PIC24F08KA102-I/SP - 16-bit 32MHz XLP MCU 8KB Flash SPDIP-28 | Microchip
MPN: PIC24F08KA102-I/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.55 | $25.50 |
| 100 | $2.27 | $227.00 |
| 500 | $2.04 | $1,020.00 |
| 1,000 | $1.82 | $1,820.00 |
PIC24F08KA102-I/SP Overview
A 16-bit microcontroller (MCU) is a programmable processor with a 16-bit data path, instruction word, and register architecture, occupying a middle tier between 8-bit MCUs (PIC16, 8051) and 32-bit Cortex-M parts. Within the broader taxonomy, the PIC24 sits inside the PIC24F sub-family (Flash, XLP low-power), itself part of Microchip's 16-bit PIC portfolio. MCUs integrate CPU, non-volatile program memory, volatile data memory, and peripherals onto a single die, making them the central programmable element of embedded products from sensor nodes to industrial controllers.
Key features of the PIC24F08KA102-I/SP include 16 MIPS sustained throughput at 32 MHz, 24 general-purpose I/O pins, a 10-bit ADC with up to 9 channels, three 16-bit timers, a Real-Time Clock Calendar (RTCC) with its own low-power oscillator, deep-sleep peripherals (DSBOR, DSWDT), and serial interfaces including UART, SPI, and I2C. The nanoWatt XLP technology enables deep-sleep currents in the nanoamp range, making this part well-suited to battery applications where quiescent draw dominates lifetime.
The architecture is built around a modified Harvard CPU with a 16-bit wide datapath and 24-bit instructions, supported by a deterministic interrupt controller and a peripheral pin-select (PPS) routing matrix. This design balances deterministic real-time response with the peripheral flexibility required by mixed-signal embedded designs.
Typical applications include battery-powered sensor nodes, wearable health monitors, remote IoT telemetry, industrial HVAC controllers, low-power wireless sensor platforms (acting as a host MCU), and consumer remote controls. The XLP current budget extends coin-cell lifetime from months to years in duty-cycled designs.
When designing with this part, pay attention to the VDDCORE decoupling requirement (typically 10 µF + 0.1 µF), the RTCC crystal selection for low-power accuracy, and the configuration bit lock sequence. The PPS module simplifies PCB routing but introduces a register-write requirement at startup.
This page synthesizes distributor pricing tiers, drop-in same-package alternatives from the PIC24F08KA family and competitor cross-references, application companions, and practical design notes that go beyond the bare Microchip datasheet content.
Drop-in alternatives for PIC24F08KA102-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 PIC24F08KA102-I/SP (same form factor and footprint) — differing in ADC, Core Architecture, Package, I/O Pins, Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24F08KA102-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.78 / Unit
View Datasheet →PIC24F08KA102-E/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.85 / Unit
View Datasheet →PIC24F08KA102-E/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.76 / Unit
View Datasheet →PIC24F08KA101-I/P
✅ Drop-In✓ In Stock
$2.45 / Unit
View Datasheet →PIC24F04KA201-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.78 / Unit
View Datasheet →PIC24F08KA102-I/SP Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24 (16-bit modified Harvard, 24-bit instructions) |
| Maximum CPU Clock | 32 MHz |
| Sustained Performance | 16 MIPS |
| Flash Program Memory | 8 KB (2.75K x 24) |
| Data SRAM | 1.5 KB (1536 bytes) |
| Data EEPROM | 512 bytes |
| Operating Voltage | 2.0 V to 3.6 V (typical 3.3 V) |
| I/O Pins | 24 GPIO |
| ADC | 10-bit, up to 9 channels |
| Timers | Three 16-bit Timer/Counter modules |
| Communication | UART, SPI, I2C |
| RTCC | Real-Time Clock Calendar with dedicated 32 kHz oscillator |
| Low-Power Features | nanoWatt XLP, deep-sleep (DSBOR, DSWDT), Sleep/Idle/Deep Sleep modes |
| Operating Temperature | -40 °C to +85 °C (Industrial, I-suffix) |
| Package | 28-pin SPDIP (Skinny Plastic DIP, through-hole) |
| Mounting Type | Through Hole |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| Peripheral Pin Select | Yes (PPS) |
PIC24F08KA102-I/SP Pin Configuration
| Pin 1 | MCLR — Master Clear (reset) input, active low |
| Pin 2 | RA0 — Port A bit 0 / analog input |
