DSPIC33FJ32GP101-I/P - 16-Bit 16MIPS DSC, 32KB Flash | Microchip
MPN: DSPIC33FJ32GP101-I/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.42 | $5.42 |
| 10 | $4.95 | $49.50 |
| 100 | $4.44 | $444.00 |
| 500 | $4.02 | $2,010.00 |
| 1,000 | $3.63 | $3,630.00 |
DSPIC33FJ32GP101-I/P 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. Within the power management hierarchy, the DSC sits above a basic MCU: it adds DSP-class multiply-accumulate instructions, dual operand fetch, and high-resolution PWM and ADC peripherals, making it a power-management-class mixed-signal device for control loops and signal conditioning.
Key features include 16 MIPS sustained performance from the dsPIC33F core, a 10-bit ADC supporting up to 1.1 Msps sampling with up to 6 external channels, two comparators, a 4-bit DAC for comparator references, and peripheral pin select (PPS) that remaps digital functions across RPn pins for maximum layout flexibility. Five 5V-tolerant input pins and in-circuit serial programming (ICSP) simplify board bring-up.
Architecturally, the dsPIC33F executes most instructions in a single cycle with a 24-bit instruction word, hardware DSP multiply-accumulate, and two address generation units. The internal fast RC oscillator with PLL removes the need for an external crystal in many designs, while seven timer resources support capture, compare, and real-time tasks.
Typical applications include digital power supplies and lighting control, sensor signal processing and filtering, closed-loop motor and actuator control, and portable instrumentation where the through-hole PDIP package eases prototyping and low-volume assembly.
Design consideration: the device operates from a 3.0V to 3.6V supply; the metal pad underneath the PDIP is not connected but the datasheet recommends tying it externally to VSS, and all VDD/VSS pairs must be decoupled with 0.1 uF ceramics for reliable ICSP programming.
This page synthesizes distributor pricing, drop-in alternatives within the dsPIC33F family, pinout detail, and practical design notes not found in a single manufacturer datasheet page.
Drop-in alternatives for DSPIC33FJ32GP101-I/P — 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 DSPIC33FJ32GP101-I/P (same form factor and footprint) — differing in Mounting Type, Comparators, Core Architecture, Operating Temperature, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ12GP201-E/P
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ12MC201-E/P
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.58 / Unit
View Datasheet →DSPIC33FJ16MC101-E/P
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.38 / Unit
View Datasheet →DSPIC33FJ16GP101-E/P
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32GP101-E/P
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32GP101-I/P Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33F DSC |
| Max CPU Speed | 16 MIPS (32 MHz) |
| Program Memory | 32 KB (11K x 24) Flash |
| SRAM | 2 KB |
| Supply Voltage | 3.0 V to 3.6 V |
| ADC Resolution | 10-bit |
| ADC Sampling Rate | 1.1 Msps |
| ADC Channels | 6 |
| Comparators | 3 |
| DAC Outputs | 1 (4-bit, comparator reference) |
| Timers | 7 timer resources |
| PWM Time Bases | 2 |
| Output Compare Channels | 3 |
| USB Interface | None |
| Package | 18-PDIP (through-hole) |
| Mounting Type | Through Hole |
| Operating Temperature | -40C to +85C (I grade) |
| Programming Interface | ICSP (PGECx/PGEDx pairs) |
| 5V Tolerant Input Pins | 5 |
DSPIC33FJ32GP101-I/P Pin Configuration
| Pin 1 | MCLR — Master clear reset input (active low), programming voltage pin during ICSP |
| Pin 2 | AN0/VREF+/CN2/RB0 — Analog input 0 / ADC positive voltage reference / change notification / port B bit 0 |
| Pin 3 | AN1/VREF-/CN3/RB1 — Analog input 1 / ADC negative voltage reference / change notification / port B bit 1 |
| Pin 4 | AN2/SS1/CN4/RB2 — Analog input 2 / SPI slave select 1 / change notification / port B bit 2 |
| Pin 5 | AN3/INDX/CN5/RB3 — Analog input 3 / quadrature encoder index input / change notification / port B bit 3 |
| Pin 6 | VSS — Ground reference |
| Pin 7 | OSC1/CLKI/RC12 — Crystal oscillator input / external clock input / port C bit 12 |
| Pin 8 | OSC2/CLKO/RC15 — Crystal oscillator output / clock output / port C bit 15 |
| Pin 9 | VDD — Positive supply (3.0 V to 3.6 V) |
| Pin 10 | PGEC1/AN4/C1IN-/RP1/RF1 — ICSP clock pair 1 / analog input 4 / comparator 1 inverting input / remappable RP1 / port F bit 1 |
| Pin 11 | PGED1/AN5/C1IN+/RP0/RF0 — ICSP data pair 1 / analog input 5 / comparator 1 non-inverting input / remappable RP0 / port F bit 0 |
| Pin 12 | AN6/RP2/RF2 — Analog input 6 / remappable peripheral RP2 / port F bit 2 |
| Pin 13 | AN7/RP3/RF3 — Analog input 7 / remappable peripheral RP3 / port F bit 3 |
| Pin 14 | RP4/RF4 — Remappable peripheral RP4 / port F bit 4 |
| Pin 15 | RP5/RF5 — Remappable peripheral RP5 / port F bit 5 |
| Pin 16 | RP6/RF6 — Remappable peripheral RP6 / port F bit 6 |
| Pin 17 | RP7/RF7 — Remappable peripheral RP7 / port F bit 7 |
| Pin 18 | VSS — Ground reference |
Typical Applications
DSPIC33FJ32GP101-I/P is suitable for 6 applications: Digital Power Supply Control, Sensor Signal Processing and Filtering, Motor and Actuator Control, Portable Instrumentation and Prototyping, Industrial Control Nodes, Lighting and Ballast Control.
