DSPIC33FJ32MC102T-I/SS - 16-bit DSC, 16 MIPS, 32KB Flash | Microchip
MPN: DSPIC33FJ32MC102T-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.62 | $4.62 |
| 10 | $4.16 | $41.60 |
| 100 | $3.71 | $371.00 |
| 500 | $3.32 | $1,660.00 |
| 1,000 | $2.95 | $2,950.00 |
DSPIC33FJ32MC102T-I/SS Overview
A digital signal controller combines the computational core of a 16-bit microcontroller with the mathematical acceleration of a DSP. Within the power-management hierarchy, the dsPIC33F family sits between general-purpose MCUs (such as PIC18) and full DSPs, adding a multiple internal bus architecture, a barrel shifter, and hardware multiply-accumulate support for control-loop mathematics while retaining MCU-class peripherals and low-power modes.
Key features include the motor control PWM (MCPWM) module for complementary and center-aligned PWM generation, the Charge Time Measurement Unit (CTMU) for capacitive touch and precise time measurement, Peripheral Pin Select (PPS) allowing flexible remapping of digital peripherals to any RPn pin, and an extensive DSP engine. These peripherals directly address cost-sensitive motor drive and digital power designs that need deterministic control loops.
Technically, the device is a CMOS 16-bit RISC core with modified Harvard architecture, supporting DSP instructions (MAC, barrel shifting) and low-power sleep and idle modes. Flash program memory is 32KB organized as 11K x 24-bit instruction words, with 2KB of SRAM data memory. Operating voltage is 3.3V, and the -I temperature suffix indicates -40C to +85C industrial operation.
Typical applications include BLDC and PMSM motor control, digital power supplies (switching converters with feedback control loops), lighting ballasts, sensor signal conditioning with the CTMU, and embedded industrial automation nodes.
Design consideration: use the PGECx/PGEDx pins for In-Circuit Serial Programming (ICSP) and keep ICSP traces short; connect the exposed metal pad (if used) to VSS per the datasheet layout guidance.
This page synthesizes distributor pricing context, verified drop-in same-family alternatives, and practical design notes beyond what the manufacturer datasheet provides.
Drop-in alternatives for DSPIC33FJ32MC102T-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 DSPIC33FJ32MC102T-I/SS (same form factor and footprint) — differing in Package, Operating Temperature, ADC, Core Architecture, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ32MC102T-E/SS
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ32MC102-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.85 / Unit
View Datasheet →DSPIC33FJ32MC101-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.68 / Unit
View Datasheet →DSPIC33FJ12MC202-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.62 / Unit
View Datasheet →DSPIC33FJ12MC201-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.46 / Unit
View Datasheet →DSPIC33FJ16GP102T-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.95 / Unit
View Datasheet →DSPIC33FJ32MC102T-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit CMOS dsPIC RISC, modified Harvard |
| Maximum Clock Frequency | 32 MHz |
| Performance | 16 MIPS |
| Program Memory (Flash) | 32 KB (11K x 24) |
| RAM | 2 KB |
| Supply Voltage | 3.3 V |
| Motor Control PWM (MCPWM) | Yes |
| Charge Time Measurement Unit (CTMU) | Yes |
| Peripheral Pin Select (PPS) | Yes |
| DSP Engine | Barrel shifter, multiple internal bus architecture |
| Low-Power Modes | Sleep, Idle |
| Operating Temperature | -40C to +85C (industrial, -I suffix) |
| Package | 28-lead SSOP (R-PDSO-G28), 5.30 mm width |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel (T prefix) |
| Programming Interface | ICSP via PGECx/PGEDx pins |
| Series | dsPIC33FJ32MC102 |
DSPIC33FJ32MC102T-I/SS Pin Configuration
| Pin 1 | MCLR — Master clear reset, also ICSP programming voltage input |
| Pin 2 | AN0/VREF+/CN2/RB0 — Analog input 0 / positive voltage reference / change notification / port B0 |
| Pin 3 | AN1/VREF-/CN3/RB1 — Analog input 1 / negative voltage reference / change notification / port B1 |
| Pin 4 | AN2/SS1/CN4/RB2 — Analog input 2 / SPI slave select / change notification / port B2 |
| Pin 5 | AN3/INDX/CN5/RB3 — Analog input 3 / QEI index / change notification / port B3 |
| Pin 6 | AN4/QEA/IC7/CN6/RB4 — Analog input 4 / QEI phase A / input capture 7 / port B4 |
| Pin 7 | VDD — Positive supply |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI/CN7/RA2 — Primary oscillator input / external clock input / port A2 |
| Pin 10 | OSC0/CLKO/CN8/RA3 — Primary oscillator output / clock output / port A3 |
| Pin 11 | SOSCI/T2CK/CN9/RC13 — Secondary oscillator input / Timer2 clock / port C13 |
| Pin 12 | SOSCO/T1CK/CN10/RC14 — Secondary oscillator output / Timer1 clock / port C14 |
| Pin 13 | VDD — Positive supply |
| Pin 14 | VSS — Ground reference |
| Pin 15 | AN5/RB5 — Analog input 5 / port B5 |
| Pin 16 | AN9/RB15 — Analog input 9 / port B15 |
| Pin 17 | AN6/OCFA/RB6 — Analog input 6 / PWM fault A / port B6 (also remappable RP pin) |
| Pin 18 | AN7/RB7 — Analog input 7 / port B7 (also remappable RP pin) |
| Pin 19 | AN8/RB8 — Analog input 8 / port B8 (remappable RP pin) |
| Pin 20 | AN10/RB9 — Analog input 10 / port B9 (remappable RP pin) |
| Pin 21 | AN11/RB10 — Analog input 11 / port B10 (remappable RP pin) |
| Pin 22 | AN12/RB11 — Analog input 12 / port B11 (remappable RP pin) |
| Pin 23 | VSS — Ground reference |
| Pin 24 | VDD — Positive supply |
| Pin 25 | AN13/RB12 — Analog input 13 / port B12 (remappable RP pin) |
| Pin 26 | AN14/RB13 — Analog input 14 / port B13 (remappable RP pin) |
| Pin 27 | AVDD — Analog positive supply |
| Pin 28 | AVSS — Analog ground |
Typical Applications
DSPIC33FJ32MC102T-I/SS is suitable for 6 applications: BLDC / PMSM Motor Control, Digital Power Supplies and Converters, Capacitive Touch and Sensor Interfaces (CTMU), Lighting Ballasts and LED Drivers, Industrial Automation and Sensing Nodes, Power Tools and Appliance Motor Drives.
