PIC24EP32MC202T-I/SS - 16-Bit 70 MIPS 32KB Flash MCU | Microchip
MPN: PIC24EP32MC202T-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.85 | $3.85 |
| 10 | $3.42 | $34.20 |
| 100 | $3.01 | $301.00 |
| 500 | $2.7 | $1,350.00 |
| 1,000 | $2.45 | $2,450.00 |
PIC24EP32MC202T-I/SS Overview
A 16-bit microcontroller (MCU) is a single-chip processor whose internal registers, data bus, and ALU operate on 16-bit words, enabling higher computational throughput than 8-bit MCUs while typically consuming less power and code footprint than 32-bit devices. The PIC24EP family sits within the broader PIC microcontroller hierarchy (PIC10/12/16/18 8-bit -> PIC24 16-bit DSC -> PIC32 32-bit), and is specifically classified as a Digital Signal Controller (DSC), pairing a CPU core with DSP-aware instructions and on-chip peripherals aimed at closed-loop, time-critical control. Motor-control MCUs like the PIC24EP add dedicated PWM, op-amps, ADCs, and quadrature encoder interfaces to support FOC and trapezoidal commutation.
Key features include 6 channels of high-speed PWM with 1.04 ns PWM resolution, dual 10-bit 1.1 Msps ADCs with up to 10 S&H channels for synchronized current/voltage sampling, four on-chip op-amps configurable as gain stages for current shunt amplifiers, and a Quadrature Encoder Interface (QEI). The device also offers two I2C, two SPI, two UART, and a Parallel Master Port. With AEC-Q100 qualification available on the extended-temperature -E variant, the family is suited to both industrial and automotive motor drive designs.
The PIC24E core executes most instructions in one cycle and supports DSP-class multiply-accumulate and barrel shifting, which together with the integrated op-amps and high-resolution PWM allows a single chip to execute field-oriented control loops at PWM frequencies of 20 kHz and above without external DSPs. This integration reduces BOM count, PCB area, and firmware complexity in BLDC, PMSM, and stepper drives.
Typical applications include BLDC/PMSM motor drives, low-voltage sensorless fan pumps, HVAC blower control, e-bike and e-scooter controllers, white-goods inverter boards, and small industrial servo drives. Designers value the part for its on-chip op-amps (saving four external amplifiers), 1 ns PWM edge placement, and 70 MIPS deterministic core for tight control loops.
A key design consideration is PCB thermal management under high PWM switching loads with 1 A sink/source on output pins; the SSOP-28 thermal pad should be soldered to a copper pour to keep junction rise modest. Decoupling VDD/VSS with 100 nF plus 4.7 µF bulk capacitors placed within 5 mm of the supply pins is also recommended for stable analog performance.
Drop-in alternatives for PIC24EP32MC202T-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 PIC24EP32MC202T-I/SS (same form factor and footprint) — differing in ADC, Core Architecture, Package, MSL Level, PWM Channels.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24EP32MC202T-E/SS
✅ Drop-In✓ In Stock
$3.78 / Unit
View Datasheet →PIC24EP32MC202-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24EP32MC202-I/MM
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24EP32MC202T-I/MM
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24EP32MC202T-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24EP32MC202-I/SP
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24EP32MC202T-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24E 16-bit DSC (modified Harvard) |
| CPU Performance | 70 MIPS (60 MIPS, 70 MIPS datasheet variants) |
| Program Memory | 32 KB Flash (10.7K x 24 instructions) |
| Data RAM | 2 KB |
| Motor Control PWM RAM | 4 KB dedicated |
| Operating Voltage | 3.0 V to 3.6 V |
| PWM Channels | 6 high-speed outputs, 1.04 ns edge resolution |
| ADC | Dual 10-bit, up to 1.1 Msps, 10 S&H channels |
| On-chip Op-amps | 4 configurable amplifiers for current sensing |
| Encoder Interface | Quadrature Encoder Interface (QEI) |
| Communication | 2x UART, 2x SPI, 2x I2C, Parallel Master Port |
| Timers | 16-bit Timer/Counter modules |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Package | 28-pin SSOP (5.30 mm body) |
| Mounting Type | Surface Mount |
| MSL Level | 1 (unlimited) |
| RoHS Status | Compliant |
PIC24EP32MC202T-I/SS Pin Configuration
| Pin 1 | MCLR — Master Clear (reset) input, drive low to reset device |
| Pin 2 | RP0/PWM1L — Remappable I/O / PWM1 low output |
| Pin 3 | RP1/PWM1H — Remappable I/O / PWM1 high output |
