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M41T0M6E 데이터시트(PDF) 4 Page - STMicroelectronics |
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4 / 20 page M41T0 4/20 SUMMARY DESCRIPTION The M41T0 TIMEKEEPER® RAM is a low power Serial TIMEKEEPER with a built-in 32.768kHz os- cillator (external crystal controlled). Eight registers 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 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. Figure 2. Logic Diagram Figure 3. SOIC Connections Note: 1. NF pin must be tied to VSS. Table 1. Signal Names Note: 1. NF pin must be tied to VSS. AI07028 OSCI VCC M41T0 VSS SCL OSCO SDA OUT 1 SDA VSS SCL OUT OSCO OSCI VCC NF (1) AI07029 M41T0 2 3 4 8 7 6 5 OSCI Oscillator Input OCSO Oscillator Output OUT Output Driver (Open Drain) SDA Serial Data Address Input / Output SCL Serial Clock NF(1) No Function VCC Supply Voltage VSS Ground |
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