Digital Power Supply Control
The DSPIC33FJ32GP101-I/P fits digital power conversion because Microchip designed the dsPIC33F family to execute high-speed precision digital control loops. The 16 MIPS core with single-cycle MAC instructions closes voltage- or current-mode loops at switching frequencies typical of DC-DC converters, while the 10-bit ADC sampling at up to 1.1 Msps provides the loop bandwidth headroom needed for transient response. Three on-chip comparators with a 4-bit DAC reference enable fast hardware-based overcurrent protection independent of software latency, a critical reliability feature in power stages. In use, the ADC samples the feedback divider, the control law executes as an FIR/IIR filter in DSP RAM, and a PWM time base drives the power switch through an output-compare channel. The trade-off versus a dedicated digital power controller is software development effort; versus a general MCU, the dsPIC33F adds deterministic DSP throughput at similar cost.
Recommended
Sensor Signal Processing and Filtering
For sensor conditioning, the DSPIC33FJ32GP101-I/P combines a 10-bit, 1.1 Msps ADC with hardware DSP multiply-accumulate, allowing oversampling, averaging, and digital filtering that raise effective resolution beyond the raw 10 bits. Six analog input channels with VREF+/VREF- capability on RB0/RB1 support ratiometric measurements against external precision references such as the MCP1541. The 2 KB SRAM holds filter state for multi-channel FIR/IIR pipelines, and Peripheral Pin Select lets the designer place a UART or SPI interface on whichever RPn pin suits the board layout. Typical deployments include strain-gauge and thermocouple front ends, where the on-chip comparators provide threshold alarms while the DSP path computes linearization. Compared with an MCU-plus-codec solution, the dsPIC33F removes external filter components; compared with a pure MCU, it delivers roughly 16 MIPS of deterministic filtering throughput at comparable cost and 3.3V supply.
Recommended
Motor and Actuator Control
The DSPIC33FJ32GP101-I/P supports embedded motor and actuator control through two PWM time bases, three output-compare channels, and an INDX (quadrature index) input on pin 5 that interfaces directly with encoder feedback. The 16 MIPS core executes field-oriented or trapezoidal commutation math with hardware MAC acceleration, while the 1.1 Msps ADC samples phase currents fast enough for cycle-by-cycle current limiting. For low-complexity drives the on-chip comparators implement hardware overcurrent trips. In use, one PWM time base generates the switching pattern, output-compares gate dead-time windows, and the encoder inputs update position at up to the timer clock rate. Note that for multi-phase motor control requiring many complementary PWM outputs, the dsPIC33FJ MC series variants (e.g., DSPIC33FJ16MC101-E/P) in the same 18-PDIP footprint offer a peripheral-mapping upgrade path without PCB redesign.
Recommended
Portable Instrumentation and Prototyping
The 18-pin PDIP through-hole package makes the DSPIC33FJ32GP101-I/P exceptionally convenient for bench prototypes, university labs, and low-volume instruments where sockets and hand assembly are preferred over reflow soldering. The internal fast RC oscillator with PLL eliminates the external crystal in applications tolerating its accuracy, reducing BOM count to essentially decoupling capacitors for the simplest builds. ICSP programming through any PGECx/PGEDx pair works with low-cost MPLAB SNAP tools, so firmware iteration requires only a 5-wire header. With 32 KB Flash, the device holds substantial application code including display drivers and communication stacks; the 5V-tolerant input pins simplify interfacing with legacy TTL-level sensor outputs through appropriate series resistors. Designs prototyped on this PDIP part migrate to the same die in SOIC (DSPIC33FJ32GP101-I/SO) for production without firmware changes.
