DSPIC33CK32MP105-E/M4 - 100MHz 16-bit DSC, 32KB Flash | Microchip
MPN: DSPIC33CK32MP105-E/M4 ✓ 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 |
DSPIC33CK32MP105-E/M4 Overview
A digital signal controller combines the control peripherals of a microcontroller with the mathematical throughput of a digital signal processor in one chip. In the power-management hierarchy, the DSC sits above basic MCUs and below multi-core application processors, making it the standard device class for closed-loop digital power conversion, motor control and advanced sensing where deterministic, cycle-accurate control loops are executed at high sample rates.
Key features include the 100 MIPS (100 MHz) modified Harvard DSP core with single-cycle MAC and DSP instruction support, a high-speed 12-bit ADC capable of feeding fast control loops, multiple integrated operational amplifiers and comparators that reduce external analog BOM count, and high-resolution PWM peripherals purpose-built for power conversion topologies. The -E suffix denotes an extended -40C to +125C operating temperature range, and the device is AEC-Q100 qualified with Functional Safety (FuSa) support documentation.
Architecturally, the dsPIC33CK single-core design pairs the DSP engine with intelligent analog peripherals clocked from the same 100 MHz system clock, enabling deterministic ADC-sample-to-PWM-update latency critical for peak-current-mode control and sensorless field-oriented control (FOC). Microchip positions this family for digital power, motor control, advanced sensing and general embedded control.
Typical applications include switched-mode power supplies (AC-DC, DC-DC), PFC stages, BLDC and PMSM motor drives, LED drivers, and automotive/industrial sensing nodes.
Design consideration: validate PCB thermal relief under the UQFN exposed pad, since sustained 100 MHz operation at extended temperature requires a solid ground pour for heat spreading.
This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33CK32MP105-E/M4 — 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 DSPIC33CK32MP105-E/M4 (same form factor and footprint) — differing in Package, Core, ADC Resolution, Operating Temperature, Comparators.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CK32MP105-I/M4
✅ Drop-In✓ In Stock
$2.94 / Unit
View Datasheet →DSPIC33CK32MC105-E/M4
✅ Drop-In✓ In Stock
$3.2 / Unit
View Datasheet →DSPIC33CK64MP105-E/M4
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK64MC105-E/M4
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.8 / Unit
View Datasheet →DSPIC33CK32MP105T-E/M4
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33CK32MP105-E/M4 Maximum Ratings & Electrical Characteristics
| Core | dsPIC33CK 16-bit single-core DSC |
| Core Speed | 100 MHz (100 MIPS) |
| Flash Memory | 32 KB (32K x 8) |
| RAM | 8 KB |
| ADC Resolution | 12-bit |
| Integrated Op Amps | Yes |
| Comparators | Yes (high-speed) |
| PWM Peripherals | High-speed PWM |
| Supply Voltage | 3.3 V |
| Operating Temperature | -40C to +125C (E grade) |
| Package | 48-UQFN (6x6 mm), exposed pad |
| Mounting Type | Surface Mount |
| Qualification | AEC-Q100, Functional Safety (FuSa) |
| Product Family | dsPIC33CK (dsPIC33C DSC) |
| Application Segments | Automotive, industrial, digital power, motor control |
DSPIC33CK32MP105-E/M4 48-uqfn (6x6 mm), exposed pad Pin Configuration Guide
Pin configuration for DSPIC33CK32MP105-E/M4 (48-uqfn (6x6 mm), exposed pad 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 DSPIC33CK32MP105-E/M4.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33CK32MP105-E/M4 is suitable for 6 applications: Digital Power Supplies (AC-DC / DC-DC), Sensorless BLDC / PMSM Motor Control, Power Factor Correction (PFC) Stages, Automotive Sensing and Control Nodes, Smart Sensors and Capacitive Touch Interfaces, LED Drivers and Lighting Control.
