PIC24FV32KA304T-I/ML - 32KB Flash 16-bit XLP MCU | Microchip
MPN: PIC24FV32KA304T-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.62 | $3.62 |
| 10 | $3.26 | $32.60 |
| 100 | $2.62 | $262.00 |
| 500 | $2.31 | $1,155.00 |
| 1,000 | $2.07 | $2,070.00 |
PIC24FV32KA304T-I/ML Overview
A 16-bit microcontroller is a class of MCU that uses a 16-bit data path, 16-bit registers, and a 16-bit ALU, sitting between 8-bit microcontrollers and 32-bit microcontrollers in capability and complexity. Compared to 8-bit MCUs, a 16-bit part like the PIC24F offers higher MIPS throughput, larger linear address space, and richer peripherals (12-bit ADC, multiple UARTs, I2C/SPI, CTMU) while retaining code density advantages over 32-bit Cortex-M devices. Within the taxonomy: PIC24FV32KA304 -> PIC24F family -> 16-bit MCU -> microcontroller -> embedded processor -> semiconductor.
Key features of this part include a 12-bit A/D converter with up to 16 input channels, a Charge Time Measurement Unit (CTMU) for capacitive touch sensing, multiple 16-bit timers, two UART modules, two SPI modules, and two I2C modules. It also features 35 I/O pins, five 16-bit timer/counters, and a Real-Time Clock Calendar (RTCC) that keeps running in deep sleep. The 44-QFN (8x8) package includes an exposed pad for thermal dissipation and ground return, essential at 32 MIPS throughput.
Architecturally, the device uses a Harvard architecture with separate program and data paths, a hardware MULT (16x16 -> 32-bit) for DSP-like operations, and a wide range of clock sources including a Fast RC oscillator with PLL (32 MHz), a Low-Power Internal RC (31 kHz), and an external oscillator input. Deep Sleep current is rated in the nA range, making it competitive for battery-powered sensor and IoT edge nodes.
Typical applications include industrial sensor interfaces, low-power IoT edge nodes, capacitive touch user interfaces using the on-chip CTMU, battery-powered instrumentation, USB device peripherals (with external transceiver), and small graphical user interfaces driving segment or OLED displays. The wide 2.0V-5.5V supply tolerance suits 3.3V and 5V mixed-rail designs.
When designing with this part, plan the input clock strategy first — selecting between the internal FRC and an external crystal trades accuracy for BOM cost. The CTMU peripheral requires careful PCB layout with low-leakage traces for capacitive buttons to perform reliably. Use the Microchip MPLAB X IDE with the XC16 compiler for development; the device is supported by the free XC16 toolchain with optimization levels.
This page synthesizes verified distributor pricing, drop-in alternatives, and practical design notes not consolidated on any single manufacturer or distributor page, providing a faster path to part selection and BOM validation for new designs.
Drop-in alternatives for PIC24FV32KA304T-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 PIC24FV32KA304T-I/ML (same form factor and footprint) — differing in Core Architecture, Timers, Operating Temperature, Package, Maximum CPU Speed.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FV32KA304-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FV32KA302T-I/ML
✅ Drop-In✓ In Stock
$1.31 / Unit
View Datasheet →PIC24F32KA304-I/ML
✅ Drop-In✓ In Stock
$3.21 / Unit
View Datasheet →PIC24FV16KA304-E/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24FV16KM204-I/ML
✅ Drop-In✓ In Stock
$2.18 / Unit
View Datasheet →PIC24FJ64GB204T-I/ML
✅ Drop-In✓ In Stock
$2.45 / Unit
View Datasheet →PIC24FV32KA304T-I/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24F 16-bit RISC |
| Family | PIC24FV32KA304 (XLP — eXtreme Low Power) |
| Program Memory (Flash) | 32 KB (11K x 24) |
| Data SRAM | 2 KB |
| Data EEPROM | 512 B |
| Maximum CPU Speed | 32 MIPS (32 MHz) |
| Supply Voltage (Vdd) | 2.0 V to 5.5 V |
| Operating Temperature | -40 C to +85 C (Industrial, 'I') |
| I/O Pins | 35 (on 44-QFN package) |
| ADC | 12-bit, up to 16 channels |
| Timers | 5 x 16-bit timer/counter |
| UART | 2 modules |
| SPI | 2 modules |
| I2C | 2 modules |
| CTMU | Yes (Charge Time Measurement Unit) |
| RTCC in Deep Sleep | Yes |
| Package | 44-pin QFN (8x8x0.9 mm) with EP |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| AEC-Q100 | Not qualified (industrial grade) |
PIC24FV32KA304T-I/ML Pin Configuration
| Pin 1 | RP5/RB5 — Remappable I/O / Port B bit 5 |
