DSPIC33FJ32GP102-E/SO - 16-Bit DSC 32KB Flash 28-SOIC | Microchip
MPN: DSPIC33FJ32GP102-E/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.08 | $30.80 |
| 100 | $2.74 | $274.00 |
| 500 | $2.46 | $1,230.00 |
| 1,000 | $2.19 | $2,190.00 |
DSPIC33FJ32GP102-E/SO Overview
A digital signal controller (DSC) is a hybrid device that merges the arithmetic engine of a digital signal processor (DSP) - single-cycle multiply-accumulate, barrel shifting, and fractional fixed-point math - with the timers, serial ports, ADC, and interrupt structure of a microcontroller (MCU). In the silicon taxonomy, a DSC sits between a general-purpose MCU and a dedicated DSP: it is a microcontroller with DSP instructions, or equivalently a DSP with MCU peripherals. The dsPIC33F family is Microchip's 16-bit DSC line, and the 'GP' suffix denotes the general-purpose variant of the dsPIC33FJ32GP102.
Key differentiators of the DSPIC33FJ32GP102-E/SO include its 16 MIPs core throughput at 3.3 V, 32 KB Flash with 2 KB SRAM, a 10-bit ADC subsystem, and up to 35 general-purpose I/O pins on the 28-pin SOIC footprint. The 'E' temperature suffix denotes the extended industrial range of -40C to +125C, making the device suitable for thermally demanding embedded designs. The 28-pin SOIC Wide package allows conventional surface-mount assembly without fine-pitch BGA or QFN rework.
The dsPIC33F core executes most instructions in a single cycle and provides hardware support for 16x16-bit multiplication and 32-bit accumulation, which accelerates PID control loops, digital filters, and Park/Clarke transforms used in field-oriented motor control. On-chip Flash supports in-circuit serial programming and self-programming, enabling field firmware updates.
Typical applications include brushless DC (BLDC) and permanent-magnet synchronous motor (PMSM) control, digital power supplies and DC-DC converters, industrial sensor conditioning, and automotive body electronics. The extended temperature rating and 3.3 V operation fit 24 V industrial buses and 12 V automotive rails with appropriate regulation.
When designing with this device, keep the analog supply and ADC reference decoupled close to the pins, and reserve the SOIC-28 land pattern for adequate thermal relief. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ32GP102-E/SO — 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 DSPIC33FJ32GP102-E/SO (same form factor and footprint) — differing in External Interrupts, I/O Pins, Package, Program Memory (Flash), Mounting Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ32GP102-I/SO
✅ Drop-In✓ In Stock
$2.98 / Unit
View Datasheet →DSPIC33FJ32GP101-E/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32GP104-E/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ16GP102-E/SO
✅ Drop-In✓ In Stock
$1.86 / Unit
View Datasheet →DSPIC33FJ32GP102-E/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33F RISC DSC |
| Maximum CPU Speed | 16 MIPs |
| Program Memory (Flash) | 32 KB (11K x 24) |
| RAM | 2 KB |
| Supply Voltage | 3.3 V (nominal) |
| Package | 28-pin SOIC Wide (SOIC-28) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40C to +125C (E grade) |
| I/O Pins | Up to 35 general-purpose I/O |
| ADC Resolution | 10-bit |
| I/O Sink/Source Current | 10 mA or 6 mA pin-specific (up to 16 mA / 12 mA non-standard VOH) |
| 5V Tolerant Pins | Up to 20 |
| External Interrupts | Three (two remappable) |
| Open-Drain / Pull-up Pins | Selectable |
| Programming Interface | In-Circuit Serial Programming (ICSP) |
| Product Family | dsPIC33FJ32GP102 (General Purpose) |
DSPIC33FJ32GP102-E/SO Pin Configuration
| Pin 1 | MCLR — Master clear (reset) input, active low |
| Pin 2 | EMUD2/AN0/RB0 — Emulator data / analog input 0 / digital I/O RB0 |
| Pin 3 | AN1/RB1 — Analog input 1 / digital I/O RB1 |
| Pin 4 | AN2/RB2 — Analog input 2 / digital I/O RB2 |
| Pin 5 | AN3/RB3 — Analog input 3 / digital I/O RB3 |
| Pin 6 | AN4/RB4 — Analog input 4 / digital I/O RB4 |
| Pin 7 | AN5/RB5 — Analog input 5 / digital I/O RB5 |
| Pin 8 | VSS — Ground |
| Pin 9 | OSC1/CLKI/AN6/RB6 — Primary oscillator input / clock input / analog input 6 / digital I/O RB6 |
| Pin 10 | OSC2/CLKO/AN7/RB7 — Primary oscillator output / clock output / analog input 7 / digital I/O RB7 |
| Pin 11 | VDD — Positive supply (3.3 V) |
| Pin 12 | PGED1/AN8/RB8 — Programming data / analog input 8 / digital I/O RB8 |
| Pin 13 | PGEC1/AN9/RB9 — Programming clock / analog input 9 / digital I/O RB9 |
| Pin 14 | AN10/RB10 — Analog input 10 / digital I/O RB10 |
| Pin 15 | AN11/RB11 — Analog input 11 / digital I/O RB11 |
| Pin 16 | AN12/RB12 — Analog input 12 / digital I/O RB12 |
