PIC24F08KA101-I/SO - 16-bit 32MHz XLP MCU 8KB Flash | Microchip
MPN: PIC24F08KA101-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.06 | $3.06 |
| 10 | $2.74 | $27.40 |
| 100 | $2.18 | $218.00 |
| 500 | $1.79 | $895.00 |
| 1,000 | $1.49 | $1,490.00 |
PIC24F08KA101-I/SO Overview
A 16-bit microcontroller (MCU) is a single-chip computer that integrates a CPU core, Flash program memory, SRAM data memory, EEPROM, and peripherals on one die. PIC24F devices use Microchip's modified Harvard RISC architecture with a 16-bit data path, 24-bit instruction word, and rich interrupt controller, occupying the mid-tier position between 8-bit PIC® MCUs and 32-bit ARM Cortex-M parts. They sit within the broader hierarchy of microcontroller -> embedded controller -> semiconductor, and are commonly deployed where deterministic real-time response, low power, and a small footprint are required.
Key features include 16 MIPS performance at 32MHz, 16-bit wide instructions, deep sleep peripherals (DSBOR, DSWDT, RTCC) that keep selected functions alive while the CPU sleeps, multiple low-power modes (idle, sleep, deep sleep), 17 I/O pins, a 10-bit ADC up to 300 ksps, two analog comparators, and serial interfaces including UART, SPI, and I²C. The CTMU peripheral supports capacitive touch sensing without an external IC. Operating voltage is 1.8V-3.6V with active current of about 250 µA/MIPS and deep sleep current under 20 nA typical.
The PIC24F08KA101 integrates an internal 8MHz RC oscillator with PLL, configurable oscillator modes, and peripheral pin select (PPS) for flexible signal routing. Its watchdog timer with on-chip low-power RC, brown-out reset, and 16-bit timers make it well suited to industrial-grade designs. The 20-SOIC package offers a wide operating temperature range of -40°C to +85°C (industrial) suitable for harsh-environment deployment.
Typical applications include battery-powered sensor nodes, wearable health monitors, IoT edge devices, remote controls, low-power wireless sensor transmitters, HVAC thermostats, smoke detectors, and portable consumer electronics. The wide supply range and nanoWatt XLP sleep modes deliver years of operation from a single coin cell.
When designing with this MCU, allocate adequate decoupling (100 nF + 1 µF ceramic) near VDD, place the ICSP™ programming header close to PGC/PGD pins, and verify that any unused I/O pins are configured as outputs low to minimize current draw. For noise-sensitive analog designs, place analog and digital grounds on a split plane tied at a single point.
This page synthesizes distributor pricing, drop-in alternatives, comparison data and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC24F08KA101-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 PIC24F08KA101-I/SO (same form factor and footprint) — differing in Core Architecture, ADC, Package, Operating Temperature, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24F16KA101-I/SO
✅ Drop-In✓ In Stock
$1.92 / Unit
View Datasheet →PIC24F04KA101-I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24F08KA101T-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24F08KA101-I/P
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.45 / Unit
View Datasheet →PIC24F04KA201-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.78 / Unit
View Datasheet →PIC24F04KL101-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.05 / Unit
View Datasheet →PIC24F08KA101-I/SO Maximum Ratings & Electrical Characteristics
| Product Family | PIC® XLP™ 24F |
| Core Architecture | 16-bit PIC® RISC |
| CPU Speed | 32 MHz |
| Performance | 16 MIPS |
| Flash Program Memory | 8 KB (2.75K × 24 instructions) |
| SRAM | 1 KB |
| EEPROM | 512 B |
| Supply Voltage | 1.8 V to 3.6 V |
| I/O Pins | 17 |
| Package | 20-pin SOIC (SO) |
| Operating Temperature | -40 °C to +85 °C (Industrial) |
| ADC | 10-bit, up to 300 ksps |
| Analog Comparators | 2 |
| Serial Interfaces | UART, SPI, I²C |