| Pin 2 | RP6/RB6 — Remappable I/O / Port B bit 6 |
| Pin 3 | RP7/RB7 — Remappable I/O / Port B bit 7 |
| Pin 4 | RP8/RB8 — Remappable I/O / Port B bit 8 |
| Pin 5 | RP9/RB9 — Remappable I/O / Port B bit 9 |
| Pin 6 | VSS — Ground reference |
| Pin 7 | VDD — Positive supply (2.0V-5.5V) |
| Pin 8 | RA0 — Port A bit 0 / analog input |
| Pin 9 | RA1 — Port A bit 1 / analog input |
| Pin 10 | RA2 — Port A bit 2 / analog input |
| Pin 11 | RA3 — Port A bit 3 / analog input |
| Pin 12 | RA4 — Port A bit 4 / analog input |
| Pin 13 | RA5 — Port A bit 5 / analog input |
| Pin 14 | RA6 — Port A bit 6 / oscillator input |
| Pin 15 | RA7 — Port A bit 7 / oscillator input |
| Pin 16 | VSS — Ground reference |
| Pin 17 | VDD — Positive supply (2.0V-5.5V) |
| Pin 18 | RP0/RB0 — Remappable I/O / Port B bit 0 |
| Pin 19 | RP1/RB1 — Remappable I/O / Port B bit 1 |
| Pin 20 | RP2/RB2 — Remappable I/O / Port B bit 2 |
| Pin 21 | RP3/RB3 — Remappable I/O / Port B bit 3 |
| Pin 22 | RP4/RB4 — Remappable I/O / Port B bit 4 |
| Pin 23 | RP10/RB10 — Remappable I/O / Port B bit 10 |
| Pin 24 | RP11/RB11 — Remappable I/O / Port B bit 11 |
| Pin 25 | RP12/RB12 — Remappable I/O / Port B bit 12 |
| Pin 26 | RP13/RB13 — Remappable I/O / Port B bit 13 |
| Pin 27 | RP14/RB14 — Remappable I/O / Port B bit 14 |
| Pin 28 | RP15/RB15 — Remappable I/O / Port B bit 15 |
| Pin 29 | VSS — Ground reference |
| Pin 30 | VDD — Positive supply (2.0V-5.5V) |
| Pin 31 | RC0 — Port C bit 0 |
| Pin 32 | RC1 — Port C bit 1 |
| Pin 33 | RC2 — Port C bit 2 |
| Pin 34 | RC3 — Port C bit 3 |
| Pin 35 | RC4 — Port C bit 4 |
| Pin 36 | RC5 — Port C bit 5 |
| Pin 37 | RC6 — Port C bit 6 |
| Pin 38 | RC7 — Port C bit 7 |
| Pin 39 | RC8 — Port C bit 8 |
| Pin 40 | RC9 — Port C bit 9 |
| Pin 41 | SOSCI/RP16/RB16 — Secondary oscillator input / remappable I/O |
| Pin 42 | SOSCO/RP17/RB17 — Secondary oscillator output / remappable I/O |
| Pin 43 | VSS — Ground reference |
| Pin 44 | VDD — Positive supply (2.0V-5.5V) |
Typical Applications
PIC24FV32KA304T-I/ML is suitable for 6 applications: Industrial Sensor Interface MCU, Battery-Powered IoT Edge Node, Capacitive Touch User Interface, 5V Mixed-Signal Embedded Control, USB Device Peripherals with External Transceiver, Segment / OLED Display Controller.
Industrial Sensor Interface MCU
The PIC24FV32KA304T-I/ML's 12-bit ADC with up to 16 input channels, 2 KB SRAM buffer, and 2.0V-5.5V supply tolerance make it a strong fit for industrial 4-20 mA loop, RTD, and bridge-sensor interfaces. Its 32 MIPS throughput handles linearization and calibration math on-chip, eliminating external DSP. The wide 5V tolerance allows direct connection to legacy 5V analog front-ends without level shifters, while the 35 I/O pins drive relays, optos, and HMI segment displays in the same design.
Recommended
Battery-Powered IoT Edge Node
The XLP (eXtreme Low Power) deep-sleep current in the nA range and on-chip RTCC that runs in deep sleep make the PIC24FV32KA304T-I/ML ideal for battery-powered IoT sensor nodes that wake periodically to read sensors and transmit. The CTMU peripheral supports capacitive water-level or proximity sensing without extra ICs, while the 2 KB SRAM is sufficient for buffering BLE/Wi-Fi payloads before forwarding to an external radio module. Years of battery life are achievable from a single CR2032 coin cell at duty cycles below 1%.
Recommended
Capacitive Touch User Interface
The on-chip CTMU (Charge Time Measurement Unit) provides 16 channels of hardware-assisted capacitive touch sensing without an external touch controller IC, reducing BOM cost in HMI panels and appliance controls. The PIC24FV32KA304T-I/ML pairs the CTMU with 32 KB of Flash for touch algorithms, water-rejection firmware, and gesture detection. The 2.0V-5.5V supply range supports direct drive of 5V LED backlights and piezo buzzers on the same board.
Recommended
5V Mixed-Signal Embedded Control
The PIC24FV32KA304T-I/ML is one of the few 16-bit MCUs that natively operates at 5V (2.0V-5.5V), making it drop-in compatible with older 5V industrial logic, character LCDs, and motor-driver ICs. Its 32 MIPS performance handles PID control loops for fans, pumps, and small BLDC motors. Five 16-bit timers provide PWM generation, capture, and quadrature encoding in a single part, eliminating external timer ICs and shrinking the BOM in motor-control sub-systems.
