PIC24F08KA102T-I/SO - 8KB Flash XLP 16-bit MCU | Microchip
MPN: PIC24F08KA102T-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.18 | $3.18 |
| 10 | $2.85 | $28.50 |
| 100 | $2.46 | $246.00 |
| 500 | $2.21 | $1,105.00 |
| 1,000 | $1.94 | $1,940.00 |
PIC24F08KA102T-I/SO Overview
A 16-bit microcontroller (MCU) is an integrated circuit combining a CPU core, program memory (Flash), data memory (RAM), and peripheral set on a single die. The PIC24F family uses Microchip's modified Harvard architecture with a 16-bit data path, which delivers higher code density and arithmetic throughput than 8-bit MCUs while retaining deterministic interrupt response. Within Microchip's hierarchy, the PIC24F sits between the PIC18F (8-bit) and dsPIC33/PIC24H (16-bit with DSP) families, and the PIC24F08KA102T-I/SO belongs to the KA1 sub-family optimized for ultra-low-power applications.
Key specifications include a 1.8V to 3.6V operating voltage, four 16-bit timers, two analog comparators, one 9-channel 10-bit ADC (500 ksps), two UART/SPI/I2C configurable serial interfaces, and 24 general-purpose I/O pins. The XLP feature set includes deep sleep mode, DSBOR (deep-sleep brown-out reset), DSWDT (deep-sleep watchdog timer), and a real-time clock calendar (RTCC) running from a 32kHz crystal. Typical active current is 250 µA/MIPS and deep-sleep current is as low as 20 nA.
The MCU is built on a CMOS process with on-chip FRC (Fast RC) and LPRC (Low-Power RC) oscillators, supporting operation without external clock components. Hardware peripherals include a charge time measurement unit (CTMU) for capacitive touch sensing and a parallel master port for external bus expansion.
Typical applications include portable medical sensors, IoT edge nodes, wireless sensor transmitters, remote controls, utility metering, and battery-backed wearables. The combination of deep-sleep nanoamp currents and 16 MIPS throughput enables always-on sensor reading with periodic wake-up.
When designing with this device, prioritize minimizing active duty cycle - the XLP advantage is realized only when firmware spends most of its time in deep sleep. Place the 32kHz crystal close to SOSCO/SOSCI pins and use proper decoupling (100 nF + 10 µF) on VDD to keep noise off the ADC reference.
This page combines current distributor pricing, drop-in alternatives, and design notes to help engineers evaluate the PIC24F08KA102T-I/SO against competing MCUs.
Drop-in alternatives for PIC24F08KA102T-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 PIC24F08KA102T-I/SO (same form factor and footprint) — differing in Package, ADC, Core Architecture, Timers, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24F08KA102-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24F08KA102T-I/SS
✅ Drop-In✓ In Stock
$2.25 / Unit
View Datasheet →PIC24F04KA201-I/SO
✅ Drop-In✓ In Stock
$1.78 / Unit
View Datasheet →PIC24F04KL101-I/SO
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC24F08KA102-I/SS
✅ Drop-In✓ In Stock
$2.05 / Unit
View Datasheet →PIC24F08KA102T-I/SO Maximum Ratings & Electrical Characteristics
| Core | PIC24F (16-bit modified Harvard) |
| Program Memory (Flash) | 8 KB (2.75K x 24) |
| Data RAM | 1 KB |
| EEPROM | 512 B |
| Maximum CPU Speed | 32 MHz / 16 MIPS |
| Operating Voltage (VDD) | 1.8 V to 3.6 V |
| Package | 28-SOIC (7.50 mm width, 0.295") |
