PIC24EP128MC202-E/SP
PIC24EP128MC202-E/SP - 16-bit 60 MIPS 128KB Flash Motor MCU | Microchip
The Microchip Technology PIC24EP128MC202-E/SP is a 16-bit PIC24EP family microcontroller engineered for high-performance precision motor control, delivering 60 MIPS (70 MIPS for the underlying 24EP core) of computational throughput with 128 KB of Flash program memory and 16 KB of RAM, housed in a 28-pin SPDIP (0.300 inch) through-hole package. The -E/SP suffix denotes the -40C to +125C extended industrial/automotive temperature grade and SPDIP packaging, and the device is qualified to AEC-Q100 for automotive applications.
A 16-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripherals on one die, executing instructions on 16-bit-wide data paths to balance code density, deterministic interrupt response, and arithmetic performance for embedded control. PIC24EP parts sit within the broader PIC microcontroller taxonomy (PIC10/12/16/18/24/32) and specifically the PIC24E sub-family, which adds enhanced DSP instructions, dual read-port Flash, and high-speed PWM peripherals that the 'MC' (Motor Control) variants further optimize.
Key differentiating features include a 12-bit ADC with up to 500 ksps conversion rate, dual 16-bit/32-bit op-amps accessible to the ADC front-end, high-resolution PWM (typical 7.14 ns resolution at 70 MIPS) for field-oriented control (FOC) loops, four 32-bit timer/capture modules, two UART, two SPI, and one I2C peripheral, plus a 32-bit CRC engine. The 'MC' peripheral set was specifically tuned for sensorless and sensored BLDC, PMSM, ACIM, and stepper motor control, including hardware fault inputs and PWM shutdown logic.
Architecturally, the PIC24EP uses a Harvard-style modified RISC core with a 24-bit instruction word and dual-port Flash allowing live reads while executing, accelerating firmware hot paths in motor ISR loops. The high-speed ADC-to-PWM datapath, with the op-amps pre-conditioning current shunt signals, lets a single MCU close current, torque, and velocity loops at 20-50 kHz without an external DSP.
Typical applications include brushless DC (BLDC) and permanent-magnet synchronous (PMSM) motor controllers for appliance pumps and fans, automotive body and HVAC actuators, industrial servo drives, drone ESCs, robotic joints, and field-oriented control drives for low-voltage battery-powered tools. Designers also deploy this part in power-conversion front-ends that require high-resolution PWM plus the on-chip op-amps for current sensing.
When designing with the PIC24EP128MC202-E/SP, allocate the op-amp outputs to dedicated ADC channels to minimize latency, and use the on-chip high-resolution PWM for low-speed torque ripple reduction. Be aware that the 28-SPDIP package imposes a larger PCB footprint than equivalent QFN parts, so confirm mechanical fit before selecting this packaging option.
This page synthesizes authorized Microchip parametric data, DigiKey distributor pricing, package diagrams, and pin-to-pin compatible drop-in alternatives - engineering content not consolidated on a single manufacturer or distributor page.
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