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M41T83RMY6E Datasheet(PDF) 1 Page - STMicroelectronics

Part # M41T83RMY6E
Description  Serial I2C bus RTC with battery switchover
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M41T83RMY6E Datasheet(HTML) 1 Page - STMicroelectronics

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October 2010
Doc ID 12578 Rev 12
1/61
1
M41T82
M41T83
Serial I2C bus RTC with battery switchover
Features
Ultra-low battery supply current of 365 nA
Factory calibrated accuracy
±5 ppm
guaranteed after 2 reflows (SOX18)
– Much better accuracies achievable using
built-in programmable analog and digital
calibration circuits
2.0 V to 5.5 V clock operating voltage
Counters for tenths/hundredths of seconds,
seconds, minutes, hours, day, date, month,
year, and century
Automatic switchover and reset output circuitry
(fixed reference)
–M41T83S
VCC = 3.00 V to 5.50 V
(2.85 V
≤ VRST ≤ 3.00 V)
–M41T83R
VCC = 2.70 V to 5.50 V
(2.55 V
≤ VRST ≤ 2.70 V)
–M41T83Z
VCC = 2.38 V to 5.50 V
(2.25 V
≤ VRST ≤ 2.38 V)
Serial interface supports I2C bus (400 kHz
protocol)
Programmable alarm with interrupt function
(valid even during battery backup mode)
Optional 2nd programmable alarm available
Square wave output defaults to 32 KHz on
power-up (M41T83 only)
RESET (RST) output
Watchdog timer
Programmable 8-bit counter/timer
7 bytes of battery-backed user SRAM
Battery low flag
Power-down time stamp (HT bit)
Low operating current of 80 µA
Oscillator stop detection
Battery or SuperCap™ backup
Operating temperature of –40 °C to 85 °C
Package options include:
– a 16-lead QFN (M41T83),
– an 18-lead embedded crystal SOIC
(M41T83), or
– an 8-lead SOIC (M41T82)
RoHS compliance: lead-free components are
compliant with the RoHS directive
SOX18 (18-pin, 300 mil SOIC
QFN16, 4 mm x 4 mm (QA)
SO8 (M)
with embedded crystal) (MY)
(VFQFPN16)
1
18
www.st.com


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