PIC24F04KL101-I/SS - 16-bit 32MHz MCU 4KB Flash | Microchip
MPN: PIC24F04KL101-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.46 | $1.46 |
| 10 | $1.32 | $13.20 |
| 100 | $1.18 | $118.00 |
| 500 | $1.05 | $525.00 |
| 1,000 | $0.93 | $930.00 |
| 3,000 | $0.85 | $2,550.00 |
PIC24F04KL101-I/SS Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O into one package. The PIC24F family uses a 16-bit modified Harvard architecture with a 24-bit instruction set that delivers deterministic throughput for real-time embedded control. Within the broader taxonomy, the PIC24F04KL101 sits in the 16-bit MCU tier, between 8-bit PIC18F and 32-bit PIC32MM/PIC32MX devices, and is designed for cost-sensitive 16-MIPS designs that benefit from nanoWatt XLP ultra-low-power technology.
Key features include nanoWatt XLP sleep currents in the nanoampere range, a 10-bit ADC with multiple channels, one I2C/SPI MSSP peripheral, one Enhanced CCP, five general-purpose timers, and up to 17 digital I/O pins sharing pins with analog and peripheral functions. The device supports multiple low-power modes (Sleep, Idle, Doze) that allow the CPU, Flash, SRAM, and peripherals to be clocked independently for energy-sensitive battery and energy-harvested applications.
The architecture implements a 16-bit data path with 24-bit instructions, single-cycle hardware multiply, and a deterministic interrupt controller. PIC18-compatible peripherals such as MSSP (I2C/SPI) and CCP simplify migration from older 8-bit designs while still doubling throughput at the same clock. On-chip debug is supported through the ICSP/ICD interface, allowing in-circuit programming and debugging with the MPLAB Snap, PICkit, or ICD tool families.
Typical applications include low-cost consumer appliances, battery-powered sensor nodes, wearable accessories, remote controls, smart meters, low-end home-automation peripherals, IoT end-nodes, and any general-purpose embedded control where nanoWatt XLP battery life and 16-bit performance are required at PIC18 cost points. Design considerations for this part include ensuring the ICSP pins are not bonded out to application circuitry that would interfere with debugger access, and selecting the proper XLP mode (Sleep/Idle/Doze) for the application's duty cycle.
Drop-in alternatives for PIC24F04KL101-I/SS — 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 PIC24F04KL101-I/SS (same form factor and footprint) — differing in Package, ADC, Timers, Core Architecture, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24F04KL101-I/SO
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC24F04KA201-I/SS
✅ Drop-In✓ In Stock
$1.67 / Unit
View Datasheet →PIC24F04KA201-I/SO
✅ Drop-In✓ In Stock
$1.78 / Unit
View Datasheet →PIC24F04KA200-I/ST
✅ Drop-In✓ In Stock
$1.42 / Unit
View Datasheet →PIC24F04KL100-I/P
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC24F04KL101-E/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24F04KL101-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24F 16-bit RISC modified Harvard |
| Program Memory (Flash) | 4 KB (1.375K x 24) |
| Data Memory (SRAM) | 512 B |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Operating Voltage (VDD) | 1.8 V to 3.6 V |
| I/O Pins | 17 |
| ADC | 10-bit |
| MSSP (I2C/SPI) | 1 |
| Enhanced CCP | 1 |
| Timers (8/16-bit) | 5 |
| Low-Power Technology | nanoWatt XLP |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 20-SSOP (0.209 in / 5.30 mm body) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC24F04KL101-I/SS Pin Configuration
| Pin 1 | RA0 — Digital I/O / analog input AN0 / CVREF- |
| Pin 2 | RA1 — Digital I/O / analog input AN1 / CVREF+ |
| Pin 3 | RA2 — Digital I/O / analog input AN2 / VREF- |
| Pin 4 | RA3 — Digital I/O / analog input AN3 / VREF+ |
| Pin 5 | RA4 — Digital I/O / analog input AN4 / SOSCI |
| Pin 6 | RA5 — Digital I/O / analog input AN5 / SOSCO |
| Pin 7 | RA6 — Digital I/O / analog input AN6 / OSCO |
| Pin 8 | RA7 — Digital I/O / analog input AN7 / OSCI |
| Pin 9 | VSS — Ground reference |
| Pin 10 | VDD — Positive supply (1.8V to 3.6V) |
| Pin 11 | RB0 — Digital I/O / PGED1 programming data |
| Pin 12 | RB1 — Digital I/O / PGEC1 programming clock |
| Pin 13 | RB2 — Digital I/O / analog input AN8 |
| Pin 14 | RB3 — Digital I/O / analog input AN9 |
| Pin 15 | RB4 — Digital I/O / analog input AN11 |
| Pin 16 | RB5 — Digital I/O / analog input AN13 |
| Pin 17 | RB6 — Digital I/O / ICSPCLK / OSC2 |
| Pin 18 | RB7 — Digital I/O / ICSPDAT / OSC1 |
| Pin 19 | MCLR — Master clear reset (active low) / VPP programming voltage |
| Pin 20 | RA5 — Digital I/O - second function on SSOP variant per datasheet |
Typical Applications
PIC24F04KL101-I/SS is suitable for 6 applications: Battery-Powered Sensor Nodes, Wearable Health and Fitness Devices, Home Automation Peripherals, Remote Controls and HID Devices, Industrial Sensor Hubs, Low-Cost Consumer Appliances.