| Pin 3 | RA1 — Port A bit 1 / analog input |
| Pin 4 | RB0 — Port B bit 0 / analog input / IOC |
| Pin 5 | RB1 — Port B bit 1 / analog input / IOC |
| Pin 6 | RB2 — Port B bit 2 / analog input |
| Pin 7 | RB3 — Port B bit 3 / analog input |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RA2 — Port A bit 2 / analog input |
| Pin 10 | RA3 — Port A bit 3 / analog input / VREF+ |
| Pin 11 | RC0 — Port C bit 0 / analog input |
| Pin 12 | RC1 — Port C bit 1 / analog input |
| Pin 13 | VDD — Positive supply voltage |
| Pin 14 | RC2 — Port C bit 2 / analog input |
| Pin 15 | RA4 — Port A bit 4 |
| Pin 16 | RA5 — Port A bit 5 |
| Pin 17 | RA6 — Port A bit 6 / OSC2 |
| Pin 18 | RA7 — Port A bit 7 / OSC1 |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDDCORE — Internal regulator output, decouple to VSS |
| Pin 21 | RB4 — Port B bit 4 / SDA (I2C data) |
| Pin 22 | RB5 — Port B bit 5 / SCL (I2C clock) |
| Pin 23 | RB6 — Port B bit 6 / ICS PGC |
| Pin 24 | RB7 — Port B bit 7 / ICS PGD |
| Pin 25 | RC3 — Port C bit 3 / analog input |
| Pin 26 | RC4 — Port C bit 4 / analog input |
| Pin 27 | RC5 — Port C bit 5 / analog input |
| Pin 28 | VDD — Positive supply voltage |
Typical Applications
PIC24F08KA102-I/SP is suitable for 6 applications: Battery-Powered Wireless Sensor Node, Wearable Health Monitor, Industrial HVAC Controller, Low-Power IoT Telemetry Device, Consumer Remote Control / HID Device, Smart Sensor / Data Logger.
Battery-Powered Wireless Sensor Node
The PIC24F08KA102-I/SP fits battery-powered wireless sensor nodes where the nanoWatt XLP deep-sleep current (typically <1 µA with RTCC running) determines coin-cell lifetime. With 8 KB Flash accommodating the radio driver plus sensor sampling stack, 1.5 KB SRAM for buffering, and 24 GPIO for multiple sensors and an SPI-attached radio (e.g., Sub-GHz transceiver), this MCU can duty-cycle to <1% active time and achieve 3-10 year battery life from a single CR2032. The 10-bit 9-channel ADC handles analog sensor channels, and the RTCC timestamps samples without waking the CPU. The 3.3 V rail aligns with most wireless SoCs, simplifying power-tree design.
Recommended
Wearable Health Monitor
The PIC24F08KA102-I/SP supports wearable health monitors where small size and battery life outweigh peak throughput. Its 16 MIPS at 32 MHz handles heart-rate and SpO2 sampling loops, while deep-sleep between heartbeats reduces average current to tens of µA. The RTCC and 32 kHz crystal keep accurate time across sleep cycles for timestamping events, the 24 GPIO drive LEDs and buttons, and the I2C bus connects to optical biosensors. The 3.3 V supply matches Li-ion or coin-cell batteries directly. Compared with 32-bit parts, the PIC24F08KA102-I/SP trades raw performance for simpler toolchains, deterministic interrupt latency, and excellent low-power sleep behavior.
Recommended
Industrial HVAC Controller
In industrial HVAC control panels the PIC24F08KA102-I/SP provides the digital control backbone for thermostat loops, fan control, and communication with upstream building automation networks. The 16-bit PIC24 core executes PID loops at sufficient rate for thermal regulation, 8 KB Flash holds the control firmware, and 24 GPIO directly drive triacs, relays, and keypads. The 10-bit ADC samples temperature sensors and current feedback, the UART connects to RS-485 transceivers, and the SPI drives segment LCD or graphical displays. Industrial -40 °C to +85 °C temperature range and 3.3 V tolerance of noisy 24 VAC-derived rails suit HVAC environments. The XLP sleep mode reduces standby power when the system is idle.
Recommended
Low-Power IoT Telemetry Device
The PIC24F08KA102-I/SP serves as the host MCU in low-power IoT telemetry devices that push periodic measurements to a gateway over UART, SPI, or I2C radios. Its nanoWatt XLP technology enables years-long battery operation in duty-cycled reporting applications such as remote utility meters, agricultural soil sensors, and asset trackers. The 8 KB Flash is sufficient for the firmware plus a small TLS or LoRaWAN stack on radios that offload cryptographic functions, and 1.5 KB SRAM buffers transmit packets. The Peripheral Pin Select (PPS) feature allows flexible PCB routing of UART/SPI/I2C to any GPIO, simplifying RF board layout. The 3.3 V supply rail matches mainstream IoT radios without level shifting.
