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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LPC2921 датащи(PDF) 48 Page - NXP Semiconductors |
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LPC2921 датащи(HTML) 48 Page - NXP Semiconductors |
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48 / 84 page  LPC2921_23_25_3 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 03 — 14 April 2010 48 of 84 NXP Semiconductors LPC2921/2923/2925 ARM9 microcontroller with CAN, LIN, and USB • Register write-protection mechanism to prevent unintentional resets 6.15.4.1 Functional description Each reset output is defined as a combination of reset input sources including the external reset input pins and internal power-on reset, see Table 27. The first five resets listed in this table form a sort of cascade to provide the multiple levels of impact that a reset may have. The combined input sources are logically OR-ed together so that activating any of the listed reset sources causes the output to go active. 6.15.4.2 Pin description The RGU module in the LPC2921/2923/2925 has the following pins. Table 28 shows the RGU pins. Table 27. Reset output configuration Reset output Reset source Parts of the device reset when activated POR_RST power-on reset module LP_OSC; source for RGU_RST RGU_RST POR_RST, RST_N pin RGU internal; source for PCR_RST PCR_RST RGU_RST, WATCHDOG PCR internal; source for COLD_RST COLD_RST PCR_RST parts with COLD_RST as reset source below WARM_RST COLD_RST parts with WARM_RST as reset source below SCU_RST COLD_RST SCU CFID_RST COLD_RST CFID FMC_RST COLD_RST embedded Flash Memory Controller (FMC) EMC_RST COLD_RST embedded SRAM-Memory Controller GESS_A2V_RST WARM_RST GeSS AHB-to-APB bridge PESS_A2V_RST WARM_RST PeSS AHB-to-APB bridge GPIO_RST WARM_RST all GPIO modules UART_RST WARM_RST all UART modules TMR_RST WARM_RST all timer modules in PeSS SPI_RST WARM_RST all SPI modules IVNSS_A2V_RST WARM_RST IVNSS AHB-to-APB bridge IVNSS_CAN_RST WARM_RST all CAN modules including Acceptance filter IVNSS_LIN_RST WARM_RST all LIN modules MSCSS_A2V_RST WARM_RST MSCSS AHB to APB bridge MSCSS_PWM_RST WARM_RST all PWM modules MSCSS_ADC_RST WARM_RST all ADC modules MSCSS_TMR_RST WARM_RST all timer modules in MSCSS I2C_RST WARM_RST all I2C modules QEI_RST WARM_RST Quadrature encoder DMA_RST WARM_RST DMA controller USB_RST WARM_RST USB controller VIC_RST WARM_RST Vectored Interrupt Controller (VIC) AHB_RST WARM_RST CPU and AHB Bus infrastructure |
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