PIC24F16KM202-I/SO - 16-bit XLP MCU, 32MHz, 16KB Flash | Microchip
MPN: PIC24F16KM202-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.2 | $3.20 |
| 10 | $2.92 | $29.20 |
| 100 | $2.6 | $260.00 |
| 500 | $2.31 | $1,155.00 |
| 1,000 | $2.05 | $2,050.00 |
PIC24F16KM202-I/SO Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and a configurable peripheral set behind a unified bus architecture. Microcontrollers are the highest-volume category of embedded processors and sit within the broader semiconductor taxonomy as follows: microcontroller -> embedded processor -> integrated circuit. The PIC24F family is built on a 16-bit modified Harvard architecture targeting low-power deterministic control.
Key features of the PIC24F16KM202 include the company's eXtreme Low-Power (XLP) technology with deep-sleep currents below 100 nA typical, 32 MHz operation from a 1.8-3.6V supply, multiple Capture/Compare/PWM (SCCP) and Master CCP modules, hardware RTCC with calendar mode, USB Full-Speed on some family variants, and a 16-bit Parallel Master Port. The 28-SOIC package exposes up to 25 GPIO, three 16-bit timers, two UART, two SPI, and two I2C peripherals simultaneously.
From an architecture standpoint, the device uses a 16-bit modified Harvard core with separate program and data paths and a 17-word instruction prefetch queue, enabling near-single-cycle throughput at 32 MHz (16 MIPS). The integrated op-amp and DAC peripherals allow direct analog signal conditioning without external components, while the CLC block implements combinational/sequential logic glue to reduce external gates.
Typical applications include eXtreme low-power sensor nodes, IoT edge devices, portable medical instrumentation, battery-powered consumer products, and digital power-conversion control loops. The wide operating voltage range (1.8V-3.6V) supports direct Li-Ion cell operation without additional regulation.
When designing with this MCU, ensure that VDDCORE and VDD are decoupled per Microchip's recommended layout, that the programming/debug pins are accessible for ICSP, and that the system's worst-case active current budget is verified against the device's 32 MHz run current of about 7 mA. Use the MPLAB XC16 compiler and MPLAB X IDE for code development.
This page consolidates distributor pricing, same-brand drop-in alternatives, and application design notes that complement the manufacturer datasheet.
Drop-in alternatives for PIC24F16KM202-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 PIC24F16KM202-I/SO (same form factor and footprint) — differing in ADC, Core Architecture, Package, Program Memory (Flash), Low-Power Technology.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24F16KM202-E/SO
✅ Drop-In✓ In Stock
$2.1 / Unit
View Datasheet →PIC24F16KM104-I/PT
✅ Drop-In✓ In Stock
$2.52 / Unit
View Datasheet →PIC24F16KA302T-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.6 / Unit
View Datasheet →PIC24F08KM202T-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.65 / Unit
View Datasheet →PIC24F16KL402-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.21 / Unit
View Datasheet →PIC24EP32MC202-I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24F16KM202-I/SO Maximum Ratings & Electrical Characteristics
| Product Family | PIC24F XLP 16-bit Microcontroller |
| Core Architecture | 16-bit Modified Harvard, 32 MHz / 16 MIPS |
| Program Memory | 16 KB Flash (5.5K x 24 instructions) |
| Data SRAM | 2 KB |
| EEPROM | 512 bytes |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Package Type | 28-pin SOIC (SO), 300 mil |
| ADC | 12-bit, up to 16 channels |
| DAC | 8-bit, 1 channel |
| Comparators | Yes (dual) |
| Operational Amplifiers | Yes (rail-to-rail, integrated) |
| Configurable Logic Cell | Yes (CLC) |
| Timers | Multiple 16-bit (SCCP + MCCP modules) |
| Communication Interfaces | 2x UART, 2x SPI, 2x I2C |
| GPIO | Up to 25 I/O pins |
| MSL Level | 1 |
| RoHS Status | Compliant |
PIC24F16KM202-I/SO Pin Configuration
| Pin 1 | RA2 — General I/O / analog input |
| Pin 2 | RA3 — General I/O / analog input |
| Pin 3 | RA4 — General I/O / analog input |
