PIC24F16KA102-I/SO - 16KB Flash XLP 16-bit MCU 28-SOIC | Microchip
MPN: PIC24F16KA102-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.92 | $3.92 |
| 10 | $3.53 | $35.30 |
| 100 | $3.16 | $316.00 |
| 500 | $2.84 | $1,420.00 |
| 1,000 | $2.52 | $2,520.00 |
PIC24F16KA102-I/SO Overview
A 16-bit MCU (microcontroller unit) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (RAM), non-volatile EEPROM, and configurable peripherals (timers, ADC, communication interfaces). The PIC24F16KA family belongs to the broader category of mixed-signal microcontrollers -> microcontrollers -> integrated circuits -> semiconductors. The 16-bit modified-Harvard RISC architecture delivers deterministic interrupt latency and rich peripheral integration for embedded designs.
Key features include the nanoWatt XLP technology for industry-leading low-power operation with multiple deep-sleep modes (DSBOR, DSWDT, Deep Sleep), Real-Time Clock and Calendar (RTCC) with VBAT retention, an integrated 10-bit ADC with up to 9 channels, multiple Enhanced Capture/Compare/PWM (ECCP) modules, and configurable peripherals including UART, I2C, and SPI. The 28-SOIC package exposes 19 general-purpose I/O pins and supports In-Circuit Serial Programming (ICSP) and In-Circuit Debug (ICD) for development workflows.
Technically, the device operates from 1.8 V to 3.6 V across an industrial temperature range of -40 °C to +85 °C, with hardware multiplier, 16 x 16-bit working register array, and selectable internal/external oscillator topologies. The integrated brown-out reset (BOR), watchdog timer (WDT), and dual oscillator fail-safe clock monitor add reliability to safety-conscious applications.
Typical applications include battery-powered IoT sensor nodes, wearable health monitors, remote controls, energy-harvesting devices, low-power wireless sensor nodes, and industrial metering. The XLP features allow standby currents in the nanoampere range, enabling multi-year battery life on a single coin cell.
When designing with this MCU, use Microchip's MPLAB X IDE with the XC16 compiler for firmware development. Decouple VDD with at least a 100 nF ceramic capacitor placed close to the pins, and route the ICSP/PGD/PGC lines with short traces to programming header pads.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC24F16KA102-I/SO — 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 PIC24F16KA102-I/SO (same form factor and footprint) — differing in Package, ADC, I/O Pins, Timers, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24F16KA101-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.92 / Unit
View Datasheet →PIC24F16KA302-I/SO
✅ Drop-In✓ In Stock
$1.74 / Unit
View Datasheet →PIC24F08KA102-I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24F16KM202-I/SO
✅ Drop-In✓ In Stock
$2.05 / Unit
View Datasheet →PIC24F16KL402-I/SO
✅ Drop-In✓ In Stock
$1.39 / Unit
View Datasheet →PIC24F16KA102-I/SO Maximum Ratings & Electrical Characteristics
| Program Memory Size | 16 KB (5.5K x 24 words) Flash |
| EEPROM Size | 512 bytes |
| CPU Core | 16-bit modified Harvard RISC (PIC24F) |
| Maximum CPU Speed | 32 MHz (16 MIPS at 3.3 V) |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| Operating Temperature | -40 °C to +85 °C (Industrial) |
| Number of I/O Pins | 19 |
| Package / Case | 28-pin SOIC (SO-28, 7.50 mm body width) |
| Mounting Type | Surface Mount |
| Low-Power Technology | nanoWatt XLP with Deep Sleep (DSBOR, DSWDT, RTCC) |
| Oscillator | Internal 8 MHz + PLL; external oscillator support |
| Programming/Debug | ICSP and ICD via PGD/PGC pins |
| RoHS Status | Compliant |
PIC24F16KA102-I/SO Pin Configuration
| Pin 1 | RA0 — Digital I/O / analog input AN0 |
| Pin 2 | RA1 — Digital I/O / analog input AN1 |
| Pin 3 | RA2 — Digital I/O / analog input AN2 / reference voltage VREF- |
| Pin 4 | RA3 — Digital I/O / analog input AN3 / VREF+ |
