DSPIC33CK128MP202T-I/SS - 100MHz 16-bit DSC 128KB Flash | Microchip
MPN: DSPIC33CK128MP202T-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.6 | $2.60 |
| 10 | $2.38 | $23.80 |
| 100 | $2.15 | $215.00 |
| 500 | $1.98 | $990.00 |
| 1,000 | $1.82 | $1,820.00 |
DSPIC33CK128MP202T-I/SS Overview
A digital signal controller combines the computational power of a DSP with the peripheral integration and ease of use of a microcontroller. Within the power management IC hierarchy, the dsPIC33CK family sits between general-purpose MCUs and dedicated digital power controllers, offering deterministic single-cycle MAC and DSP instructions. Modified Harvard architecture with independent program and data buses enables concurrent instruction fetch and data access at full 100 MIPS throughput.
Key features include operation from a 3.0V to 3.6V supply across -40C to +125C (industrial, denoted by the I suffix), high-resolution PWM generators suited to digital power converters, and Functional Safety (FuSa) support per DigiKey categorization. The dual-partition Flash with live update allows firmware updates without external storage, and Data SRAM with Memory Built-In Self-Test (MBIST) supports safety-oriented designs.
The 28-pin SSOP (0.65 mm pitch) package integrates DSP engine, DMA, and serial peripherals (UART, SPI, I2C) into a compact footprint, making the device suitable where board area is constrained.
Typical applications include digital power supplies (LLC, totem-pole PFC), brushless DC and PMSM motor control, and advanced sensing in industrial systems. The 100 MHz core executes control loops at switching frequencies beyond 500 kHz.
Design consideration: the 3.0V to 3.6V operating window requires a well-regulated 3.3V rail; decouple all VDD/VSS pin pairs with 0.1 uF ceramics placed within 2 mm of the pins.
This page synthesizes distributor pricing, drop-in alternatives, and design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33CK128MP202T-I/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 DSPIC33CK128MP202T-I/SS (same form factor and footprint) — differing in Package, Operating Temperature, Core, PWM, Supply Voltage.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CK128MP202T-E/SS
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33CK128MP202T-H/SS
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33CK128MP202-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33CK64MP202T-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.08 / Unit
View Datasheet →DSPIC33CK256MP202T-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.2 / Unit
View Datasheet →DSPIC33CK128MP202T-I/SS Maximum Ratings & Electrical Characteristics
| Core | dsPIC33CK 16-bit DSC |
| Core Speed | 100 MHz (100 MIPS) |
| Program Memory Size | 128 KB (128K x 8) Flash |
| Program Memory Type | Flash with ECC, dual-partition (live update) |
| Operating Voltage | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +125C (I grade) |
| Package | 28-SSOP, 0.65 mm pitch |
| Mounting Type | Surface Mount |
| Architecture | Modified Harvard, single-core |
| Data Bus Width | 16 bit |
| Program Memory Width | 24 bit |
| Peripherals | High-Resolution PWM, DMA, MBIST |
| Safety Feature | Functional Safety (FuSa) support |
| Packaging | Tape & Reel (T suffix) |
| Standard Package Qty | 2100 |
| RoHS Status | Compliant |
| Supply Voltage Max | 3.6 V |
DSPIC33CK128MP202T-I/SS Pin Configuration
| Pin 1 | MCLR — Master clear reset (active low), programming voltage input |
| Pin 2 | AN0/RA0 — Analog input 0 / port pin |
| Pin 3 | AN1/RA1 — Analog input 1 / port pin |
| Pin 4 | PGD/RP1 — ICSP data, remappable peripheral pin |
| Pin 5 | PGC/RP2 — ICSP clock, remappable peripheral pin |
| Pin 6 | RP3 — Remappable peripheral pin (UART/SPI/I2C/PWM) |
| Pin 7 | RP4 — Remappable peripheral pin (UART/SPI/I2C/PWM) |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI — External crystal/clock input |
| Pin 10 | OSC2/CLKO/RC15 — Crystal output / clock output / port pin |
| Pin 11 | VDD — Positive supply, 3.0 V to 3.6 V |
| Pin 12 | RP5 — Remappable peripheral pin (UART/SPI/I2C/PWM) |
| Pin 13 | RP6 — Remappable peripheral pin (UART/SPI/I2C/PWM) |
| Pin 14 | RP7 — Remappable peripheral pin (UART/SPI/I2C/PWM) |
| Pin 15 | RP8 — Remappable peripheral pin (UART/SPI/I2C/PWM) |
| Pin 16 | RP9 — Remappable peripheral pin (UART/SPI/I2C/PWM) |
| Pin 17 | VDD — Positive supply, 3.0 V to 3.6 V |
| Pin 18 | VSS — Ground reference |
| Pin 19 | AN11/RP10 — Analog input 11 / remappable peripheral pin |
| Pin 20 | AN10/RP11 — Analog input 10 / remappable peripheral pin |
| Pin 21 | RP12 — Remappable peripheral pin (UART/SPI/I2C/PWM) |
| Pin 22 | RP13 — Remappable peripheral pin (UART/SPI/I2C/PWM) |
| Pin 23 | RP14 — Remappable peripheral pin (UART/SPI/I2C/PWM) |
| Pin 24 | RP15 — Remappable peripheral pin (UART/SPI/I2C/PWM) |
| Pin 25 | AN7/RP16 — Analog input 7 / remappable peripheral pin |
| Pin 26 | AN6/RP17 — Analog input 6 / remappable peripheral pin |
| Pin 27 | VDD — Positive supply, 3.0 V to 3.6 V |
| Pin 28 | VSS — Ground reference |
Typical Applications
DSPIC33CK128MP202T-I/SS is suitable for 6 applications: Digital Power Supplies, Brushless DC and PMSM Motor Control, Industrial Sensing and Control Nodes, LED Lighting and Electronic Ballasts, Battery Chargers and Power Conversion, Embedded Control and IoT Edge Nodes.
