DSPIC33CK32MC102T-I/SS - 100MHz DSC, 32KB Flash | Microchip
MPN: DSPIC33CK32MC102T-I/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 |
DSPIC33CK32MC102T-I/SS Overview
A Digital Signal Controller combines the computational architecture of a digital signal processor with the peripheral integration and ease of use of a microcontroller, occupying the middle tier of the embedded control hierarchy: microcontroller -> DSC -> application-specific DSP. DSCs are optimized for real-time closed-loop control, where fast interrupt latency, deterministic math, and tightly coupled PWM/ADC peripherals matter more than raw throughput.
Key features of the dsPIC33CK32MC102 include a single 100 MHz dsPIC DSC core with DSP engine, 3 integrated operational amplifiers (OpAmps) that offload external analog front-ends, 12-bit ADCs for high-resolution current and voltage sensing, and high-resolution PWM peripherals for motor control and digital power conversion. The Flash supports ECC and fault-injection testing, and the SRAM includes Memory Built-in Self-Test (MBIST), supporting functional-safety (FuSa) development. The device operates from 3.0 V to 3.6 V.
Technically, the modified Harvard architecture uses 24-bit instruction words with DSP multiply-accumulate instructions, barrel shifting, and 4 DMA channels that move ADC and UART data without CPU intervention. Three serial I/O ports (UART, SPI, I2C) and 3 timers round out the peripheral set.
Typical applications include brushless DC and PMSM motor control, digital power supplies (LLC, totem-pole PFC), touch sensing, and advanced sensor interfaces - all domains where the 100 MIPS core and integrated op-amps reduce BOM count and loop latency.
Design consideration: the 3.0-3.6 V supply window requires a tight LDO or buck regulator; also note the device must be decoupled with low-ESR ceramics on all VDD pins per Microchip layout guidelines.
This page synthesizes distributor pricing context, drop-in family alternatives, pinout guidance, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33CK32MC102T-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 DSPIC33CK32MC102T-I/SS (same form factor and footprint) — differing in Operating Temperature, Package, Core, On-chip OpAmps, PWM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CK32MC102T-E/SS
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33CK32MP102T-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33CK32MC102-H/SS
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33CK64MC102T-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.18 / Unit
View Datasheet →DSPIC33CK32MC103T-I/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK64MC103T-I/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128MC202T-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33CK32MC102T-I/SS Maximum Ratings & Electrical Characteristics
| Core | dsPIC33CK 16-bit DSC core |
| CPU Speed | Up to 100 MIPS (100 MHz) |
| Program Flash Size | 32 KB (32K x 8) with ECC |
| Data SRAM Size | 8 KB with MBIST |
| Supply Voltage Range | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (I grade) |
| Package | 28-SSOP |
| Mounting Type | Surface Mount |
| On-chip OpAmps | 3 |
| ADC Resolution | 12-bit |
| PWM Peripherals | Yes (high-resolution PWM) |
| DMA Channels | 4 |
| Timers | 3 |
| Serial I/O Ports | 3 (UART, SPI, I2C) |
| Functional Safety Support | Yes (FuSa, ECC Flash, MBIST) |
| AEC-Q100 | Qualified (Automotive, per DigiKey listing) |
| RoHS Status | Compliant (per distributor listings) |
DSPIC33CK32MC102T-I/SS Pin Configuration
| Pin 1 | MCLR — Master clear reset / programming voltage input |
| Pin 2 | AN0/RA0 — Analog input 0 / port A bit 0 |
| Pin 3 | AN1/RA1 — Analog input 1 / port A bit 1 |
| Pin 4 | PGD2/AN2 — In-circuit debug data 2 / analog input 2 |
| Pin 5 | PGC2/AN3 — In-circuit debug clock 2 / analog input 3 |
| Pin 6 | AN4/C1IN1- — Analog input 4 / comparator/op-amp 1 inverting input |
| Pin 7 | VDD — Positive supply (3.0 V to 3.6 V) |
| 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 | PWM1H/AN8 — PWM 1 high output / analog input 8 |
| Pin 12 | PWM1L/AN9 — PWM 1 low output / analog input 9 |
| Pin 13 | AN10 — Analog input 10 |
| Pin 14 | AN11 — Analog input 11 |
| Pin 15 | SOSCI/AN12 — Secondary oscillator input / analog input 12 |
| Pin 16 | SOSCO/AN13 — Secondary oscillator output / analog input 13 |
| Pin 17 | VSS — Ground reference |
| Pin 18 | C1IN1+/AN14 — Op-amp/comparator 1 non-inverting input / analog input 14 |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive supply (3.0 V to 3.6 V) |
| Pin 21 | PGD1/TDI — In-circuit debug data 1 / programming data |
| Pin 22 | PGC1/TMS — In-circuit debug clock 1 / programming clock |
| Pin 23 | SDA1/RP — I2C data 1 / remappable peripheral pin |
| Pin 24 | SCL1/RP — I2C clock 1 / remappable peripheral pin |
| Pin 25 | U1TX/RP — UART 1 transmit / remappable peripheral pin |
| Pin 26 | U1RX/RP — UART 1 receive / remappable peripheral pin |
| Pin 27 | RP/AN — Remappable peripheral pin / analog input |
| Pin 28 | AVSS — Analog ground reference |
Typical Applications
DSPIC33CK32MC102T-I/SS is suitable for 6 applications: BLDC/PMSM Motor Control, Digital Power Conversion, Automotive Sensing and Control Nodes, Capacitive Touch Interfaces, Advanced Sensor Signal Chains, Industrial Embedded Control.
