PIC24F16KA304T-I/PT - 16-bit XLP MCU, 16KB Flash, 44-TQFP | Microchip
MPN: PIC24F16KA304T-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.12 | $3.12 |
| 10 | $2.81 | $28.10 |
| 100 | $2.49 | $249.00 |
| 500 | $2.18 | $1,090.00 |
| 1,000 | $1.94 | $1,940.00 |
PIC24F16KA304T-I/PT Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (RAM), and a rich mix of peripherals such as ADCs, timers, communication interfaces, and I/O ports onto a single silicon die. Within the broader hierarchy, this device sits in the microcontrollers branch of integrated circuits, alongside the categories of digital signal controllers (DSCs) and microprocessors (MPUs). PIC24F devices specifically target applications where deterministic real-time response and ultra-low power consumption are required, slotting between 8-bit PIC16/PIC18 MCUs and higher-performance dsPIC33/PIC32 parts.
Key features of the PIC24F16KA304 family include the eXtreme Low Power (XLP) technology, with typical Deep Sleep currents below the microamp range, and on-chip peripherals such as the RTCC, DS-WDT, and DS-BOR that continue running while the CPU is halted. The 12-bit A/D converter combined with the CTMU enables touch sensing and accurate time-of-flight measurement using a single ADC channel. Multiple serial interfaces (UART, SPI, I2C) and a configurable 16-bit timer/capture/compare/PWM block support motor control, sensor fusion, and human-interface designs.
The architecture uses a modified Harvard layout with separate program Flash and data RAM buses, allowing simultaneous instruction fetch and data access, plus a 16-element working register array that simplifies C compiler code generation. The XLP technology targets battery-powered designs where average current consumption dominates battery-life calculations, making the part well-suited for products that spend most of their operational life in sleep states. JTAG and ICSP debug interfaces are supported through dedicated pins, enabling in-circuit debugging without consuming additional package pins.
Typical applications include battery-powered IoT sensor nodes, wearable health and fitness devices, remote controls, electronic shelf labels, smart thermostats, low-power wireless sensor hubs, and industrial metering where long battery life and moderate processing performance are both required. The 44-pin TQFP package provides ample I/O for mixed-signal designs while maintaining a small 10x10 mm footprint.
When designing with this MCU, ensure the VDDCORE pin is bypassed with the recommended LC/RC filter and that VDD is decoupled with a 100 nF ceramic capacitor placed within 5 mm of the package. For lowest deep-sleep current, leave unused I/O pins configured as outputs driving low and disable unused peripherals via the PMD (Peripheral Module Disable) registers before entering sleep.
This page synthesizes distributor pricing, drop-in package-compatible alternatives, and practical low-power design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC24F16KA304T-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 PIC24F16KA304T-I/PT (same form factor and footprint) — differing in ADC, Operating Temperature, Package, Timers, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24F16KA304-I/PT
✅ Drop-In✓ In Stock
$4.12 / Unit
View Datasheet →PIC24F16KA304-E/PT
✅ Drop-In✓ In Stock
$2.45 / Unit
View Datasheet →PIC24FJ64GA104-I/PT
✅ Drop-In✓ In Stock
$3.97 / Unit
View Datasheet →PIC24F16KA302T-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.6 / Unit
View Datasheet →PIC24F16KA301T-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.68 / Unit
View Datasheet →PIC24F16KA304T-I/PT Maximum Ratings & Electrical Characteristics
| Core | PIC24F 16-bit |
| Program Memory (Flash) | 16 KB (5.5K x 24) |
| Data RAM | 2 KB |
| EEPROM | 512 bytes |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Operating Voltage | 1.8 V to 3.6 V |
| ADC | 12-bit, with CTMU |
| Package | 44-pin TQFP (PT) 10x10 mm |
| Operating Temperature | -40C to +85C (Industrial, "I") |
| Timers | 16-bit Timer/Capture/Compare/PWM modules |
| Communication | UART, SPI, I2C |
| Low-Power Modes | Deep Sleep with DSBOR, DSWDT, RTCC (XLP) |
| Programming/Debug | ICSP and JTAG |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC24F16KA304T-I/PT 44-pin tqfp (pt) 10x10 mm Pin Configuration Guide
Pin configuration for PIC24F16KA304T-I/PT (44-pin tqfp (pt) 10x10 mm package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for PIC24F16KA304T-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
PIC24F16KA304T-I/PT is suitable for 6 applications: Battery-Powered IoT Sensor Nodes, Wearable Health and Fitness Devices, Remote Controls and Human-Interface Devices, Electronic Shelf Labels and Retail Displays, Smart Thermostats and HVAC Controllers, Industrial Metering and Data Loggers.
