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dsPIC33CK32MP503T-I/M5 - 100MHz 32KB DSC | Microchip

The Microchip Technology dsPIC33CK32MP503T-I/M5 is a 16-bit digital signal controller (DSC) from the dsPIC33CK family operating at up to 100 MHz, with 32KB of Flash program memory and 8KB of RAM, housed in a 36-pin UQFN (5x5 mm) package with exposed pad. A digital signal controller combines the computational capability of a digital signal processor with the peripheral set and ease of use of a microcontroller. In the power management hierarchy, the dsPIC33CK sits above basic MCUs and is purpose-built for closed-loop digital power conversion, motor control, and advanced sensing, where deterministic interrupt latency and high-resolution timing are essential. Key features include a 100 MHz dsPIC DSC core with DSP engine, 3x2 high-speed PWMs with 2 ns effective resolution for precise switching control, a 12-bit/3.5 Msps ADC supporting 15 channels, three integrated analog op amps, three analog comparators, a 12-bit DAC, and CAN Flexible Data (CAN FD) serial connectivity. Peripheral Trigger Generator (PTG) support enables autonomous, CPU-light peripheral sequencing. Architecturally, the dsPIC33CK core uses an enhanced 16-bit Harvard architecture with zero-overhead looping and hardware multiply-accumulate, executing control loops in the tens of microseconds. The -I temperature suffix qualifies the device for -40C to +125C operation on a 3.0V to 3.6V supply, and the device is offered in a Functional Safety (FuSa) supported variant suitable for industrial safety designs. Typical applications include digital switch-mode power supplies (AC-DC, DC-DC), PFC stages, brushless DC and PMSM motor drives, and CAN FD networked industrial control nodes. Design consideration: the 36-pin UQFN 5x5 mm package concentrates VDD/VSS and analog pins on specific corners; follow the Microchip reference layouts and place the 12-bit ADC's dedicated analog supply decoupling close to the pins for the full 3.5 Msps performance. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet.