PIC24F16KA304-I/PT - 16-bit 32MHz XLP MCU 16KB Flash | Microchip
MPN: PIC24F16KA304-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.97 | $6.97 |
| 10 | $6.27 | $62.70 |
| 100 | $5.43 | $543.00 |
| 500 | $4.78 | $2,390.00 |
| 1,000 | $4.12 | $4,120.00 |
PIC24F16KA304-I/PT Overview
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (Flash/ROM), data memory (RAM), and integrated peripherals such as timers, ADC/DAC, communication interfaces, and I/O ports. The PIC24F16KA304 belongs to the 16-bit PIC24F family, which sits in Microchip's hierarchy: 16-bit MCU -> PIC24F -> PIC24F XLP low-power series -> power-constrained and battery-powered applications. Compared with 8-bit PIC16/PIC18 parts, the 16-bit core enables larger address spaces, wider data paths, and richer DSP-style arithmetic for signal processing.
Key features include a 12-bit A/D converter with up to 30 channels depending on package, multiple communication peripherals (UART, SPI, I2C), 5 timers, a Real-Time Clock and Calendar (RTCC) that operates in Deep Sleep, plus dedicated Deep Sleep Brown-Out Reset (DSBOR) and Deep Sleep Watchdog Timer (DSWDT). XLP technology enables typical Deep Sleep currents measured in nanoamperes, making the device well suited to battery-powered designs. The CTMU (Charge Time Measurement Unit) supports capacitive touch sensing and precise time-of-flight measurements.
The architecture uses a modified Harvard design with separate program and data buses, a 24-bit instruction word for compact code density, and a deterministic interrupt model. Up to 32 MHz operation across an industrial -40C to +85C range provides ample headroom for closed-loop control, sensor fusion, and USB-less communication stacks.
Typical applications include battery-powered sensor nodes, IoT edge devices, portable medical instrumentation, consumer wearables, and industrial data loggers. The wide operating range also suits automotive accessory and ruggedized telemetry systems. When designing with this part, pair a low-Iq LDO with the MCU, route the 32.768 kHz crystal traces short and guarded, and use the CTMU only after calibrating against an internal reference to achieve reliable touch sensing.
Drop-in alternatives for PIC24F16KA304-I/PT — 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 PIC24F16KA304-I/PT (same form factor and footprint) — differing in ADC, Operating Temperature, Package, Program Memory (Flash), Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24F16KA304-E/PT
✅ Drop-In✓ In Stock
$2.45 / Unit
View Datasheet →PIC24F16KA304-I/MV
✅ Drop-In✓ In Stock
$2.18 / Unit
View Datasheet →PIC24F16KA302-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24F16KA304-I/PT Maximum Ratings & Electrical Characteristics
| Family | PIC24F XLP |
| Core Architecture | 16-bit RISC modified Harvard |
| Program Memory (Flash) | 16 KB (5.5K x 24 instructions) |
| Data Memory (RAM) | 2 KB |
| EEPROM | 512 bytes |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| ADC | 12-bit, up to 30 channels (package dependent) |
| Operating Temperature | -40 C to +85 C (Industrial, I-grade) |
| Package | 44-pin TQFP (10x10 mm) |
| Mounting Type | Surface Mount |
| Communication Interfaces | UART, SPI, I2C |
| Timers | 5 (16-bit) |
| XLP Deep Sleep Current | 20 nA typical (per Microchip XLP family datasheet) |
| MSL Level | 3 (per JEDEC J-STD-020) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC24F16KA304-I/PT Pin Configuration
| Pin 1 | OSC1/CLKI — External oscillator input or system clock input |
| Pin 2 | OSC2/CLKO — External oscillator output or system clock output |
| Pin 3 | MCLR — Master clear reset (active low) |
| Pin 4 | PGEC1 — In-circuit debug/programming clock |
| Pin 5 | PGED1 — In-circuit debug/programming data |
| Pin 6 | AN0/RB0 — Analog input 0 / Port B I/O 0 |
| Pin 7 | AN1/RB1 — Analog input 1 / Port B I/O 1 |
| Pin 8 | AN2/RB2 — Analog input 2 / Port B I/O 2 |
| Pin 9 | AN3/RB3 — Analog input 3 / Port B I/O 3 |
| Pin 10 | AN4/RB4 — Analog input 4 / Port B I/O 4 |
| Pin 11 | AN5/RB5 — Analog input 5 / Port B I/O 5 |
| Pin 12 | VSS — Ground reference |
| Pin 13 | VDD — Positive supply voltage (1.8 V to 3.6 V) |
| Pin 14 | AN6/RB6 — Analog input 6 / Port B I/O 6 (PGEC2 alt) |
| Pin 15 | AN7/RB7 — Analog input 7 / Port B I/O 7 (PGED2 alt) |
