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M41T00SM6E Arkusz danych(PDF) 4 Page - STMicroelectronics |
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M41T00SM6E Arkusz danych(HTML) 4 Page - STMicroelectronics |
4 / 23 page M41T00S 4/23 SUMMARY DESCRIPTION The M41T00S Serial Access TIMEKEEPER® SRAM is a low power Serial RTC with a built-in 32.768kHz oscillator (external crystal controlled). Eight bytes of the SRAM (see Table 2., page 11) are used for the clock/calendar function and are configured in binary coded decimal (BCD) format. Addresses and data are transferred serially via a two line, bi-directional I2C interface. The built-in address register is incremented automatically af- ter each WRITE or READ data byte. The M41T00S has a built-in power sense circuit which detects power failures and automatically switches to the battery supply when a power fail- ure occurs. The energy needed to sustain the clock operations can be supplied by a small lithium button supply when a power failure occurs. The eight clock address locations contain the century, year, month, date, day, hour, minute, and second in 24 hour BCD format. Corrections for 28, 29 (leap year - valid until year 2100), 30 and 31 day months are made automatically. The M41T00S is supplied in an 8-pin SOIC. Figure 2. Logic Diagram Note: 1. For SO8 package only. Table 1. Signal Names Note: 1. For SO8 package only. Figure 3. 8-pin SOIC (M) Connections Note: 1. Open Drain Output SCL VCC M41T00S VSS SDA FT/OUT VBAT XI (1) XO (1) AI09165 XI(1) Oscillator Input XO(1) Oscillator Output FT/OUT Frequency Test / Output Driver (Open Drain) SDA Serial Data Input/Output SCL Serial Clock Input VBAT Battery Supply Voltage VCC Supply Voltage VSS Ground 2 3 45 6 8 7 1 FT/OUT (1) SDA VBAT SCL VSS XO XI VCC M41T00S AI09166 |
Podobny numer części - M41T00SM6E |
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Podobny opis - M41T00SM6E |
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