AB08XX Datasheet, PDF (1/12 Pages) Abracon Corporation – The Abracon Corporation AB08XX Real Time Clock family provides a groundbreaking combination of ultra-low power coupled with a highly sophisticated feature set.

Date of Issue: Sept. 10^th, 2012
Page (1) of (12)
AB08XX Series
Real Time Clock Module
3.0 x 3.0 mm
Abracon Drawing #
ESD Sensitive
Revision #: Initial Release
AB08XX Features
 Sub-threshold Power Optimized Technology by Ambiq
Micro
 Ultra-low supply current:
- <15 nA with RC oscillator
- <20 nA with RC oscillator and autocalibration
- <55 nA with crystal oscillator
 Baseline timekeeping features:
- 32 KHz crystal oscillator with integrated load
capacitor/resistor
- Counters for hundredths, seconds, minutes, hours, date,
month, year, century, and weekday
- Alarm capability on all counters
- Programmable output clock generation (32 kHz to
1/year)
- Countdown timer with repeat function
- Automatic leap year calculation
 Advanced timekeeping features:
- Integrated power optimized RC oscillator
- Advanced crystal calibration to ± 2 ppm
- Advanced RC calibration to ± 16 ppm
- Automatic calibration of RC oscillator to crystal
oscillator
- Watchdog timer with hardware reset
- Up to 256 bytes of general purpose RAM
 Power management features:
- Automatic switchover to VBAT
- External interrupt monitor
- Programmable brown out detection
- Programmable analog voltage comparator
 I²C (up to 400 kHz) or SPI (up to 2 MHz) serial interface
- Supports 3-wire and 4-wire SPI
Applications
 Smart cards
 Wireless sensors and tags
 Medical electronics
 Utility meters
 Data loggers
 Appliances
 Handsets
 Consumer electronics
 Communications devices
Description
The Abracon Corporation AB08XX Real Time Clock family
provides a groundbreaking combination of ultra-low power
coupled with a highly sophisticated feature set. With power
requirements significantly lower than any other industry RTC
(as low as 15nA), these are the first semiconductor products
based on Abracon Corporation’s innovative SPOT (Sub-
threshold Power Optimized Technology by Ambiq Micro)
CMOS platform. The AB08XX includes on-chip oscillators to
provide minimum power consumption, full RTC functions
including battery backup and programmable counters and
alarms for timer and watchdog functions, and either an I²C or
SPI serial interface for communication with a host controller.
 Operating Voltage 1.7-3.6 V
 Clock and RAM retention voltage 1.5-3.6 V
 Operating temperature –40 to 85 °C
 All inputs are Schmitt trigger
 3 mm x 3 mm QFN-16 package