BLDC / PMSM Motor Control
The DSPIC33FJ32MC102T-I/SS is purpose-built for brushless DC and permanent-magnet synchronous motor drives. Its motor control PWM (MCPWM) module generates complementary, center-aligned, or edge-aligned PWM outputs with dead-time insertion required for three-phase inverter bridges, while the 16 MIPS DSP core with barrel shifter executes field-oriented control and PI current-loop mathematics deterministically at the 32MHz maximum clock. In a typical design the controller runs a 20kHz+ PWM loop, samples phase currents through the ADC, and commutates using hall or sensorless back-EMF feedback. Peripheral Pin Select (PPS) lets engineers route PWM, capture, and communication pins optimally on a 28-pin board. The 32KB FLASH holds both the control firmware and commutation tables, and the 3.3V industrial-grade device survives -40C to +85C environments typical of fans, pumps, and power tools.
Recommended
Digital Power Supplies and Converters
In switch-mode power supplies, LLC converters, and PFC stages, the DSPIC33FJ32MC102T-I/SS replaces analog control loops with digital compensation. The MCPWM module provides the high-resolution PWM drive for the power stage, and the ADC plus DSP engine closes the voltage and current feedback loops at switching frequencies of 100kHz and above, with loop coefficients computed using the 16-bit multiply-accumulate DSP instructions at 16 MIPS. Digital control enables adaptive compensation, soft-start sequencing, and fault logging that analog controllers cannot match. The CTMU adds precise time and charge measurement for auxiliary sensing such as input voltage qualification. With 32KB of FLASH, full state machines plus compensation code fit on-chip, and Peripheral Pin Select simplifies routing on compact 28-SSOP boards. Microchip's digital power reference designs for the dsPIC33FJ MC family provide proven start points.
Recommended
Capacitive Touch and Sensor Interfaces (CTMU)
The Charge Time Measurement Unit (CTMU) on the DSPIC33FJ32MC102T-I/SS enables capacitive touch buttons, sliders, and precision time/charge measurements without a dedicated touch controller. The CTMU works with the internal comparator and ADC to measure charge time on a sensing pad with sub-nanosecond resolution, supporting micochip mTouch-style implementations directly in the 32KB FLASH. In industrial panels and appliance controls this eliminates BOM cost and external ICs. Combined with the CTMU's current-source capability, the device also supports ultra-precise interval timing for ultrasonic and flow-sensing front ends. The 16 MIPS core filters raw readings and drives outputs or communicates results over remappable UART or SPI pins via Peripheral Pin Select. Because the whole sensing function runs on the main DSC, designers avoid a second MCU, keeping the 28-SSOP footprint as the sole controller in the product.
Recommended
Lighting Ballasts and LED Drivers
High-intensity discharge (HID) ballasts and digitally controlled LED drivers benefit from the DSPIC33FJ32MC102T-I/SS's combination of MCPWM outputs and DSP control bandwidth. The MCPWM module drives half-bridge or full-bridge stages with configurable dead time and complementary outputs for lamp ignition and run-frequency sweeping, while the ADC feedback loop maintains regulated lamp current or LED current using PI compensation executed by the 16-bit DSP engine. The 32KB FLASH accommodates ignition state machines, fault protection (open-lamp, short-circuit), and dimming protocols on a single die. Peripheral Pin Select lets the 28-pin device expose PWM, feedback, and communication pins wherever board layout demands, which matters in compact luminaire electronics where the 5.30mm-wide SSOP body fits narrow form factors. The -40C to +85C industrial range covers outdoor and enclosed lighting environments.
