dsPIC33CK32MP503T-I/M5 - 100MHz 32KB DSC | Microchip
MPN: DSPIC33CK32MP503T-I/M5 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.43 | $3.43 |
| 10 | $3.2 | $32.00 |
| 100 | $2.98 | $298.00 |
| 500 | $2.8 | $1,400.00 |
| 1,000 | $2.62 | $2,620.00 |
DSPIC33CK32MP503T-I/M5 Overview
A digital signal controller combines the computational capability of a digital signal processor with the peripheral set and ease of use of a microcontroller. In the power management hierarchy, the dsPIC33CK sits above basic MCUs and is purpose-built for closed-loop digital power conversion, motor control, and advanced sensing, where deterministic interrupt latency and high-resolution timing are essential.
Key features include a 100 MHz dsPIC DSC core with DSP engine, 3x2 high-speed PWMs with 2 ns effective resolution for precise switching control, a 12-bit/3.5 Msps ADC supporting 15 channels, three integrated analog op amps, three analog comparators, a 12-bit DAC, and CAN Flexible Data (CAN FD) serial connectivity. Peripheral Trigger Generator (PTG) support enables autonomous, CPU-light peripheral sequencing.
Architecturally, the dsPIC33CK core uses an enhanced 16-bit Harvard architecture with zero-overhead looping and hardware multiply-accumulate, executing control loops in the tens of microseconds. The -I temperature suffix qualifies the device for -40C to +125C operation on a 3.0V to 3.6V supply, and the device is offered in a Functional Safety (FuSa) supported variant suitable for industrial safety designs.
Typical applications include digital switch-mode power supplies (AC-DC, DC-DC), PFC stages, brushless DC and PMSM motor drives, and CAN FD networked industrial control nodes.
Design consideration: the 36-pin UQFN 5x5 mm package concentrates VDD/VSS and analog pins on specific corners; follow the Microchip reference layouts and place the 12-bit ADC's dedicated analog supply decoupling close to the pins for the full 3.5 Msps performance.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33CK32MP503T-I/M5 — 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 DSPIC33CK32MP503T-I/M5 (same form factor and footprint) — differing in Operating Temperature, Package, Core Architecture, Flash Program Memory, RAM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CK32MP503T-E/M5
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33CK32MP503T-H/M5
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33CK64MP503T-I/M5
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK16MP503T-I/M5
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CH64MP503-I/M5
✅ Drop-In✓ In Stock
$3.55 / Unit
View Datasheet →DSPIC33CK128MC503T-I/M5
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3 / Unit
View Datasheet →DSPIC33CK32MP503T-I/M5 Specifications (manufacturer-published)
| Core Architecture | 16-bit dsPIC33CK DSC |
| Maximum Clock Frequency | 100 MHz |
| Flash Program Memory | 32 KB (32K x 8) |
| RAM | 8 KB |
| Supply Voltage Range | 3.0 V to 3.6 V |
| ADC Resolution | 12-bit |
| ADC Sample Rate | 3.5 Msps |
| Op Amps | 3 |
| Analog Comparators | 3 |
| DAC | 12-bit |
| PWM | 4x2 high-speed PWM, 2 ns resolution |
| Serial Interfaces | CAN FD, UART, SPI, I2C |
| Peripheral Features | PTG (Peripheral Trigger Generator) |
| Operating Temperature | -40C to +125C (I grade) |
| Package | 36-UQFN (5x5 mm) with exposed pad |
| Mounting Type | Surface Mount |
| Functional Safety Support | FuSa variant supported |
DSPIC33CK32MP503T-I/M5 Interfaces & Connectors
DSPIC33CK32MP503T-I/M5 exposes the following interfaces and connectors as published by the manufacturer: Power Input, Expansion / Buses. Expansion header pinout, connector pin numbering, and electrical limits are defined in the manufacturer documentation.
| Power Input | 3.0 V to 3.6 V |
| Expansion / Buses | 12-bit |
Refer to the manufacturer documentation for the full expansion header pinout and connector pin numbering.