Digital Power Supplies
The dsPIC33CK128MP202T-I/SS is purpose-built for digital power conversion: its 100 MHz (100 MIPS) core executes current- and voltage-loop control at switching frequencies of several hundred kHz, while the high-resolution PWM generators provide the fine duty-cycle and phase resolution required by LLC resonant, buck, boost, and totem-pole PFC topologies. According to the Microchip product page, digital power is a primary target of the dsPIC33CK family. In a typical topology, the DSC closes loops in software, replacing analog compensators and enabling adaptive modes, telemetry, and firmware-updatable characteristics. The ECC-protected dual-partition Flash with live update allows field firmware upgrades without a spare controller. Trade-off: software control consumes CPU headroom, so verify loop execution time against the 100 MIPS budget at your target switching frequency.
Recommended
Brushless DC and PMSM Motor Control
For sensorless BLDC and PMSM drives, the DSPIC33CK128MP202T-I/SS combines a 100 MHz 16-bit core with dedicated high-resolution PWM outputs and fast 12-bit ADC sampling synchronized to PWM triggers, enabling field-oriented control (FOC) loops running at 20-100 kHz. The single-cycle DSP MAC accelerates Clark/Park transforms and PI compensators. Industrial -40C to +125C operation suits motor drive environments where ambient and self-heating are significant. Typical implementations use complementary PWM pairs with dead-time control for a three-phase inverter, with the ADC sampling shunt or phase currents at PWM mid-points to minimize switching noise. The 28-pin SSOP keeps drive-board footprint compact for integrated motor modules. Confirm that the pin-mapped PWM and ADC channel allocation covers your three-phase sensing scheme before layout, as 28 pins constrain simultaneous peripheral use.
Recommended
Industrial Sensing and Control Nodes
The DSPIC33CK128MP202T-I/SS serves as an intelligent sensing node where analog signals must be conditioned, converted, filtered, and transmitted over UART, SPI, or I2C. The dsPIC33CK core's DSP instructions implement FIR/IIR filtering efficiently in firmware, and 4 DMA channels offload data movement between the ADC and RAM without CPU intervention. The 3.0V to 3.6V supply matches standard industrial 3.3V rails, and the industrial temperature grade covers most factory-floor enclosures. Compared with a general-purpose MCU, the DSC offers higher effective throughput for oversampling and averaging schemes that boost effective resolution beyond the ADC's nominal bits. Design consideration: with 128 KB Flash, complex protocol stacks and filtering pipelines coexist comfortably, but budget code size early if planning future feature additions via the live-update dual-partition scheme.
Recommended
LED Lighting and Electronic Ballasts
Digitally controlled LED drivers and HID ballasts benefit from the high-resolution PWM of the dsPIC33CK128MP202T-I/SS: fine duty and frequency adjustment enables precise current regulation, dimming curves, and active power-factor correction within a single 28-pin controller. The 100 MHz core handles both the power-conversion control loop and housekeeping (temperature derating, fault handling, communication) in one device, eliminating an auxiliary MCU. Industrial temperature range and a tightly regulated 3.3V rail suit sealed luminaires where junction temperatures approach +125C. Firmware-based control also permits tunable constant-current setpoints and multi-string sequencing without hardware changes. Thermal caution: in enclosed fixtures, keep computed junction temperature below the +125C rating by derating load and ensuring copper pours under the SSOP-28 power and ground pins dissipate controller heat effectively.
