PIC24F16KM202-I/SP - 16-bit XLP MCU 32MHz 16KB Flash SPDIP-28
MPN: PIC24F16KM202-I/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.49 | $3.49 |
| 10 | $3.14 | $31.40 |
| 100 | $2.8 | $280.00 |
| 500 | $2.51 | $1,255.00 |
| 1,000 | $2.25 | $2,250.00 |
PIC24F16KM202-I/SP Overview
A microcontroller (MCU) is a single-chip computer that combines a CPU core, program memory (Flash), volatile data memory (RAM), non-volatile data memory (EEPROM), and a rich set of peripherals on one IC. Within the broader semiconductor taxonomy, the PIC24F16KM202 sits inside the PIC24F family of 16-bit Flash microcontrollers, which in turn belongs to the 16-bit MCU category, the microcontroller product class, and finally the broader embedded computing domain. The XLP technology explicitly targets battery-powered applications by combining sleep currents in the nanoampere range with multiple low-power operating modes.
Key features include eXtreme Low Power consumption with multiple idle/sleep modes, 12-bit A/D conversion with up to 16 channels, 8-bit DAC output, on-chip operational amplifiers and comparators for signal conditioning, multiple Capture/Compare/PWM (SCCP) and Output Compare/PWM modules for timing-critical control, UART/SPI/I²C serial interfaces, and the CLC peripheral for hardware state-machine implementation. The 32 MHz operation delivers up to 16 MIPS instruction throughput, while the integrated 3V and 5V operating range provides flexibility across industrial and consumer rails.
The device uses the PIC24F modified Harvard architecture with 24-bit instruction words, a 16-bit data path, and a hardware multiply/divide unit. The 12-bit ADC supports multiple conversion trigger sources and a dedicated 1.024 V internal reference, while the integrated op-amps can drive sensor signals directly into the ADC without external amplifiers, reducing BOM cost and PCB area.
Typical applications include low-power IoT sensor nodes, portable medical and fitness monitoring devices, battery-powered industrial instrumentation, LED lighting controllers, and small appliance control boards. The on-chip analog peripherals make it especially suitable for sensor signal-conditioning designs where external op-amps and ADCs would otherwise inflate cost.
When designing with the PIC24F16KM202, the most common pitfall is exceeding the absolute maximum ratings of 6 V on VDD. Designers should also leave the ICD pins reserved for in-circuit debugging and route the analog supply (AVDD) separately from the digital supply (VSS/AVSS) for low-noise ADC performance.
This page synthesizes distributor pricing, drop-in compatible alternatives, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single decision-making reference.
Drop-in alternatives for PIC24F16KM202-I/SP — 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 PIC24F16KM202-I/SP (same form factor and footprint) — differing in Core Architecture, ADC, Package, Program Memory (Flash), Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24F16KM202-I/SO
✅ Drop-In✓ In Stock
$2.05 / Unit
View Datasheet →PIC24F16KM202-E/SP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24F16KM204-I/SP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24F16KL402-E/SP
✅ Drop-In✓ In Stock
$0.98 / Unit
View Datasheet →PIC24F08KM102-I/SO
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC24F16KA301-I/P
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.05 / Unit
View Datasheet →PIC24F16KM202-I/SP Maximum Ratings & Electrical Characteristics
| Core Processor | PIC |
| Core Size | 16-bit |
| Core Architecture | PIC24F modified Harvard, 24-bit instruction word, 16-bit data path |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Program Memory (Flash) | 16 KB (5.5K x 24 instruction words) |
| Data RAM | 2 KB |
| Data EEPROM | 512 B |
| Operating Voltage Range | 1.8 V to 5.5 V (supports 3V and 5V rails) |
| Operating Temperature Range | -40°C to +85°C (Industrial, 'I' grade) |
| Package Type | 28-pin SPDIP (also called DIP-28) |
| Mounting Type | Through-Hole |
| ADC | 12-bit, up to 16 channels |
| DAC | 8-bit |
| Analog Peripherals | Op-amps and comparators on chip |
| Configurable Logic Cell (CLC) | Yes |
| Capture/Compare/PWM Modules | Multiple SCCP and Output Compare/PWM modules |
| Serial Connectivity | I²C, IrDA, LIN, SPI, UART/USART |
| Low-Power Technology | eXtreme Low Power (XLP) with nanoWatt sleep modes |