| Pin 16 | RC0 — Port C I/O 0 |
| Pin 17 | RC1 — Port C I/O 1 |
| Pin 18 | RC2 — Port C I/O 2 |
| Pin 19 | RC3 — Port C I/O 3 |
| Pin 20 | RC4 — Port C I/O 4 |
| Pin 21 | RC5 — Port C I/O 5 |
| Pin 22 | RC6 — Port C I/O 6 |
| Pin 23 | RC7 — Port C I/O 7 |
| Pin 24 | VSS — Ground reference |
| Pin 25 | VDD — Positive supply voltage |
| Pin 26 | RD0 — Port D I/O 0 |
| Pin 27 | RD1 — Port D I/O 1 |
| Pin 28 | RD2 — Port D I/O 2 |
| Pin 29 | RD3 — Port D I/O 3 |
| Pin 30 | RD4 — Port D I/O 4 |
| Pin 31 | RD5 — Port D I/O 5 |
| Pin 32 | RD6 — Port D I/O 6 |
| Pin 33 | RD7 — Port D I/O 7 |
| Pin 34 | RE0 — Port E I/O 0 |
| Pin 35 | RE1 — Port E I/O 1 |
| Pin 36 | RE2 — Port E I/O 2 |
| Pin 37 | RE3 — Port E I/O 3 |
| Pin 38 | RE4 — Port E I/O 4 |
| Pin 39 | RE5 — Port E I/O 5 |
| Pin 40 | RE6 — Port E I/O 6 |
| Pin 41 | RE7 — Port E I/O 7 |
| Pin 42 | RA0 — Port A I/O 0 |
| Pin 43 | RA1 — Port A I/O 1 |
| Pin 44 | RA2 — Port A I/O 2 |
Typical Applications
PIC24F16KA304-I/PT is suitable for 6 applications: Battery-Powered IoT Sensor Node, Portable Medical Instrumentation, Consumer Wearable Device, Industrial Data Logger, Smart Home Sensor Hub, Capacitive Touch HMI Module.
Battery-Powered IoT Sensor Node
The PIC24F16KA304-I/PT's XLP Deep Sleep current in the nanoamp range and 1.8 V to 3.6 V VDD range make it ideal for battery-powered IoT sensor nodes that must run for years on a single coin-cell or two-AA battery. Its 12-bit ADC, 5 timers, and on-chip RTCC allow direct interface with environmental sensors (temperature, humidity, light), and the CTMU peripheral enables capacitive touch input without external components. The 16 KB Flash provides ample space for over-the-air (OTA) update staging, sensor-fusion libraries, and a small TCP/IP or LoRaWAN MAC layer. Designers typically pair the MCU with a nano-Iq LDO and a low-power radio such as Sub-GHz transceiver. The 32 MHz / 16 MIPS core lets the node wake, sample, transmit, and return to Deep Sleep within milliseconds, dramatically extending battery life.
Recommended
Portable Medical Instrumentation
The PIC24F16KA304-I/PT is suitable for portable medical devices such as glucose meters, pulse oximeters, and handheld diagnostic tools because of its low power consumption, deterministic 16-bit interrupt model, and 12-bit ADC precision. XLP Deep Sleep preserves battery life between measurements, while the 32 MHz CPU performs fast sensor sampling and signal processing. The 16 KB Flash and 2 KB RAM hold small DSP filter routines and lookup tables for clinical algorithms. The 44-pin TQFP package provides enough pins for TFT/LCD drive, button matrix, and serial port diagnostics. Pair the MCU with an instrumentation op-amp front-end for bio-signal acquisition and use the on-chip RTCC for precise time-stamping of readings.
Recommended
Consumer Wearable Device
Wearable fitness bands and smart watches demand long battery life, small footprint, and on-chip peripherals for sensors and HMI - all of which the PIC24F16KA304-I/PT delivers. The 10x10 mm 44-pin TQFP fits inside small enclosures; XLP Deep Sleep in the nanoamp range supports multi-day standby; the CTMU peripheral enables capacitive touch buttons for user input without extra ICs. The 12-bit ADC digitizes heart-rate, SpO2, or motion sensor outputs with adequate resolution for consumer-grade metrics. The 5 timers and UART/SPI/I2C interfaces connect to BLE modules, accelerometers, and OLED displays. The 1.8 V to 3.6 V supply aligns with rechargeable Li-Po battery chemistries.
Recommended
Industrial Data Logger
Industrial data loggers for vibration, temperature, pressure, or process monitoring require deterministic sampling, large Flash for buffering, and the ability to run unattended for months. The PIC24F16KA304-I/PT's 16 KB Flash stores configuration and small buffered datasets, with the option to offload to external EEPROM or SD cards via SPI. The 12-bit ADC and high-impedance analog inputs handle 4-20 mA or 0-10 V transducers with proper scaling. The 32 MHz core runs RTOS-lite schedulers, while XLP idle modes keep thermal budgets low in sealed enclosures. The industrial -40 C to +85 C rating suits factory and outdoor cabinets. Hardware peripherals include RTCC for time-stamped events and DSBOR/DSWDT for fail-safe Deep Sleep wakeup.
