PIC24HJ12GP202-I/ML - 40 MIPS 16-bit MCU, 12KB Flash, 28-QFN | Microchip
MPN: PIC24HJ12GP202-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.1 | $4.10 |
| 10 | $3.75 | $37.50 |
| 100 | $3.2 | $320.00 |
| 500 | $2.85 | $1,425.00 |
| 1,000 | $2.55 | $2,550.00 |
PIC24HJ12GP202-I/ML Overview
A 16-bit microcontroller (MCU) is a class of embedded processor whose data path, registers, and ALU operate on 16 bits per instruction. PIC24H devices sit in the hierarchy: 16-bit MCU -> modified Harvard architecture MCU -> general-purpose embedded controller -> semiconductor. They offer higher code density and arithmetic throughput than 8-bit MCUs while remaining simpler than 32-bit ARM Cortex-M parts. This places the PIC24HJ12GP202-I/ML squarely in the sweet spot for cost-sensitive real-time control designs.
Key features of this part include 12 KB Flash (4K x 24 words), 1 KB SRAM, 21 I/O pins, up to 16-channel 10/12-bit ADC, multiple UART/SPI/I2C peripherals, and a wide 3.0 to 3.6 V supply range. The 40 MIPS execution rate at 40 MHz oscillator (with internal PLL) enables fast closed-loop control loops, while the integrated CRC module and motor-control PWM peripherals make the device well-suited to digital power and motor-drive sequencing.
From an architectural standpoint, the PIC24HJ12GP201000 instruction facilitates deterministic 5-cycle instruction execution, 16 working registers, and a hardware Multiply/Divide unit. The 28-QFN (6x6 mm) package exposes 21 general-purpose I/O, with separate analog and digital supply pins to support mixed-signal designs. Microchip's MPLAB X IDE and XC16 compiler provide full support, and the device is footprint-compatible with PIC24HJ32GP302/304 and PIC24HJ64GPX02/X04, easing migration paths.
Typical applications include digital power conversion (SMPS), BLDC/PMSM motor control, sensor signal conditioning, industrial sensors, and embedded HMI panels. Its low BOM cost, ample analog integration, and seamless migration to larger PIC24F, dsPIC33F, and dsPIC30F devices make it a versatile mainstream MCU.
When designing with this part, allocate decoupling capacitors close to VDD/VSS pins and keep analog/digital ground returns separated. The internal 7.3728 MHz FRC oscillator with PLL provides stable operation without an external crystal in many cases, but EMI-sensitive applications should still use an external oscillator with proper PCB layout.
This page synthesizes real-time distributor pricing, pin-compatible drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, supporting engineers and procurement teams evaluating this part for new or replacement designs.
Drop-in alternatives for PIC24HJ12GP202-I/ML — 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 PIC24HJ12GP202-I/ML (same form factor and footprint) — differing in Core Architecture, MSL Level, Mounting Type, Data RAM, Maximum CPU Speed.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24HJ32GP302-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24HJ12GP202-I/SP
✅ Drop-In✓ In Stock
$3.74 / Unit
View Datasheet →PIC24HJ12GP202-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24HJ12GP202-I/SS
✅ Drop-In✓ In Stock
$3.1 / Unit
View Datasheet →PIC24HJ12GP201-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24HJ12GP202-I/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24H 16-bit Modified Harvard |
| Program Flash | 12 KB (4K x 24 words) |
| SRAM | 1 KB |
| Maximum CPU Speed | 40 MIPS |
| Oscillator Frequency | 20 MHz external, up to 40 MHz with PLL |
| Supply Voltage (VDD) | 3.0 V to 3.6 V |
| I/O Pins | 21 |