| Pin 4 | RA5 — General I/O / analog input |
| Pin 5 | VDD — Positive supply (1.8-3.6 V) |
| Pin 6 | VSS — Ground reference |
| Pin 7 | OSC1/CLKI/RA7 — Crystal oscillator input or GPIO |
| Pin 8 | OSC2/CLKO/RA8 — Crystal oscillator output or GPIO |
| Pin 9 | RA9 — General I/O / analog input |
| Pin 10 | RA10 — General I/O / analog input |
| Pin 11 | RB0 — General I/O / analog input |
| Pin 12 | RB1 — General I/O / analog input |
| Pin 13 | RB2 — General I/O / analog input |
| Pin 14 | RB3 — General I/O / analog input |
| Pin 15 | RB4 — General I/O / analog input |
| Pin 16 | RB5 — General I/O / analog input |
| Pin 17 | RB6 — General I/O / PGC (ICSP clock) |
| Pin 18 | RB7 — General I/O / PGD (ICSP data) |
| Pin 19 | RC0 — General I/O / analog input |
| Pin 20 | RC1 — General I/O / analog input |
| Pin 21 | RC2 — General I/O / analog input |
| Pin 22 | RC3 — General I/O / analog input |
| Pin 23 | RC4 — General I/O / analog input |
| Pin 24 | RC5 — General I/O / analog input |
| Pin 25 | RC6 — General I/O / analog input |
| Pin 26 | RC7 — General I/O / analog input |
| Pin 27 | MCLR — Master clear / reset input (active low) |
| Pin 28 | AVDD — Analog supply (tie to VDD) |
Typical Applications
PIC24F16KM202-I/SO is suitable for 6 applications: Battery-Powered IoT Sensor Nodes, Portable Medical Instrumentation, Digital Power Conversion Control Loops, Low-Power Industrial Sensor Interfaces, Wearable Fitness and Consumer Electronics, Automotive Body and Climate Modules.
Battery-Powered IoT Sensor Nodes
The PIC24F16KM202-I/SO is purpose-built for battery-powered IoT sensor nodes where every microamp counts. Its eXtreme Low Power (XLP) technology delivers deep-sleep currents below 100 nA typical, while the integrated 12-bit ADC, op-amps, and 8-bit DAC eliminate the external analog ICs that dominate BOM cost in sensor designs. A duty-cycled 1 Hz wake-up from RTCC keeps average current in the single-digit microamp range, suitable for multi-year battery life on a single coin cell. The 1.8-3.6V supply range allows direct Li-Ion or 2x AA operation without an LDO. Built-in CLC and Configurable Logic Cell replace discrete glue logic, shrinking board area further.
Recommended
Portable Medical Instrumentation
In portable medical instrumentation, the PIC24F16KM202-I/SO provides the deterministic 16-bit core required to drive precision analog signal paths. Its integrated 12-bit ADC plus rail-to-rail op-amps condition biomedical sensor outputs directly, while the 8-bit DAC can drive bias circuits or reference voltages. The XLP sleep modes help medical devices meet IEC 60601-1 power budgets and extend battery life on wearable health monitors. Deterministic interrupt latency from the 16 MIPS CPU keeps the device suitable for control-loop or pulse-oximetry sample timing. Industrial -40 to +85 C temperature rating ensures operation across clinical environments.
Recommended
Digital Power Conversion Control Loops
The PIC24F16KM202-I/SO excels in digital power conversion loops where PWM resolution and analog feedback matter. Its Master CCP modules generate high-resolution complementary PWMs for synchronous buck, boost, or PFC converters, while the 12-bit ADC and rail-to-rail op-amps implement current-mode and voltage-mode feedback. The 16 MIPS performance headroom handles average-current-mode control at typical 50-200 kHz switching frequencies with margin. XLP features help meet 80 Plus standby power targets, and the 28-SOIC package with 300-mil body is well suited to high-voltage clearance on the primary side.
Recommended
Low-Power Industrial Sensor Interfaces
For industrial sensor interfaces in 4-20 mA loops or RS-485 field wiring, the PIC24F16KM202-I/SO combines low power with industrial -40 to +85 C operation. Its integrated 12-bit ADC can digitize 4-20 mA current sense outputs directly, while dual UART channels handle RS-485 transceivers for industrial networks. Deep-sleep current under 100 nA supports Energy-harvested or loop-powered sensor installations. The CLC allows implementing protocol glue logic such as Modbus timing without external gates.
