DSPIC33CK32MP502-E/SS - 100MHz 16-bit DSC, 32KB Flash | Microchip
MPN: DSPIC33CK32MP502-E/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
DSPIC33CK32MP502-E/SS Overview
A digital signal controller is a hybrid of a microcontroller (MCU) and a digital signal processor (DSP): it combines a CPU with MCU-style peripherals, interrupts and Flash memory with DSP-grade multiply-accumulate (MAC) instructions and deterministic loop execution. Within the power-management hierarchy, a DSC sits between a general-purpose MCU and a dedicated DSP, making it the standard choice for closed-loop switch-mode power supplies (SMPS), power factor correction (PFC), and field-oriented motor control.
Key features include the dsPIC33CK core running at DC to 100 MIPS from a 3.0V to 3.6V supply, up to 100 MHz operation with zero-wait-state Flash execution via the dual-panel live-update Flash, and an A/D converter with sample rates suited to high-frequency digital power loops. The -E/SS ordering code denotes the extended (-40C to +150C) temperature grade in the 28-lead SSOP surface-mount package.
Architecturally, the modified Harvard core executes most instructions in a single cycle and pairs a hardware DSP engine with dual partition Flash supporting live firmware updates. Memory built-in self-test (MBIST) on SRAM and ECC on Flash support functional-safety (FuSa) development flows.
Typical applications include digital power supplies, AC-DC and DC-DC converters, brushless DC and PMSM motor control, and high-end sensing and control systems.
Design consideration: the 3.0V to 3.6V operating window requires a 3.3V rail with tight tolerance; budget the VCAP pin decoupling exactly as specified in the datasheet for core regulation stability.
This page synthesizes distributor pricing, same-family drop-in alternatives, pinout data and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33CK32MP502-E/SS — 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 DSPIC33CK32MP502-E/SS (same form factor and footprint) — differing in Package, Operating Temperature, PWM, Core, CAN Interface.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CK32MP502-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.35 / Unit
View Datasheet →DSPIC33CK64MP502-E/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.92 / Unit
View Datasheet →DSPIC33CK32MP503-E/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK64MP503-E/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK32MP502-E/SS Maximum Ratings & Electrical Characteristics
| Core | dsPIC33CK 16-bit DSC |
| Max CPU Speed | 100 MHz (100 MIPS) |
| Program Memory (Flash) | 32 KB with ECC, dual-partition live update |
| Data SRAM | 8 KB with MBIST |
| Operating Voltage | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +150C (E grade) |
| Architecture | Modified Harvard, single-core |
| CAN-FD | Yes, integrated |
| ADC | 12-bit high-speed ADC |
| Op-Amps | Integrated op-amps |
| PWM | High-resolution digital power PWM |
| Package | 28-SSOP (SS) |
| Mounting Type | Surface Mount |
| Functional Safety | FuSa support (Flash ECC, SRAM MBIST) |
| Product Family | dsPIC33CK |
| RoHS Status | Compliant (per Microchip product page) |
DSPIC33CK32MP502-E/SS Pin Configuration
| Pin 1 | MCLR — Master clear reset / programming voltage input |
| Pin 2 | AN0 — Analog input 0 / port I/O |
| Pin 3 | AN1 — Analog input 1 / port I/O |
| Pin 4 | AN2 — Analog input 2 / port I/O |
| Pin 5 | AN3 — Analog input 3 / op-amp input / port I/O |
| Pin 6 | AN4 — Analog input 4 / op-amp input / port I/O |
| Pin 7 | VDD — Positive supply (3.0V to 3.6V) |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI — Crystal oscillator input / external clock input |
| Pin 10 | OSC2/CLKO — Crystal oscillator output / clock output |
| Pin 11 | AN5/RP35 — Analog input 5 / PPS-remappable I/O |
| Pin 12 | AN6/RP36 — Analog input 6 / PPS-remappable I/O |
| Pin 13 | AN7/RP37 — Analog input 7 / PPS-remappable I/O |
| Pin 14 | AVSS — Analog ground reference |
| Pin 15 | AVDD — Analog supply (3.0V to 3.6V) |
| Pin 16 | RP38/AN8 — PPS-remappable I/O / analog input 8 |
| Pin 17 | RP39/AN9 — PPS-remappable I/O / analog input 9 |
| Pin 18 | RP40 — PPS-remappable I/O |
| Pin 19 | RP41 — PPS-remappable I/O |
| Pin 20 | RP42 — PPS-remappable I/O |
| Pin 21 | RP43 — PPS-remappable I/O |
| Pin 22 | RP44 — PPS-remappable I/O |
| Pin 23 | RP45 — PPS-remappable I/O |
| Pin 24 | RP46 — PPS-remappable I/O |
| Pin 25 | PGD/RP47 — In-circuit serial programming data / PPS-remappable I/O |
| Pin 26 | PGC/RP48 — In-circuit serial programming clock / PPS-remappable I/O |
| Pin 27 | VCAP — Core regulator capacitor connection |
| Pin 28 | VSS — Ground reference |
Typical Applications
DSPIC33CK32MP502-E/SS is suitable for 6 applications: Digital Power Supplies (SMPS/PFC), Brushless DC / PMSM Motor Control, CAN-FD Industrial Networking Nodes, Advanced Sensing and Control, High-Temperature Automotive Auxiliary Systems, Embedded Control and IoT Edge Devices.