| Package | 28-QFN (6x6 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial) |
| Communication Peripherals | UART, SPI, I2C |
| Instruction Latency | 5 cycles |
| Internal Oscillator | 7.3728 MHz FRC with PLL |
| Special Features | CRC module, motor-control PWM, 5V tolerant I/O |
| RoHS Status | Compliant |
| MSL Level | 3 (168 hours) |
PIC24HJ12GP202-I/ML Pin Configuration
| Pin 1 | MCLR — Master Clear (reset) input, active low |
| Pin 2 | AN0/RP0/C1IN-/CN2/RB0 — Analog input 0 / Remappable pin / Comparator input |
| Pin 3 | AN1/RP1/C1IN+/CN3/RB1 — Analog input 1 / Remappable pin / Comparator input |
| Pin 4 | AN2/RP2/C2IN-/CN4/RB2 — Analog input 2 / Remappable pin / Comparator input |
| Pin 5 | AN3/RP3/C2IN+/CN5/RB3 — Analog input 3 / Remappable pin / Comparator input |
| Pin 6 | VDD — Positive supply voltage (3.0-3.6V) |
| Pin 7 | VSS — Ground reference |
| Pin 8 | OSC1/RC12 — Oscillator crystal input or general I/O |
| Pin 9 | OSC2/RC13 — Oscillator crystal output or general I/O |
| Pin 10 | RP4/CN6/RB4 — Remappable peripheral pin / I/O |
| Pin 11 | RP5/CN7/RB5 — Remappable peripheral pin / I/O |
| Pin 12 | PGED2/AN4/RP6/CN8/RB6 — ICD data / remappable peripheral pin |
| Pin 13 | PGEC2/AN5/RP7/CN9/RB7 — ICD clock / remappable peripheral pin |
| Pin 14 | AN6/RP8/CN10/RB8 — Analog input 6 / remappable peripheral pin |
| Pin 15 | AN7/RP9/CN11/RB9 — Analog input 7 / remappable peripheral pin |
| Pin 16 | VDD — Positive supply voltage (3.0-3.6V) |
| Pin 17 | VSS — Ground reference |
| Pin 18 | RP10/CN12/RB10 — Remappable peripheral pin / I/O |
| Pin 19 | RP11/CN13/RB11 — Remappable peripheral pin / I/O |
| Pin 20 | RP12/CN14/RB12 — Remappable peripheral pin / I/O |
| Pin 21 | RP13/CN15/RB13 — Remappable peripheral pin / I/O |
| Pin 22 | RP14/CN16/RB14 — Remappable peripheral pin / I/O |
| Pin 23 | RP15/CN17/RB15 — Remappable peripheral pin / I/O |
| Pin 24 | AN8/RP16/C1IN+/CN18/RC0 — Analog input 8 / remappable peripheral pin |
| Pin 25 | AN9/RP17/C2IN+/CN19/RC1 — Analog input 9 / remappable peripheral pin |
| Pin 26 | AN10/RP18/CN20/RC2 — Analog input 10 / remappable peripheral pin |
| Pin 27 | AN11/RP19/CN21/RC3 — Analog input 11 / remappable peripheral pin |
| Pin 28 | AVDD — Analog positive supply voltage (3.0-3.6V) |
Typical Applications
PIC24HJ12GP202-I/ML is suitable for 6 applications: Digital Switch-Mode Power Supply (SMPS) Control, BLDC and PMSM Motor Control, Industrial Sensor Signal Conditioning, Embedded HMI and Display Interfaces, LED Lighting and Color-Mixing Controllers, Battery-Operated IoT Sensor Nodes.
Digital Switch-Mode Power Supply (SMPS) Control
The PIC24HJ12GP202-I/ML is widely used as the control core in digital SMPS designs, where its 40 MIPS throughput closes voltage and current loops in single-digit microseconds - critical for PFC, LLC, and phase-shifted full-bridge topologies. The 10/12-bit ADC with multiple sample-and-hold channels captures both primary-side voltage and secondary-side current simultaneously, while the high-resolution PWM module drives the main switch and synchronous rectifier with dead-band control. The integrated hardware CRC module validates firmware integrity for safety-critical power applications, and the 28-QFN (6x6 mm) footprint keeps BOM cost and PCB area low for sub-100W adapters. According to Microchip application notes, this MCU family is referenced in AN1207 and DN1208 digital power reference designs, where the deterministic 5-cycle instruction latency ensures jitter-free PWM timing. The wide 3.0-3.6 V supply range also pairs cleanly with aux supplies derived from the PFC output.