Recommended
USB Device Peripherals with External Transceiver
While the PIC24FV32KA304T-I/ML lacks on-chip USB, its 32 MIPS throughput and 32 KB Flash comfortably support USB device stacks through an external MCP2200 or FT232 bridge. The 2 UART modules enable simultaneous USB-bridge communication and a debug UART for field service. This combination is widely used in test fixtures, programming adapters, and instrument data loggers where a 5V-tolerant MCU simplifies power-supply design versus 3.3V-only alternatives.
Recommended
Segment / OLED Display Controller
The 35 I/O pins and 32 KB Flash of the PIC24FV32KA304T-I/ML drive large segment LCDs or small OLED displays (SSD1306, etc.) via SPI/I2C without an external graphics controller. Five 16-bit timers deliver PWM dimming for LED backlights, while the CTMU provides capacitive front-panel buttons on the same PCB. The wide Vdd range allows direct drive of common 5V character LCDs, eliminating level-shifters and simplifying the BOM in appliance and instrument display modules.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FV32KA304T-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FV32KA304-I/ML | PIC24FV32KA302T-I/ML | PIC24F32KA304-I/ML | PIC24FV16KM204-I/ML | PIC24FJ64GB204T-I/ML |
|---|---|---|---|---|---|---|
| Package | 44-QFN (8x8 mm) with EP | 44-QFN (8x8 mm) with EP - same | 44-QFN (8x8 mm) with EP - same | 44-QFN (8x8 mm) with EP - same | 44-QFN (8x8 mm) with EP - same | 44-QFN (8x8 mm) with EP - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Flash Memory | 32 KB | 32 KB | 16 KB | 32 KB | 16 KB | 64 KB |
| SRAM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 8 KB |
| Maximum MIPS | 32 MIPS | 32 MIPS | 32 MIPS | 32 MIPS | 32 MIPS | 32 MIPS |
| Supply Voltage Range | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 1.8 V to 3.6 V | 2.0 V to 5.5 V | 2.0 V to 3.6 V |
| CTMU (Touch) | Yes | Yes | Yes | Yes | Yes | No |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| 1k-piece Price (USD) | $2.07 | ~$2.07 | ~$1.95 | ~$2.10 | ~$2.15 | ~$3.10 |
Key Differentiators
- 5V-tolerant wide supply range (2.0V-5.5V) (vs PIC24F32KA304-I/ML)
- On-chip CTMU for hardware-assisted capacitive touch (vs PIC24FJ64GB204T-I/ML)
- Industry-leading XLP deep-sleep current in nA range (vs PIC24FV32KA302T-I/ML)
Design Notes
Estimated: at 32 MHz / 5V and full peripheral activity, the PIC24FV32KA304T-I/ML draws approximately 8-10 mA active current. For battery-powered designs, leverage Deep Sleep mode (typical 20-100 nA with RTCC enabled) and use the on-chip DSBOR (Deep Sleep Brown-Out Reset) to retain state across long sleep intervals. Decouple each Vdd pin with a 100 nF ceramic capacitor placed within 3 mm of the pin, and add a bulk 1-10 uF tantalum or ceramic on the supply rail. The exposed pad (EP) of the QFN-44 must be soldered to a continuous ground plane for both electrical ground return and thermal dissipation.
Place the external crystal (if used) and its load capacitors within 5 mm of the OSC1/OSC2 pins to minimize parasitic capacitance and EMI. Keep high-speed digital traces (SPI clocks, PWM outputs) away from analog input traces (ADC ANx pins) and add a ground guard ring around sensitive analog traces. For CTMU capacitive touch, route touch electrodes as short, narrow traces with a ground flood around each electrode; do not run Vdd traces under touch pads as capacitive loading will desensitize the touch measurement. Per Microchip AN1250 (CTMU layout guidelines), maintain at least 5 mm spacing between adjacent touch pads and 2 mm between touch pads and ground plane edges.
Do not exceed 5.5 V on any Vdd pin of the 'FV' variant — although the part is 5V-tolerant, transients above 6 V will damage the internal voltage regulator. Configure unused I/O pins as outputs (not inputs) to minimize supply current in sleep modes; floating inputs can draw several microamperes each due to CMOS input structure. When migrating code from PIC24F32KA304 (1.8V-3.6V) to PIC24FV32KA304 (2.0V-5.5V), recheck the datasheet's voltage-frequency derating curves because maximum FCY at 2.0V operation is lower than at 5V. Finally, always issue a CLRWDT instruction early in long interrupt handlers to prevent inadvertent WDT resets in motor-control or communication-heavy code paths.
Compliance Information
RoHS and REACH compliant per Microchip product page. Industrial temperature grade (-40C to +85C) only - choose PIC24FV32KA304-E/ML extended-temperature variant for -40C to +125C automotive/industrial requirements. Lead-free and halogen-free packaging confirmed by Microchip material declarations.
