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MPF5024AMBA0ES Datasheet(PDF) 69 Page - NXP Semiconductors |
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MPF5024AMBA0ES Datasheet(HTML) 69 Page - NXP Semiconductors |
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69 / 93 page ![]() NXP Semiconductors PF5024 Power management integrated circuit (PMIC) for high performance applications PF5024 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2020. All rights reserved. Product data sheet Rev. 1 — 15 April 2020 69 / 93 aaa-030057 System ON 30 µs Power Down Sequence Power Up Sequence Power Down Delay Regulator Outputs WD Event RESETBMCU WD OK Default OTP WD OK WD Event Hard WD Reset Behavior WD Reset Figure 30. Hard WD reset behavior After a WD reset, the PMIC may enter the Standby state depending on the status of STANDBY pin. Every time a WD event occurs, the WD_EVENT_CNT[3:0] nibble is incremented. To prevent continuous failures, if the WD_EVENT_CNT[3:0] = WD_MAX_CNT[3:0] the state machine will proceed to the fail-safe transition. The MCU is expected to clear the WD_EVENT_CNT[3:0] when it is able to do so in order to keep proper operation. Upon power up, the WD_MAX_CNT[3:0] is loaded with the values on the OTP_WD_MAX_CNT[3:0] bits. Every time the device passes through the off states, the WD_EVENT_CNT[3:0] is reset to 0x00, to ensure the counter has a fresh start after a device power down. |
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