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Product Detailed Parameters
- Description：IC RTC CLK/CALENDAR SPI 16QFN
- Series：-
- Package：Tape & Reel (TR),Cut Tape (CT)
- Mfr：Abracon LLC
- Type：Clock/Calendar
- Features：Alarm, Leap Year, SRAM, Trickle-Charger
- Memory Size：64B
- Time Format：HH:MM:SS:hh
- Date Format：YY-MM-DD-dd
- Interface：SPI
- Voltage - Supply：1.7V ~ 3.6V
- Voltage - Supply, Battery：1.5V ~ 3.6V
- Current - Timekeeping (Max)：0.17µA ~ 0.22µA @ 1.8V ~ 3V
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
- Package / Case：16-VFQFN Exposed Pad
- Supplier Device Package：16-QFN (3x3)
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Overview
The Abracon AB0813-T3 is a Real Time Clock (RTC) integrated circuit designed for precise timekeeping and calendar functions. It features an SPI interface and is housed in a 16-VFQFN Exposed Pad package with dimensions of 3x3 mm. The device operates on a supply voltage range of 1.7V to 3.6V, supporting battery backup from 1.5V to 3.6V. Key specifications include a 64-byte SRAM memory size, current consumption of 0.17µA to 0.22µA during timekeeping at 1.8V to 3V, and an operating temperature range of -40°C to 85°C. Integrated features encompass alarms, leap year compensation, and a trickle charger.
Feature Summary
- Integrated 64-byte SRAM for data storage
- SPI serial interface for communication
- Low power consumption: 0.17µA ~ 0.22µA @ 1.8V ~ 3V
- Built-in alarm and leap year compensation
Applications
- Portable electronic devices requiring accurate timekeeping
- Industrial systems needing extended temperature operation (-40°C to 85°C)
- Battery-powered equipment utilizing the trickle-charger feature
Procurement Notes
Verify the specific package variant (Tape & Reel or Cut Tape) against project requirements. Confirm that the SPI interface compatibility matches the host controller. Ensure voltage levels align with the 1.7V to 3.6V supply specification. Check for any specific ordering suffixes required by the manufacturer.
Selection Notes
Select this component when an SPI interface is preferred over I2C. Consider the 64-byte SRAM capacity for application data needs. The 16-QFN (3x3) package is suitable for space-constrained surface mount designs. Verify that the low standby current meets the system's power budget constraints.
Part Context
This part belongs to the Abracon Real Time Clock family. It shares functional similarities with other RTCs but is distinguished by its SPI interface and specific package type. It serves as a timing solution for embedded systems requiring calendar and clock functionality with non-volatile memory capabilities.
Replacement Considerations
Check for pin-to-pin compatible alternatives with SPI interfaces. Verify if other Abracon models offer similar voltage ranges and memory sizes. Ensure that any substitute supports the same operating temperature range and package dimensions.