BLDC/PMSM Motor Control
The DSPIC33CK32MC102T-I/SS fits sensorless and sensored motor-control drives because its 100 MHz (100 MIPS) dsPIC33CK core executes field-oriented control (FOC) loops fast enough for high electrical-speed motors, while the 3 integrated op-amps amplify low-side shunt currents without an external amplifier IC. In a typical topology, the 12-bit ADC is triggered synchronously by the high-resolution PWM center to sample phase currents at PWM mid-point, minimizing switching noise; the 4 DMA channels move samples to SRAM without CPU overhead. Compared with a general MCU solution, the deterministic DSP multiply-accumulate engine and integrated analog reduce loop latency and BOM cost, making the MC variant ideal for cost-optimized industrial drives up to a few hundred watts.
Recommended
Digital Power Conversion
The DSPIC33CK32MC102T-I/SS is well suited to LLC converters, totem-pole PFC stages, and DC-DC modules where the 100 MIPS core closes voltage and current loops at switching frequencies of 100 kHz to several hundred kHz. The high-resolution PWM peripherals provide sub-nanosecond effective duty-cycle resolution for precise phase management, and the 12-bit ADC with DMA captures fast current transients for cycle-by-cycle limiting. A key quantified benefit is loop speed: a proportional-integral current loop can execute well within one switching period at 100 MIPS, meeting transient-response targets that 8-bit or slower 16-bit MCUs miss. The 3.0-3.6 V supply and 28-SSOP footprint allow the controller to sit directly on the power board near the gate-driver circuitry.
Recommended
Automotive Sensing and Control Nodes
Thanks to AEC-Q100 qualification and functional-safety features (ECC on program Flash and SRAM Memory Built-in Self-Test), the DSPIC33CK32MC102T-I/SS serves automotive body, pump, fan, and sensor-node controllers. The -40C to +85C I-grade rating covers cabin and under-chassis zones, while the /E variant extends to +125C for under-hood use in the same 28-SSOP footprint. The 3 op-amps condition resistive or inductive sensors locally, and the UART/SPI/I2C ports integrate with CAN-transceiver-equipped or LIN-adjacent architectures through external transceivers. Using ECC and MBIST reduces the diagnostic burden on system-level safety analysis, shortening ISO 26262-style development time for ASIL-supported functions where a DSC-based node is acceptable.
Recommended
Capacitive Touch Interfaces
Microchip explicitly lists touch sensing as a target for the dsPIC33CK family, and the DSPIC33CK32MC102T-I/SS implements charge-transfer touch scanning using the ADC and I/O with Microchip's Touch Controller library. The 100 MHz core performs oversampling and drift-compensation algorithms in the background while the 12-bit ADC measures channel charge times with microsecond-level determinism, supporting buttons, sliders, and wheels on a single 28-pin device. Because touch scanning shares the ADC with other sensing tasks, the 4 DMA channels keep raw samples off the CPU, preserving headroom for the main application. Typical products include appliance panels, light switches, and industrial HMI sub-panels where the integrated op-amps remain available for sensor front-ends.