Digital Power Supplies (AC-DC / DC-DC)
The DSPIC33CK32MP105-E/M4 fits digital power conversion because its 100 MHz (100 MIPS) DSP core with single-cycle MAC executes voltage- and current-mode control loops at switching frequencies well above 100 kHz with deterministic latency, while the high-speed 12-bit ADC samples feedback with low conversion delay. The high-speed PWM peripheral provides complementary outputs, dead-time insertion and fault trip inputs required for half-bridge, full-bridge and LLC topologies, and integrated op amps condition shunt-current signals without external amplifiers, shrinking the analog BOM. In a typical topology the DSC closes the loop in firmware, replacing analog compensation networks and enabling adaptive features such as burst mode, soft-start scheduling and telemetry via UART/CAN. The -E grade (-40C to +125C) tolerates enclosure heat near the power stage, and the exposed-pad UQFN-48 spreads die heat into the PCB ground pour.
Recommended
Sensorless BLDC / PMSM Motor Control
The DSPIC33CK32MP105-E/M4 is purpose-built for field-oriented control (FOC) of BLDC and PMSM motors: the 100 MHz single-cycle DSP core runs Clarke/Park transforms and PI current loops at PWM-synchronized rates, the 12-bit ADC performs dual-shunt or single-shunt current sampling triggered directly by the PWM peripheral, and the integrated op amps and comparators enable overcurrent protection within microseconds without external comparators. The -E extended temperature rating (-40C to +125C) suits motor-drive enclosures that run hot, and the 48-UQFN 6x6 mm footprint fits compact inverter boards. Microchip provides motor-control libraries and reference designs for the dsPIC33CK family, shortening time to a sensorless solution. Firmware portability to the 64 KB DSPIC33CK64MP105-E/M4 leaves headroom for protocol stacks such as CAN-based motion control.
Recommended
Power Factor Correction (PFC) Stages
In boost-PFC applications the DSPIC33CK32MP105-E/M4 delivers the loop bandwidth and analog integration that PFC demands. The 12-bit high-speed ADC samples input voltage, inductor current and bulk-capacitor voltage every switching cycle, while the 100 MHz core executes average-current-mode compensation with low and predictable control latency. The high-speed PWM supports valley/leading-edge synchronization with a downstream DC-DC stage, and integrated comparators provide cycle-by-cycle overcurrent protection. Because the DSC implements the control law in firmware, THD optimization, brownout handling and frequency foldback are software features rather than hardware redesigns. The AEC-Q100 qualification and Functional Safety support make the part acceptable for server and telecom PSU front ends, and its 3.3 V operation simplifies interface with housekeeping supplies on the control board.
Recommended
Automotive Sensing and Control Nodes
The DSPIC33CK32MP105-E/M4 is AEC-Q100 qualified and supports Functional Safety (FuSa) development, making it appropriate for automotive sensing and control nodes such as solenoid drivers, pump controllers, and analog sensor acquisition modules. The extended -40C to +125C temperature grade covers under-hood and near-actuator environments, the integrated 12-bit ADC plus op amps digitize resistive and current-loop sensors directly, and the high-speed PWM can drive valves or small actuators with closed-loop current control. Peripheral pin-select flexibility lets designers route UART, SPI and other serial functions to match existing harness and board constraints. Its 48-UQFN 6x6 mm package supports compact ECU sub-boards, and code compatibility with the broader dsPIC33CK family protects firmware investment across platform variants and future flash-size upgrades.
Recommended
Smart Sensors and Capacitive Touch Interfaces
With intelligent analog peripherals - high-performance 12-bit ADCs, op amps, high-speed comparators and DACs - the DSPIC33CK32MP105-E/M4 implements smart-sensor nodes that condition, digitize and process signals locally before reporting over UART, SPI or I2C. Microchip notes the related dsPIC33CK MC family is loaded for real-time capacitive touch applications; the MP variant retains the same touch-capable architecture plus the motor/power-grade analog mix, so one firmware platform can serve both touch HMI and measurement channels. The 100 MHz core provides ample throughput for filtering, thresholding and even small FFT-based diagnostics on-board. In industrial control panels, appliances and automotive HMI bezels, integrating touch decoding in the same DSC that runs the power or motor loop reduces system part count and removes a separate touch controller from the BOM.