Digital Power Supplies (SMPS/PFC)
The DSPIC33CK32MP502-E/SS fits digital SMPS and PFC stages because its 100 MHz (100 MIPS) core closes voltage and current loops fast enough for switching converters running at hundreds of kHz, while the high-speed 12-bit ADC samples inductor current and output voltage with low latency. The dedicated digital-power PWM module provides high-resolution duty-cycle and dead-time control essential for LLC and phase-shift topologies. Firmware resides in 32 KB ECC-protected dual-partition Flash, enabling live firmware update of control law changes without hardware rework. Placed as the sole controller between the feedback divider and gate drivers, it eliminates analog compensation components but demands careful loop-software jitter management; deterministic interrupt latency is the key quantified benefit over software-timed solutions.
Recommended
Brushless DC / PMSM Motor Control
For field-oriented control (FOC) of BLDC and PMSM motors, the DSPIC33CK32MP502-E/SS provides the classic single-chip solution: the 100 MHz DSP engine executes Clarke/Park transforms and PI current loops within one PWM period, integrated op-amps amplify low-level phase-current shunt signals internally (saving external amplifiers and board area), and the 12-bit ADC synchronizes sampling to the PWM center for clean current readings. The 28-SSOP footprint suits compact single-motor drives such as pumps, fans, power tools and e-bike controllers. With 8 KB SRAM with MBIST, state estimation buffers fit on-chip. Performance consideration: at 32 KB Flash, full sensorless FOC plus CAN-FD communication stacks require disciplined code size budgeting - use the 64 KB MP502 variant if the stack grows.
Recommended
CAN-FD Industrial Networking Nodes
The integrated CAN-FD module with larger payloads and higher data rates than classical CAN makes this DSC well suited for industrial control nodes that must both run a fast local control loop and communicate on a factory bus - motor drives, LED drivers, and power modules on CANopen-style networks. The 100 MHz core services the CAN-FD FIFO while sustaining 100 MIPS of control code, and peripheral pin select (PPS) lets the CAN TX/RX map flexibly onto the 28-pin budget. The extended -40C to +150C E-grade rating allows mounting near heat-generating power stages inside sealed industrial enclosures. Designers should verify CAN transceiver compliance at the chosen arbitration/data rate, since bit timing depends on the configured peripheral clock.
Recommended
Advanced Sensing and Control
The DSPIC33CK32MP502-E/SS serves advanced sensing nodes that combine analog signal conditioning with local decision-making. Its integrated op-amps buffer sensor outputs, the 12-bit ADC digitizes them at high sample rates, and the DSP MAC instructions implement digital filters (IIR/FIR) and FFT-based analysis in real time - useful for vibration, current-signature and acoustic condition monitoring in industrial equipment. The modified Harvard architecture keeps filter coefficient and sample buffers in separate buses, sustaining deterministic throughput. With ECC Flash and MBIST SRAM, the part supports functional-safety-oriented sensing chains. Board-level benefit: 28-pin SSOP minimizes footprint in dense multi-sensor boards; the trade-off is a limited pin count, so expand I/O via I2C/SPI expanders when more sensor channels are needed.