Power & Thermal Characteristics
| Power Input | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +125C (I grade) |
Power input and thermal parameters for DSPIC33CK32MP503T-I/M5 as published by the manufacturer.
Typical Applications
DSPIC33CK32MP503T-I/M5 is suitable for 6 applications: Digital Switch-Mode Power Supplies, Brushless DC and PMSM Motor Control, CAN FD Networked Industrial Control Nodes, Advanced Sensing and Signal Conditioning, Power over Ethernet and Server Power Supplies, Automotive-Adjacent and High-Temperature Industrial Systems.
Digital Switch-Mode Power Supplies
The dsPIC33CK32MP503T-I/M5 is purpose-built for digitally controlled AC-DC and DC-DC converters. Its 4x2 high-speed PWM with 2 ns effective resolution provides the fine duty-cycle granularity needed for high-frequency LLC, buck, and PFC stages, while the 12-bit/3.5 Msps ADC with 15 channels samples voltage and current feedback with low latency for fast control loops at 10-100 kHz update rates. Three on-chip op amps condition shunt and resistive divider signals without external amplifiers, reducing BOM cost. The 100 MHz DSP core executes PID and predictive control algorithms deterministically. Unlike fixed-function controllers, firmware enables programmable protection, soft-start profiles, and telemetry via CAN FD or UART.
Recommended
Brushless DC and PMSM Motor Control
For field-oriented control (FOC) of BLDC and PMSM motors, the dsPIC33CK32MP503T-I/M5 delivers the timing precision and analog integration the application demands. The 2 ns-resolution PWM generates precise dead times and complementary outputs for three-phase inverters, and the 3.5 Msps 12-bit ADC samples phase currents synchronized to PWM edges to eliminate switching noise in measurements. The three integrated op amps enable low-cost single-shunt or dual-shunt current sensing directly. The 100 MHz core sustains FOC loops at 10-20 kHz with headroom for observer-based sensorless algorithms. Three analog comparators provide hardware overcurrent trip without CPU intervention, protecting the power stage within microseconds.
Recommended
CAN FD Networked Industrial Control Nodes
The integrated CAN Flexible Data rate (CAN FD) controller makes the dsPIC33CK32MP503T-I/M5 a strong choice for industrial nodes that must both perform local control and communicate on a modern CAN FD backbone. CAN FD data-phase rates far exceed classic CAN, enabling fast parameter updates, firmware download, and rich telemetry while the 100 MHz core simultaneously runs deterministic control loops. The Peripheral Trigger Generator (PTG) sequences ADC sampling and control actions autonomously, keeping CPU load low during communication servicing. The -40C to +125C industrial rating and FuSa-supported variant extend applicability to factory automation, servo drives, and networked power modules.
Recommended
Advanced Sensing and Signal Conditioning
The dsPIC33CK32MP503T-I/M5 integrates three op amps, three comparators, a 12-bit DAC, and a 3.5 Msps 12-bit ADC, allowing a complete analog signal chain on one die. Sensor outputs from thermistors, pressure bridges, and current shunts can be amplified by the on-chip op amps, thresholded by comparators, and digitized with high sample rate and 15 selectable channels. The PTG automates multi-sensor scanning sequences, and DSP instructions perform filtering (IIR/FIR) on the fly. This single-chip integration reduces external component count, PCB area, and analog channel mismatch, making it ideal for smart transmitters, battery management sensing front-ends, and condition-monitoring modules.
Recommended
Power over Ethernet and Server Power Supplies
Datacenter and server power conversion demands digital controllers with fast ADCs, high-resolution PWM, and telemetry connectivity - all met by the dsPIC33CK32MP503T-I/M5. Its 2 ns PWM resolution supports interleaved and phase-shifted topologies common in server PSUs, while CAN FD or UART links report health status to the system management processor. The 100 MHz core implements adaptive control and load-sharing algorithms. The -40C to +125C rating tolerates hot airflow near power stages. Firmware-based control enables PMBus-style telemetry implementations and field-updatable protection thresholds, reducing return rates compared with fixed-function analog controllers in high-availability server power designs.
