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R2023K Datasheet(PDF) 43 Page - RICOH electronics devices division |
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R2023K Datasheet(HTML) 43 Page - RICOH electronics devices division |
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43 / 50 page  R2023K/T 43 Typical Applications • Typical Power Circuit Configurations Sample circuit configuration 1 R1163xxx1B is a series regulator with the reverse current protection circuit. The CE pin should be pull-up to system power supply voltage, and ECO pin should be connect to system power supply or VSS. Please select VOUT voltage equal to the CPU power supply voltage that interfaces to R2023K/T and SRAM. VDD VSS System Power Supply R1163xxx1B VOUT VDD CE VSS ECO SRAM etc. Primary Battery Sample circuit configuration 2 OSCIN OSCOUT VSS 32768Hz System power supply VDD Primary Battery OSCIN OSCOUT VSS 32768Hz System power supply VDD Secondary Battery *1) Install bypass capacitors for high-frequency and low-frequency applications in parallel in close vicinity to the R2023K/T. |
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