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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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K32L2AX датащи(PDF) 87 Page - NXP Semiconductors |
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K32L2AX датащи(HTML) 87 Page - NXP Semiconductors |
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87 / 96 page  PTB0, PTB1, PTC3, PTC4, PTD4, PTD5, PTD6 and PTD7 I/O have both high drive and normal drive capability selected by the associated PTx_PCRn[DSE] control bit. All other GPIOs are normal drive only. When in high drive mode, the sink/source current for a high drive pin can reach 20 mA. However, the total current flowing into the MCU VDD must not exceed maximum limit of IDD. • Fast pins PTE20, PTE21, PTE22, PTE23, PTD4, PTD5, PTD6, PTD7 can support fast slew rate of 0.5 ns and are used for high speed communications. It is set/cleared by PTx_PCRn[SRE]. • Default I/O state Most of digital pins are disabled (in high impedance state) after power up, so a pull-up/down is needed to a determined level for some applications. Please refer to the Signal Multiplexing and Pin Assignments chapter to know the default IO state for a dedicate pin. • RESET_b pin The RESET_b pin is an open-drain I/O pin that has an internal pullup resistor. An external RC circuit is recommended to filter noise as shown in the following figure. The resistor value must be in the range of 4.7 kΩ to 10 kΩ; the recommended capacitance value is 0.1 μF. The RESET_b pin also has a selectable digital filter to reject spurious noise. 5 5 4 4 3 3 2 2 1 1 D D C C B B A A EXTAL XTAL OSCILLATOR EXTAL XTAL OSCILLATOR EXTAL XTAL OSCILLATOR EXTAL XTAL OSCILLATOR EXTAL XTAL OSCILLATOR EXTAL XTAL OSCILLATOR MCU ADCx MCU ADCx MCU RESET_b MCU NMI_b MCU RESET_b Supervisor Chip OUT Active high, open drain RESET_b SWD_DIO SWD_CLK Analog input High voltage input RESET_b VDD VDD VDD VDD VDD VDD Drawing Title: Size Document Number Rev Date: Sheet of Page Title: ICAP Classification: FCP: FIUO: PUBI: SCH-XXXXX PDF: SPF-XXXXX X <Title> C Friday, February 06, 2015 <PageTitle> 1 1 ___ ___ X Drawing Title: Size Document Number Rev Date: Sheet of Page Title: ICAP Classification: FCP: FIUO: PUBI: SCH-XXXXX PDF: SPF-XXXXX X <Title> C Friday, February 06, 2015 <PageTitle> 1 1 ___ ___ X Drawing Title: Size Document Number Rev Date: Sheet of Page Title: ICAP Classification: FCP: FIUO: PUBI: SCH-XXXXX PDF: SPF-XXXXX X <Title> C Friday, February 06, 2015 <PageTitle> 1 1 ___ ___ X R 1 2 0.1uF R5 1 2 Cx 0.1uF RESONATOR 1 3 Cy Cx CRYSTAL 2 1 J1 HDR_5X2 1 2 3 4 6 5 7 8 9 10 Cy 10k 10k R4 CRYSTAL 2 1 0.1uF 10k CRYSTAL 2 1 R1 1 2 R3 1 2 C RESONATOR 1 3 R2 1 2 10k 10k RF 1 2 RS BAT54SW 1 2 RS RS C RF 1 2 RS 1 2 RF 1 2 CRYSTAL 2 1 Figure 28. Reset circuit Design considerations K32 L2A Microcontroller with 512 KB Flash and 128 KB SRAM, Rev. 3, 02/2021 87 NXP Semiconductors |
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