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Microchip Technology PIC18F26/45/46/55/56Q24 Microcontrollers

Microchip Technology PIC18F26/45/46/55/56Q24 Microcontrollers are part of the PIC18-Q24 microcontroller family of 28/40/44/48-pin devices for sensor-interfacing, real-time control, and communication applications. The MCUs offer up to 32KB of memory, 4KB of Data SRAM, and 512B of EEPROM. The devices have 24, 35, or 43 I/O pins, including 4 or 12 MVIO pins powered by VDDIO2.

The Microchip PIC18F24/25Q24 Microcontrollers also feature a vectored interrupt controller with fixed latency for handling interrupts, system bus arbiter, Direct Memory Access (DMA) capabilities, Universal Asynchronous Receiver-Transmitter (UART) with support for asynchronous, DMX-512, Digital Addressable Lighting Interface (DALI®) and Local Interconnect Network (LIN) protocols; Serial Peripheral Interface (SPI), and I2C. Furthermore, the family includes memory features such as Memory Access Partition (MAP) and the Device Information Area (DIA), which stores factory calibration values to help improve temperature sensor accuracy.

Features

  • Multi-Voltage I/O (MVIO):
    • MVIO-powered pins support operation from 1.62V to 5.5V
    • This domain is independent of the main VDD voltage level
    • Voltage monitoring on the additional voltage domain with programmable trip points
  • Programming and Debugging Interface Disable (PDID), the ICSP interface can be disabled to prevent external memory access or modifications
  • Vectored Interrupt (VI) capability – faster interrupt response time
    • Selectable high/low priority
    • Programmable vector table base address
    • Fixed interrupt latency of 3x instruction cycles
    • Backward compatible with previous interrupt capabilities
  • Memory Access Partition (MAP): the Program Flash Memory can be partitioned into:
    • Application block
    • Boot block
    • Storage Area Flash (SAF) block with SAFLOCK to prevent modifications
  • Programming/debugging features:
    • Programming and Debugging Interface Disable (PDID)
    • In-Circuit Serial Programming™ (ICSP™) via 2x pins
    • In-Circuit Debug (ICD) with 3x breakpoints via 2x pins
    • Debug integrated on-chip
  • 4x Direct Memory Access (DMA) controller Analog-to-Digital Converter with Computation (ADCC):
    • 10-bit ADC with computation with up to 300ksps
    • Up to 30x external channels
    • Automated math functions on input signals such as averaging, filter calculations, oversampling, and threshold comparison
    • Operates in Sleep
    • 5x internal analog channels
    • Hardware Capacitive Voltage Divider (CVD) Support, automates touch sampling and reduces software size / CPU usage
  • 8-Bit Digital-to-Analog Converter (DAC):
    • Buffered output available on 2x I/O pins
    • Internal connections to ADC and Comparators
  • 2x High-Speed Comparators (CMP):
    • Configurable power vs speed modes
    • Configurable output polarity
    • External output via Peripheral Pin Select
  • 2x Zero-Cross Detect (ZCD), detects when the AC signal on the pin crosses ground
  • Voltage Reference:
    • Fixed voltage reference with 1.024V, 2.048V, and 4.096V output levels
    • Internal connections to ADC, Comparator, and DAC
  • 3x 16-bit dual PWMs provide 6x PWM outputs UART with hardware support for LIN/DMX
    • DMA compatible
    • Asynchronous UART, RS-232, and RS-485 compatible
    • Programmable 1, 1.5, and 2 stop bits
  • 2x SPI modules:
    • Configurable length bytes
    • Arbitrary length data packets
    • Transmit-without-Receive and Receive-without-transmit option
    • Transfer byte counter
    • Separate transmit and receive buffers with 2-byte FIFO and DMA capabilities
  • 2x I2C modules, SMBus, PMBus™ compatible:
    • 7-bit and 10-bit addressing modes with address masking modes
    • Dedicated address, transmit / receive buffers, and DMA capabilities
    • I2C, SMBus 2.0 / 3.0, and 1.8V input level selections
    • Multi-Master mode, including self-addressing
  • Device Information Area (DIA) stores:
    • Temperature indicator factory calibrated data
    • Fixed voltage reference measurement data
    • Microchip unique identifier
  • Low power mode:
    • Sleep: < 1μA typical at 3V
    • Doze: CPU and Peripherals running at different cycle rates (typically, CPU is lower)
    • Idle: CPU halted while peripherals operate
    • Sleep: Lowest power consumption
  • Peripheral Module Disable (PMD), selectively disable the hardware module to minimize active power consumption of unused peripherals
  • Device I/O port features:
    • 24x I/O pins including 4x MVIO pins powered by VDDIO2 (PIC18F24/25/26Q24)
    • 35x I/O pins including 12x MVIO pins powered by VDDIO2 (PIC18F45/46Q24)
    • 43x I/O pins including 12x MVIO pins powered by VDDIO2 (PIC18F55/56Q24)
    • MVIO pins support a voltage range of 1.62V through 5.5V
    • Individually programmable I/O direction, open-drain, slew rate, and weak pull-up control
    • Low-voltage interface on all I/O pins using LV-TTL input buffer
    • Interrupt-on-change on most pins
    • 3x programmable external interrupt pins

Applications

  • Sensor-interfacing
  • Real-time control
  • Communication

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Microchip Technology PIC18F26/45/46/55/56Q24 Microcontrollers