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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MPF0900AMBA2ES датащи(PDF) 151 Page - NXP Semiconductors |
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MPF0900AMBA2ES датащи(HTML) 151 Page - NXP Semiconductors |
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151 / 205 page  NXP Semiconductors PF09 Nine-channel power management IC with advanced system safety monitoring aaa-056081 0 WD_NOK_CNT WD timer 100 % window WD timer partial window WD refresh OK WD refresh OK 1 WD refresh OK 2 WD refresh OK 3 WD refresh OK 4 WD refresh OK 5 n = WD_MAX_NOK WD refresh NOK WD refresh NOK WD refresh NOK WD refresh NOK WD refresh NOK WD refresh OK WD EVENT WD refresh NOK 0 WD timer expired WD refresh NOK 0 WD timer expired WD refresh NOK WD Timer operation WD refresh NOK WD refresh OK Figure 40. System watchdog operation The PF09 supports a development mode operation in the watchdog management functionality in order to proof and validate the watchdog functionality without generating a system reset, if system is not able to provide a valid response. The watchdog operates in development mode when the WD_NOK_MAX[2:0] bits are set to 0b000, When the WD is operating in development mode, the WD_NOK_CNT[2:0] will still count good and bad WD refresh, however, there will be no maximum count, hence no WD reset is possible. The WD_OK_CNT[2:0] bits are provided to count the number of consecutive WD_OK events. The WD_OK counter increases by 1 every time a good refresh is present, but it will clear to 0 when a bad refresh occurs. PF09 All information provided in this document is subject to legal disclaimers. © 2026 NXP B.V. All rights reserved. Product data sheet Rev. 1.3 — 16 December 2025 Document feedback 151 / 205 |
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