DSPIC33FJ64GS606-I/MR - 16-bit DSC 40MIPS 64KB Flash | Microchip
MPN: DSPIC33FJ64GS606-I/MR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $11.97 | $11.97 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
DSPIC33FJ64GS606-I/MR Overview
A digital signal controller combines the compute throughput of a digital signal processor (DSP) with the peripheral integration and deterministic control of a microcontroller (MCU). Within the power-management hierarchy, the dsPIC33FJ GS family sits at the top: microcontroller -> digital signal controller -> digital power controller. The GS subfamily is purpose-built for switch-mode power supply (SMPS) control, where deterministic interrupt latency and specialized analog peripherals matter more than general-purpose I/O volume.
Key features include a high-speed PWM module purpose-designed for multi-loop power conversion, a high-speed ADC for current- and voltage-loop sampling, and integrated analog comparators that offload cycle-by-cycle current limiting from software. The device provides 8 timers, 4 DMA channels, and 2 serial I/O ports, with in-circuit (ICSP) and in-application programming plus IEEE 1149.2-compatible JTAG boundary scan for production programming and board-level test.
Architecturally, the CMOS 16-bit core executes DSP-class multiply-accumulate instructions for control-law computation (PID, 3P3Z compensators), supporting multiple internal bus architectures that keep instruction fetch, data access, and DMA transfers from contending. Supply voltage is 3 V to 3.6 V, and the -I temperature grade covers -40C to +85C for industrial environments.
Typical applications include AC-to-DC converters, DC-to-DC converters, power factor correction (PFC) stages, uninterruptible power supplies (UPS), and multi-loop digital SMPS designs. Microchip provides an interleaved PFC reference design specifically for this SMPS dsPIC family.
Design consideration: the QFN package exposes its ground pad beneath the die; a solid VSS grid and thermal via array under the package are essential for signal integrity in high dv/dt power environments.
This page synthesizes verified distributor pricing, drop-in family alternatives, and practical design guidance not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ64GS606-I/MR — 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 DSPIC33FJ64GS606-I/MR (same form factor and footprint) — differing in Package, Core Architecture, Operating Temperature, RAM, Supply Voltage.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ64GS606-E/MR
✅ Drop-In✓ In Stock
$4.43 / Unit
View Datasheet →DSPIC33FJ32GS606-I/MR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ64GS406-I/MR
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.15 / Unit
View Datasheet →DSPIC33FJ32GS406-I/MR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ64GS606-I/MR Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit CMOS DSC |
| Maximum Clock Speed | 40 MHz |
| Maximum Performance | 40 MIPS |
| Program Memory | 64 KB Flash |
| RAM | 9216 words |
| Supply Voltage | 3 V to 3.6 V |
| Timers | 8 |
| DMA Channels | 4 |
| Serial I/O Ports | 2 |
| I/O Ports | 21 |
| Specialized Peripherals | High-Speed PWM, High-Speed ADC, Comparators |
| Debug / Programming | ICSP, In-Application Programming, IEEE 1149.2 compatible JTAG boundary scan |
| Operating Temperature | -40C to +85C (I grade) |
| Package | QFN-44 (MR), 8 x 8 mm, lead-free plastic |
| Mounting Type | Surface Mount |
| Lifecycle Status | Active |
DSPIC33FJ64GS606-I/MR qfn-44 (mr), 8 x 8 mm, lead-free plastic Pin Configuration Guide
Pin configuration for DSPIC33FJ64GS606-I/MR (qfn-44 (mr), 8 x 8 mm, lead-free plastic package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for DSPIC33FJ64GS606-I/MR.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ64GS606-I/MR is suitable for 6 applications: AC-to-DC Converters, Power Factor Correction (PFC), DC-to-DC Converters, Uninterruptible Power Supplies (UPS), Multi-Loop Digital SMPS, Industrial Motor Control Front Ends.
AC-to-DC Converters
The DSPIC33FJ64GS606-I/MR controls off-line AC-to-DC converter front ends where input rectification, bus regulation, and protection logic must run deterministically. Its 40 MIPS core executes control-law math fast enough for switching frequencies in the tens-to-hundreds of kilohertz range, while the high-speed ADC samples input and output rails synchronously with the PWM to minimize control delay. The integrated comparators provide hardware-level cycle-by-cycle overcurrent shutdown that does not depend on software latency. Firmware complexity - soft start, brownout handling, fault management - fits comfortably in the 64 KB flash. Designed around a 3.3 V rail and industrial -40C to +85C operation, the QFN-44 package mounts on the same control board as the gate drivers it commands.
Recommended
Power Factor Correction (PFC)
PFC is a headline application for the GS family: Microchip explicitly lists PFC support and ships an interleaved PFC reference design built on these SMPS dsPIC controllers. The high-speed PWM module can drive interleaved boost phases with programmable phase offsets, while the high-speed ADC captures inductor current and bus voltage each switching cycle for average-current-mode control. The 9216-word RAM and DSP multiply-accumulate capability handle 3P3Z compensator computations at loop rates beyond what conventional MCUs manage. On-chip comparators back up the software current loop with instant hardware overcurrent protection. The 64 KB flash stores multiple operating-mode routines (burst mode, light-load skipping) plus communications firmware without external memory.