Recommended
BLDC and PMSM Motor Control
The PIC24HJ12GP202-I/ML drives 3-phase BLDC and PMSM motors using its integrated motor-control PWM module, which supports complementary outputs with programmable dead time and hardware fault shutdown. The 40 MIPS execution rate is sufficient for sensorless back-EMF trapezoidal commutation at speeds up to several thousand RPM, while the 21 I/O pins accommodate Hall sensors, quadrature encoders, and three-phase gate drivers. The 5-cycle instruction latency produces deterministic ISR entry for the ADC-triggered commutation routine, ensuring smooth torque. For designs scaling up to FOC, the PIC24HJ32GP302-I/ML on the same footprint adds the necessary CPU headroom. Microchip's AN1078 sensorless FOC reference and motorBench development suite target this part family, validating its use in appliance fans, HVAC blowers, e-bike traction, and small drone ESCs where the -40C to +85C industrial temperature range is required.
Recommended
Industrial Sensor Signal Conditioning
The PIC24HJ12GP202-I/ML integrates a 10/12-bit ADC, multiple UART/SPI/I2C peripherals, and 21 GPIOs - making it well-suited for industrial sensor hubs that aggregate analog sensors and forward data to a PLC or industrial gateway. Its 5V-tolerant I/O allows direct connection to legacy 5V sensor outputs without level shifters, while the 3.0-3.6 V core supply rails cleanly. The 1 KB SRAM is sufficient for buffering sensor bursts before packetization, and the 12 KB Flash fits complete sensor-fusion firmware including calibration tables. The 40 MIPS core supports up to 100 Hz multi-axis IMU fusion with on-chip CRC for packet integrity. In 4-20 mA loop-powered sensor transmitters, the low-power PIC24 sleep modes extend battery life, and the 6x6 mm QFN fits inside standard sensor head enclosures.
Recommended
Embedded HMI and Display Interfaces
Embedded HMI panels - from coffee machines to industrial control keypads - use the PIC24HJ12GP202-I/ML as the main controller because its 40 MIPS core handles button-matrix scanning, character LCD driving, and communication with host MCUs simultaneously without missed events. The 21 GPIO pins directly drive 4x4 keypad matrices and character LCDs without external logic, while the integrated UART/SPI peripherals link to Wi-Fi/BLE modules for cloud connectivity. The hardware CRC validates command packets, reducing firmware overhead. Compared to 8-bit alternatives, the 16-bit PIC24H core processes JPEG bitmaps and SPI TFT displays more responsively, while staying cheaper than ARM Cortex-M0+ designs. The 6x6 mm QFN package fits behind 2.4-inch TFT panels, and the industrial temperature rating suits outdoor HMI kiosks.
Recommended
LED Lighting and Color-Mixing Controllers
Architectural and horticultural LED drivers use the PIC24HJ12GP202-I/ML to perform multi-channel PWM dimming and color-mixing at high refresh rates invisible to the eye. The MCU's multiple PWM channels with 16-bit duty resolution drive RGBW LED strings at 1 kHz+ PWM without flicker, while the ADC reads photodiode and temperature sensors for closed-loop lumen and thermal management. The 40 MIPS CPU computes CIE 1931 color-space mixing in real time, ensuring consistent color across dim levels. The 12 KB Flash fits lookup tables for gamma correction, and the hardware CRC validates DMX-512 and DALI control packets over UART. The 6x6 mm QFN footprint integrates inside small LED bulb form factors, and the -40C to +85C range handles enclosed-luminaire thermal stress.
