PIC16F1823T-E/SL

The PIC16F1823T-E/SL from Microchip is a member of the Enhanced Mid-Range PIC16 family, offering significantly improved performance and features compared to the classic PIC16F devices. The enhanced core operates at up to 32MHz with a deeper hardware stack (16 levels vs. 8) and more instructions, providing approximately 2x the performance of classic mid-range PIC devices. The key differentiators of this device are the advanced digital peripherals: four Configurable Logic Cells (CLC) that implement combinational and sequential logic functions in hardware without CPU intervention, and two Complementary Waveform Generators (CWG) that produce non-overlapping complementary PWM outputs with programmable dead-time for half-bridge and full-bridge driving. These peripherals enable the PIC16F1823 to handle real-time tasks such as LED dimming, motor commutation, and logic glue functions autonomously while the CPU is in Sleep mode. The 7KB Flash provides ample code space for application logic, while the 512B SRAM supports data buffering for communication protocols. The 10-bit ADC with 11 channels covers nearly all I/O pins for analog measurement. The 5-bit DAC provides a programmable reference voltage for comparator thresholds or bias voltage generation. The EUSART with auto-wake-up on sync break supports LIN bus communication in automotive applications. The extended -40 to +125C temperature range supports automotive and industrial environments.

The PIC16F1823T-E/SL operates as an Enhanced Mid-Range 8-bit PIC microcontroller. Key subsystems include: (1) Enhanced Core – a 14-bit instruction word, 8-bit data bus RISC processor with 49 instructions (vs. 35 in classic mid-range); 16-level hardware stack (vs. 8); 32MHz operation provides up to 8 MIPS; the enhanced core adds indirect addressing modes, conditional branch instructions, and a FSR0/FSR1 dual pointer system; (2) CLC (Configurable Logic Cell) – four independent programmable logic blocks, each with 4 inputs (selectable from I/O pins, other CLC outputs, comparators, or peripherals), a configurable logic function (AND-OR, OR-XOR, D flip-flop, JK flip-flop, etc.), and an output that can be routed to I/O pins, other CLCs, or peripherals; CLCs can implement state machines, custom logic, and peripheral interconnects without CPU intervention; they continue to operate in Sleep mode; (3) CWG (Complementary Waveform Generator) – takes an input signal (from PWM, CLC, comparator, etc.) and generates two complementary outputs with programmable dead-time insertion and output polarity; the dead-time prevents shoot-through in half-bridge motor drivers and LED drivers; the auto-shutdown feature can disable the outputs based on a fault input from a comparator or external pin; (4) DAC – a 5-bit resistive ladder DAC with 32 voltage steps from 0V to VDD; the output can be routed to a comparator reference or an external pin; the DAC can be used as a programmable threshold for the comparator or as a bias voltage for sensor excitation.

• LED driver: CWG generates complementary PWM for buck LED driver, CLC implements overcurrent fault logic, 5-bit DAC sets dimming reference
• Motor commutation: CWG with dead-time drives half-bridge, ADC reads current shunt, CLC implements sensorless commutation logic
• LIN bus node: EUSART with auto-wake detects sync break, 512B SRAM buffers message, Sleep mode for low power