Recommended
Advanced Sensor Signal Chains
The DSPIC33CK32MC102T-I/SS consolidates an entire analog sensor front-end on chip: the 3 operational amplifiers can be configured as gain stages or filters for bridge, thermocouple, or current-shunt signals, feeding the 12-bit ADC directly. This eliminates discrete op-amp ICs, shrinking the PCB area of industrial sensor nodes and portable instrumentation. The 100 MIPS DSP engine applies offset correction, averaging, and FFT-based analysis in real time, while the I2C/SPI/UART ports stream processed data to a host. A concrete benefit is signal-chain noise: shortening the analog path from external amplifier to ADC by placing both on the same die reduces pickup at the sensitive high-impedance node. End products include condition-monitoring nodes, smart transmitters, and weigh-scale front ends.
Recommended
Industrial Embedded Control
As a general industrial controller, the DSPIC33CK32MC102T-I/SS handles valve drivers, actuator control, lighting ballasts, and small PLC I/O modules. The -40C to +85C industrial temperature grade and 3.0-3.6 V operation align with standard industrial 3.3 V rails, and the 32 KB ECC-protected Flash provides firmware integrity without external memory. The 3 timers plus 4 DMA channels manage multi-task timing deterministically, while UART, SPI, and I2C support Modbus-RTU, sensor buses, and configuration links. Its 28-SSOP package fits dense DIN-rail and embedded boards where a 64- or 100-pin controller is oversized. Code developed on larger dsPIC33CK MP devices ports directly to this 32 KB part when the application footprint shrinks, protecting software investment.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CK32MC102T-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CK32MC102T-E/SS | DSPIC33CK32MP102T-I/SS | DSPIC33CK64MC102T-I/SS | DSPIC33EP128MC202T-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 |
| CPU Speed | 100 MHz (100 MIPS) | 100 MHz (100 MIPS) | 100 MHz (100 MIPS) | 100 MHz (100 MIPS) | ~70 MIPS (EP generation) |
| Program Flash | 32 KB (ECC) | 32 KB (ECC) | 32 KB (ECC) | 64 KB (ECC) | 128 KB |
| Operating Temperature | -40C to +85C (I grade) | -40C to +125C (E grade) | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +85C (I grade) |
| 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 |
Key Differentiators
- 3 integrated operational amplifiers reduce BOM cost (vs DSPIC33EP128MC202T-I/SS)
- 100 MIPS vs ~70 MIPS DSP throughput (vs DSPIC33EP128MC202T-I/SS)
- Extended-temperature sibling without respin (vs DSPIC33CK32MC102T-E/SS)
- More code space when firmware grows (vs DSPIC33CK64MC102T-I/SS)
Design Notes
The dsPIC33CK32MC102 requires a tight 3.0-3.6 V supply. Feed all VDD pins from a low-ESR 3.3 V LDO or buck regulator and place 100 nF ceramic decoupling capacitors within 2 mm of each VDD/VSS pair, plus one 4.7-10 uF bulk capacitor near the device. Because core and I/O share the rail on this family, supply ripple directly modulates ADC accuracy - budget at least 60 dB PSRR in the regulator or add an RC/LC filter for the analog rail (AVSS pin at pin 28 must tie to a clean ground return). Estimated: a 30 mA average core current from a 3.3 V rail dissipates about 0.1 W, well within SSOP thermal limits without a heatsink.
For motor-control or digital-power layouts, keep the shunt-resistor-to-op-amp-input traces short and symmetric, and route them as Kelvin connections to pins 6 and 18 (C1IN1-/C1IN1+). Separate the analog ground region connected to AVSS from power-switching ground, joining them at a single star point near the shunt return. Place the 28-SSOP so PWM outputs (pins 11-12) face the gate-driver stage to minimize loop area. Follow Microchip's dsPIC33CK family layout guidelines in the datasheet PCB chapter; violating analog-ground separation is the most common cause of noisy ADC readings in first-pass boards.
Three frequent mistakes with this part: (1) selecting the I-grade (-40C to +85C) for designs that later migrate to under-hood locations - the /E variant in the same 28-SSOP footprint solves this without a respin; (2) underestimating 32 KB Flash - ECC adds safe operation but not capacity, so use the pin-compatible 64 KB dsPIC33CK64MC102 when firmware margins are tight; (3) ignoring the peripheral Pin Select (PPS) mapping - UART/SPI pins are remappable, so verify the pinout table in the family datasheet before finalizing routing, and always reserve PGD1/PGC1 (pins 21-22) access for in-circuit debug programming.
Compliance Information
DigiKey listings classify this part as Automotive, AEC-Q100, and Functional Safety (FuSa) qualified; RoHS compliance indicated on distributor listings (PCBElectronics). REACH, halogen-free, and conflict-minerals status not stated in provided data.