Recommended
Battery Chargers and Power Conversion
Smart battery chargers use the DSPIC33CK128MP202T-I/SS to implement charge profiles (CC/CV, taper, temperature-qualified charging) entirely in firmware while its high-resolution PWM drives the synchronous buck or flyback power stage at hundreds of kHz. The 16 KB of RAM and 128 KB Flash accommodate charge-state machines, coulomb counting, and safety supervision, and the ECC-protected Flash plus MBIST-backed SRAM align with functional-safety practices noted in the family datasheet. The dual-partition live-update feature permits in-field charging-algorithm updates as cell chemistries evolve - valuable for product platforms spanning multiple battery types. The 3.0V to 3.6V supply is derived from an auxiliary bias winding or small LDO from the bus. Verify ADC sampling timing against your current-ripple frequency to keep regulation accurate across load transients.
Recommended
Embedded Control and IoT Edge Nodes
As a general embedded controller, the dsPIC33CK128MP202T-I/SS offers a 100 MHz 16-bit pipeline with DSP acceleration, making it appropriate for edge nodes that preprocess signals (FFT, filtering) before transmission. Serial peripherals (UART, SPI, I2C) connect radio modules, sensors, and memory, while 4 DMA channels keep CPU load low during high-rate data streaming. Compared with a 32-bit MCU, the 16-bit DSC provides deterministic single-cycle multiply-accumulate with smaller code for fixed-point DSP, often reducing Flash and RAM requirements at equivalent signal-processing throughput. The 28-pin SSOP suits cost-sensitive, space-constrained nodes. Design tip: if your roadmap includes heavy connectivity stacks such as TCP/IP or BLE host layers, evaluate Flash utilization early - 128 KB is generous for control, moderate for large protocol stacks.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CK128MP202T-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CK128MP202T-E/SS | DSPIC33CK128MP202T-H/SS | DSPIC33CK64MP202T-I/SS | DSPIC33CK256MP202T-I/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 |
| Core Speed | 100 MHz | 100 MHz | 100 MHz | 100 MHz | 100 MHz |
| Program Flash | 128 KB | 128 KB | 128 KB | 64 KB | 256 KB |
| Operating Temperature | -40C to +125C | -40C to +150C | -40C to +125C (AEC-Q100) | -40C to +125C | -40C to +125C |
| Automotive Qualification | No | No | Yes (AEC-Q100) | No | No |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V |
| Flash ECC + Live Update | Yes | Yes | Yes | Yes | Yes |
| Packaging | Tape & Reel (2100) | Tape & Reel | Tape & Reel | Tape & Reel | Tape & Reel |
Key Differentiators
- Industrial temperature grade with 128 KB Flash (vs DSPIC33CK64MP202T-I/SS)
- Extended temperature option at identical footprint (vs DSPIC33CK128MP202T-E/SS)
- Lower cost than automotive-qualified variant (vs DSPIC33CK128MP202T-H/SS)
Design Notes
Supply the DSPIC33CK128MP202T-I/SS from a tightly regulated 3.3V rail within the datasheet's 3.0V to 3.6V window. In digital power applications, PWM output stage switching injects significant ripple onto the controller supply; use a dedicated LDO or ferrite-isolated branch from the main 3.3V rail and place 0.1 uF ceramics at every VDD/VSS pin pair within 2 mm. Estimated: a controller drawing ~50 mA at 3.3 V dissipates only ~0.17 W, so junction heating is dominated by ambient, not self-heating, at room temperature.
Keep the crystal (OSC1/OSC2, pins 9-10) loop as short as possible with guard ground around it. MCLR (pin 1) needs a 4.7-10 kOhm pull-up plus a series resistor for ICSP robustness with PICkit 4 / ICD 4 tools. Because peripherals are remappable via RP pins, finalize your pin-mapping table in firmware before PCB routing and lock it - late remapping after layout is a common cause of respins on 28-pin designs where every pin is contested.
Do not confuse the CK (single-core) and CH (dual-core) families - packages and pinouts differ despite similar names. The /I grade tops out at +125C: in enclosed power supplies, Estimated: with theta_JA of roughly 90-110 C/W for a 28-SSOP on minimal copper (verify exact value in the datasheet thermal section), only ~15-20 C of self-heating is allowable at +110C ambient. Choose DSPIC33CK128MP202T-E/SS (-40C to +150C) if your thermal budget is tight.
Compliance Information
RoHS compliant per DigiKey categorization of the /I suffix part. AEC-Q100 applies to the /H variant (DSPIC33CK128MP202T-H/SS), not this industrial-grade part.
