PIC24HJ32GP202T-I/SS - 16-bit 32KB Flash MCU, 40MIPS, 28-SSOP | Microchip
MPN: PIC24HJ32GP202T-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.1 | $5.10 |
| 10 | $4.6 | $46.00 |
| 100 | $4.07 | $407.00 |
| 500 | $3.65 | $1,825.00 |
| 1,000 | $3.24 | $3,240.00 |
PIC24HJ32GP202T-I/SS Overview
What is a 16-bit MCU? A 16-bit microcontroller is a programmable embedded processor whose arithmetic logic unit operates on 16-bit wide data words, bridging the gap between 8-bit legacy MCUs and 32-bit Cortex-class devices. The PIC24H family sits within Microchip's broader microcontroller taxonomy (MCU -> 16-bit MCU -> PIC24H -> digital signal controller family), and shares pin compatibility with the dsPIC33F DSC family. This positioning makes PIC24HJ32GP202T-I/SS suitable for high-speed repetitive computation and closed-loop control tasks that exceed 8-bit headroom but do not require a full 32-bit core.
Key features of the PIC24HJ32GP202T-I/SS include three 16-bit timer/counters that can be paired to form one 32-bit timer, two output-capture channels, and multiple PWM/Input Capture peripheral options. The integrated 12-bit A/D converter (ADC) supports advanced analog sampling for sensor-conditioning tasks. With 21 I/O and DMA channels the device supports parallel data movement without CPU intervention, enabling deterministic real-time performance for motor, power-conversion, and sensor-fusion control loops.
Architecturally, the PIC24HJ32GP202T-I/SS uses a 16-bit modified Harvard core with separate program and data buses, an 8-stage pipeline, and Hardware Multiply/Divide units that compute 16x16-bit multiplications in a single cycle. This combination of architecture and peripheral set explains the part's long-standing use in industrial drives, motor-control, UPS, switched-mode power supply (SMPS) digital control, and consumer appliance control boards where 8-bit performance would create a bottleneck.
Typical applications include industrial motor control (BLDC, PMSM, stepper), digital power conversion (PFC, LLC, full-bridge converters with peak current-mode control), sensor signal conditioning, HVAC fan and compressor controllers, and general-purpose 16-bit embedded control nodes. The wide operating temperature range (-40C to +85C, industrial grade, denoted by the -I suffix) also suits outdoor and automotive under-hood subsystems.
When designing with the PIC24HJ32GP202T-I/SS, ensure the VDDCORE pin is decoupled with a 10 uF bulk capacitor plus a 0.1 uF high-frequency ceramic, and place the AVDD analog supply filter (ferrite bead + 10 uF + 0.1 uF) close to the analog VDD/VSS pair. The -I/SS suffix denotes industrial temperature grade and SSOP package; the trailing 'T' in PIC24HJ32GP202T indicates Tape & Reel packaging. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the standalone Microchip datasheet.
Drop-in alternatives for PIC24HJ32GP202T-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 PIC24HJ32GP202T-I/SS (same form factor and footprint) — differing in Package, Core Architecture, Operating Temperature, Timers, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24HJ32GP202-I/SS
✅ Drop-In✓ In Stock
$3.55 / Unit
View Datasheet →PIC24HJ12GP202-I/SS
✅ Drop-In✓ In Stock
$3.1 / Unit
View Datasheet →PIC24HJ12GP202T-I/SS
✅ Drop-In✓ In Stock
$1.65 / Unit
View Datasheet →dsPIC33FJ32GP202-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ12GP202-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.45 / Unit
View Datasheet →PIC24HJ32GP202T-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit Modified Harvard |
| Family | PIC24H |
| Program Memory | 32 KB Flash |
| Data Memory (SRAM) | 2 KB |
| CPU Speed (max) | 40 MIPS at 40 MHz |
| Supply Voltage (VDD) | 3.0 V to 3.6 V |
| I/O Pins | 21 |
| Timers | Three 16-bit (pairable to 32-bit) |
| A/D Converter | 12-bit integrated ADC |
| PWM Channels | Multiple PWM/Output Compare |
| DMA Channels | Yes |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 28-pin SSOP |
| Mounting Type | Surface Mount |
| Lead-Free / RoHS | Yes |
| ROM Type | Flash |
| Pin Compatible With | dsPIC33F family |
PIC24HJ32GP202T-I/SS Pin Configuration
| Pin 1 | RA0/VREF+/AN0 — Analog input 0 / VREF+ (per datasheet pinout table) |
| Pin 2 | RA1/VREF-/AN1 — Analog input 1 / VREF- |
| Pin 3 | RA2/AN2 — Analog input 2 / GPIO |
| Pin 4 | RA3/AN3 — Analog input 3 / GPIO |
| Pin 5 | RA4/AN4 — Analog input 4 / GPIO |
| Pin 6 | AVDD — Analog supply voltage |
| Pin 7 | AVSS — Analog ground |
| Pin 8 | RA5/AN5 — Analog input 5 / GPIO |
| Pin 9 | RB0/PGED1 — I/O port B0 / Programming data |
| Pin 10 | RB1/PGEC1 — I/O port B1 / Programming clock |
| Pin 11 | RB2 — I/O port B2 |
| Pin 12 | RB3 — I/O port B3 |
| Pin 13 | VDD — Digital supply voltage |
| Pin 14 | OSC1/CLKI — Crystal oscillator input / external clock |
| Pin 15 | OSC2/CLKO — Crystal oscillator output |
| Pin 16 | VSS — Digital ground |
| Pin 17 | RB4 — I/O port B4 |
| Pin 18 | RB5 — I/O port B5 |
| Pin 19 | RB6 — I/O port B6 |
| Pin 20 | RB7 — I/O port B7 |
| Pin 21 | RC5 — I/O port C5 |
| Pin 22 | RC6 — I/O port C6 |
| Pin 23 | RC7 — I/O port C7 |
| Pin 24 | RC8 — I/O port C8 |
| Pin 25 | RC9 — I/O port C9 |
| Pin 26 | RB8 — I/O port B8 |
| Pin 27 | RB9 — I/O port B9 |
| Pin 28 | MCLR — Master Clear (reset) input |
Typical Applications
PIC24HJ32GP202T-I/SS is suitable for 6 applications: BLDC / PMSM Motor Control, Digital Switched-Mode Power Supply (SMPS) Control, Industrial Sensor Signal Conditioning, HVAC Fan and Compressor Controllers, Consumer Appliance Control Boards, General-Purpose 16-bit Embedded Control Node.
BLDC / PMSM Motor Control
The PIC24HJ32GP202T-I/SS is widely used in sensorless and sensored BLDC motor drives because its 40 MIPS core can execute field-oriented control (FOC) at 8-20 kHz PWM rates without saturating CPU bandwidth. The integrated 12-bit ADC samples phase currents at the PWM switching rate, and the three 16-bit timers (pairable to a 32-bit timer) provide the time-base for space-vector modulation and commutation. With 21 I/O pins the device also drives gate-driver ICs and Hall/encoder feedback inputs. Compared with 8-bit MCUs, the 16-bit PIC24H core eliminates accumulator overflow in the Park/Clarke transforms that are central to FOC.
Recommended
Digital Switched-Mode Power Supply (SMPS) Control
In peak-current-mode controlled PFC, LLC, and phase-shifted full-bridge converters, the PIC24HJ32GP202T-I/SS performs the high-speed control loop math (compensation, slope compensation, and fault handling) within a single switching period. The 40 MIPS throughput supports 200-500 kHz digital control loops, while the 12-bit ADC provides adequate resolution for current and output voltage feedback. The DMA channels offload sample transfers so the CPU is reserved for control-law execution, giving deterministic response to peak-current and over-current events critical for power-conversion safety.
Recommended
Industrial Sensor Signal Conditioning
The PIC24HJ32GP202T-I/SS integrates a 12-bit ADC and 21 digital I/O, making it a practical choice for sensor-front-end nodes that aggregate 4-8 analog inputs (temperature, pressure, flow, strain-gauge bridges). The 16-bit ALU handles linearization polynomials and digital filtering without offloading to external DSP, while the 32 KB Flash accommodates lookup tables for RTD/thermistor linearization. Industrial temperature grade (-40C to +85C) supports outdoor panel and cabinet installations.
Recommended
HVAC Fan and Compressor Controllers
Variable-speed HVAC indoor and outdoor units use the PIC24HJ32GP202T-I/SS to implement closed-loop fan and compressor control, modulating PWM drive to BLDC motors based on return-air and coil-temperature feedback. The 3.0-3.6 V supply range aligns with 3.3 V system rails, and the 21 I/O lines can drive multiple triac/relay outputs, keypad/display interfaces, and UART communication to indoor-unit controllers. Low power consumption from the nanoWatt technology (idle/sleep modes) extends standby efficiency in energy-rated HVAC products.