Recommended
Smart Home Sensor Hub
Smart-home sensor hubs and edge controllers benefit from the PIC24F16KA304-I/PT's mix of low power, ample Flash for Zigbee/Matter-style protocol stacks, and rich peripherals for sensor aggregation. The 32 MHz CPU executes home-automation MAC logic while the 12-bit ADC reads multiple analog sensors (light, gas, moisture). XLP Deep Sleep with active RTCC allows scheduled wakeups to poll sensors and transmit via UART/SPI to a gateway or Wi-Fi module. The 44-pin TQFP package exposes enough I/O for keypad, LED indicators, and expansion headers. CTMU simplifies capacitive proximity buttons on glass front panels.
Recommended
Capacitive Touch HMI Module
The PIC24F16KA304-I/PT integrates a Charge Time Measurement Unit (CTMU) that simplifies capacitive touch sensing for sliders, buttons, and proximity detection without dedicated touch ICs. Designers can implement 12-segment touch panels or matrix keypads using the on-chip CTMU plus firmware. The 32 MHz CPU executes touch-algorithm processing, debounce, and gesture recognition in real time. The 16 KB Flash holds robot libraries, while 2 KB RAM accommodates touch-state buffers. Combined with XLP Deep Sleep, the part can deliver sub-microamp standby in battery-powered remote controls or HMI modules that wake on touch.
Recommended
Recommended Products Summary
Engineering reference data for PIC24F16KA304-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24F16KA304-E/PT | PIC24F16KA304-I/MV | PIC24F16KA302-I/PT |
|---|---|---|---|---|
| Package | 44-pin TQFP (10x10 mm) | 44-pin TQFP - same | 44-pin TQFP - same | 44-pin TQFP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 16 KB | 16 KB | 16 KB | 8 KB |
| RAM | 2 KB | 2 KB | 2 KB | 1 KB |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
| CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS |
| ADC | 12-bit | 12-bit | 12-bit | 12-bit |
| Supply Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| EEPROM | 512 bytes | 512 bytes | 512 bytes | 512 bytes |
Key Differentiators
- Drop-in temperature range upgrade to +125 C (vs PIC24F16KA304-I/PT)
- XLP Deep Sleep with active RTCC and DSBOR (vs PIC24F16KA302-I/PT)
- Pin-compatible across TQFP-44 codes (vs PIC24F16KA304-I/MV)
Design Notes
XLP Deep Sleep current is specified in the nanoamp range, but real PCB leakage from I/O pins or external circuitry can dominate the total quiescent draw. To realize the lowest sleep current, configure all unused I/O as digital outputs driving low, disable the on-chip modules not in use, and select the secondary 32 kHz LPRC for RTCC when 0.02 % drift is acceptable. Use a low-Iq LDO such as MCP1700 (typical 1.6 uA Iq) to prevent quiescent loss from cascading into the supply rail.
Place decoupling capacitors (100 nF X7R plus 4.7 uF bulk) within 2 mm of each VDD pin pair. The 44-pin TQFP exposes two VDD/VSS pairs (pins 13/12 and 25/24); each pair must have its own 100 nF capacitor. Use a single continuous ground pour on the top layer connected by multiple vias to the inner ground plane to provide a low-impedance return path for high-frequency switching noise.
If an external 32.768 kHz crystal is used for RTCC accuracy, route the SOSC pins (typically on a high-pin-count package) with traces shorter than 5 mm, surrounded by a guard trace tied to analog ground to reduce capacitive coupling from switching signals. Keep the crystal case grounded and avoid running high-speed digital traces beneath it. Crystal load capacitors must be sized per the Microchip PIC24F16KA304 family datasheet crystal table.
Do not leave the MCLR pin floating; it must be tied to VDD through a 10 kohm pull-up resistor, with a capacitor to ground for noise immunity in noisy environments. Failure to do so results in spurious resets when the pin picks up EMI. Likewise, the PGEC1/PGED1 (and PGEC2/PGED2 on RB6/RB7) programming pins should not be loaded with strong pull-down resistors that exceed 5 kohm during in-circuit programming.
When using CTMU for capacitive touch, calibrate the CTMU current at production time against an internal bandgap reference rather than relying on absolute trim values; the CTMU current source can vary up to 20 percent across temperature. Average multiple samples per touch event to reject 50/60 Hz line noise, and apply firmware hysteresis to prevent false triggers on metal-front-panel designs.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - consider PIC24F16KA304-E/PT for extended-temperature only, not automotive. Halogen-free status not explicitly listed in web data.