M48T35MH ST Microelectronics, M48T35MH Datasheet
M48T35MH
Related parts for M48T35MH
M48T35MH Summary of contents
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INTEGRATED ULTRA LOW POWER SRAM, REAL TIME CLOCK, POWER-FAIL CONTROL CIRCUIT and BATTERY BYTEWIDE™ RAM-LIKE CLOCK ACCESS BCD CODED YEAR, MONTH, DAY, DATE, HOURS, MINUTES and SECONDS FREQUENCY TEST OUTPUT for REAL TIME CLOCK AUTOMATIC POWER-FAIL CHIP DESELECT and WRITE ...
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M48T35, M48T35Y Figure 2A. DIP Connections A14 1 A12 M48T35 A2 8 M48T35Y DQ0 DQ1 12 DQ2 AI01621B Table 2. ...
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Table 3. Operating Modes Mode V CC Deselect 4.75V to 5.5V Write or Read 4.5V to 5.5V Read Deselect (min) SO PFD V Deselect SO Note Battery ...
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M48T35, M48T35Y Table 4. AC Measurement Conditions Input Rise and Fall Times Input Pulse Voltages Input and Output Timing Ref. Voltages Note that Output Hi-Z is defined as the point where data is no longer driven. The clock locations contain ...
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Table 5. Capacitance ( °C) A Symbol Parameter C Input Capacitance IN (3) Input / Output Capacitance C IO Note: 1. Effective capacitance measured with power supply at 5V. 2. Sampled only, not 100% tested. 3. ...
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M48T35, M48T35Y Table 8. Power Down/Up AC Characteristics ( °C or – °C) A Symbol before Power Down PD IH (1) V (max PFD PFD ...
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Table 9. Read Mode AC Characteristics ( °C or – ° Symbol t Read Cycle Time AVAV (1) Address Valid to Output Valid t AVQV (1) Chip Enable Low to Output Valid ...
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M48T35, M48T35Y Table 10. Write Mode AC Characteristics ( °C or – ° Symbol t Write Cycle Time AVAV t Address Valid to Write Enable Low AVWL t Address Valid to Chip ...
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Figure 7. Write Enable Controlled, Write AC Waveform A0-A14 E W DQ0-DQ7 Figure 8. Chip Enable Controlled, Write AC Waveforms A0-A14 E W DQ0-DQ7 tAVAV VALID tAVWH tAVEL tWLWH tAVWL tWLQZ tAVAV VALID tAVEH tAVEL tELEH tAVWL tDVEH M48T35, M48T35Y ...
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M48T35, M48T35Y Table 11. Register Map Address D7 D6 7FFFh 10 Years 7FFEh 0 0 7FFDh 0 0 7FFCh 0 FT 7FFBh 0 0 7FFAh 0 10 Minutes 7FF9h ST 10 Seconds 7FF8h W R Keys Sign Bit ...
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Figure 9. Clock Calibration NORMAL POSITIVE CALIBRATION NEGATIVE CALIBRATION Most clock chips compensate for crystal frequency and temperature shift error with cumbersome trim capacitors. The M48T35/35Y design, however, employs periodic counter correction. The calibra- tion circuit adds or subtracts counts ...
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M48T35, M48T35Y Figure 10. Crystal Accuracy Across Temperature Frequency (ppm –20 –40 –60 –80 –100 –120 –140 –160 –40 –30 –20 POWER SUPPLY DECOUPLING and UNDERSHOOT PROTECTION I transients, including those produced by output CC switching, can produce ...
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Table 12. Ordering Information Scheme Example: Device Type M48T Supply Voltage and Write Protect Voltage ( 4.75V to 5.5V PFD 35Y = V = 4.5V to 5.5V 4.2V to 4.5V CC PFD ...
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M48T35, M48T35Y Table 14. PCDIP28 - 28 pin Plastic DIP, battery CAPHAT, Package Mechanical Data Symb Typ Figure 12. PCDIP28 - 28 pin Plastic DIP, battery CAPHAT, ...
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Table 15. SOH28 - 28 lead Plastic Small Outline, 4-socket battery SNAPHAT, Package Mechanical Data Symb Typ 1. Figure 13. SOH28 - 28 lead Plastic Small Outline, ...
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M48T35, M48T35Y Table 16. M4T28-BR12SH SNAPHAT Housing for 48 mAh Battery & Crystal, Package Mechanical Data Symb Typ Figure 14. M4T28-BR12SH SNAPHAT Housing for 48 mAh Battery & Crystal, Package Outline ...
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Table 17. M4T28-BR12SH SNAPHAT Housing for 120 mAh Battery & Crystal, Package Mechanical Data Symb Typ Figure 15. M4T28-BR12SH SNAPHAT Housing for 120 mAh Battery & Crystal, Package Outline Drawing is ...
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M48T35, M48T35Y 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 ...