Recommended
LED Drivers and Lighting Control
For high-power LED drivers, the DSPIC33CK32MP105-E/M4 combines the analog front end and PWM control needed for constant-current loops with dimming and fault management. The high-speed 12-bit ADC senses LED current via shunt resistors amplified by the on-chip op amps, the high-speed PWM adjusts the switching converter duty cycle for regulation, and hardware comparators trigger cycle-by-cycle current limiting for open/short protection. Dimming can be implemented through PWM duty or analog current level under firmware control, enabling color-mixing and multi-channel fixtures without dedicated LED-driver ICs. The -E extended temperature rating and AEC-Q100 qualification suit automotive exterior lighting and industrial luminaires, while the compact 48-UQFN 6x6 mm package fits driver boards inside tight luminaire housings. CAN/UART connectivity supports DALI-adjacent networked lighting architectures.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CK32MP105-E/M4 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CK32MP105-I/M4 | DSPIC33CK32MC105-E/M4 | DSPIC33CK64MP105-E/M4 | DSPIC33CK64MC105-E/M4 | DSPIC33CK32MP105T-E/M4 |
|---|---|---|---|---|---|---|
| Package | 48-UQFN (6x6 mm), exposed pad | 48-UQFN (6x6 mm) - same | 48-UQFN (6x6 mm) - same | 48-UQFN (6x6 mm) - same | 48-UQFN (6x6 mm) - same | 48-UQFN (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Speed | 100 MHz (100 MIPS) | 100 MHz | 100 MHz | 100 MHz | 100 MHz | 100 MHz |
| Flash Memory | 32 KB | 32 KB | 32 KB | 64 KB | 64 KB | 32 KB |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| Temperature Range | -40C to +125C (E grade) | -40C to +85C (I grade) | -40C to +125C (E grade) | -40C to +125C (E grade) | -40C to +125C (E grade) | -40C to +125C (E grade) |
| Peripheral Variant | MP (motor control / digital power analog mix) | MP - identical | MC - touch/smart-sensing analog mix | MP - identical | MC - touch/smart-sensing analog mix | MP - identical |
Key Differentiators
- Extended automotive temperature grade (vs DSPIC33CK32MP105-I/M4)
- Motor-control/digital-power analog mix (vs DSPIC33CK32MC105-E/M4)
- Lowest-cost entry to dsPIC33CK performance (vs DSPIC33CK64MP105-E/M4)
Design Notes
Estimated: a dsPIC33CK at 100 MHz with all analog peripherals active typically draws on the order of tens of milliamps from 3.3 V (datasheet current tables should be used for exact figures), so die dissipation is usually under 0.3 W; however, at the -E grade ceiling of +125C ambient, junction margin is small. Solder the UQFN-48 exposed pad to a solid ground pour with an array of thermal vias to spread heat into inner copper layers. Verify theta_JA from the Microchip datasheet and derate clock/peripheral loading for worst-case ambient in sealed enclosures.
Decouple all VDD pins with 100 nF ceramics placed within 2 mm of each pin, plus one bulk 4.7-10 uF capacitor near the device. Follow Microchip's dsPIC33C hardware design guidelines for core-supply (VDDCORE) capacitor requirements - omitting or misplacing this capacitor is the most common cause of unreliable startup. Keep the exposed pad connected to a low-impedance ground plane and use multiple vias for both thermal and return-path reasons.
For motor-control and digital-power layouts, keep ADC sense traces (shunt connections to op amp inputs) short, differential, and away from PWM switch-node copper. Use kelvin connections directly at the shunt resistor pads. Route high-speed PWM outputs away from analog front-end traces and reference the ground plane continuously under them to limit switching noise coupling into the 12-bit ADC conversions.
Do not assume the -I and -E temperature grades are interchangeable in hot environments - the -I/M4 stops at +85C. Also confirm peripheral-feature differences before substituting MC-variant parts (MC105) for MP-variant designs (MP105): the analog/peripheral configuration differs even though the pinout and footprint match. Program the correct configuration bits (oscillator, watchdog, code protection) early; defaults run from a slower internal oscillator rather than the full 100 MHz.
Compliance Information
AEC-Q100 qualification and Functional Safety (FuSa) support confirmed by distributor data (Hotenda, GlobalSpec). TS 16949 qualification noted for the T variant per Microchip USA. RoHS/REACH/lead-free status to be confirmed on the official Microchip product page.