Recommended
Industrial Automation and Sensing Nodes
As a node controller in factory automation, the DSPIC33FJ32MC102T-I/SS handles sensor acquisition, local closed-loop control, and serial communication in one 28-SSOP package. Its 16 MIPS 16-bit core with DSP instructions processes filter and FFT workloads from vibration, pressure, or current sensors, while remappable UART, SPI, and I2C via Peripheral Pin Select connect to transceivers and displays. The CTMU can serve precision timing for pulse-based sensors. Low-power Sleep and Idle modes suit battery-backed or duty-cycled nodes, and the multiple internal bus architecture keeps deterministic control-loop timing even while servicing communication. With 32KB FLASH and 2KB RAM, protocol stacks such as Modbus RTU fit alongside application logic. Industrial -40C to +85C rating and 3.3V CMOS operation make it dependable on machine-mounted PCBs with the compact 5.30mm SSOP body easing dense board placement.
Recommended
Power Tools and Appliance Motor Drives
Cost-sensitive, high-volume products such as cordless power tools, fans, vacuum cleaners, and kitchen appliances use the DSPIC33FJ32MC102T-I/SS as a single-chip motor controller. The low pin count (28-SSOP) reduces PCB cost while the MCPWM module still delivers the complementary PWM and dead-time control needed for sensorless BLDC drives, and the 16 MIPS DSP core runs back-EMF commutation and current limiting in real time at the 32MHz maximum clock. 32KB FLASH holds the entire drive firmware including protection routines for stall, overcurrent, and over-temperature conditions derived from ADC sampling. Peripheral Pin Select optimizes pin assignment so hall inputs, UART debug, and PWM outputs coexist on 28 pins. The industrial -40C to +85C range tolerates motor-adjacent mounting, and Microchip's motor-control application notes for the dsPIC33FJ MC family shorten time to market.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ32MC102T-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ32MC102T-E/SS | DSPIC33FJ32MC102-I/SS | DSPIC33FJ12MC202-I/SS | DSPIC33FJ16GP102T-I/SS |
|---|---|---|---|---|---|
| Package | 28-SSOP (R-PDSO-G28), 5.30 mm | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 32 KB (11K x 24) | 32 KB | 32 KB | 12 KB | 16 KB |
| RAM | 2 KB | 2 KB | 2 KB | 1 KB | 2 KB |
| Performance | 16 MIPS at 32 MHz | 16 MIPS at 32 MHz | 16 MIPS at 32 MHz | 16 MIPS at 32 MHz | 16 MIPS at 32 MHz |
| Temperature Range | -40C to +85C (-I) | -40C to +125C (-E) | -40C to +85C (-I) | -40C to +85C (-I) | -40C to +85C (-I) |
| Peripheral Focus | Motor control (MCPWM, CTMU, PPS) | Motor control (MCPWM, CTMU, PPS) | Motor control (MCPWM, CTMU, PPS) | Motor control (reduced) | General purpose (no MCPWM) |
| Packaging | Tape & Reel (T prefix) | Tape & Reel | Tube / Tray | Tube / Tray | Tape & Reel |
Key Differentiators
- 32KB FLASH in a 28-pin footprint (vs DSPIC33FJ12MC202-I/SS)
- Extended temperature option exists (vs DSPIC33FJ32MC102T-E/SS)
- Dedicated motor-control peripherals (vs DSPIC33FJ16GP102T-I/SS)
Design Notes
Route the PGECx/PGEDx ICSP programming pins to a 5-pin header on every production board. The Microchip datasheet recommends keeping trace length between the ICSP connector and the device as short as possible to ensure reliable programming and debugging with PICkit/ICD tools. Also connect the metal pad under the package to VSS externally per the datasheet layout note, which improves grounding and EMI behavior at no cost.
Decouple each VDD pin pair with 0.1uF ceramic capacitors placed within 5mm of the pins, plus one 4.7uF-10uF bulk capacitor near the device. Separate AVDD from digital VDD with an RC filter (for example 10 ohm + 0.1uF) so ADC and CTMU accuracy is not degraded by digital switching noise - important when sampling motor phase currents. Tie AVSS directly to a clean analog ground island.
Use Peripheral Pin Select (PPS) deliberately before routing: lock the final PPS mapping in firmware configuration first, then route MCPWM outputs away from sensitive analog traces and keep PWM-to-gate-driver runs short and twisted with their returns. On a 28-pin device, sharing analog inputs (AN0-AN14) and RP pins forces trade-offs, so build a pin-budget spreadsheet during schematic capture rather than during layout.
The dsPIC33FJ family is a 3.3V device - its I/O is not 5V-tolerant, unlike PIC18 parts it may replace. Design level shifting for any 5V logic. Additionally, note that document 70000652f is a summary datasheet: full register and electrical details live in the dsPIC33FJ Family Reference Manual sections, so do not design to the summary alone.
Compliance Information
Microchip standard industrial-grade dsPIC33FJ parts in this package family are produced lead-free and RoHS-compliant per distributor catalog categorization; formal declarations are available from Microchip's product page per date code. REACH and halogen-free status not stated in the provided data.