| Low-Power Modes | Idle, Sleep, Deep Sleep (DSBOR/DSWDT/RTCC) |
| CTMU Peripheral | Yes (capacitive touch support) |
| Peripheral Pin Select (PPS) | Yes |
| Watchdog Timer | Yes, with on-chip low-power RC |
| RoHS Status | Compliant |
PIC24F08KA101-I/SO Pin Configuration
| Pin 1 | RA0 — Digital I/O / analog input |
| Pin 2 | RA1 — Digital I/O / analog input |
| Pin 3 | RB0 — Digital I/O / programming clock (PGC) |
| Pin 4 | RB1 — Digital I/O / programming data (PGD) |
| Pin 5 | RB2 — Digital I/O |
| Pin 6 | RB3 — Digital I/O |
| Pin 7 | VSS — Ground |
| Pin 8 | RA2 — Digital I/O / analog input / VREF- |
| Pin 9 | RA3 — Digital I/O / analog input / VREF+ |
| Pin 10 | RC0 — Digital I/O / SOSCO (32kHz crystal out) |
| Pin 11 | RC1 — Digital I/O / SOSCI (32kHz crystal in) |
| Pin 12 | RC2 — Digital I/O |
| Pin 13 | VDD — Positive supply voltage |
| Pin 14 | RB4 — Digital I/O |
| Pin 15 | RB5 — Digital I/O |
| Pin 16 | RB6 — Digital I/O |
| Pin 17 | RB7 — Digital I/O |
| Pin 18 | RB8 — Digital I/O |
| Pin 19 | MCLR — Master Clear (reset, active low) |
| Pin 20 | RA4 — Digital I/O / analog input / SOSC |
Typical Applications
PIC24F08KA101-I/SO is suitable for 6 applications: Battery-Powered IoT Sensor Node, Wearable Health Monitor, HVAC Thermostat Controller, Wireless Remote Control Unit, Industrial Sensor Transmitter, Smart Home Edge Controller.
Battery-Powered IoT Sensor Node
The PIC24F08KA101-I/SO's sub-20 nA deep sleep current and 250 µA/MIPS active power make it well suited to battery-powered IoT sensor nodes. Its 8KB Flash holds typical LoRaWAN or BLE-sensor application code while the 1KB SRAM supports small protocol stacks. The on-chip 10-bit ADC and analog comparators directly interface thermistors, photodiodes, and PIR sensors, eliminating external signal conditioning. The 32kHz SOSC drives the RTCC for time-stamping and periodic wake-up without CPU intervention, and DSWDT/DSBOR supervise the system during unattended battery operation.
Recommended
Wearable Health Monitor
The PIC24F08KA101-I/SO suits wearable health monitors where size, weight, and battery life are critical. The 20-SOIC footprint (7.5 mm body) is acceptable for most wrist-form-factor PCBs, and the wide 1.8V-3.6V supply accepts single Li-ion coin cells directly. The CTMU peripheral enables capacitive touch buttons without dedicated ICs, reducing BOM cost. Deep sleep current under 20 nA supports multi-week runtime on a 200 mAh coin cell with duty-cycled heart-rate sampling. The integrated 10-bit ADC captures bioelectric signals from PPG or ECG front-ends, and 17 I/O pins drive small OLED displays and haptic feedback.
Recommended
HVAC Thermostat Controller
The PIC24F08KA101-I/SO serves well as the main MCU in HVAC thermostat controllers, with the 32MHz 16 MIPS throughput handling PID loops, user-interface polling, and Modbus RTU communication simultaneously. The 17 I/O pins drive relays, triac control lines, NTC temperature sensors, and a 7-segment or TFT display without external I/O expanders. Its -40°C to +85°C industrial temperature rating ensures reliable operation in mechanical rooms and outdoor enclosures. The 10-bit ADC reads multiple NTC inputs for indoor/outdoor averaging and humidity sensing, while UART provides a debug port and field firmware update path.
Recommended
Wireless Remote Control Unit
For wireless remote control units, the PIC24F08KA101-I/SO provides a balance of low power consumption, modest 8KB Flash for protocol stacks, and 17 I/O pins for buttons/LEDs/encoders. The CTMU peripheral handles capacitive touch buttons without adding cost, while the hardware UART interfaces directly to sub-GHz transceivers such as the CC1101 for non-rolling-code remote control. Deep sleep current of under 20 nA yields multi-year battery life for remotes used intermittently. The 32kHz SOSC enables accurate timing for protocol frame generation without crystal cost.
