DSPIC33FJ32MC101-E/P - 16-Bit DSC 32KB Flash 20-PDIP | Microchip
MPN: DSPIC33FJ32MC101-E/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.85 | $4.85 |
| 10 | $4.4 | $44.00 |
| 100 | $3.95 | $395.00 |
| 500 | $3.55 | $1,775.00 |
| 1,000 | $3.2 | $3,200.00 |
DSPIC33FJ32MC101-E/P Overview
A digital signal controller combines the computational architecture of a digital signal processor (DSP) with the peripheral set and ease of use of a microcontroller (MCU). Within the power management hierarchy, the DSC sits above general-purpose MCUs for control-loop tasks, offering hardware multiply-accumulate (MAC), barrel shifting, and DSP instruction support while retaining MCU-style flash, interrupt, and peripheral programming models.
Key features include the dsPIC33F core at 16 MIPs, motor control PWM (MCPWM) outputs, three analog comparators, a Charge Time Measurement Unit (CTMU), an RTCC real-time clock and calendar, 6-channel 10-bit ADC, and Peripheral Pin Select (PPS) for remapping digital peripherals onto 15 available I/O pins. Connectivity spans I2C, SPI, UART/USART, IrDA, and LINbus. The -E suffix denotes an extended temperature rating of -40C to +125C, and the family is AEC-Q100 automotive capable.
Architecturally, the device uses a modified Harvard 16-bit core with DSP engine, supporting C compiler development through Microchip MPLAB X IDE and XC16 compiler. Flash self-programming enables field firmware updates, while the 16 MIPs rate supports execution of advanced motor-control algorithms such as field-oriented control (FOC) on small pulse-width-modulated (PWM) drives.
Typical applications include brushless DC (BLDC) and permanent-magnet synchronous motor control, power-factor-correction converters, electronic ballasts, and low-pin-count sensor interfaces using CTMU-based capacitive touch measurement.
Design consideration: the 20-pin PDIP is ideal for prototyping and through-hole assembly, but the 1KB RAM limits complex control stacks - size buffers carefully.
This page synthesizes distributor pricing, drop-in same-package alternatives, pinout data, and design guidance not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ32MC101-E/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 DSPIC33FJ32MC101-E/P (same form factor and footprint) — differing in Operating Temperature, Package, Core Architecture, Mounting Type, MSL Level.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ16MC101-E/P
✅ Drop-In✓ In Stock
$3.38 / Unit
View Datasheet →DSPIC33FJ12MC201-E/P
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.58 / Unit
View Datasheet →DSPIC33FJ12MC201-I/SS
✅ Drop-In✓ In Stock
$2.46 / Unit
View Datasheet →DSPIC33FJ32GP101-I/P
✅ Drop-In✓ In Stock
$3.63 / Unit
View Datasheet →DSPIC33FJ16GP101-E/SS
✅ Drop-In✓ In Stock
$2.3 / Unit
View Datasheet →DSPIC33FJ32MC101-E/P Maximum Ratings & Electrical Characteristics
| Core Processor | dsPIC33F 16-bit |
| Core Size | 16-bit |
| Speed (Performance) | 16 MIPs |
| Program Memory Size | 32KB (11K x 24) FLASH |
| RAM Size | 1K x 16 |
| Number of I/O | 15 |
| Data Converters | A/D 6x10-bit |
| Connectivity | I2C, SPI, UART/USART, IrDA, LINbus |
| Peripherals | MCPWM, CTMU, comparators, RTCC, PPS |
| Voltage - Supply | 3 V to 3.6 V |
| Operating Temperature | -40C to +125C (E grade) |
| Package | 20-PDIP (0.300 in, 7.62 mm) |
| Mounting Type | Through Hole |
| Oscillator Frequency | 16 MHz |
| Qualification | AEC-Q100 (automotive capable) |
| Series | dsPIC 33F (MC - Motor Control) |
| External Interrupts | 3 (two remappable) |
| I/O Sink/Source Current | Up to 16 mA or 12 mA (non-standard VOH pins) |
DSPIC33FJ32MC101-E/P Pin Configuration
| Pin 1 | MCLR — Master clear reset (active low), programming voltage input |
| Pin 2 | AN0/VREF+/CN2/RB0 — Analog input 0 / ADC positive reference / change notification / port B bit 0 |
| Pin 3 | AN1/VREF-/CN3/RB1 — Analog input 1 / ADC negative reference / change notification / port B bit 1 |
| Pin 4 | AN2/SS1/CN4/RB2 — Analog input 2 / SPI slave select / change notification / port B bit 2 |
| Pin 5 | AN3/INDX/CN5/RB3 — Analog input 3 / QEI index / change notification / port B bit 3 |
| Pin 6 | VSS — Ground reference |
| Pin 7 | OSC1/CLKI/CN6/RA2 — Oscillator crystal input / external clock input |
| Pin 8 | OSC2/CLKO/RC15 — Oscillator crystal output / clock output |
| Pin 9 | VDD — Positive supply (3 V to 3.6 V) |
| Pin 10 | RP0/RF0 — Remappable peripheral pin 0 / port F bit 0 |
