DSPIC33FJ32GP202T-I/SS
DSPIC33FJ32GP202T-I/SS - 16-Bit DSC 40MIPS 32KB | Microchip
The Microchip Technology DSPIC33FJ32GP202T-I/SS is a 16-bit digital signal controller (DSC) from the dsPIC33F family that delivers 40 MIPS throughput with 32 KB of Flash program memory and 2 KB of SRAM, housed in a 28-lead SSOP package. It combines a modified RISC CPU core with a DSP engine, offering single-cycle 16x16-bit multiply-accumulate (MAC) operations for real-time control and signal processing.
A digital signal controller (DSC) is a hybrid device that merges the deterministic interrupt handling and peripheral integration of a microcontroller (MCU) with the arithmetic throughput of a digital signal processor (DSP). In the system hierarchy, a DSC sits between a general-purpose MCU and a dedicated DSP: it executes control-loop code and signal-processing math on the same core, eliminating the need for two separate processors in motor control, power conversion, and sensor-fusion designs. The dsPIC33F family is Microchip's mainstream 16-bit DSC line, positioned above the PIC24 MCU family and below the dsPIC33E/dsPIC33C families.
Key features of the DSPIC33FJ32GP202T-I/SS include 40 MIPS operation at 3.0 V to 3.6 V, 32 KB Flash with 2 KB SRAM, up to 35 general-purpose I/O pins, a 10-bit ADC, high-speed PWM outputs, and up to four high-speed comparators with direct connection to the PWM module. The device supports In-Circuit Serial Programming (ICSP) and in-circuit debugging through the PGECx/PGEDx pin pairs, enabling field firmware updates without removing the controller from the board.
The dsPIC33F core uses a 24-bit instruction word with a 16-bit data path and a barrel shifter, allowing division and normalization in a single cycle. The DSP engine supports fractional and integer arithmetic, saturation logic, and two 40-bit accumulators, which are essential for implementing digital filters, Park/Clarke transforms, and PID loops in motor-control firmware. The 3.3 V CMOS process keeps dynamic power low while maintaining 40 MIPS at the maximum rated clock.
Typical applications include brushless DC (BLDC) and permanent-magnet synchronous motor (PMSM) control, digital power supplies, solar micro-inverters, automotive sensor conditioning, and industrial instrumentation. The combination of 40 MIPS, hardware PWM, and fast ADC makes the DSPIC33FJ32GP202T-I/SS well suited to closed-loop control where loop latency directly affects stability margins.
When designing with this device, keep the ICSP trace between the programming connector and the PGECx/PGEDx pins as short as possible, and decouple every VDD pin with a 0.1 uF ceramic capacitor placed close to the package. The 28-lead SSOP footprint (0.65 mm pitch) requires careful solder-paste stencil design to avoid bridging.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single reference for selection, replacement, and layout decisions.
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