| RoHS Status | Compliant |
PIC24F16KM202-I/SP Pin Configuration
| Pin 1 | RA0 — GPIO / analog input AN0 |
| Pin 2 | RA1 — GPIO / analog input AN1 |
| Pin 3 | RA2 — GPIO / analog input AN2 / VREF- |
| Pin 4 | RA3 — GPIO / analog input AN3 / VREF+ |
| Pin 5 | RA4 — GPIO / analog input AN4 |
| Pin 6 | RA5 — GPIO / analog input AN5 |
| Pin 7 | RA6 — GPIO / oscillator |
| Pin 8 | RA7 — GPIO / oscillator |
| Pin 9 | VSS — Digital ground |
| Pin 10 | VDD — Digital supply (1.8V to 5.5V) |
| Pin 11 | RB0 — GPIO / PGED1 programming |
| Pin 12 | RB1 — GPIO / PGEC1 programming |
| Pin 13 | RB2 — GPIO / analog input AN8 |
| Pin 14 | RB3 — GPIO / analog input AN9 |
| Pin 15 | RB4 — GPIO / analog input AN10 |
| Pin 16 | RB5 — GPIO / analog input AN11 |
| Pin 17 | RB6 — GPIO / analog input AN12 |
| Pin 18 | RB7 — GPIO / analog input AN13 |
| Pin 19 | VSS — Digital ground |
| Pin 20 | VDD — Digital supply |
| Pin 21 | RC0 — GPIO / analog input AN14 |
| Pin 22 | RC1 — GPIO / analog input AN15 |
| Pin 23 | RC2 — GPIO |
| Pin 24 | RC3 — GPIO |
| Pin 25 | RC4 — GPIO |
| Pin 26 | RC5 — GPIO |
| Pin 27 | RC6 — GPIO |
| Pin 28 | RC7 — GPIO |
Typical Applications
PIC24F16KM202-I/SP is suitable for 6 applications: Battery-Powered IoT Sensor Nodes, Portable Health Monitoring Equipment, LED Lighting Controllers, Industrial Sensor Signal Conditioning, Small Appliance Control Boards, Building Automation and HVAC.
Battery-Powered IoT Sensor Nodes
The PIC24F16KM202-I/SP's eXtreme Low Power (XLP) technology delivers nanoamp-range sleep currents that let battery-powered IoT sensor nodes achieve multi-year lifetimes on coin cells. Its 32 MHz/16 MIPS core is more than sufficient for periodic sensor reads, threshold checks, and LoRa/Sigfox/UART wake-up bursts. The 16 KB Flash hosts small protocol stacks (Modbus, MQTT-SN) while 2 KB RAM buffers sensor frames. Integrated 12-bit ADC with up to 16 channels reads multiple sensors (temperature, humidity, battery voltage) without extra ICs. On-chip op-amps condition bridge sensors directly into the ADC, eliminating external amplifier cost and reducing PCB area. The 1.8-5.5 V supply accepts single-cell Li-ion, two-cell alkaline, and 3.3 V system rails.
Recommended
Portable Health Monitoring Equipment
Portable medical and fitness devices demand low noise, low power, and small footprint - exactly what the PIC24F16KM202-I/SP delivers. The 12-bit ADC samples photoplethysmography (PPG) and temperature signals with the on-chip 1.024 V reference providing a stable conversion baseline. The integrated op-amps amplify small biopotential signals (e.g., ECG electrodes) directly into the ADC without external amplifier stages, reducing BOM cost. XLP sleep modes drop current to nanoamp levels between measurements, preserving battery life on wearable form factors. The SPDIP-28 package is well suited for prototype medical devices where through-hole assembly aids serviceability and field replacement in regulated medical product lifecycles.
Recommended
LED Lighting Controllers
The PIC24F16KM202-I/SP is well matched to LED lighting controllers because it integrates the multiple Capture/Compare/PWM (SCCP) and Output Compare modules needed for color-mixing RGBW channels. The 12-bit ADC reads ambient light sensors for daylight harvesting, and the 8-bit DAC provides dimming reference levels. The Configurable Logic Cell (CLC) implements state machines for on/off timing and color transitions in hardware, freeing the CPU for higher-level tasks like DMX512 or DALI protocol parsing over UART. XLP modes drop standby consumption below 1 µA, satisfying Energy Star and EU Ecodesign standby limits for connected lighting.
Recommended
Industrial Sensor Signal Conditioning
Industrial 4-20 mA loop transmitters, RTD signal conditioners, and bridge sensor front-ends benefit from the PIC24F16KM202-I/SP's integrated analog chain. On-chip op-amps condition low-level sensor signals before the 12-bit ADC, eliminating external instrumentation amplifiers. Comparators provide threshold detection for alarm outputs without software polling. The CLC peripheral implements hardware debouncing and pulse-stretching for digital inputs from limit switches or proximity sensors. The 1.8-5.5 V supply range accepts both 3.3 V digital rails and legacy 5 V industrial loops, and the -40°C to +85°C industrial temperature rating covers factory-floor deployment.