| Pin Count | 28 |
| I/O Pins | 24 |
| ADC | 1 x 10-bit, 9 channels, 500 ksps |
| Analog Comparators | 2 |
| Timers | 4 x 16-bit |
| Serial Interfaces | 2 x UART/SPI/I2C (configurable) |
| RTCC | Yes (with 32 kHz crystal) |
| Charge Time Measurement Unit (CTMU) | Yes (capacitive touch support) |
| Operating Temperature | -40 °C to +85 °C (Industrial) |
| Mounting Type | Surface Mount |
| MSL Level | 1 |
| RoHS Status | Compliant |
PIC24F08KA102T-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 / CVREF+ |
| Pin 4 | RA3 — Digital I/O / analog input AN3 |
| Pin 5 | RA4 — Digital I/O / analog input AN4 / SOSCO |
| Pin 6 | RA5 — Digital I/O / analog input AN5 / SOSCI |
| Pin 7 | RA6 — Digital I/O / oscillator output |
| Pin 8 | RA7 — Digital I/O / oscillator input |
| Pin 9 | VSS — Ground reference |
| Pin 10 | OSC1 — External clock input / RA7 |
| Pin 11 | OSC2 — External clock output / RA6 |
| Pin 12 | VDD — Positive supply voltage |
| Pin 13 | RB0 — Digital I/O / AN6 |
| Pin 14 | RB1 — Digital I/O / AN7 |
| Pin 15 | RB2 — Digital I/O / AN8 |
| Pin 16 | RB3 — Digital I/O / AN9 |
| Pin 17 | RB4 — Digital I/O |
| Pin 18 | RB5 — Digital I/O |
| Pin 19 | RB6 — Digital I/O / programming clock |
| Pin 20 | RB7 — Digital I/O / programming data |
| Pin 21 | RC0 — Digital I/O |
| Pin 22 | RC1 — Digital I/O |
| Pin 23 | RC2 — Digital I/O |
| Pin 24 | RC3 — Digital I/O |
| Pin 25 | RC4 — Digital I/O |
| Pin 26 | RC5 — Digital I/O |
| Pin 27 | RC6 — Digital I/O |
| Pin 28 | RC7 — Digital I/O |
Typical Applications
PIC24F08KA102T-I/SO is suitable for 6 applications: Battery-Powered IoT Sensor Node, Portable Medical Wearable, Wireless HVAC Remote Control, Capacitive Touch User Interface, Smart Utility Meter Edge Node, Industrial Sensor Hub.
Battery-Powered IoT Sensor Node
The PIC24F08KA102T-I/SO is a strong fit for battery-powered IoT sensor nodes because its 20 nA deep-sleep current and integrated 10-bit ADC enable multi-year coin-cell operation. With 8KB Flash and 1KB RAM, it can host a small BLE/Zigbee transceiver via UART, periodically wake to read sensors, and return to deep sleep. The 1.8V-3.6V VDD range accepts single-cell lithium-thionyl-chloride primary cells directly without boost circuitry. Recommended companion: RN4870 Bluetooth module for wireless uplink.
Recommended
Portable Medical Wearable
For portable medical wearables such as heart-rate or pulse-oximetry patches, the PIC24F08KA102T-I/SO provides a balance of low power, small footprint, and deterministic interrupt response. The CTMU enables capacitive-touch user interface without extra ICs, while the 10-bit ADC digitizes analog photodiode signals from optical heart-rate sensors. Deep-sleep currents below 800 nA with calendar keep the wearable alive for weeks on a small Li-ion cell. Recommended companion: ADPD1080 photoplethysmographic sensor.
Recommended
Wireless HVAC Remote Control
The PIC24F08KA102T-I/SO is well-suited to wireless HVAC remote controls because its XLP deep-sleep mode and RTCC calendar preserve battery life for months while the device waits in standby. The two configurable UART/SPI/I2C ports support both a sub-GHz RF transceiver and a segmented LCD or LED display driver. With 24 GPIO pins, the MCU directly scans 4x4 keypads without an I/O expander. Recommended companion: CC1101 sub-GHz transceiver for RF link.