Battery-Powered IoT Sensor Nodes
The PIC24F16KA304T-I/PT's XLP Deep Sleep mode with sub-microamp current makes it ideal for battery-powered IoT sensor nodes that spend >99% of operational time in sleep. The on-chip 12-bit ADC with CTMU enables capacitive soil-moisture, liquid-level, or gas-sensor measurements directly, while the RTCC schedules periodic wake-ups without CPU intervention. With 16 KB Flash and 2 KB RAM the device can run a lightweight proprietary sub-GHz or BLE HCI stack alongside sensor fusion. Operating from 1.8-3.6 V it accepts a single lithium-thionyl-chloride cell directly without a boost regulator. The 44-TQFP package leaves ample I/O for multiple analog and digital sensor channels.
Recommended
Wearable Health and Fitness Devices
Wearable fitness bands and medical patches benefit from the PIC24F16KA304T-I/PT's combination of XLP low-power operation and on-chip CTMU for touch/proximity sensing. Heart-rate, SpO2, and body-temperature sensors connect via the integrated 12-bit ADC and I2C peripherals, while the 16 MIPS core runs step-counting and basic activity-classification algorithms in firmware. Deep Sleep with active RTCC preserves battery life during standby, supporting multi-month operation on a CR2032 coin cell. The 44-TQFP package fits inside wristband form factors with adequate I/O for haptic drivers and OLED displays.
Recommended
Remote Controls and Human-Interface Devices
Universal remote controls, wireless key fobs, and human-interface devices leverage the PIC24F16KA304T-I/PT's CTMU for capacitive touch keys and ultra-low sleep current that extends battery life to multi-year levels. The on-chip UART, SPI, and I2C interfaces connect to sub-GHz transceivers, BLE modules, or infrared LEDs. With 16 KB Flash the device supports multiple IR protocols or proprietary RF stacks. The industrial -40C to +85C temperature range ensures reliable operation in automotive cabins and outdoor environments, and the 44-TQFP provides enough I/O for key matrices, rotary encoders, and LCD segments.
Recommended
Electronic Shelf Labels and Retail Displays
Electronic shelf labels (ESL) and retail price-tag displays require multi-year battery life and a small form factor - a perfect match for the PIC24F16KA304T-I/PT's XLP Deep Sleep with active RTCC. The 16 MIPS core drives e-paper or segmented LCD panels via SPI or GPIO, while the 12-bit ADC monitors battery voltage for low-battery alerts. Operating from 1.8-3.6 V the device runs directly from coin-cell or printed batteries. The wide industrial temperature range ensures visibility and operation in chilled and freezer retail cabinets, and the 44-TQFP leaves I/O headroom for multi-color or multi-segment ESL designs.
Recommended
Smart Thermostats and HVAC Controllers
Smart thermostats benefit from the PIC24F16KA304T-I/PT's mix of analog and digital peripherals plus XLP low-power operation for battery-backup or energy-harvesting designs. The 12-bit ADC reads multiple thermistor inputs for indoor, outdoor, and supply-air temperature sensing, while PWM outputs drive triac-controlled fans or damper actuators. UART/SPI interfaces connect to Wi-Fi or BLE modules for cloud connectivity. The 44-TQFP package provides the GPIO count needed for keypads, character LCDs, and triac interfaces while fitting inside standard wall-plate form factors.
