PIC24F16KM102-I/SO - 16-bit 32MHz XLP MCU 16KB Flash | Microchip
MPN: PIC24F16KM102-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.08 | $30.80 |
| 100 | $2.71 | $271.00 |
| 500 | $2.35 | $1,175.00 |
| 1,000 | $2.04 | $2,040.00 |
PIC24F16KM102-I/SO Overview
A 16-bit PIC microcontroller is a member of the broader microcontroller (MCU) family, which sits within embedded computing and semiconductor hierarchies. PIC24F devices use a modified Harvard RISC architecture with 16-bit instructions and 24-bit address space, balancing 8-bit MCU simplicity with 32-bit-class performance at low power. They belong to Microchip's nanoWatt XLP™ product tier, where extreme low-power operation is the primary design driver rather than raw performance.
Key features include a wide operating voltage range of 1.8 V to 5.5 V for the PIC24F variant, deep sleep modes with nanoWatt current consumption, multiple serial interfaces (UART, SPI, I2C), and rich analog peripherals for sensor interfacing. The CLC peripheral allows glue-logic implementation in hardware, reducing firmware overhead and CPU wakeups. Compared to the older PIC24F16KA family, the KM devices add configurable logic and improved ADC performance while retaining the same compiler and MPLAB X toolchain compatibility.
The architecture combines a single-cycle 16-bit datapath with DSP-oriented instructions and hardware multiply/divide, enabling efficient signal processing at clock rates up to 32 MHz (8 MIPS). The 12-bit ADC supports up to 200 ksps, suitable for sensor acquisition loops in IoT nodes. The combination of CLC, comparators, and PWM allows closed-loop motor control, lighting control, and power conversion feedback without external logic.
Typical applications include low-power IoT sensor nodes, consumer electronics remote controls, battery-powered medical devices, and industrial sensor interfaces. The wide 1.8 V to 5.5 V supply range and integrated analog simplify designs powered directly from single-cell Li-ion, two AA cells, or regulated 3.3 V rails. The device is also commonly used in touch-sense front ends, low-cost motor control boards, and HVAC peripherals.
When designing with the PIC24F16KM102-I/SO, ensure that the wide-body 28-SOIC footprint (7.50 mm body width) is correctly placed in PCB libraries - the SO package is mechanically larger than the SSOP variant in the same family. Also note that firmware is portable across KM and KA flash families, but pin assignments for the CLC and comparator outputs differ between SO and SS/SP/QFN variants.
This page synthesizes distributor pricing across 9 channels, validated drop-in alternatives within the same SOIC-28 footprint, and practical design notes not found in the standalone datasheet.
Drop-in alternatives for PIC24F16KM102-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 PIC24F16KM102-I/SO (same form factor and footprint) — differing in Package, Comparators, Low-Power Technology, Operating Temperature, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24F16KA102-I/SO
✅ Drop-In✓ In Stock
$2.52 / Unit
View Datasheet →PIC24F08KM102-I/SO
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC24F16KL402-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.21 / Unit
View Datasheet →PIC24F16KA301-I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24F16KM102-I/SO Maximum Ratings & Electrical Characteristics
| Family | PIC24F KM |
| Core | 16-bit PIC RISC (modified Harvard) |
| Maximum CPU Frequency | 32 MHz (8 MIPS) |
| Program Flash Memory | 16 KB (5.5K x 24 instructions) |
| SRAM | 1 KB |
| EEPROM | 512 bytes |
| Operating Voltage Range | 1.8 V to 5.5 V |
| I/O Pins | 19 (maximum, package-dependent) |
| A/D Converter | 12-bit, up to 19 channels, 200 ksps |
| Comparators | 3 (with configurable reference) |
| Timers | MCCP/SCCP capture/compare/PWM modules |
| Configurable Logic Cell (CLC) | Yes (configurable peripheral) |
| Serial Interfaces | UART, SPI, I2C |
| Low-Power Technology | nanoWatt XLP™ with deep sleep |
| Package | 28-SOIC (SO), 7.50 mm body width |
| Mounting Type | Surface Mount |