Recommended
DC-to-DC Converters
For isolated and non-isolated DC-to-DC converters, the DSPIC33FJ64GS606-I/MR provides the digital control core for phase-shifted full-bridge, half-bridge, buck, and boost topologies. The high-speed PWM module's complementary outputs with programmable dead time directly drive gate-driver inputs, and its resolution supports the tight phase-shift control that full-bridge converters demand. The high-speed ADC converts output voltage and primary current signals synchronized to the PWM period, keeping sampling jitter out of the loop. Four DMA channels stream conversion results to RAM without core intervention, preserving CPU cycles for the compensation algorithm. Fault inputs tied to comparators enable sub-microsecond shutdown on overcurrent events.
Recommended
Uninterruptible Power Supplies (UPS)
UPS systems combine an AC-DC charger, a DC-AC inverter, and transfer logic - exactly the multi-loop, multi-converter workload the GS family was architected for. The DSPIC33FJ64GS606-I/MR can run the inverter sine-wave PWM modulation while monitoring battery voltage and current through the high-speed ADC, all on one chip, reducing board area and inter-processor communication. The 64 KB flash accommodates the state machine (standby, charging, inverting, bypass) plus sinusoidal lookup tables and fault logs. Eight timers support multiple time bases for battery telemetry, line-frequency synchronization, and PWM generation. JTAG boundary scan supports manufacturing test of the densely packed control board.
Recommended
Multi-Loop Digital SMPS
Multi-loop power supplies - voltage loop, current loop, and PFC loop running simultaneously - are the design center of the GS family. Microchip states these devices offer features supporting common, multi-loop digital switch-mode power supplies. The DSPIC33FJ64GS606-I/MR dedicates its high-speed PWM, high-speed ADC, and comparators to these nested loops: the ADC samples multiple channels per PWM period, DMA moves data off the core, and the DSP engine computes both compensators within the control deadline. Cycle-by-cycle limiting via comparators protects each stage independently of software. The 3-3.6 V supply and QFN-44 footprint let the controller sit directly on the power board's low-voltage control island.
Recommended
Industrial Motor Control Front Ends
Although optimized for power conversion, the GS606's high-speed PWM and ADC also suit industrial drives and motion-control power stages where servo loops and power electronics converge. The 40 MIPS core with DSP multiply-accumulate instructions executes Clarke/Park transforms and PI current loops for FOC-type schemes, while the PWM module generates the complementary three-phase switching patterns with dead-time control. The industrial -40C to +85C rating suits factory-floor ambient conditions, and the two serial I/O ports provide connectivity to higher-level controllers or HMIs. Four DMA channels maintain background telemetry without disturbing the real-time control interrupt, keeping loop jitter minimal across the -40C to +85C range.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ64GS606-I/MR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ64GS606-E/MR | DSPIC33FJ32GS606-I/MR | DSPIC33FJ64GS406-I/MR | DSPIC33FJ32GS406-I/MR |
|---|---|---|---|---|---|
| Package | QFN-44 (MR) 8 x 8 mm | QFN-44 (MR) 8 x 8 mm - same | QFN-44 (MR) 8 x 8 mm - same | QFN-44 (MR) 8 x 8 mm - same | QFN-44 (MR) 8 x 8 mm - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 64 KB | 64 KB | 32 KB | 64 KB | 32 KB |
| Core Performance | 40 MHz / 40 MIPS, 16-bit | 40 MHz / 40 MIPS | 40 MHz / 40 MIPS | 40 MHz / 40 MIPS | 40 MHz / 40 MIPS |
| Operating Temperature | -40C to +85C (I) | Extended grade (E) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) |
| Peripheral Set | Full GS606 set: high-speed PWM, ADC, comparators | Identical | Identical | Reduced (GS406 variant) | Reduced (GS406 variant) |
| Lifecycle Status | Active | Active | Active (verify current status) | Active (verify current status) | Active (verify current status) |
Key Differentiators
- SMPS-dedicated analog peripherals (vs DSPIC33FJ64GS406-I/MR)
- Extended-temperature sibling for harsh environments (vs DSPIC33FJ64GS606-E/MR)
- Double the code headroom vs 32 KB sibling (vs DSPIC33FJ32GS606-I/MR)
Design Notes
The QFN-44 (8 x 8 mm) package requires a well-defined landing pattern with an exposed center ground pad. Connect the pad to a solid VSS plane through a 4x4 (or denser) via array - this is both the primary ground return for the high-speed PWM drivers and the thermal path. Per Microchip's ICSP guidance, route one PGECx/PGEDx pair to a programming header and keep it short; do not share these pins with high-di/dt power traces, as noise on PGED during programming or debugging causes communication failures.
Supply is 3 V to 3.6 V. Place a 0.1 uF ceramic capacitor at every VDD pin, within 2-3 mm of each pin, plus one 4.7-10 uF bulk capacitor near the package. In digital-power boards, the 3.3 V rail often shares space with gate-driver supplies; separate the DSC analog supply with an RC or ferrite filter and return PWM gate currents to a dedicated ground island so ADC readings are not corrupted by switching spikes. Estimated: a 0.1 uF cap with 10 nH trace inductance self-resonates near 160 MHz, adequately covering PWM edge harmonics.
Three recurring issues with this family: (1) firmware exceeding 64 KB flash after adding communications - verify code size margin before choosing the 32 KB GS606 substitute; (2) using mismatched PGEC/PGED pairs - ICSP requires a matched pair (e.g., PGEC2+PGED2), per Microchip's programming guide; (3) leaving all VSS/VDD pins unconnected on the layout - the datasheet explicitly requires all supply pins connected for programming and operation. Also confirm stock early: LCSC showed only 6 units as of 2026-09-27.
Compliance Information
Package described as 'LEAD FREE, PLASTIC, QFN-44' in verified datasheet index data. REACH, halogen-free, and conflict-minerals status not stated in the provided data.