Recommended
Industrial Metering and Data Loggers
Industrial utility meters and remote data loggers require long battery life, robust peripherals, and industrial temperature range - all delivered by the PIC24F16KA304T-I/PT. The 12-bit ADC with CTMU accurately measures voltage, current, and pulse outputs from flow meters, while the RTCC timestamps each measurement for billing or analytics. UART and I2C peripherals connect to wireless M-Bus, LoRa, or cellular modules for backhaul. The XLP Deep Sleep with DSBOR and DSWDT ensures the meter survives brown-outs and remains operational for 10+ years on a single battery pack.
Recommended
Recommended Products Summary
Engineering reference data for PIC24F16KA304T-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24F16KA304-I/PT | PIC24F16KA304-E/PT | PIC24FJ64GA104-I/PT | PIC24F16KA302T-I/ML |
|---|---|---|---|---|---|
| Package | 44-TQFP (PT) | 44-TQFP (PT) - same | 44-TQFP (PT) - same | 44-TQFP (PT) - same | QFN - different |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 16 KB | 16 KB | 16 KB | 64 KB (4x upgrade) | 16 KB |
| Data RAM | 2 KB | 2 KB | 2 KB | 8 KB | 2 KB |
| CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS |
| Family | XLP (eXtreme Low Power) | XLP | XLP | General Purpose | XLP |
| Operating Temperature | -40C to +85C (I) | -40C to +85C | -40C to +125C (E) | -40C to +85C | -40C to +85C |
| Packaging | Tape & Reel (T) | Tray | Tray | Tray | Tape & Reel |
Key Differentiators
- Lowest deep-sleep current in its class with active RTCC (vs PIC24FJ64GA104-I/PT)
- Same 44-TQFP footprint with 4x Flash upgrade path (vs PIC24FJ64GA104-I/PT)
- Tape-and-reel variant for high-volume SMT lines (vs PIC24F16KA304-I/PT (tray))
Design Notes
For the lowest deep-sleep current on the PIC24F16KA304T-I/PT, disable all unused peripherals via the PMD registers before entering Sleep, configure unused I/O as outputs driving low, and disable the ADC and comparators. Estimated: with all peripherals off and only RTCC running, deep-sleep current can drop below 100 nA per the XLP family datasheet, but actual figures vary by silicon lot and operating voltage - measure on your hardware.
Place a 100 nF ceramic decoupling capacitor within 5 mm of the VDD pin and a 10 uF bulk capacitor near the IC. The VDDCORE pin requires either an external inductor (typically 10 uH) for the internal regulator or a capacitor if the device is configured for the cap-only mode - refer to the device-specific datasheet configuration. Keep analog and digital ground planes connected at a single point to avoid ground-loop noise coupling into ADC readings.
Do not assume all PIC24F16KA304 packages are pin-compatible: the 44-TQFP (PT), 28-pin SPDIP (SP), 28-pin SOIC (SO), and 48-pin QFN (MV) variants have different pin counts and the same I/O is not mapped identically. Always cross-check the pinout table for your chosen package. Also note the "T" suffix denotes tape-and-reel packaging only and does NOT change the part's electrical or thermal specifications - parts with and without "T" are electrically identical.
When using the CTMU for time-of-flight or capacitive touch sensing, route the analog input traces as short as possible with a ground guard ring to minimize leakage and coupling. Use the dedicated CTMU channel rather than multiplexing a regular ADC input where possible. Place a 100 nF bypass capacitor on AVdd if your design uses a separate analog supply rail, and avoid routing digital signals adjacent to the CTMU channels to prevent crosstalk into sensitive touch measurements.
Compliance Information
RoHS and REACH compliant per Microchip product page. Industrial-grade part not AEC-Q100 qualified; not applicable for non-automotive MCU family.