Microchip PIC18F26Q84-I/SS

The PIC18-Q84 family expands the 8-bit MCUs by combining an extensive array of Core Independent Peripherals (CIPs) with Controller Area Network Flexible Data Rate (CAN FD). These cost optimized MCUs contain time-saving CIPs in up to 48-pins with up to 128 KB of flash memory. The family introduces new features and peripherals like the Universal Timer (UTMR) with customization capability; context switching added to the 12-bit ADC with Computation for automating analog signal analysis for real-time system response. Additionally, it includes industry standard options, JTAG Boundary Scan, 32-bit Cyclic Redundancy Check (CRC) with memory scan on boot for added system safety. System designers can benefit greatly by saving time, as it is significantly easier to configure a hardware-based peripheral, as opposed to writing and validating an entire software routine, to accomplish a task. 

Functional Safety:

This product is suitable for safety-critical applications targeting automotive (IEC 60730), industrial (ISO26262) and automotive products (IEC 61508) products. Various important collateral and tools are available to aid developers of safety applications – refer to the Product Features below for a list of device specific safety collaterals. TÜV SÜD certified MPLABX development tools are also available for this product. Contact your local Microchip sales office or your distributor for more information.

CAN Flexible Data-Rate (FD) module:
• Functional in CAN FD or CAN 2.0B modes

Eight Direct Memory Access (DMA) Controllers:
• Data transfers capabilities
• User programmable source and destination sizes
• Hardware and software triggered data transfers

Vectored Interrupt Capability:
• Selectable high/low priority
• Fixed interrupt latency of three instruction cycles
• Programmable vector table base address
• Backwards compatible with previous interrupt capabilities

Analog-to-Digital Converter with Computation and Context Switching (ADC):
• Automated math functions on input signals:
• Averaging, filter calculations, oversampling and threshold comparison
• 4 Separate Contexts (settings and results) saved and accessible separately
• Contexts can be accessed through firmware or DMA
• Five internal analog channels
• Hardware Capacitive Voltage Divider (CVD) Support:
• Adjustable sample and hold capacitor array
• Automates touch sampling and reduces software size and CPU usage when touch or proximity

Universal Timer (UTMR)
• Two Customizable 16-bit Timers​ - Combine to create larger bit timer

8-Bit Digital-to-Analog Converter (DAC):

Two Comparators (CMP):

Four 16-Bit Pulse-Width Modulators (PWM):

Data Signal Modulator (DSM):

Programmable CRC with Memory Scan:
• Reliable data/program memory monitoring for Fail-Safe operation (e.g., Class B)
• Calculate 32-bit CRC over any portion of Program Flash Memory

Communication:

Five UART modules:
• LIN master and slave, DMX mode, DALI gear and device protocols
• SPI / I2C

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):
• Ability to selectively disable hardware module to minimize active power consumption of unused peripherals

JTAG: Supports boundary scan

Functional Safety
• IEC 60730 Class B library (UL certified)
• ISO 26262 FMEDA (ASIL B Ready certified by SGS TÜV)
• ISO 26262 Safety Manual (ASIL B Ready certified by SGS TÜV)
• ISO 26262 software diagnostics (certification pending)
• IEC 61508 FMEDA
• IEC 61508 Safety Manual (ultimo 2021)
• MPLAB XC8 Functional Safety Pro compiler