)
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Overview
The DP8570AV/NOPB is a Timer Clock Peripheral (TCP) manufactured by Texas Instruments, housed in a PLCC-28 package. It functions as a real-time clock and calendar device with a parallel bus interface. The component supports date formats of YY-MM-DD-dd and time formats of HH:MM:SS:hh in both 12-hour and 24-hour modes. It includes 32 bytes of RAM for data storage and features a backup switching mechanism for continuous operation during power loss. The device operates within a supply voltage range of 4.5 V to 5.5 V and is rated for industrial temperatures from -40°C to +85°C.
Feature Summary
- Integrated Real-Time Clock and Calendar functionality with 32-byte RAM
- Parallel bus interface for system connectivity
- Backup switching capability to maintain timekeeping during power interruptions
- Supports 12-hour and 24-hour time formats
Applications
- Industrial control systems requiring precise time synchronization
- Data logging equipment needing calendar tracking
- Embedded systems with parallel interface architectures
Procurement Notes
Verify the specific suffix 'AV' against the official datasheet to confirm temperature grade and packaging details. Ensure compatibility with parallel bus protocols used in the target design. Check for moisture sensitivity levels if the component has been exposed to ambient conditions prior to assembly.
Selection Notes
Select this component when a dedicated parallel-interface RTC is required for legacy or specific industrial architectures. Compare the 32-byte RAM capacity against application memory needs. Confirm that the 4.5V to 5.5V operating voltage aligns with the system power rails.
Part Context
The DP8570A series belongs to the Timer Clock Peripheral family from Texas Instruments. The DP8570AV/NOPB variant specifically denotes the industrial temperature range version in a PLCC-28 package without lead-based solder content, adhering to RoHS standards.
Replacement Considerations
Direct replacements may include other parts from the DP8570A family, such as the DP8570AN/NOPB, depending on the required temperature range and package type. Verify pinout and electrical specifications before substitution.
