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BQ4845 Datasheet(PDF) 2 Page - Texas Instruments |
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BQ4845 Datasheet(HTML) 2 Page - Texas Instruments |
2 / 22 page Functional Description Figure 1 is a block diagram of the bq4845. The follow- ing sections describe the bq4845 functional operation including clock interface, data-retention modes, power-on reset timing, watchdog timer activation, and interrupt generation. 2 Figure 1. Block Diagram VCC CS OE WE CEOUT VOUT Mode DQ Power <VCC (max.) VIH XX CEIN VOUT1 Deselect High Z Standby VIL XVIL CEIN VOUT1 Write DIN Active >VCC (min.) VIL VIL VIH CEIN VOUT1 Read DOUT Active VIL VIH VIH CEIN VOUT1 Read High Z Active <VPFD (min.) > VSO XXX VOH VOUT1 Deselect High Z CMOS standby ≤ VSO XXX VOHB VOUT2 Deselect High Z Battery-backup mode Truth Table Aug. 1995 bq4845/bq4845Y |
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