| Pin 17 | AN13/RB13 — Analog input 13 / digital I/O RB13 |
| Pin 18 | AN14/RB14 — Analog input 14 / digital I/O RB14 |
| Pin 19 | AN15/RB15 — Analog input 15 / digital I/O RB15 |
| Pin 20 | VSS — Ground |
| Pin 21 | U1RX/SDI1/RF2 — UART1 receive / SPI1 data in / digital I/O RF2 |
| Pin 22 | U1TX/SDO1/RF3 — UART1 transmit / SPI1 data out / digital I/O RF3 |
| Pin 23 | U1CTS/SCK1/RF4 — UART1 clear-to-send / SPI1 clock / digital I/O RF4 |
| Pin 24 | U1RTS/SS1/RF5 — UART1 request-to-send / SPI1 slave select / digital I/O RF5 |
| Pin 25 | VDD — Positive supply (3.3 V) |
| Pin 26 | PGED2/EMUD1/RF6 — Programming data / emulator data / digital I/O RF6 |
| Pin 27 | PGEC2/EMUC1/RF7 — Programming clock / emulator clock / digital I/O RF7 |
| Pin 28 | AVDD — Analog positive supply |
Typical Applications
DSPIC33FJ32GP102-E/SO is suitable for 6 applications: Brushless DC and PMSM Motor Control, Digital Power Supply and DC-DC Conversion, Industrial Sensor Signal Conditioning, Automotive Body and Comfort Electronics, Embedded Audio and Voice Processing, Portable and Battery-Powered Instruments.
Brushless DC and PMSM Motor Control
The DSPIC33FJ32GP102-E/SO fits field-oriented control (FOC) of brushless DC and permanent-magnet synchronous motors because its 16 MIPs dsPIC33F core executes single-cycle 16x16-bit multiply-accumulate, which is the arithmetic primitive behind Park and Clarke transforms and PID current loops. Running at 3.3 V with 32 KB Flash and 2 KB RAM, the device holds the FOC algorithm, space-vector PWM tables, and fault handlers on chip. The 10-bit ADC samples phase currents and DC-bus voltage, while the extended -40C to +125C rating supports motor-drive enclosures that run hot. In a typical three-phase inverter, the DSC runs the current loop at 10-20 kHz and the speed loop at 1 kHz, with the PWM peripheral driving the gate driver. The trade-off versus a dedicated motor-control SoC is that the designer must implement the control loop in firmware, but the result is full flexibility in tuning and sensorless observer design.
Recommended
Digital Power Supply and DC-DC Conversion
The DSPIC33FJ32GP102-E/SO is well suited to digitally controlled DC-DC converters and AC-DC power stages because the dsPIC33F core closes the voltage and current loops in firmware, replacing analog compensators with programmable PID and 2P2Z filters. Its 16 MIPs throughput and single-cycle MAC let the loop run at switching frequencies in the tens of kilohertz while the 10-bit ADC digitizes output voltage and inductor current. The 3.3 V supply matches modern gate-driver logic, and the 28-pin SOIC Wide package keeps the controller compact on the power board. The extended temperature rating covers the thermal environment near the switching stage. Compared with an analog PWM controller, the DSC adds firmware complexity but enables adaptive control, telemetry, and non-linear response that fixed analog loops cannot provide.
Recommended
Industrial Sensor Signal Conditioning
The DSPIC33FJ32GP102-E/SO handles industrial sensor conditioning where raw transducer signals require filtering, linearization, and scaling before transmission. Its DSP instructions implement FIR and IIR filters in real time, while the 10-bit ADC digitizes bridge, thermocouple, or current-loop inputs. The 3.3 V core with up to 20 five-volt-tolerant pins allows direct interface to legacy 5 V sensor front-ends without level shifters, and the -40C to +125C rating suits factory-floor cabinets. In a typical 4-20 mA loop transmitter, the DSC filters the sense voltage, applies calibration coefficients stored in Flash, and drives the output stage. The trade-off is that a 10-bit ADC limits resolution compared with external 16-bit converters, so high-precision instrumentation may need an external ADC on the serial bus.
Recommended
Automotive Body and Comfort Electronics
The DSPIC33FJ32GP102-E/SO suits automotive body and comfort modules such as window lifters, seat controllers, and HVAC flap actuators because its extended -40C to +125C rating covers cabin and under-dash thermal extremes. The 16 MIPs core runs motor-control loops for brushed and BLDC actuators, while the 28-pin SOIC Wide package fits space-constrained modules. Up to 20 five-volt-tolerant pins interface directly with legacy 5 V switches and sensors, reducing bill-of-materials cost. The device operates from a regulated 3.3 V rail derived from the 12 V automotive bus. Designers should confirm AEC-Q100 qualification with Microchip before using the part in safety-critical functions, since the available data does not confirm automotive qualification for this specific ordering code.