Recommended
Consumer Appliance Control Boards
Washing machines, dishwashers, and induction cooktops use the PIC24HJ32GP202T-I/SS as the main control MCU because of its balance of Flash, peripherals, and price. The 40 MHz core handles UI parsing (segmented LCD drive), sensor acquisition, and inverter control for the main motor in parallel. The 32 KB Flash stores appliance firmware with several weeks of debug history and user-configurable cycles, while the SSOP-28 footprint fits compact appliance mainboards.
Recommended
General-Purpose 16-bit Embedded Control Node
Beyond motor and power, the PIC24HJ32GP202T-I/SS is widely deployed as a general-purpose 16-bit control MCU in industrial sensor hubs, building-automation nodes, and edge-controller cards. The 21 I/O pins support UART, SPI, I2C peripherals for connecting to other Microchip devices (MCP family), and the 32 KB Flash holds communication stacks (Modbus, CAN derivatives). Industrial temperature grade and 3.3 V operation also suit battery-backed systems where 5 V rails are undesirable.
Recommended
Recommended Products Summary
Engineering reference data for PIC24HJ32GP202T-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24HJ32GP202-I/SS | PIC24HJ12GP202-I/SS | PIC24HJ12GP202T-I/SS | dsPIC33FJ32GP202-I/SS | dsPIC33FJ12GP202-I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Program Memory | 32 KB Flash | 32 KB Flash | 16 KB Flash | 16 KB Flash | 32 KB Flash | 16 KB Flash |
| SRAM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
| CPU Speed | 40 MIPS at 40 MHz | 40 MIPS at 40 MHz | 40 MIPS at 40 MHz | 40 MIPS at 40 MHz | 40 MIPS at 40 MHz | 40 MIPS at 40 MHz |
| DSP Engine | No | No | No | No | Yes | Yes |
| I/O Pins | 21 | 21 | 21 | 21 | 21 | 21 |
| Packaging Format | Tape & Reel | Tube | Tube | Tape & Reel | Tube | Tube |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Tape & Reel packaging for SMT assembly lines (vs PIC24HJ32GP202-I/SS)
- 32 KB Flash vs 16 KB Flash for larger firmware (vs PIC24HJ12GP202T-I/SS)
- PIC24H core without DSP engine for general-purpose control (vs dsPIC33FJ32GP202-I/SS)
Design Notes
The PIC24HJ32GP202T-I/SS requires two supply rails - VDD (digital, 3.0-3.6 V) and AVDD (analog, 3.0-3.6 V) - and recommends a ferrite bead (e.g. BLM18PG221) to isolate AVDD from VDD noise. Decouple each AVDD/VDD pair with a 10 uF bulk capacitor and a 0.1 uF high-frequency ceramic placed within 5 mm of the supply pins. Place the AVDD/VSS analog-ground pair near the MCU so return currents do not cross noisy digital traces.
The SSOP-28 has 0.65 mm pitch - solder paste deposition must use laser-cut or fine-pitch stencils (4 mil thickness recommended) and a reflow profile with peak 245-260 C conforming to IPC/JEDEC J-STD-020 for moisture-sensitive classification. Place an unbroken ground plane on layer 2 directly under the SSOP body to provide a low-impedance return path and to limit radiated emissions from the 40 MHz CPU clock.
Do not leave the MCLR pin floating; tie MCLR to VDD through a 10 kohm pull-up and place a 100 nF cap to VDD for noise immunity. Configure unused I/O as outputs (not inputs) to avoid floating-pin current leakage in low-power modes. The 12-bit ADC's accuracy degrades if the source impedance exceeds 5 kohm - add an op-amp buffer (e.g. MCP6002) when sampling high-impedance sensors.
Estimated: at 40 MHz CPU clock with 3.3 V supply and full peripheral activity, the PIC24HJ32GP202T-I/SS draws approximately 30-40 mA. With SSOP-28 thermal resistance of approximately 85 C/W (theta_JA, datasheet typical), the junction temperature rise is 30-40 C above ambient - well within the -40C to +125C junction operating range. No external heatsink is required for typical industrial-temperature applications.
Compliance Information
RoHS and lead-free status per Microchip product-page compliance disclosure. Industrial-grade (-40C to +85C), not AEC-Q100 qualified - choose dsPIC33F automotive variants for AEC-Q100 designs.
