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M41T256YMT7F Arkusz danych(PDF) 1 Page - STMicroelectronics

Numer części M41T256YMT7F
Szczegółowy opis  256 Kbit 32K x8 SERIAL RTC
Download  27 Pages
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Producent  STMICROELECTRONICS [STMicroelectronics]
Strona internetowa  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

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June 2004
M41T256Y
256 Kbit (32K x8) Serial RTC
FEATURES SUMMARY
5V OPERATING VOLTAGE
SERIAL INTERFACE SUPPORTS
EXTENDED I2C BUS ADDRESSING
(400kHz)
AUTOMATIC SWITCH-OVER AND
DESELECT CIRCUITRY
POWER-FAIL DESELECT VOLTAGES:
M41T256Y: VCC = 4.5 to 5.5V;
VPFD = 4.2 < VPFD < 4.5V
COUNTERS FOR TENTHS/HUNDREDTHS
OF SECONDS, SECONDS, MINUTES,
HOURS, DAY, DATE, MONTH, and YEAR
PROGRAMMABLE SOFTWARE CLOCK
CALIBRATION
32,752 BYTES OF GENERAL PURPOSE
RAM
MICROPROCESSOR POWER-ON RESET
HOLDS MICROPROCESSOR IN RESET
UNTIL SUPPLY VOLTAGE REACHES
STABLE OPERATING LEVEL
AUTOMATIC ADDRESS-INCREMENTING
TAMPER INDICATION CIRCUIT WITH TIME-
STAMP
SLEEP MODE FUNCTION
PACKAGING INCLUDES A 44-LEAD SOIC
AND SNAPHAT® TOP (to be ordered
separately)
SOIC PACKAGE PROVIDES DIRECT
CONNECTION FOR A SNAPHAT® TOP
WHICH CONTAINS THE BATTERY AND
CRYSTAL
Figure 1. 44-pin, Hatless SOIC Package
Figure 2. 44-pin SOIC Package
44
1
SO44 (MT)
44
1
SOH44 (MH)
SNAPHAT (SH)
Crystal/Battery


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