M41T0 STMICROELECTRONICS [STMicroelectronics], M41T0 Datasheet
M41T0
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M41T0 Summary of contents
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... YEAR 2000 COMPLIANT BUS COMPATIBLE (400kHz) LOW OPERATING CURRENT OF 130µA OPERATING TEMPERATURE OF –40 TO 85°C AUTOMATIC LEAP YEAR COMPENSATION SPECIAL SOFTWARE PROGRAMMABLE OUTPUT OSCILLATOR STOP DETECTION July 2004 SERIAL REAL-TIME CLOCK Figure 1. 8-pin SOIC Packages 8 1 SO8 (M) TSSOP8 3x3 (DS) M41T0 1/20 ...
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... M41T0 TABLE OF CONTENTS FEATURES SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Figure 1. 8-pin SOIC Packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 SUMMARY DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Figure 2. Logic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Figure 3. SOIC Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Table 1. Signal Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Figure 4. Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 MAXIMUM RATING Table 2. Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 DC AND AC PARAMETERS Table 3. Operating and AC Measurement Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Figure 5. AC Testing Input/Output Waveform Table 4 ...
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... Table 9. SO8 – 8-lead Plastic Small Outline, 150 mils body width, Package Mechanical Data . . 16 Figure 14.TSSOP8 – 8-lead, Thin Shrink Small Outline, 3x3mm body size, Outline . . . . . . . . . . . 17 Table 10. TSSOP8 – 8-lead, Thin Shrink Small Outline, 3x3mm body size, Mechanical Data . . . . 17 PART NUMBERING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Table 11. Ordering Information Scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 REVISION HISTORY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Table 12. Document Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 M41T0 3/20 ...
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... AI07029 Note pin must be tied 4/20 two-line bi-directional bus. The built-in address register is incremented automatically after each WRITE or READ data byte. The M41T0 is supplied in 8 lead Plastic Small Out- line package. Table 1. Signal Names OSCI OCSO OUT OSCO SDA SDA ...
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... Figure 4. Block Diagram OSCI OSCILLATOR 32.768 kHz OSCO OUT SCL SERIAL BUS INTERFACE SDA 1 Hz SECONDS DIVIDER CENTURY/HOURS CONTROL LOGIC ADDRESS REGISTER M41T0 MINUTES DAY DATE MONTH YEAR CONTROL AI07030 5/20 ...
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... M41T0 MAXIMUM RATING Stressing the device above the rating listed in the “Absolute Maximum Ratings” table may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicat the Operating sections of this specification is Table 2 ...
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... Outputs deselected. ment Conditions listed in the relevant tables. De- signers should check that the operating conditions in their projects match the measurement condi- tions when using the quoted parameters 0.7V CC 0.3V CC AI02568 (1,2) Parameter M41T0 M41T0 Unit 2.0 to 5.5 V – °C 100 0. ...
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... DMX-26S: 1TJS125FH2A212, (SMD) quartz crystal for industrial temperature operations. KDS can be contacted at kou- hou@kdsj.co.jp or http://www.kdsj.co.jp for further information on this crystal type. 2. Load capacitors are integrated within the M41T0. Circuit board layout considerations for the 32.768kHz crystal of minimum trace lengths and isolation from RF generating signals should be taken into account. ...
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... OPERATION The M41T0 clock operates as a slave device on the serial bus. Access is obtained by implementing a start condition followed by the correct slave ad- dress (D0h). The 8 bytes contained in the device can then be accessed sequentially in the following order: 1. Seconds Register 2. Minutes Register 3. Century/Hours Register 4. Day Register 5 ...
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... M41T0 Figure 6. Serial Bus Data Transfer Sequence CLOCK DATA START CONDITION Figure 7. Acknowledgement Sequence START SCLK FROM MASTER DATA OUTPUT BY TRANSMITTER DATA OUTPUT BY RECEIVER Figure 8. Bus Timing Requirements Sequence SDA tBUF SCL P S Note STOP and S = START 10/20 DATA LINE STABLE DATA VALID ...
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... BUF Note: 1. Valid for Ambient Operating Temperature Transmitter must internally provide a hold time to bridge the undefined region (300ns max.) of the falling edge of SCL. (1) Parameter = –40 to 85° 2.0 to 5.5V (except where noted M41T0 Min Typ Max Unit 0 400 kHz 1.3 µs ...
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... M41T0 READ Mode In this mode, the master reads the M41T0 slave after setting the slave address (see lowing the WRITE Mode Control Bit (R and the Acknowledge Bit, the word address An is writ- ten to the on-chip address pointer. Next the START condition and slave address are repeated, followed by the READ Mode Control Bit (R ...
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... Figure 11. Alternate READ Mode Sequence BUS ACTIVITY: MASTER SDA LINE S BUS ACTIVITY: SLAVE ADDRESS Figure 12. WRITE Mode Sequence BUS ACTIVITY: MASTER SDA LINE S BUS ACTIVITY: SLAVE ADDRESS WORD S ADDRESS (An) SLAVE ADDRESS P DATA n DATA n+1 WORD DATA n ADDRESS (An) M41T0 DATA n DATA n+1 AI00899 DATA n+X P AI00895 DATA n+1 DATA n+X P AI00591 13/20 ...
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... The M41T0 is driven by a quartz controlled oscilla- tor with a nominal frequency of 32.768kHz. The accuracy of the Real-Time Clock depends on the frequency of the quartz crystal that is used as the time-base for the RTC. The M41T0 is tested to meet ± 35 ppm with nominal crystal. The eight- byte Clock Register (see Table 8., page ...
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... When CEB is set to '0', CB will not toggle. Data Seconds Minutes 10 Hours Hours Date Date Month Years CEB = Century Enable Bit CB = Century Bit OF = Oscillator Fail Bit Function/Range BCD Format D1 D0 Seconds Minutes Century/Hours Day Day Date Month Year X X Control M41T0 00-59 00-59 0-1/00-23 01-07 01-31 01-12 00-99 15/20 ...
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... M41T0 PACKAGE MECHANICAL INFORMATION Figure 13. SO8 – 8 lead Plastic Small Outline, 150 mils body width, Package Mechanical Drawing Note: Drawing is not to scale. Table 9. SO8 – 8-lead Plastic Small Outline, 150 mils body width, Package Mechanical Data Symb Typ A – ...
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... M41T0 c Max 0.043 0.006 0.037 0.016 0.009 0.004 0.122 – 0.203 0.122 0.030 – 6° 17/20 ...
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... M41T0 PART NUMBERING Table 11. Ordering Information Scheme Example: Device Type M41T Supply Voltage and Write Protect Voltage 2.0 to 5.5V CC Package M = SO8 (150mils width TSSOP8 Temperature Range 6 = –40 to 85°C Shipping Method blank = Tubes (Not for New Design - Use Lead-Free Package (ECO ...
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... Figure 01-Apr-03 1.2 Fix package outline and data 10-Apr-03 1.3 Revert to previous package 30-Oct-03 1.4 Remove footnote Shipping Method options updated and Note 1 removed from 30-Jun-2004 2.0 Information 23-Jul-2004 3.0 Content corrected from M41T80 to M41T0. Revision Details (Table 2., Table 14.; Table 11.) (Figure 1., Figure (Figure 1., Figure (Table 2.) Scheme. Datasheet put in new template. 11.) ...
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... M41T0 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice ...