M41TC8025 Datasheet, PDF (1/8 Pages) STMicroelectronics – Highly accurate, temperature-compensated serial real-time clock (RTC) with embedded crystal

M41TC8025
Highly accurate, temperature-compensated
serial real-time clock (RTC) with embedded crystal
Data brief
Features
■ Embedded high-stability 32 KHz DTCXO
■ Temperature-compensated serial real-time
clock
– ±5.0 ppm max from -40 to 85 °C
– ±3.8 ppm max from 0 to 50 °C
■ Supply voltage
– Clock operating & timekeeping: 1.6 to 5.5 V
– I²C interface operating: 1.8 to 5.5 V
– Temperature compensation: 2.2 to 5.5 V
■ 0.8 µA typical current at 3.0 V supply voltage
■ 400 kHz I²C interface
■ Time-of-day alarm (with interrupt)
■ Fixed-cycle timer interrupt function
■ Time update interrupt function
■ Programmable frequency output
– FOUT = 1 Hz, 1 KHz and 32 KHz
■ Registers for seconds, minutes, hours, day-of-
week, date (day of month), month and year
with automatic leap year compensation
■ Programmable temperature compensation
intervals (0.5 s, 2 s default, 10 s, 30 s)
Applications
■ Power meters
■ Industrial applications
SO14
14-pin SOIC
Description
The M41TC8025 is a serial I²C real-time clock
(RTC) incorporating temperature compensation to
maintain accurate timekeeping over the industrial
temperature range of -40 to +85 °C. In addition to
providing date and time (seconds, minutes, hours,
day-of-week, date (day of month), month and
year), the device also provides an alarm function,
fixed-cycle timer, time update interrupt and
programmable frequency outputs (1 Hz, 1 KHz
and 32 KHz).
The M41TC8025 is provided in a 200 mil, 14-pin
SOIC package.
Table 1. Device summary
Order code
M41TC8025AMC6F
Accuracy
±5.0 ppm (-40 to 85 °C)
±3.8 ppm (0 to 50 °C)
Package
SO14
September 2012
Doc ID 023561 Rev 2
For further information contact your local STMicroelectronics sales office.
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