Circuits & Schematics: pic - 2

11. Use the MCLR Pin as an Output with PIC Microcontrollers
    Antonio Muñoz Pilar Molina
    Circuits Microcontrollers Usage Microchip PIC10F222 2N7002
    .. the MCLR pin either as an external reset or as an input-only pin. Figure 1. Adding a MOSFET and associated circuitry to a PIC microcontroller’s MCLR input pin transforms the pin into an output. This design uses one pin for analog input ...
    Mar 2, 2022

12. Single-wire keypad interface frees microcontroller-I/O pins
    Israel Schleicher
    Circuits Microcontrollers Usage Texas Instruments LMC555 LMC7211-N
    In most keypads, pressing a key closes a contact that bridges two lines in an xy matrix. If you use a microcontroller to detect a key closure, checking the states of (x+y) lines requires an equal number of I/O pins. Occupying only one free I/O pin, ...
    Jan 19, 2022
13. A simple and fully automatic, 12V uninterruptible power supply system for small/medium power appliances
    Circuits Supply Microchip PIC16F688
    Motivation This is a simple and fully automatic, 12 V uninterruptible power supply system for small/medium power appliances (Figure 1). This power supply specifically designs to drive routers and modems to provide uninterrupted internet and ...
    Jul 22, 2021
14. Analog-input circuit serves any microcontroller
    Steve Hageman
    Circuits Analogue Design Microcontrollers Usage Panasonic XN02401 XN04601
    The simple ADC in Figure 1 is perfect for getting analog signals into a purely digital microcontroller. Using just five surface-mount parts, you can assemble it for less than 50 cents (1000), which is approximately half the cost of a ...
    Jun 10, 2021
15. Microcontroller controls analog phase shifter
    Nick Ierfino
    Circuits Microcontrollers Usage Analog Devices AD5227
    Phase shifters find use in a variety of circuits, but variation in amplifier and capacitance tolerances usually makes it difficult to control the exact phase shift that precise control circuitry requires. The circuit in Figure 1 can control the ...
    Oct 21, 2020
16. A circuit to use PIC peripheral outputs simultaneously
    Circuits Interfaces Microcontrollers Usage ON Semiconductor 2N7000 BSS138
    .. Bhattacharjee EDN In PIC microcontrollers, the MSSP (master synchronous serial port) module uses multiplexed pins for the I 2 C and SPI ...
    May 20, 2019
17. Program a PIC Processor In-Circuit Using a 3.3-V Supply
    Circuits Supply Microcontrollers Usage Infineon IRLML6402
    .. Conrad Electronic Design In this Idea for Design, placing this circuit setup between the battery V DD bus and the PIC microcontroller allows you to execute in-circuit programming while protecting the application circuit. Many PIC ...
    Mar 6, 2019
18. Stand-alone Inductance Meter on PIC16F1936
    Circuits Measurement Microchip PIC16F1936 Atmega328
    .. Meter on PIC16F1936. So this version is battery powered and comes complete with a 3D-printed case. It uses a mid-range PIC microcontroller, a Microchip PIC16F1936 (Figure 2). Not that there’s much special about this model, I just ...
    Aug 21, 2018
19. Quartz crystal-based remote thermometer features direct Celsius readout
    Jim Williams Mark Thoren
    Circuits Measurement Microchip PIC16F73
    Although quartz crystals have served as temperature sensors, designers haven't taken advantage of the technology because few manufacturers offer the sensors as standard products (references 1 and 2 ). In contrast to conventional resistance- or ...
    Jun 14, 2018
20. RC lowpass filter expands microcomputer's output port
    Rex Niven
    Circuits Microcontrollers Usage
    .. The routine uses bitwise manipulation of output My_Bit of port My_Port . Listing 1. Whip-routine output function for PIC microcontroller Whip MOVWF My_Data ; the data to transmit is in W {регистр W} MOVLW 8 MOVWF Bit_Counter ; set up ...
    Mar 19, 2018

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