| Pin 11 | RP1/RF1 — Remappable peripheral pin 1 / port F bit 1 |
| Pin 12 | RP2/RF2 — Remappable peripheral pin 2 / port F bit 2 |
| Pin 13 | RP3/RF3 — Remappable peripheral pin 3 / port F bit 3 |
| Pin 14 | VSS — Ground reference |
| Pin 15 | SOSCI/RP4/CN1/RB4 — Secondary oscillator input / remappable pin 4 / change notification / port B bit 4 |
| Pin 16 | SOSCO/T1CK/RP5/CN0/RB5 — Secondary oscillator output / Timer1 clock / remappable pin 5 / port B bit 5 |
| Pin 17 | VDD — Positive supply (3 V to 3.6 V) |
| Pin 18 | PGD/EMUD1/RP6/CN8/RB6 — In-circuit debug data / remappable pin 6 / port B bit 6 |
| Pin 19 | PGC/EMUC1/RP7/CN9/RB7 — In-circuit debug clock / remappable pin 7 / port B bit 7 |
| Pin 20 | VDD — Positive supply (3 V to 3.6 V) |
Typical Applications
DSPIC33FJ32MC101-E/P is suitable for 6 applications: BLDC Motor Control, Power Factor Correction Converters, Capacitive Touch Interfaces, Embedded Prototyping and Education, Industrial Sensor Nodes, Automotive Subsystem Control.
BLDC Motor Control
The DSPIC33FJ32MC101-E/P fits brushless DC (BLDC) motor drives because its motor-control PWM (MCPWM) module generates complementary outputs with hardware dead-time insertion, while three analog comparators enable sensorless back-EMF commutation and cycle-by-cycle overcurrent protection. Operating at 16 MIPs with a DSP engine, the core executes trapezoidal or sinusoidal commutation algorithms within tight control-loop deadlines, and the 6-channel 10-bit ADC samples phase currents for closed-loop torque control. In a typical circuit, the MCPWM drives a 3-phase gate-driver IC or MOSFET bridge directly, with the ADC synchronized to PWM triggers for low-noise current sampling. The trade-off is the 1KB RAM, which limits the complexity of field-oriented control implementations - sensorless six-step commutation is the natural fit at this memory class.
Recommended
Power Factor Correction Converters
Switched-mode power conversion such as power factor correction (PFC) benefits directly from the DSPIC33FJ32MC101-E/P parameter set: 16 MIPs of 16-bit DSP throughput supports average-current-mode control loops at switching frequencies in the tens of kilohertz with margin, and the MCPWM module provides the PWM carriers with programmable dead time. The 10-bit ADC, triggered by the PWM, samples inductor current and bus voltage synchronized to the switching period for clean control feedback, while comparators provide fast-cycle current limiting independent of firmware. Placed between the rectified AC input sensing network and the boost-switch gate driver, the controller implements boost or buck PFC in firmware. Because the device is AEC-Q100 capable and rated -40C to +125C, it suits sealed industrial power supplies with elevated ambient temperatures.
Recommended
Capacitive Touch Interfaces
The integrated Charge Time Measurement Unit (CTMU) makes the DSPIC33FJ32MC101-E/P well suited to capacitive touch sensing on low-pin-count products such as appliance control panels and industrial keypads. The CTMU is a precision constant-current source and time measurement peripheral: firmware charges the touch pad through the CTMU and measures charge time via the 10-bit ADC, detecting the capacitance delta caused by a finger. With 15 remappable I/O pins and Peripheral Pin Select (PPS), up to a dozen touch channels can coexist with a UART or SPI link on the same 20-pin package. Typical performance detects touches through 3 mm glass or plastic overlays, and the RTCC peripheral adds time-stamping for panel event logging without a second IC.
Recommended
Embedded Prototyping and Education
The 20-pin PDIP through-hole package is a defining advantage for prototyping, breadboarding, and university lab courses: the 0.300-inch, 7.62 mm lead pitch plugs directly into solderless breadboards and DIP sockets without adapters, unlike SSOP or QFN variants of the same die. Developers use Microchip MPLAB X IDE with the XC16 compiler and an in-circuit debugger (PICkit or ICD) connected to the PGC/PGD pins (19/18) for programming and real-time debugging. The 16 MIPs core, DSP instructions, and PPS remapping let students explore motor control, digital filtering, and serial protocols on one low-cost device. The extended -40C to +125C E-grade rating also means a validated prototype transfers directly to industrial hardware without a temperature-grade change.