Recommended
High-Temperature Automotive Auxiliary Systems
The -40C to +150C extended temperature grade of the -E/SS variant targets under-hood and on-engine auxiliary electronics - cooling fan drives, pump controllers, actuators and sensors - where ambient plus self-heating exceeds the +125C limit of standard industrial parts. The 100 MHz core handles FOC motor loops, the integrated op-amps interface current shunts, and CAN-FD connects to vehicle networks. Note that the E-grade rating covers ambient operating temperature; for formal automotive programs, confirm AEC-Q100 qualification status and PPAP availability with Microchip, as the base product page lists extended temperature but formal automotive qualification is order-code dependent. Layout should prioritize thermal vias under the SSOP and short high-current gate-drive traces.
Recommended
Embedded Control and IoT Edge Devices
Beyond power and motor control, the DSPIC33CK32MP502-E/SS is a strong fit for general embedded control and edge nodes needing DSP capability: HVAC controllers, battery testers, lighting ballasts, and lab instruments. The 32 KB Flash with dual-partition live update supports field firmware upgrades over CAN-FD or UART without a bootloader bank-switch hazard, since ECC protects the active partition. The 100 MHz core leaves headroom for protocol stacks alongside the application, and the 3.0V to 3.6V single-supply operation simplifies 3.3V system designs. Development uses standard Microchip MPLAB X IDE and XC16 compiler plus dsPIC33C Curiosity/explorer boards, minimizing tooling cost. Quantified benefit: single-cycle MAC at 100 MHz outperforms typical 8-bit MCUs by an order of magnitude in filter-heavy code.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CK32MP502-E/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CK32MP502-I/SS | DSPIC33CK64MP502-E/SS | DSPIC33CK32MP503-E/SS | DSPIC33CK64MP503-E/SS |
|---|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 100 MHz | 100 MHz | 100 MHz | 100 MHz | 100 MHz |
| Program Flash | 32 KB | 32 KB | 64 KB | 32 KB | 64 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| Temperature Range | -40C to +150C (E) | -40C to +85C (I) | -40C to +150C (E) | -40C to +150C (E) | -40C to +150C (E) |
| CAN-FD | Yes | Yes | Yes | Yes | Yes |
| Integrated Op-Amps | Yes (full count) | Yes (full count) | Yes (full count) | Yes (reduced count) | Yes (reduced count) |
Key Differentiators
- Extended temperature to +150C (vs DSPIC33CK32MP502-I/SS)
- Double the program memory at same footprint (vs DSPIC33CK64MP502-E/SS)
- Full op-amp count in 28-pin package (vs DSPIC33CK32MP503-E/SS)
Design Notes
Supply the DSPIC33CK32MP502-E/SS from a tightly regulated 3.3V rail within the specified 3.0V to 3.6V window; the core regulator requires a low-ESR ceramic capacitor (typically 10 uF) on the VCAP pin exactly as specified in the Microchip datasheet. Decouple each VDD pin with 100 nF close to the pin and add bulk 4.7-10 uF per supply domain. Keep AVDD fed through an RC or ferrite filter from VDD so ADC noise does not couple from the digital rail - critical for the 12-bit ADC in digital power loops.
Use peripheral pin select (PPS) early in layout planning: on a 28-pin package, CAN-FD, UART, PWM outputs and analog inputs compete for the same pins. Route the oscillator with short traces and local ground guard. For motor control layouts, keep PWM outputs to gate drivers away from the analog shunt traces feeding op-amp/ADC inputs, and use the analog ground plane under AVSS as a quiet reference island.
Do not exceed 32 KB of code when porting from dsPIC33CK64/128 family parts - linker overflow at the dual-partition boundary is a common migration failure. Remember the E-grade -150C rating applies to the junction per the datasheet operating conditions; verify junction temperature with your own dissipation estimate rather than assuming ambient equals junction. Enable Flash ECC and MBIST options in configuration if functional-safety features are part of the design intent.
Compliance Information
RoHS compliant and lead-free per Microchip product page listing. REACH, halogen-free and conflict-minerals declarations should be requested from Microchip environmental documentation.