Recommended
Small Appliance Control Boards
Coffee machines, washing machines, and kitchen appliances need a low-cost MCU with motor-control PWM, ADC for temperature/level sensing, and UART for user-interface display modules - all delivered by the PIC24F16KM202-I/SP. The multiple PWM channels drive brushless DC or universal motors for pumps and valves, while the 12-bit ADC reads thermistors and water-level sensors. The CLC peripheral implements safety interlocks in hardware, ensuring the motor stops deterministically even if the firmware hangs. UART/SPI connects to HMI displays or wireless modules, and the 1.8-5.5 V supply accepts rectified mains-derived 5 V or 3.3 V rails directly.
Recommended
Building Automation and HVAC
Building automation controllers such as VAV damper actuators, thermostats, and HVAC zone controllers benefit from the PIC24F16KM202-I/SP's analog integration and low power. The 12-bit ADC reads temperature, humidity, and pressure sensors with the internal 1.024 V reference providing ratiometric conversion for thermistors. The 8-bit DAC drives 0-10 V analog outputs for legacy HVAC actuators, eliminating external DAC chips. UART/I²C/SPI interfaces to BACnet, Modbus, or proprietary building-automation networks. XLP sleep modes drop standby consumption below 1 µA, satisfying energy-harvesting wireless sensor requirements. The industrial -40°C to +85°C temperature range handles unconditioned mechanical-room environments.
Recommended
Recommended Products Summary
Engineering reference data for PIC24F16KM202-I/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24F16KM202-I/SO | PIC24F16KM202-E/SP | PIC24F16KL402-E/SP |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SPDIP-28 | SOIC-28 | SPDIP-28 | SPDIP-28 |
| Program Memory (Flash) | 16 KB | 16 KB | 16 KB | 16 KB |
| Data RAM | 2 KB | 2 KB | 2 KB | 2 KB |
| Maximum CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS |
| 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 5.5 V |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +125C (Extended) |
| XLP Low Power | Yes | Yes | Yes | Yes (KL improved) |
Key Differentiators
- Highest analog integration in PIC24F XLP line (vs PIC24F16KL402-E/SP)
- Extended temperature grade option (vs PIC24F16KM202-I/SP)
- Doubled Flash and RAM option in same package (vs PIC24F08KM102-I/SO)
Design Notes
Estimated: the PIC24F16KM202 draws <1 µA in XLP sleep mode but ~5 mA at 32 MHz full MIPS. For battery-powered designs, spend >99% of time in sleep with periodic RTCC wake-up. Use Sleep + WDT or Sleep + external interrupt as the primary wake source. Decouple VDD with a 100 nF ceramic close to each VDD pin (the SPDIP-28 has two VDD pins: 10 and 20) plus a bulk 1-10 µF tantalum. Always tie all VDD pins, even if some are not used internally, to avoid floating-supply current leakage.
Route the analog supply (AVDD/AVSS, even if tied to VDD/VSS) with separate traces from the digital supply to keep ADC noise below 1 LSB. Place the 100 nF + 10 µF decoupling capacitors within 5 mm of the supply pins. Keep the 32 MHz oscillator traces short (less than 5 mm) and surround with a ground guard ring. The 28-pin SPDIP-28 has generous pin-to-pin spacing (2.54 mm), simplifying manual routing and breadboard prototyping compared to QFN packages.
To minimize ADC noise, add a small RC filter (100 Ω + 100 nF) on each analog input. Use the internal 1.024 V voltage reference rather than VDD as the ADC reference for ratiometric measurements. Average 16-64 ADC samples in software for noise reduction. The on-chip op-amps can buffer high-impedance sensors directly into the ADC, eliminating external amplifier stages and improving common-mode rejection by 10-20 dB in mixed-signal environments.
Never exceed 6 V on VDD - the absolute maximum rating is 6 V and overvoltage will permanently damage the part. Reserve RB0 (PGED1) and RB1 (PGEC1) for in-circuit debugging even in production designs; routing them to user peripherals will prevent field firmware updates. Do not omit the 1 µF bulk capacitor on VDD - the XLP modes draw microamp-level currents that interact with supply impedance. Finally, always set unused I/O pins as outputs (not inputs) to avoid floating-pin current consumption.
Compliance Information
RoHS and REACH compliance per Microchip product page. Not AEC-Q100 qualified - automotive designs should select the PIC24F16KM202-E/SP (extended temp) and verify with Microchip FAEs. Halogen-free status not explicitly stated in available data.