Recommended
Capacitive Touch User Interface
For capacitive touch user interfaces on appliances and consumer electronics, the PIC24F08KA102T-I/SO integrates a Charge Time Measurement Unit that scans up to 9 touch electrodes without external touch ICs. Combined with the Microchip mTouch library, designers can implement sliders, buttons, and proximity sensing while running the CPU in deep sleep most of the time. The 32MHz MIPS performance handles debouncing, gesture recognition, and LED feedback in real time. Recommended companion: CAP1206 capacitive touch controller as fallback.
Recommended
Smart Utility Meter Edge Node
The PIC24F08KA102T-I/SO suits smart utility metering edge nodes that aggregate sensor data and forward it periodically to a concentrator. The 9-channel ADC reads multiple analog sensors (temperature, pressure, flow), while the two serial ports drive both an isolated M-Bus interface and a backup serial debug link. The RTCC with 32kHz crystal provides accurate timestamping for billing-grade logs. Recommended companion: MAX31865 RTD digitizer for temperature measurement.
Recommended
Industrial Sensor Hub
For industrial sensor hubs in factory automation, the PIC24F08KA102T-I/SO provides reliable -40C to +85C industrial temperature operation, multi-protocol serial connectivity, and analog comparator-based over-voltage detection. The two analog comparators enable direct threshold protection without external op-amps. Its 8KB Flash accommodates Modbus and IO-Link stack layers for protocol bridging. Recommended companion: MAX14840E RS-485 transceiver for noisy industrial buses.
Recommended
Recommended Products Summary
Engineering reference data for PIC24F08KA102T-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24F08KA102-I/SO | PIC24F08KA102T-I/SS | PIC24F04KA201-I/SO | PIC24F04KL101-I/SO | PIC24F08KA102-I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC | 28-SOIC | 28-SOIC | 28-SOIC | 28-SOIC | 28-SSOP |
| Flash Memory | 8 KB | 8 KB | 8 KB | 4 KB | 4 KB | 8 KB |
| RAM | 1 KB | 1 KB | 1 KB | 0.5 KB | 1 KB | 1 KB |
| 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 |
| CTMU (Capacitive Touch) | Yes | Yes | Yes | Yes | No | Yes |
| Deep-Sleep Current | 20 nA (typ) | 20 nA | 20 nA | 20 nA | 20 nA | 20 nA |
| Operating Temperature | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C |
Key Differentiators
- Tape-and-reel factory packaging for high-volume SMT lines (vs PIC24F08KA102-I/SO)
- Double the Flash for richer firmware features (vs PIC24F04KA201-I/SO)
- Integrated CTMU capacitive touch without external touch IC (vs PIC24F04KL101-I/SO)
Design Notes
Achieve datasheet-level 20 nA deep-sleep current by disabling all unused peripherals in firmware and configuring unused pins as digital outputs driving low (not high-Z). Configure the FRC and LPRC oscillators to power-down in deep sleep and enable the deep-sleep BOR (DSBOR) for safe wake-up from brownout conditions. The on-chip regulator's retention mode keeps the RTCC alive without the main core logic powered.
Place the 32.768 kHz crystal as close as possible to SOSCO/SOSCI (RA4/RA5) pins with short traces and a ground guard ring to minimize coupling from switching nodes. Use a 100 nF ceramic decoupling capacitor within 3 mm of every VDD pin, plus a single 10 uF bulk capacitor near the package. Keep ADC analog traces away from PWM and digital switching signals to prevent ADC noise coupling on low-voltage analog sensor readings.
Do not assume the internal FRC oscillator is accurate to better than ±2% across temperature - applications requiring accurate UART baud rates or ADC timing should switch to the 32 kHz secondary crystal or an external high-frequency crystal. Always configure the watchdog timer (DSWDT) before enabling deep sleep, otherwise a watchdog timeout cannot wake the MCU. Verify that the programming/debug pins (RB6/RB7) are not loaded with more than 5 pF when using ICSP, or the debugger will fail to communicate.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified; for automotive designs use PIC24F/KA AEC-Q100 variants.