Recommended
Automotive-Adjacent and High-Temperature Industrial Systems
For environments demanding extended temperature capability - underhood industrial equipment, high-power LED drivers, and heat-soaked power converters - the dsPIC33CK32MP503 family offers -E and -H graded variants in the identical 36-UQFN footprint, with the H grade rated to 150C. The I-grade dsPIC33CK32MP503T-I/M5 itself covers -40C to +125C, adequate for most industrial enclosures. Hardware overcurrent comparators, watchdog facilities, and FuSa-supported configuration help designs targeting safety-oriented industrial systems. Because the package and pinout are shared across grades, one PCB layout can serve multiple temperature classes, simplifying qualification across product families.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CK32MP503T-I/M5 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CK32MP503T-E/M5 | DSPIC33CK32MP503T-H/M5 | DSPIC33CK64MP503T-I/M5 | DSPIC33CH64MP503-I/M5 |
|---|---|---|---|---|---|
| Package | 36-UQFN (5x5 mm) | 36-UQFN (5x5 mm) - same | 36-UQFN (5x5 mm) - same | 36-UQFN (5x5 mm) - same | 36-UQFN (5x5 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Clock | 100 MHz | 100 MHz | 100 MHz | 100 MHz | 100 MHz (dual-core) |
| Flash Memory | 32 KB | 32 KB | 32 KB | 64 KB | 64 KB |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| Core Architecture | Single-core 16-bit dsPIC33CK DSC | Single-core dsPIC33CK - same | Single-core dsPIC33CK - same | Single-core dsPIC33CK - same | Dual-core dsPIC33CH (not firmware-compatible) |
Key Differentiators
- Integrated analog front-end (3 op amps + 3 comparators) (vs DSPIC33CK128MC503T-I/M5)
- 2 ns PWM resolution for digital power (vs DSPIC33CH64MP503-I/M5)
- Temperature-grade scaling on one PCB (vs DSPIC33CK32MP503T-E/M5)
- Honest limitation: no cross-brand drop-in exists (vs TI C2000 / ST STM32G4 families)
Design Notes
The dsPIC33CK32MP503T-I/M5 operates from a single 3.0V to 3.6V rail shared by the digital core and analog peripherals. Because the 12-bit ADC and op amps reference the same supply, rail noise directly limits effective resolution: place 100 nF ceramic capacitors on every VDD pin within 2 mm of the pin and add 4.7-10 uF bulk near the package. If the 3.3V rail comes from a switching converter upstream, add an LC filter or small LDO for the analog supply per Microchip's dsPIC33CK power design guidance.
The 36-UQFN (5x5 mm) M5 package has an exposed pad that must be soldered to a grounded thermal landing for heat dissipation and mechanical reliability - omitting the pad connection risks solder voids and elevated junction temperature at 100 MHz operation. Fan out PGEC/PGED programming pairs with a 5-pin header, using any matched PGECx/PGEDx pair consistently (e.g., PGEC2 with ICSPCLK must pair with PGED2/ICSPDAT). Keep high-speed PWM traces short and equal length to the gate drivers to preserve the 2 ns PWM resolution benefit.
Do not mix PGEC and PGED pairs during ICSP wiring - the programmer will fail to connect even though the pins appear individually correct. When migrating firmware from the 32KB MP503 to the 64KB MP64MP503 or 16KB MP16MP503, adjust linker memory maps in MPLAB X; the pinout is unchanged, but flash size constants change. Finally, the -E and -H temperature variants are drop-in electrically, but verify their stock lead times early - extended-grade dsPIC parts frequently carry longer factory lead times than the -I grade.
Compliance Information
RoHS, REACH, and lead-free status were not stated in the verified web data; confirm on the Microchip product page environmental section before release. Automotive AEC-Q100 qualification is not claimed for this part in the provided data.