Recommended
Industrial Sensor Nodes
In distributed industrial monitoring, the DSPIC33FJ32MC101-E/P serves as a compact sensor node controller: the UART/USART with LINbus and IrDA support, plus I2C and SPI masters, connects digital sensors and field buses, while the 6-channel 10-bit ADC digitizes 0-3.3V analog transducer outputs. The RTCC provides timestamping for event-driven logging, and the CTMU adds capacitance-based level or proximity measurement without external analog front-ends. PPS remapping lets one firmware image adapt to different board wirings, reducing PCB variants. The -40C to +125C operating range covers unheated enclosures and machinery-mount positions, and AEC-Q100-capable qualification supports harsh-environment reliability screening. The 3V to 3.6V supply matches standard LDO rails from 24V industrial buses.
Recommended
Automotive Subsystem Control
Because the dsPIC33FJ32MC101 family is AEC-Q100 automotive capable and this -E suffix version operates from -40C to +125C, the device is appropriate for non-safety-critical automotive subsystem controllers such as auxiliary pump drivers, actuator position control, LIN-bus body nodes, and small BLDC fan or blower drives. The MCPWM module drives gate circuitry for the actuator motor with hardware dead-time protection, comparators supervise current limits against fault conditions in silicon rather than software, and the LINbus-capable UART connects to the vehicle's low-cost body network. Firmware executes at 16 MIPs, sufficient for cascade current/speed loops in actuators. Designers must respect the 3V to 3.6V supply window, typically deriving it from a 5V automotive rail through an automotive-rated LDO with load-dump tolerance.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ32MC101-E/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ16MC101-E/P | DSPIC33FJ12MC201-E/P | DSPIC33FJ32GP101-I/P | DSPIC33FJ16GP101-E/SS |
|---|---|---|---|---|---|
| Package | 20-PDIP (0.300 in) | 20-PDIP - same | 20-PDIP - same | 20-PDIP - same | SSOP-20 - same die, different footprint |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Speed | dsPIC33F 16-bit, 16 MIPs | dsPIC33F 16-bit, 16 MIPs | dsPIC33F 16-bit, 16 MIPs | dsPIC33F 16-bit, 16 MIPs | dsPIC33F 16-bit, 16 MIPs |
| Program FLASH | 32KB (11K x 24) | 16KB (5.4K x 24) | 12KB | 32KB (11K x 24) | 16KB |
| Motor-Control PWM (MCPWM) | Yes | Yes | Yes | No (GP variant) | No (GP variant) |
| Operating Temperature | -40C to +125C (E) | -40C to +125C (E) | -40C to +125C (E) | -40C to +85C (I) | -40C to +125C (E) |
| Supply Voltage | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V |
| Automotive Qualification | AEC-Q100 capable | AEC-Q100 capable | AEC-Q100 capable | Industrial grade (I suffix) | AEC-Q100 capable |
Key Differentiators
- Largest flash in the 20-PDIP MC subfamily (vs DSPIC33FJ16MC101-E/P)
- Dedicated motor-control PWM module (vs DSPIC33FJ32GP101-I/P)
- Extended temperature grade in through-hole (vs DSPIC33FJ32GP101-I/P)
Design Notes
Decouple each VDD pin (9, 17, 20) with 0.1 uF ceramic capacitors placed within 5 mm of the pin, plus one bulk 4.7-10 uF capacitor near the device. The dsPIC33F core draws current transiently at 16 MIPs; supply ripple on VDD couples directly into the ADC references (AN0/AN1 can serve as VREF+/VREF-), degrading 10-bit conversion accuracy. Keep the analog ground return of VSS (pins 6, 14) separate from high-current motor-drive ground until a single star point.
Route PGC (pin 19) and PGD (pin 18) to a 5-pin header for in-circuit serial programming (ICSP) with PICkit/ICD tools, including MCLR (pin 1), VDD, and VSS. Fit a 10K pull-up resistor from MCLR to VDD and leave space for an optional programming-voltage clamp. Provide a footprint for the secondary oscillator crystal (32.768 kHz on SOSCI/SOSCO, pins 15/16) if RTCC timekeeping accuracy is required - the internal FRC oscillator is unsuitable for precision real-time clocking.
Do not exceed the 3.6V absolute maximum supply - unlike PIC18 parts, dsPIC33F is not a 5V device; only specific pins are 5V tolerant per the datasheet. Configure unused remappable pins carefully with PPS: a mis-assigned peripheral map can drive motor bridge outputs into shoot-through. Also remember the 1KB RAM limit - large ADC buffers or FOC control structures will overflow the linker heap; verify the MPLAB X memory gauge during the build, not at runtime.
Compliance Information
Distributor listings describe the dsPIC33FJ32MC101 family as Automotive, AEC-Q100. RoHS/lead-free consistent with current Microchip production; verify via Microchip Material Declaration for lot-specific certificates. REACH and halogen-free status not stated in provided data.