Recommended
Embedded Audio and Voice Processing
The DSPIC33FJ32GP102-E/SO can perform embedded audio and voice-band processing because its dsPIC33F core executes multiply-accumulate operations that implement biquad filters, gain control, and simple echo cancellation in real time. With 32 KB Flash and 2 KB RAM, the device stores filter coefficient tables and short sample buffers for voice-band signals. The 10-bit ADC digitizes microphone inputs, and the serial ports stream processed samples to a codec or DAC. At 16 MIPs, the core handles a few biquad sections per sample at 8-16 kHz voice rates, which is adequate for intercom and voice-trigger applications but not for wideband audio. The trade-off versus a dedicated audio DSP is limited MIPS and RAM, so complex algorithms may require a higher-tier dsPIC33 or a dedicated codec.
Recommended
Portable and Battery-Powered Instruments
The DSPIC33FJ32GP102-E/SO fits portable instruments that need on-board signal processing at low power, such as handheld meters, medical monitors, and field data loggers. The 3.3 V core and 16 MIPs throughput balance compute against current draw, and the 28-pin SOIC Wide package keeps the PCB small for handheld enclosures. The 10-bit ADC digitizes sensor inputs, the DSP instructions filter and scale readings, and the serial ports drive displays or wireless modules. Flash self-programming supports field firmware updates without removing the device. The trade-off is that the 10-bit ADC and 2 KB RAM limit high-resolution, high-channel-count designs, so multi-channel precision instruments may need an external multiplexed ADC and a larger dsPIC33 variant.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ32GP102-E/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ32GP102-I/SO | DSPIC33FJ32GP101-E/SO | DSPIC33FJ32GP104-E/SO | DSPIC33FJ16GP102-E/SO |
|---|---|---|---|---|---|
| Package | 28-pin SOIC Wide (SOIC-28) | 28-pin SOIC Wide - same | 28-pin SOIC Wide - same | 28-pin SOIC Wide - same | 28-pin SOIC Wide - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Speed | 16 MIPs | 16 MIPs | 16 MIPs | 16 MIPs | 16 MIPs |
| Flash Program Memory | 32 KB (11K x 24) | 32 KB (11K x 24) | 32 KB (11K x 24) | 32 KB (11K x 24) | 16 KB (-50%) |
| RAM | 2 KB | 2 KB | 2 KB | 2 KB | 1 KB (-50%) |
| Temperature Grade | -40C to +125C (E) | -40C to +85C (I) | -40C to +125C (E) | -40C to +125C (E) | -40C to +125C (E) |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| ADC Resolution | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit |
| 5V Tolerant Pins | Up to 20 | Up to 20 | Up to 20 | Up to 20 | Up to 20 |
Key Differentiators
- Extended temperature rating (vs DSPIC33FJ32GP102-I/SO)
- Double the Flash of the 16 KB variant (vs DSPIC33FJ16GP102-E/SO)
- DSP arithmetic at MCU power (vs PIC18F24K42-I/SS)
Design Notes
Decouple VDD and AVDD with 0.1 uF ceramic capacitors placed within 5 mm of pins 11, 25, and 28, plus a 10 uF bulk capacitor on the 3.3 V rail. The dsPIC33F ADC draws current in bursts during conversion, so a dedicated AVDD filter (ferrite bead plus 0.1 uF) reduces noise coupling into the 10-bit converter. Keep the analog and digital ground returns joined at a single point under the device to avoid ground loops.
The 28-pin SOIC Wide land pattern requires adequate thermal relief on the ground pins (8 and 20) for the extended-temperature rating. Use at least 0.5 mm trace width for VDD and VSS, and route the ICSP programming pins (PGED1/PGEC1 on pins 12/13) to an accessible header for field firmware updates. Keep the oscillator pins 9 and 10 traces short and guard them with ground to minimize clock jitter.
Do not exceed the 3.3 V nominal supply on VDD or AVDD; the device is not 5 V powered even though up to 20 I/O pins are 5 V tolerant. Confirm that the -E/SO extended-temperature grade is actually required before ordering, since the -I/SO variant is functionally identical and typically lower cost. Estimated: at 16 MIPs and 3.3 V, core current is in the low tens of milliamps, so a 100 mA LDO is adequate for the controller alone; add margin for I/O and ADC loading.
Compliance Information
Compliance data was not present in the verified web data for this ordering code. One distributor listing describes the dsPIC automotive series as AEC-Q100 certified, but this is not confirmed for the DSPIC33FJ32GP102-E/SO specifically; verify with Microchip before automotive use.
