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ML2500B Fiches technique(PDF) 9 Page - OKI electronic componets |
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ML2500B Fiches technique(HTML) 9 Page - OKI electronic componets |
9 / 27 page FEDL2500BFULL-02 OKI Semiconductor ML2500BTA 9/27 Operational Timing at Power-On To initialize the internal serial interface circuit of ML2500B after power-on, you must input “L” pulse to the RESET pin at the timing shown below. After this “L” pulse input, the ML2500B enters into standby state (Command-wait state). Timing for inputting RESET pulse at Power-on Timing for Power Up and Power Down Operations ML2500B stops its oscillation circuit to shift to power-down state either by using the PDWN command or by inputting Low level to the RESET pin. In power-down state, the ML2500B turns into low power consumption mode. Two options are available to power up the LSI again after power down by the PDWN command: 1. Input “L” pulse to the RESET pin, or 2. Input Low level to the CS pin. The following charts show timings for power up and power down operations. Timing for power-down operation by using the PDWN command tRST tPWUP 1 µs 1 ms Powering Up Resetting Standby (Command-wait) 2.7 V VDD RESET(I) Status Power Down CS PDWN command input tPDWN 100 µs Status Powering Up Power Down Command-wait Command-wait tCSWL 1 µs tRST 1 µs 1 ms tPWUP Power up with RESET pin Power up with CS pin PDWN command input CS(I) RESET(I) |
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