Recommended
Industrial Sensor Transmitter
The PIC24F08KA101-I/SO fits industrial sensor transmitters (pressure, flow, level) operating on 4-20 mA loops or battery. Its 1.8V-3.6V supply accepts loop-derived power through a regulator, and the -40°C to +85°C industrial rating tolerates factory-floor temperature swings. The 16-bit timers drive PWM outputs for valve actuation, while UART supports HART or Modbus communication with host PLCs. Brown-out reset and the watchdog timer with on-chip LPRC ensure the device recovers automatically from supply glitches and software lock-ups. Hardware SPI connects to industrial-grade sensors like the MCP3551 sigma-delta ADC for precision measurement.
Recommended
Smart Home Edge Controller
The PIC24F08KA101-I/SO can act as an edge controller in smart home networks, where 8KB Flash stores ZigBee or BLE application code and 1KB SRAM buffers network events. The hardware I²C bus connects to environmental sensors (temperature, humidity, CO2) while UART interfaces to a host SoC for cloud connectivity. The CTMU enables capacitive touch controls on the front panel, and the deep sleep modes deliver standby power consumption under 20 nA when no user interaction is detected. Its -40°C to +85°C rating allows it to be embedded inside junction boxes without thermal concern.
Recommended
Recommended Products Summary
Engineering reference data for PIC24F08KA101-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24F16KA101-I/SO | PIC24F04KA101-I/SO | PIC24F08KA101T-I/SO | PIC24F04KA201-I/SO |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SOIC (SO) | 20-SOIC (SO) - same | 20-SOIC (SO) - same | 20-SOIC (SO) - same | 20-SOIC (SO) - same |
| Flash | 8 KB | 16 KB | 4 KB | 8 KB | 4 KB |
| SRAM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| EEPROM | 512 B | 512 B | 512 B | 512 B | 512 B |
| Max CPU Speed | 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 |
| I/O Pins | 17 | 17 | 17 | 17 | 17 |
| Deep Sleep Current | <20 nA typical | <20 nA typical | <20 nA typical | <20 nA typical | <20 nA typical |
Key Differentiators
- 8 KB Flash with full PIC24F peripheral set in 20-SOIC (vs PIC24F04KA201-I/SO)
- nanoWatt XLP™ deep sleep <20 nA (vs PIC24F16KA101-I/SO)
- CTMU peripheral for capacitive touch (vs PIC24F04KL101-I/SO)
Design Notes
Place a 100 nF ceramic decoupling capacitor as close as possible to the VDD pin, and add a bulk 1 µF to 10 µF ceramic within 10 mm for transient load support during ADC conversions. The PIC24F08KA101's internal voltage regulator requires the bulk capacitor for stability. For battery applications, route unused I/O pins as outputs low to minimize current leakage, and configure the analog comparators to disable when not in use via the CMxCON register.
Keep traces to PGC/PGD programming pins under 50 mm and avoid routing them near switching signals or analog inputs to prevent programming noise. The 32 kHz SOSC traces to pins 10-11 should be short and symmetric with a guard ring to digital lines to reduce jitter. Use a single-point ground at the MCU for analog and digital returns to avoid ground loops in ADC measurements.
Do not exceed VDD of 3.6V - the PIC24F08KA101 is NOT a 5V tolerant part and its I/O pins have an absolute maximum of VDD + 0.3V. When interfacing to 5V sensors, use a level shifter such as the TXS0108E or simple resistor divider. Ensure MCLR is pulled up to VDD through a 10 kΩ resistor and never left floating, otherwise spurious resets may occur in noisy environments.
Estimated: at 32 MHz and 3.3V, the PIC24F08KA101 draws approximately 8 mA active (250 µA/MIPS × 16 MIPS). Power dissipation is ~26 mW. The 20-SOIC package has θJA of approximately 80 °C/W, giving a junction temperature rise of only 2 °C above ambient in normal operation - well within industrial range. At deep sleep current of 20 nA, dissipation drops to ~66 nW, effectively self-cooling.
Compliance Information
RoHS compliant per Microchip product page. Industrial temperature grade (-40C to +85C) only; not AEC-Q100 qualified for automotive - refer to PIC24F08KA101-E/SO variants for extended temperature. Lead-free and halogen-free per Microchip material declaration.