Recommended
Consumer Remote Control / HID Device
The PIC24F08KA102-I/SP fits consumer remote controls, RF key fobs, and Human Interface Devices where battery life and small BOM matter most. Its deep-sleep current in the nanoamp range extends coin-cell life for years, while wake-on-button-press consumes only microseconds. The 16 MIPS CPU handles IR, BLE host, or proprietary RF protocols, and 8 KB Flash accommodates the protocol stack and button decoding logic. The 24 GPIO drive LED indicators, key matrices, and piezo buzzers directly. Compared with 8-bit PIC16 alternatives, the PIC24F08KA102-I/SP offers higher throughput for complex RF protocols while keeping the BOM minimal.
Recommended
Smart Sensor / Data Logger
The PIC24F08KA102-I/SP forms the heart of smart sensor and data logger modules that record slow-changing analog or digital signals over long periods. With 512 bytes of EEPROM for non-volatile parameter storage, 8 KB Flash for logging firmware, and 1.5 KB SRAM for sample buffers, the device can timestamp and store data between uploads. The RTCC provides a 1-second time base independent of the main oscillator, the 10-bit ADC digitizes analog channels, and the UART/SPI/I2C interfaces dump data to a host. The nanoWatt XLP deep-sleep current extends battery life in remote field deployments where the device wakes only at scheduled logging intervals.
Recommended
Recommended Products Summary
Engineering reference data for PIC24F08KA102-I/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24F08KA102-I/ML | PIC24F08KA102-E/SO | PIC24F08KA102-E/ML | PIC24F08KA101-I/P | PIC24F04KA201-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SPDIP-28 (SP) | QFN-28 (ML) | SOIC-28 (SO) | QFN-28 (ML) | PDIP-28 (P) | SOIC-20 (SO) |
| Core | PIC24 (16-bit) | PIC24 (16-bit) | PIC24 (16-bit) | PIC24 (16-bit) | PIC24 (16-bit) | PIC24 (16-bit) |
| Maximum Clock | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Flash | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 4 KB |
| SRAM | 1.5 KB | 1.5 KB | 1.5 KB | 1.5 KB | 1 KB | 0.5 KB |
| EEPROM | 512 B | 512 B | 512 B | 512 B | 512 B | 0 B (none) |
| Operating Temperature | -40 to +85 °C (I-suffix) | -40 to +85 °C | -40 to +125 °C (E-suffix) | -40 to +125 °C | -40 to +85 °C | -40 to +85 °C |
| XLP Deep Sleep | Yes (<1 µA typical) | Yes | Yes | Yes | Yes | Yes (less deep) |
Key Differentiators
- nanoWatt XLP deep-sleep with DSBOR/DSWDT (vs PIC24F04KA201-I/SO)
- RTCC with dedicated 32 kHz oscillator (vs PIC24F08KA101-I/P)
- 8 KB Flash / 1.5 KB SRAM in 28-pin package (vs PIC24F08KA101-I/P)
Design Notes
The PIC24F08KA102-I/SP requires a dedicated VDDCORE decoupling network per the Microchip documentation: a 10 µF ceramic (or tantalum) bulk capacitor plus a 0.1 µF ceramic placed as close as possible to the VDDCORE pin (pin 20) with a short trace to the adjacent VSS pin. Estimated: with no VDDCORE decoupling, internal regulator stability is compromised and the device may brown-out at high CPU speeds. A 4.7 µF minimum is required even for low-speed operation; do not omit VDDCORE bulk capacitance.
Place the 32.768 kHz RTCC crystal (typically ECS-.327-12.5 or equivalent) within 5 mm of the SOSCO/SOSCI pins with short traces and a guard ring tied to analog ground to minimize noise coupling into the RTCC timing. Keep high-speed digital traces (PWM, switching converter feedback) away from the crystal traces. Estimated: each 1 pF of stray capacitance on SOSCO/SOSCI introduces roughly 0.5 ppm of frequency error - layout matters more than crystal tolerance in many designs.
Configuration bits (FOSC, FWDT, etc.) must be set in code before the MCU will start correctly; an unconfigured PIC24 will not execute user code at all. Always use #pragma config statements in source, or configure via MPLAB X IDE before programming. Estimated: roughly 20% of first-time PIC24 designs fail because the configuration bits were never written. Also verify the MCLR pin is pulled high through a 10 kΩ resistor - leaving it floating prevents startup.
Use the Peripheral Pin Select (PPS) feature to remap UART/SPI/I2C to convenient GPIO pins, but remember the PPS unlock sequence (unlock register writes followed by PPS assignment) must execute after every POR. Route PPS-controlled signals to pins adjacent to VDD/VSS to minimize the high-frequency return loop. Estimated: bypassing PPS unlock via CFGCON unlock bit sequence is the most common reason 'silent' peripherals do not work on first hardware bring-up.
Compliance Information
RoHS compliant and lead-free per Microchip product page and Verified Web Data. Industrial temperature grade only (I-suffix); not AEC-Q100 qualified - choose automotive-qualified PIC24 variants for vehicle applications.
