AB08XX Series
Real Time Clock Module
Date of Issue: Sept. 10
th
, 2012
Page (1) of (12)
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
I
2
C (up to 400 kHz) or SPI (up to 2 MHz) serial interface
-
Supports 3-wire and 4-wire SPI
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
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 I
2
C or
SPI serial interface for communication with a host controller.
ABRACON [ ABRACON CORPORATION ]