Recommended
Battery-Operated IoT Sensor Nodes
Low-duty-cycle IoT sensor nodes benefit from the PIC24HJ12GP202-I/ML's multiple low-power modes (sleep, idle, doze) and fast wake-up time. The MCU spends most of its life in deep sleep drawing microamps, then wakes on a timer or interrupt to sample sensors and transmit over UART-attached radios. The 12 KB Flash stores firmware plus small calibration tables without external EEPROM, while the 1 KB SRAM holds packet buffers. The 5V-tolerant I/O directly interfaces with 3.3 V sensor breakout boards, and the integrated 10/12-bit ADC reads analog sensors without external components. Compared to 32-bit Cortex-M0+ parts, this PIC24H delivers more deterministic interrupt latency for time-critical protocol handling, while staying cheaper and easier to source in industrial temperature grades. Microchip's MPLAB Code Configurator accelerates peripheral setup.
Recommended
Recommended Products Summary
Engineering reference data for PIC24HJ12GP202-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24HJ32GP302-I/ML | PIC24HJ12GP202-I/SP | PIC24HJ12GP202-I/SO | PIC24HJ12GP202-I/SS | PIC24HJ12GP201-I/ML |
|---|---|---|---|---|---|---|
| Package | 28-QFN (6x6 mm) | 28-QFN (6x6 mm) - same | 28-SPDIP - differs (through-hole) | 28-SOIC wide - differs | 28-SSOP - differs | 28-QFN (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 12 KB | 32 KB | 12 KB (same die) | 12 KB (same die) | 12 KB (same die) | 12 KB |
| SRAM | 1 KB | 4 KB | 1 KB (same die) | 1 KB (same die) | 1 KB (same die) | 1 KB |
| CPU Speed | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS |
| I/O Pins | 21 | 21 | 21 | 21 | 21 | 15 |
| 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 |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Core Architecture | PIC24H 16-bit | PIC24H 16-bit | PIC24H 16-bit | PIC24H 16-bit | PIC24H 16-bit | PIC24H 16-bit |
Key Differentiators
- Drop-in QFN-28 package upgrade with 167% more Flash (vs PIC24HJ32GP302-I/ML)
- Lower-pin sibling for cost-reduced designs (vs PIC24HJ12GP201-I/ML)
- Same silicon available in through-hole package (vs PIC24HJ12GP202-I/SP)
- Wide industrial temperature range vs consumer parts (vs Generic 8-bit MCUs)
Design Notes
Place a 100 nF decoupling capacitor as close as possible to each VDD/AVDD pin and a bulk 10 uF tantalum or ceramic capacitor on the main 3.3 V rail. Separate analog and digital supply pins (VDD vs AVDD) require their own decoupling - do not short them at the IC; use a ferrite bead or filter if the analog rail must be cleaner. Power-on reset is internal but external reset timing on MCLR improves safety in motor-control designs.
The 28-QFN package has an exposed thermal pad (EP) on the underside which MUST be soldered to a copper pad of at least equal size on the PCB for mechanical reliability and thermal dissipation. The EP should be tied to the ground plane with multiple thermal vias (typically 4-9 vias in a 3x3 grid). Without proper EP soldering, the part may fail under thermal cycling or vibration, especially in automotive-style qualification testing.
The PIC24HJ12GP202 runs ONLY from 3.0-3.6 V - despite several GPIO pins being 5V-tolerant inputs, the core will latch up if VDD falls outside the specified range. Avoid connecting VDD directly to a 5V rail even with a series resistor; use a proper LDO or DC-DC. The internal FRC oscillator is calibrated but drifts with temperature; for UART communication above 115200 baud over industrial -40C to +85C range, use an external crystal with PLL for stable baud rates.
Keep analog signal traces (ADC inputs, comparator inputs) short and away from switching PWM outputs to minimize crosstalk. Route the OSC1/OSC2 traces as a short differential pair with a grounded guard ring if using a crystal. Place the IC's MCLR pull-up resistor close to the pin to avoid spurious resets from capacitive coupling on long traces. Separate the analog ground (under AVSS pin) from digital ground (under VSS) and join them at the PCB's power-entry ground point only.
Compliance Information
Industrial temperature grade (-40C to +85C). Not AEC-Q100 qualified - not intended for automotive safety-critical applications. RoHS/REACH compliant per Microchip product declaration.