| Pin 5 | RA4 — Digital I/O / analog input AN4 |
| Pin 6 | RA5 — Digital I/O / analog input AN5 |
| Pin 7 | RA6 — Digital I/O / oscillator output |
| Pin 8 | RA7 — Digital I/O / oscillator input |
| Pin 9 | RB0 — Digital I/O / programming PGD |
| Pin 10 | RB1 — Digital I/O / programming PGC |
| Pin 11 | RB2 — Digital I/O |
| Pin 12 | RB3 — Digital I/O |
| Pin 13 | RB4 — Digital I/O |
| Pin 14 | RB5 — Digital I/O |
| Pin 15 | RB6 — Digital I/O |
| Pin 16 | RB7 — Digital I/O |
| Pin 17 | VDD — Positive supply (3.3 V typical) |
| Pin 18 | VSS — Ground reference |
| Pin 19 | RC0 — Digital I/O |
| Pin 20 | RC1 — Digital I/O |
| Pin 21 | RC2 — Digital I/O |
| Pin 22 | RC3 — Digital I/O |
| Pin 23 | RC4 — Digital I/O |
| Pin 24 | RC5 — Digital I/O |
| Pin 25 | RC6 — Digital I/O |
| Pin 26 | RC7 — Digital I/O |
| Pin 27 | VBAT — RTCC backup battery input |
| Pin 28 | MCLR/RE3 — Master clear reset input / digital I/O |
Typical Applications
PIC24F16KA102-I/SO is suitable for 6 applications: Battery-Powered IoT Sensor Node, Wearable Health Monitor, Industrial Wireless Sensor Tag, Smart Remote Control, Energy-Harvesting Sensor Module, Battery-Backed Data Logger.
Battery-Powered IoT Sensor Node
The PIC24F16KA102-I/SO is an ideal host MCU for battery-powered IoT sensor nodes that wake intermittently to capture measurements and forward them via a low-power radio. Its nanoWatt XLP technology delivers deep-sleep currents around 20 nA with RTCC retention, enabling multi-year coin-cell operation. With 16 MIPS compute, 16 KB Flash, 2 KB RAM, and integrated I2C/SPI peripherals, the part interfaces directly with temperature, humidity, and motion sensors. Compared with 8-bit PIC MCUs, the 16-bit core accelerates on-node data aggregation and lightweight encryption. Place a 100 nF decoupling capacitor within 3 mm of VDD pins and route the ICSP/PGD/PGC traces away from switching rails to maintain noise-free programming.
Recommended
Wearable Health Monitor
For wearable health monitors (heart-rate, SpO2, step-counter wristbands), the PIC24F16KA102-I/SO offers the small 28-SOIC footprint, XLP nanoWatt sleep currents, and sufficient RAM to buffer biosignals before BLE transmission. The 10-bit ADC and configurable PWM support LED driver control for SpO2 photoplethysmography, while the RTCC with VBAT retention keeps wall-clock time when the main battery is removed for charging. Operating from 1.8 V to 3.6 V aligns with single-cell Li-ion chemistries after regulation. Designers should optimize firmware for short active windows with longest possible deep-sleep intervals to maximize battery life between charges.
Recommended
Industrial Wireless Sensor Tag
Industrial wireless sensor tags benefit from the PIC24F16KA102-I/SO's industrial -40 °C to +85 °C temperature range and robust on-chip peripherals. The 16-bit RISC core runs Modbus, IO-Link, or proprietary sensor protocols over UART, while the 10-bit ADC and ECCP modules handle analog signal conditioning and process control outputs. XLP nanoWatt technology allows multi-year operation on lithium-thionyl-chloride primary cells in remote tank-level or pipeline-monitoring installations. The 28-SOIC package is well suited to through-hole or hand-soldered industrial enclosures where QFN parts are difficult to rework.
Recommended
Smart Remote Control
Smart remote controls for TVs, set-top boxes, and home automation hubs run on coin-cell or 2xAAA batteries and benefit from the PIC24F16KA102-I/SO's nanoWatt deep-sleep mode. The MCU wakes on key-press interrupt, transmits an IR or RF command, and returns to sleep within milliseconds, drawing average current in the single-digit microampere range. The 16 KB Flash accommodates IR protocol libraries (RC5, RC6, NEC, SIRC) and pairing/encryption logic. The 28-SOIC package is easy to hand-prototype, and the ICSP interface supports in-circuit firmware updates via a header.