| Pin 4 | RP2/PWM2L — Remappable I/O / PWM2 low output |
| Pin 5 | RP3/PWM2H — Remappable I/O / PWM2 high output |
| Pin 6 | RP4/PWM3L — Remappable I/O / PWM3 low output |
| Pin 7 | AVSS — Analog ground reference |
| Pin 8 | AVDD — Analog power supply (3.0-3.6 V) |
| Pin 9 | OSCI/CLKI — Crystal oscillator input or external clock input |
| Pin 10 | OSCO/CLKO — Crystal oscillator output or clock output |
| Pin 11 | RP5/PWM3H — Remappable I/O / PWM3 high output |
| Pin 12 | RP6/FLTA1 — Remappable I/O / PWM fault input A1 |
| Pin 13 | RP7/FLTA2 — Remappable I/O / PWM fault input A2 |
| Pin 14 | RP8/AN0/CVD0 — Remappable I/O / ADC input AN0 / CVD touch input |
| Pin 15 | RP9/AN1/CVD1 — Remappable I/O / ADC input AN1 / CVD touch input |
| Pin 16 | RP10/AN2 — Remappable I/O / ADC input AN2 |
| Pin 17 | RP11/AN3 — Remappable I/O / ADC input AN3 |
| Pin 18 | VSS — Digital ground reference |
| Pin 19 | VDD — Digital power supply (3.0-3.6 V) |
| Pin 20 | RP12/AN4 — Remappable I/O / ADC input AN4 |
| Pin 21 | RP13/AN5 — Remappable I/O / ADC input AN5 |
| Pin 22 | RP14/AN6 — Remappable I/O / ADC input AN6 |
| Pin 23 | RP15/AN7 — Remappable I/O / ADC input AN7 |
| Pin 24 | RP16/AN8 — Remappable I/O / ADC input AN8 |
| Pin 25 | RP17/AN9 — Remappable I/O / ADC input AN9 |
| Pin 26 | RP18/QEA — Remappable I/O / QEI phase A input |
| Pin 27 | RP19/QEB — Remappable I/O / QEI phase B input |
| Pin 28 | PGED1/PGEC1 — ICSP programming/debug data and clock |
Typical Applications
PIC24EP32MC202T-I/SS is suitable for 7 applications: BLDC / PMSM Motor Control, Sensorless Fan and Pump Control, White Goods Inverter Board, Drones and Quadcopter ESC, Industrial Servo and Stepper Drives, Portable Battery-Powered Tools, HVAC Blower Control.
BLDC / PMSM Motor Control
The PIC24EP32MC202T-I/SS is purpose-built for BLDC and PMSM motor drives, with 6 high-speed PWM channels (1.04 ns edge resolution), four on-chip op-amps for current shunt amplification, dual 10-bit 1.1 Msps ADCs with 10 sample-and-hold channels for simultaneous phase-current sampling, and a Quadrature Encoder Interface. The 70 MIPS PIC24E core executes field-oriented-control loops at 20 kHz PWM with deterministic timing. Place the MCU between the three-phase inverter and the position-feedback connector; the 28-SSOP package exposes enough GPIO for sensor input plus UART/SPI/CAN-less host comms. Use it in cordless tools, e-bikes, small appliances, and HVAC blowers where on-chip op-amps save 4 external amplifiers from the BOM.
Recommended
Sensorless Fan and Pump Control
The PIC24EP32MC202T-I/SS integrates dual ADC channels and high-resolution PWM that suit back-EMF sensorless commutation for 12 V/24 V DC fan and pump motors. With the 32 KB Flash, developers can fit Microchip's sensorless FOC library without external DSPs. Four on-chip op-amps condition current shunts and back-EMF signals, removing external analog stages. The 28-SSOP industrial -40 to +85 C grade handles appliance and outdoor enclosure environments. The part drops directly onto 3-phase 30-60 V inverter boards typically built for ceiling fans, refrigerator compressors, and circulator pumps.
Recommended
White Goods Inverter Board
White-goods inverters (washing-machine direct-drive drums, dishwasher circulation pumps, refrigerator compressors) need a single MCU running the FOC algorithm at 16-20 kHz while reading multiple analog sensors simultaneously. The PIC24EP32MC202T-I/SS achieves this with 70 MIPS, dual 10-bit ADCs, and 10 sample-and-hold channels that sample all three phase currents in the same PWM cycle. The 4 KB dedicated motor-control PWM RAM keeps ISR deterministic even with multiple control loops. On-chip op-amps replace four external current-sense amplifiers, shrinking BOM cost. The 28-SSOP is easy to hand-solder during prototyping and reflow-ready for high-volume SMT.
Recommended
Drones and Quadcopter ESC
Drone electronic-speed controllers (ESCs) need a deterministic MCU that runs fast current loops at 32 kHz PWM with rapid ADC sampling. The PIC24EP32MC202T-I/SS runs the PIC24E core at 70 MIPS, driving six PWM outputs for a 3-phase BLDC bridge with dead-time, while the dual ADC samples shunt currents with 1.1 Msps throughput. Its small 28-SSOP footprint fits inside miniaturized ESC PCBs under 20 mm square. The QEI module handles sensorless startup, and the four on-chip op-amps condition three shunt signals plus a battery-current monitor without external amplifiers, reducing ESC PCB complexity.
