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M41T256Y

ST Microelectronics
Part Number M41T256Y
Manufacturer ST Microelectronics
Description 256 Kbit 32K x8 SERIAL RTC
Published Apr 29, 2005
Detailed Description www.DataSheet4U.com M41T256Y 256 Kbit (32K x8) Serial RTC FEATURES SUMMARY ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ 5V OPERATI...
Datasheet PDF File M41T256Y PDF File

M41T256Y
M41T256Y

Overview
www.
DataSheet4U.
com 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 TIMESTAMP 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 44 1 SO44 (MT) Figure 2.
44-pin SOIC Package SNAPHAT (SH) Crystal/Battery 44 1 SOH44 (MH) June 2004 1/27 M41T256Y TABLE OF CONTENTS FEATURES SUMMARY .
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1 Figure 1.
44-pin, Hatless SOIC Package .
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1 Figure 2.
44-pin SOIC Package .
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1 SUMMARY DESCRIPTION .
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4 Figure 3.
Table 1.
Figure 4.
Figure 5.
Figure 6.
Logic Diagram .
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4 Signal Names .
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4 44-pin SOIC Connections (MT) .
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