Recommended
Industrial Control Nodes
In factory and building automation nodes, the DSPIC33FJ32GP101-I/P provides local control and signal conditioning with a -40C to +85C industrial temperature rating. Peripheral Pin Select allows UART, SPI, and I2C functions to be mapped to whichever RPn pins reach the connector, simplifying routing in dense control boards; a UART bridged to an external CAN or RS-485 transceiver such as the MCP2551 links the node to plant networks. Three external interrupt sources, of which two are remappable, handle fast limit-switch or interlock events with deterministic latency. The 2 KB SRAM accommodates Modbus-style register frames, and the 32 KB Flash retains application plus bootload code for field updates via in-application programming. Design consideration: the 3.0-3.6V supply and 5V-tolerant-but-not-5V-drive I/O require level translation or 3.3V-native transceivers when interfacing legacy 5V PLC I/O racks.
Recommended
Lighting and Ballast Control
Digital lighting control exploits the DSPIC33FJ32GP101-I/P's combination of PWM time bases, 1.1 Msps current-sense ADC, and hardware comparators. The controller regulates LED current or HID lamp power by adjusting PWM duty in a closed loop sampled at high rate, while the 4-bit DAC driving a comparator reference sets the cycle-by-cycle overcurrent trip threshold in hardware - essential protection for series LED strings. The 16 MIPS DSP core also supports power-factor-correction filtering in offline topologies. Because ballast designs are cost-sensitive, 32 KB Flash typically covers PFC plus dimming communication (DALI-style UART protocols) without an external memory device. During prototyping the PDIP package allows rapid analog tweaks; for production volume, Microchip's GS-series digital power parts (e.g., DSPIC33FJ16GS504) provide dedicated SMPS PWM peripherals while retaining the same dsPIC33 code base, easing firmware reuse across the product family.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ32GP101-I/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ12GP201-E/P | DSPIC33FJ12MC201-E/P | DSPIC33FJ16MC101-E/P | DSPIC33FJ16GP101-E/P | DSPIC33FJ32GP101-E/P |
|---|---|---|---|---|---|---|
| Package | 18-PDIP | 18-PDIP - same | 18-PDIP - same | 18-PDIP - same | 18-PDIP - same | 18-PDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 32 KB | 12 KB | 12 KB | 16 KB | 16 KB | 32 KB |
| SRAM | 2 KB | 1 KB | 1 KB | 2 KB | 2 KB | 2 KB |
| CPU Performance | 16 MIPS | 16 MIPS | 16 MIPS | 16 MIPS | 16 MIPS | 16 MIPS |
| Operating Temperature | -40C to +85C (I) | -40C to +125C (E) | -40C to +125C (E) | -40C to +125C (E) | -40C to +125C (E) | -40C to +125C (E) |
| Peripheral Series Mapping | General Purpose (GP) | GP | MC (motor control) | MC (motor control) | GP | GP |
| 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 | 3.0 V to 3.6 V |
Key Differentiators
- Largest Flash in the 18-PDIP GP1 family (vs DSPIC33FJ16GP101-E/P)
- General-purpose analog mapping with VREF pins (vs DSPIC33FJ16MC101-E/P)
- Trade-off: industrial grade only (vs DSPIC33FJ32GP101-E/P)
Design Notes
Decouple every VDD pin with a 0.1 uF ceramic capacitor placed within a few millimeters of the pin, plus one 4.7-10 uF bulk capacitor per board. Per the Microchip datasheet, all VDD and VSS pins must be connected for the device to program and run reliably - the datasheet also recommends tying the unconnected metal pad beneath the device to VSS externally. Supply is 3.0-3.6V only; do not exceed 3.6V, and remember I/O is 3.3V logic (5V tolerant on 5 input pins, not 5V driving).
ICSP requires matching PGECx/PGEDx pairs: if PGEC2 is used for ICSPCLK, PGED2 must carry ICSPDAT. Crossing pairs causes silent programming failures. Reserve header access to at least one PGEC/PGED pair plus MCLR on the PCB. After configuration, MCLR must be held low during power-up ramp for a clean reset. If the internal FRC oscillator with PLL is used, verify CLKI/OSC2 pins are configured accordingly or left as port pins.
Use Peripheral Pin Select deliberately: assign high-speed or analog-adjacent functions away from pins shared with ADC inputs (RB0-RB3), because analog pins multiplexed as digital outputs inject switching noise into adjacent ADC channels. Route crystal oscillator traces short and guard them with ground when using an external crystal on OSC1/OSC2. For motor or power applications, keep ADC sense routing differential-ish and star-grounded to the VSS pin to preserve 10-bit accuracy at 1.1 Msps.
Compliance Information
RoHS/lead-free status inferred from the -I/P standard commercial grade offered by Microchip for lead-free PDIP assembly; REACH and conflict-minerals declarations were not stated in the provided data.