Recommended
Industrial Servo and Stepper Drives
The PIC24EP32MC202T-I/SS drives low-power stepper and servo amplifiers through its 6 PWM channels, with the QEI module accepting incremental encoder feedback up to 5 MHz for closed-loop position control. The 32 KB Flash and 2 KB SRAM are sufficient for Microchip's Harmony motor-control libraries implementing trapezoidal and S-curve ramps. UART and I2C handle RS-485 and Modbus comms to a host controller. Designers benefit from the industrial -40 to +85 C temperature range for factory-floor deployments. The 28-SSOP package combines compactness with ease of rework on industrial-grade PCBs.
Recommended
Portable Battery-Powered Tools
Cordless drills, impact drivers, and garden tools rely on the PIC24EP32MC202T-I/SS to manage 18-36 V Li-ion battery packs driving BLDC motors via 3-phase inverter stages. The MCU's 6 PWM channels run FOC at 24 kHz with active freewheeling, extending runtime by 15-30% versus 6-step commutation. On-chip op-amps amplify low-side shunt resistors for cycle-by-cycle current limiting, while dual ADC channels monitor voltage and temperature for protection. The 28-SSOP industrial temperature grade covers Li-ion thermal extremes. Its 3.0-3.6 V core draws minimal quiescent, preserving battery charge during standby.
Recommended
HVAC Blower Control
Residential and commercial HVAC blowers use the PIC24EP32MC202T-I/SS to drive single-phase AC induction or 3-phase BLDC blower motors with precise airflow control. The 6 PWM channels provide sine-wave modulation for low-noise operation, while the on-chip op-amps and dual 10-bit ADCs monitor current and motor temperature. UART/I2C comms connect to building-automation controllers, and the 32 KB Flash fits Microchip's HVAC firmware stacks. The 28-SSOP package is well-suited to UL-rated control-board assemblies that must operate continuously at -40 to +85 C inside air-handler cabinets.
Recommended
Recommended Products Summary
Engineering reference data for PIC24EP32MC202T-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24EP32MC202T-E/SS | PIC24EP32MC202-I/SS | PIC24EP32MC202T-I/MM | PIC24EP32MC202-I/SP |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-QFN - same die different package | 28-SPDIP - same die different package |
| Flash Program Memory | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| RAM | 2 KB + 4 KB PWM RAM | 2 KB + 4 KB PWM RAM | 2 KB + 4 KB PWM RAM | 2 KB + 4 KB PWM RAM | 2 KB + 4 KB PWM RAM |
| CPU Performance | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Operating Temperature | -40 C to +85 C | -40 C to +125 C (AEC-Q100) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| PWM Channels | 6 high-speed PWM | 6 high-speed PWM | 6 high-speed PWM | 6 high-speed PWM | 6 high-speed PWM |
| AEC-Q100 Qualified | No | Yes | No | No | No |
| Packaging Form | Tape & Reel | Tape & Reel | Tray (non-T) | Tape & Reel | Tray (non-T) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Through-Hole |
Key Differentiators
- 4 integrated on-chip op-amps (vs PIC24EP32MC202T-E/SS)
- Tape-and-reel packaging for SMT assembly (vs PIC24EP32MC202-I/SS)
- 70 MIPS PIC24E core versus earlier PIC24F devices (vs PIC24FJ64GA002-I/SS)
Design Notes
Place 100 nF ceramic decoupling capacitors within 5 mm of each VDD/VSS pin pair, plus a 4.7 µF bulk capacitor at the board power-entry point. The PIC24EP32MC202T-I/SS internally derives its 1.8 V core supply via an LDO from the 3.0-3.6 V external rail; bulk capacitance directly affects ADC reference stability and PWM jitter. Avoid routing high-current gate-driver traces near the analog VDD pin to minimize ground bounce during switching edges.
The 28-SSOP package (0.65 mm pitch, 5.30 mm body) is rated approximately 95 C/W theta-JA on a 4-layer JEDEC test board. The MCU dissipates well under 200 mW during normal motor-control code execution, so additional heatsinking is unnecessary. However, GPIO-pin drive currents can add a few mW per pin at 10 mA source/sink; cap total sink current at 200 mA per port per datasheet to prevent thermal overload during continuous switching.
Route the OSCI/OSCO traces to the crystal or external clock source as a tightly coupled differential pair, with a continuous ground plane below and short traces under 10 mm. Place the analog AVSS/AVDD pair with a ferrite bead between digital and analog supplies to keep digital switching noise out of the ADC reference. Keep high-side gate-driver switching traces (PWM1H, PWM2H, PWM3H) away from analog ANx pins to preserve 10-bit ADC accuracy.
Do not exceed 3.6 V on VDD - applying 5 V (typical for older PIC18 designs) will damage the PIC24EP core. Also note the MCLR pin requires a 4.7 kΩ pull-up to VDD; leaving MCLR floating can cause erratic resets. The PGED1/PGEC1 pair (pin 28) are the only ICSP programming pins - routing them with no debug-header access on the PCB will lock you out of field firmware updates.
Compliance Information
RoHS and REACH compliant per Microchip product page. The PIC24EP32MC202T-I/SS is industrial-grade; AEC-Q100 qualification applies only to the -E/SS extended-temperature variant.