| Operating Temperature | -40 C to +85 C (industrial) |
| RoHS Status | Compliant |
PIC24F16KM102-I/SO Pin Configuration
| Pin 1 | RA0 — PORTA bit 0 (analog/digital I/O) |
| Pin 2 | RA1 — PORTA bit 1 (analog/digital I/O) |
| Pin 3 | RA2 — PORTA bit 2 (analog/digital I/O) |
| Pin 4 | RA3 — PORTA bit 3 (analog/digital I/O) |
| Pin 5 | RA4 — PORTA bit 4 (analog/digital I/O) |
| Pin 6 | VDD — Positive supply voltage |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RA7 — PORTA bit 7 (analog/digital I/O) |
| Pin 9 | RA8 — PORTA bit 8 (analog/digital I/O) |
| Pin 10 | RA9 — PORTA bit 9 (analog/digital I/O) |
| Pin 11 | RA10 — PORTA bit 10 (analog/digital I/O) |
| Pin 12 | RA12 — PORTA bit 12 (analog/digital I/O) |
| Pin 13 | RA13 — PORTA bit 13 (analog/digital I/O) |
| Pin 14 | RA14 — PORTA bit 14 (analog/digital I/O) |
| Pin 15 | OSC1 — Crystal oscillator input / clock in |
| Pin 16 | OSC2 — Crystal oscillator output |
| Pin 17 | VSS — Ground reference |
| Pin 18 | RB0 — PORTB bit 0 (analog/digital I/O) |
| Pin 19 | RB1 — PORTB bit 1 (analog/digital I/O) |
| Pin 20 | RB2 — PORTB bit 2 (analog/digital I/O) |
| Pin 21 | RB3 — PORTB bit 3 (analog/digital I/O) |
| Pin 22 | RB4 — PORTB bit 4 (analog/digital I/O) |
| Pin 23 | RB5 — PORTB bit 5 (analog/digital I/O) |
| Pin 24 | RB6 — PORTB bit 6 (analog/digital I/O) |
| Pin 25 | RB7 — PORTB bit 7 (analog/digital I/O) |
| Pin 26 | RB8 — PORTB bit 8 (analog/digital I/O) |
| Pin 27 | RB9 — PORTB bit 9 (analog/digital I/O) |
| Pin 28 | RB14 — PORTB bit 14 (analog/digital I/O) |
Typical Applications
PIC24F16KM102-I/SO is suitable for 6 applications: Battery-Powered IoT Sensor Nodes, Consumer Remote Controls and HMI, Industrial Sensor Signal Acquisition, Low-Cost Motor Control (BLDC/Fan), Portable Medical and Wellness Devices, Smart Home and Building Automation.
Battery-Powered IoT Sensor Nodes
The PIC24F16KM102-I/SO's nanoWatt XLP deep sleep mode draws nano-amp currents between sensor reads, enabling multi-year battery life on a single 3 V coin cell. The 12-bit ADC with up to 19 channels supports simultaneous temperature, humidity, and analog sensor inputs without external multiplexing. The wide 1.8 V to 5.5 V supply range eliminates the need for an LDO, allowing direct connection to two AA cells. The CLC peripheral handles wake-on-threshold logic in hardware, reducing firmware complexity. Compared to 8-bit PIC16 alternatives, the 16-bit core delivers 8 MIPS throughput at 32 MHz, supporting more sophisticated protocol stacks over UART/SPI/I2C for LoRa, BLE, or Sub-GHz radio front ends.
Recommended
Consumer Remote Controls and HMI
The PIC24F16KM102-I/SO is well suited for handheld remote controls, IR blasters, and capacitive-touch human-machine interface panels. The integrated CLC peripheral can decode RC5/SIRC IR protocols in hardware, freeing the CPU for battery management and backlight control. The 12-bit ADC enables touch-sense front ends with up to 19 electrodes, replacing mechanical buttons with a glass overlay. The 16 KB Flash accommodates protocol libraries for multi-device universal remotes, while 1 KB SRAM handles button event buffering. The wide 1.8 V to 5.5 V range supports direct USB-powered or 2xAAA-powered designs, and deep sleep mode keeps standby current below 1 microamp.
Recommended
Industrial Sensor Signal Acquisition
The PIC24F16KM102-I/SO's 12-bit ADC with 200 ksps throughput handles 4-20 mA loop sensors, bridge sensors, and thermistor interfaces in industrial environments. Three comparators with configurable references support window detection for alarm thresholds without CPU intervention. The MCCP/SCCP modules generate PWM signals for valve and actuator control. Operating from -40 C to +85 C industrial temperature range, the device tolerates factory floor conditions. The CLC peripheral combines comparator outputs to drive safety interlocks in hardware, reducing firmware certification burden. The 28-SOIC package is hand-solderable for prototype industrial control boards, while surface-mount production volumes leverage standard SOIC pick-and-place.