Recommended
Energy-Harvesting Sensor Module
Energy-harvesting sensor modules (solar, piezoelectric, thermoelectric) require extreme sleep currents to operate from micro-watt power budgets. The PIC24F16KA102-I/SO's nanoWatt XLP technology with deep-sleep currents in the tens of nanoamperes is a strong fit. The integrated RTCC with VBAT retention keeps wall-clock time even when the harvested supply collapses, enabling precise duty-cycling of measurement cycles. The 16-bit MCU computes energy-availability checks and synchronizes wake intervals with energy buffer state. Operating from 1.8 V to 3.6 V matches typical supercapacitor or Li-ion buffer voltages without additional regulation.
Recommended
Battery-Backed Data Logger
Battery-backed data loggers (cold-chain monitors, HVAC recorders, asset trackers) leverage the PIC24F16KA102-I/SO's 16 KB Flash for firmware, 2 KB RAM for sample buffering, and 512-byte EEPROM for non-volatile event logs that survive power-loss events. The RTCC with VBAT retention provides accurate timestamps even when the primary battery is replaced, and the 10-bit ADC handles thermistor or voltage measurements. XLP nanoWatt technology permits multi-year logging on a primary cell, with periodic Bluetooth or NFC dumps for data retrieval. The 28-SOIC package simplifies hand-assembly for low-volume industrial SKUs.
Recommended
Recommended Products Summary
Engineering reference data for PIC24F16KA102-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24F16KA101-I/SO | PIC24F16KA302-I/SO | PIC24F08KA102-I/SO | PIC24F16KM202-I/SO | PIC24F16KL402-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same |
| Program Flash | 16 KB | 8 KB (-50%) | 16 KB (same) | 8 KB (-50%) | 16 KB (same) | 16 KB (same) |
| RAM | 2 KB | 2 KB (same) | 4 KB (+100%) | 2 KB (same) | 2 KB (same) | 2 KB (same) |
| Maximum CPU Speed | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) |
| Operating 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 | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Low-Power Technology | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt eXtreme Low Power | nanoWatt XLP |
Key Differentiators
- Industry-leading nanoWatt XLP deep-sleep current with RTCC retention (vs PIC24F16KA302-I/SO)
- 16 KB Flash matches PIC24F16KA302-I/SO with lower cost positioning (vs PIC24F16KA101-I/SO)
- Lower power than KM2 family at same Flash size (vs PIC24F16KM202-I/SO)
Design Notes
Estimated: For a coin-cell battery-powered sensor node, the PIC24F16KA102-I/SO's deep-sleep current (~20 nA with RTCC) plus a 100 ms active wake every 60 s yields an average system current of roughly 1-5 microamperes, supporting multi-year operation on a 220 mAh CR2032. Ensure the LDO chosen for the 3.3 V rail has quiescent current under 1 microampere (e.g., MCP1700 at 1.6 microamperes) to avoid dominating the sleep budget. Disable unused peripherals and oscillator sources in firmware during sleep to minimize active current.
Place a 100 nF ceramic decoupling capacitor within 3 mm of each VDD/VDDCORE pin pair on the PIC24F16KA102-I/SO, and a bulk 10 microfarad capacitor near the ICSP header to suppress programming glitches. Route the ICSP/PGD and PGC traces as short, parallel, length-matched paths; avoid routing them near switching power or RF traces. Provide a 10 kohm pull-up on MCLR/RE3 (pin 28) unless the application actively drives the reset line; missing pull-ups are a common cause of intermittent programming failures.
Do not assume the internal 8 MHz oscillator is accurate enough for UART communications: enable the PLL with calibration against a 32.768 kHz crystal via the RTCC for accurate baud rates in industrial temperature ranges. When migrating firmware from a PIC24F16KA101-I/SO or PIC24F08KA102-I/SO variant, verify the Flash erase block size and program-memory model registers are updated; the smaller-memory variants have a different configuration map. Finally, leaving the JTAG pins unconfigured at startup may cause unwanted analog activity on those pins - explicitly set them to digital I/O in the initialization code.
Compliance Information
RoHS compliance and lead-free status per Microchip product page. Industrial temperature grade (-40 °C to +85 °C). AEC-Q100 not applicable - this part targets consumer and industrial markets, not automotive. Halogen-free status not directly stated in the verified web data; set to 'unknown'.