Recommended
Wearable Fitness and Consumer Electronics
The PIC24F16KM202-I/SO is well suited to wearable consumer devices where small PCB size and long battery life are both critical. The 28-SOIC package enables hand-solder-friendly prototypes while the XLP core minimizes drain on small Li-Po cells. Integrated op-amps and 8-bit DAC support haptic feedback drivers, LED brightness control, and analog front-ends for optical heart-rate sensors. Two SPI ports allow simultaneous connections to a display controller and a low-energy wireless module such as an RN4020 or BM70.
Recommended
Automotive Body and Climate Modules
Although the standard -I grade is industrial temperature, the PIC24F16KM202 family architecture is also deployed in non-safety automotive body and climate control modules. The integrated PWM modules drive HVAC blower motors, while the 12-bit ADC monitors cabin temperature and humidity. The CLC implements smart-fan-tachometer decoding without external logic. Designers targeting AEC-Q100 qualified variants should select the automotive-grade PIC24F family members, not the standard -I part described here.
Recommended
Recommended Products Summary
Engineering reference data for PIC24F16KM202-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24F16KM202-E/SO | PIC24F08KM202T-I/SO | PIC24F16KA302T-I/ML | PIC24F16KL402-I/ML |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SOIC-28 (300 mil) | SOIC-28 (300 mil) - same | SOIC-28 (300 mil) - same | QFN-28 (ML) | QFN-28 (ML) |
| Program Memory | 16 KB Flash | 16 KB Flash | 8 KB Flash | 8 KB Flash | 16 KB Flash |
| Data SRAM | 2 KB | 2 KB | 1 KB | 1 KB | 2 KB |
| EEPROM | 512 bytes | 512 bytes | 512 bytes | 512 bytes | 512 bytes |
| CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS |
| 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) | -40 C to +85 C (Industrial) |
| Integrated Op-Amps | Yes | Yes | Yes | Yes | No |
| Integrated DAC | 8-bit | 8-bit | 8-bit | 8-bit | None |
Key Differentiators
- Richest analog integration in the 28-pin PIC24F XLP family (vs PIC24F16KL402-I/ML)
- Industrial vs Extended temperature grade (vs PIC24F16KM202-E/SO)
- Half the Flash at the same footprint (vs PIC24F08KM202T-I/SO)
Design Notes
The PIC24F16KM202-I/SO supports deep-sleep currents below 100 nA typical, but achieving this requires turning off all peripherals, configuring unused pins as digital outputs with defined logic levels, and disabling unused clock domains. Use the PMDx peripheral-module-disable registers and the PMD bit fields in the device configuration. The RTCC module can wake the device at programmed intervals while consuming <1 uA, suitable for duty-cycled sensor designs. Always enable the on-chip voltage regulator's Sleep mode (SRETEN bit) to reach minimum standby current.
Place the 0.1 uF VDD-to-VSS decoupling capacitor within 5 mm of the VDD pin and route it directly to the chip-side ground via a wide short trace. Add a 10 uF bulk capacitor on the same VDD node to handle switching transients when the regulator is enabled. For analog-sensitive designs, keep the AVDD/VREF+ trace separate from the digital VDD and use a ferrite bead to isolate noise. Reserve space for a 4-pin ICSP header (MCLR, VDD, PGC, PGD) on the PCB so MPLAB debug tools can attach during bring-up.
Estimated: at 32 MHz CPU clock and 3.6 V supply, the active current is approximately 7 mA, rising to about 12 mA with all peripherals enabled. A common mistake is forgetting to disable unused peripherals on entry to Sleep - leaving the ADC or I2C active can pull 200-500 uA. Another pitfall is connecting the MCLR pin directly to VDD without a 10 kohm pull-up and decoupling, which may cause spurious resets in noisy environments. Lastly, do not skip the Configuration Bits setup; the default clock source after POR is the internal FRC and may not match the project's expected timing.
Compliance Information
RoHS/lead-free compliant per product listing. Not AEC-Q100 qualified - choose dedicated automotive-grade variants for automotive deployments. Halogen-free status not explicitly stated in the provided data.