Recommended
Low-Cost Motor Control (BLDC/Fan)
The PIC24F16KM102-I/SO drives small brushless DC fans and stepper motors using MCCP/SCCP PWM outputs and comparator-based back-EMF sensing. The CLC peripheral implements state-machine commutation logic in hardware, freeing the CPU to handle speed profiling and stall detection. The 12-bit ADC reads motor current via shunt resistor for closed-loop torque control, while 1 KB SRAM stores PID coefficients and ramp tables. Operating at 32 MHz (8 MIPS), the core executes sensorless BLDC algorithms such as Back-EMF zero-crossing in real time. The wide supply range supports 3.3 V logic directly from single-cell Li-ion or USB, and the 28-SOIC package fits in slim form-factor fan controllers.
Recommended
Portable Medical and Wellness Devices
The PIC24F16KM102-I/SO powers portable blood-pressure monitors, pulse oximeters, and wearable fitness trackers where low-power and accurate analog measurement are essential. The 12-bit ADC with 200 ksps captures photoplethysmography (PPG) waveforms for heart-rate algorithms, while 1 KB SRAM buffers the signal for FFT analysis. The nanoWatt XLP deep sleep mode allows continuous wear with weeks-long battery life, and the wide 1.8 V to 5.5 V supply supports coin-cell or rechargeable Li-ion power. Hardware CLC acceleration reduces CPU wakeups during sensor sampling, lowering average current consumption by 10 to 30 percent compared to firmware-only designs.
Recommended
Smart Home and Building Automation
The PIC24F16KM102-I/SO integrates into smart lighting, occupancy sensors, and HVAC zone controllers in building automation systems. The peripheral-rich design combines UART/SPI/I2C interfaces for wireless modules (Sub-GHz, BLE, or Wi-Fi co-processors), 12-bit ADC for ambient light and temperature sensors, and CLC for hardware-based state machines that minimize wireless wake events. The deep sleep current below 1 microamp makes battery-powered window sensors and door contacts viable for multi-year deployment. The 28-SOIC wide package simplifies hand-prototyping and rework during field installation. The 16 KB Flash accommodates application-specific wireless stacks like Zigbee or Thread MAC layers.
Recommended
Recommended Products Summary
Engineering reference data for PIC24F16KM102-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24F16KA102-I/SO | PIC24F08KM102-I/SO | PIC24F16KL402-I/ML |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (SO) | 28-SOIC (SO) - same | 28-SOIC (SO) - same | 28-SOIC (SO) - same |
| Program Flash | 16 KB | 16 KB - same | 8 KB - 50% less | 16 KB - same |
| SRAM | 1 KB | 1.5 KB - higher | 1 KB - same | 2 KB - higher |
| CLC Peripheral | Yes | No | Yes | No |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 3.6 V - narrower |
| Max CPU Frequency | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) |
| ADC | 12-bit, 19 ch, 200 ksps | 12-bit, 9 ch, 200 ksps | 12-bit, 19 ch, 200 ksps | 12-bit, 9 ch |
Key Differentiators
- Integrated Configurable Logic Cell (CLC) reduces firmware wakeups (vs PIC24F16KA102-I/SO)
- Higher ADC channel count for multi-sensor applications (vs PIC24F16KA102-I/SO)
- Same 28-SOIC footprint as KA variant (vs PIC24F16KA102-I/SO)
Design Notes
The 28-SOIC wide-body package (7.50 mm body width, 1.27 mm pitch) is hand-solderable but requires a precise SOIC-28 PCB land pattern. Standard SSOP-28 or TSSOP-28 land patterns will not fit - use the wide-body SOIC footprint. Place decoupling capacitors (100 nF ceramic + 1 uF bulk) within 5 mm of the VDD pin (pin 6) and VSS pin (pin 7 or pin 17) for stable ADC and core operation. Estimated: typical decoupling placement recommendation is the closest pair within 5 mm of supply pins.
Do not confuse the 28-SOIC (SO) variant with the 28-SSOP (SS) or 28-QFN (ML) variants of the same chip. Pin functions for the CLC outputs, comparator outputs, and PWM pins differ across packages. Always confirm the package suffix before laying out the PCB. The 'I' temperature grade suffix indicates -40 C to +85 C industrial range; 'E' indicates -40 C to +125 C extended range.
Use nanoWatt XLP deep sleep mode aggressively for battery-powered applications. The datasheet specifies deep sleep current below 1 microamp at 3 V, allowing multi-year battery life on a 220 mAh coin cell. Wake sources include RTCC, external interrupts, comparators, and CLC outputs - configure at least one hardware wake source to avoid polling. Estimated: typical sleep-mode current savings vs run-mode are 1000x or greater for idle sensor nodes.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - choose automotive-grade variants in PIC24F KM family for AEC-Q100 needs. Halogen-free and lead-free confirmed by Microchip environmental compliance documents.