Battery-Powered Sensor Nodes
The PIC24F04KL101-I/SS nanoWatt XLP technology makes it ideal for coin-cell or 2xAA powered wireless sensor nodes that spend most of their life in deep Sleep. With sleep currents in the nanoampere range and a 16 MIPS 16-bit core for quick sensor read-and-transmit bursts, it balances long battery life with deterministic control. A typical implementation wakes on a timer or external interrupt, samples a sensor over the 10-bit ADC or MSSP I2C, transmits, and returns to Sleep. Compared to PIC18F, the 16-bit path doubles throughput at the same clock, which reduces active time and extends battery life. Compatible companion parts include the MCP9808 temperature sensor (I2C), MCP1700 LDO regulator, and a sub-GHz or BLE module for uplink.
Recommended
Wearable Health and Fitness Devices
The PIC24F04KL101-I/SS suits wearables such as fitness bands, heart-rate straps, and smart watches where 16-bit performance and nanoWatt XLP low-power operation are mandatory. Its 17 I/O pins can drive LEDs, buttons, an SPI display, and a PPG/heart-rate sensor over MSSP. The 32 MHz core can run signal-processing routines for heart-rate or step counting while keeping active time short, and Sleep mode preserves SRAM for instantaneous wake. The 20-SSOP package keeps the BOM footprint small enough for wristbands. Companion parts include MAX30102 PPG sensor, SSD1306 OLED display, and CR2032 coin-cell holders with low-leakage LDO supply.
Recommended
Home Automation Peripherals
For cost-sensitive home-automation peripherals like smart plugs, dimmers, remote controls, and HVAC thermostats, the PIC24F04KL101-I/SS provides 16-bit performance at 8-bit prices. Its MSSP peripheral implements both I2C and SPI for sensor hubs, EEPROM, or wireless modules (BLE/Zigbee/Sub-GHz). The 10-bit ADC handles temperature, humidity, and current sensing, while the Enhanced CCP drives TRIAC phase-control or PWM dimming. nanoWatt XLP Sleep keeps standby power below EPA Energy Star limits. Companion parts include the MCP9808 temperature sensor, AT24CM02 I2C EEPROM, and a sub-GHz transceiver such as the Microchip MRF89XA.
Recommended
Remote Controls and HID Devices
The PIC24F04KL101-I/SS excels in infrared remote controls, wireless presenters, and gaming peripherals where Sleep current dominates the energy budget. The 17 I/O pins drive IR LEDs, button matrices, and status LEDs while the MSSP talks to a wireless transceiver or a small OLED display. The 16 MIPS core performs debouncing, IR protocol encoding (RC5/RC6/NEC), and AES-light encryption quickly before returning to Sleep, extending coin-cell life by 2-3x compared to PIC18F equivalents. The 20-SSOP fits inside slim remote enclosures. Companion parts include TSAL6100 IR LED, GP1UXC infrared receiver, and MCP1700 LDO for stable battery supply.
Recommended
Industrial Sensor Hubs
The PIC24F04KL101-I/SS industrial temperature range (-40C to +85C) and 16-bit deterministic core suit industrial sensor hubs that aggregate multiple analog and digital signals into a Modbus or CAN node. The 10-bit ADC reads 4-20 mA loop signals, while MSSP I2C connects to digital sensors, and Enhanced CCP drives PWM outputs for actuator control. Its 4 KB Flash accommodates Modbus RTU stacks with room for application logic. The 20-SSOP package eases dense PCB layout in DIN-rail enclosures. Companion parts include MAX31865 RTD interface, MCP2515 CAN controller, and isolated RS-485 transceivers such as the ADM2485.
Recommended
Low-Cost Consumer Appliances
The PIC24F04KL101-I/SS targets cost-sensitive consumer appliances such as coffee makers, blenders, air purifiers, and small kitchen devices where 8-bit pricing is mandatory but 16-bit throughput is preferred. The 17 I/O drive buttons, LEDs, relays, and BLDC or universal-motor control via Enhanced CCP. The 32 MHz core runs sensor-fusion and timing loops for safe appliance operation. nanoWatt XLP supports standby modes mandated by Energy Star and EU eco-design directives. Companion parts include the MCP1700 LDO, zero-cross SSR (MOC3041), and triac drivers (BTA16) for AC line switching.
Recommended
Recommended Products Summary
Engineering reference data for PIC24F04KL101-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24F04KL101-I/SO | PIC24F04KA201-I/SS | PIC24F04KL100-I/P | PIC24F04KL101-E/SS |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SSOP | 20-SOIC | 20-SSOP | 20-PDIP | 20-SSOP |
| Program Memory | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB |
| Maximum Clock | 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 |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C (Extended) |
| Low-Power Technology | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP |
Key Differentiators
- nanoWatt XLP deep-Sleep current in nanoampere range (vs PIC24F04KA201-I/SS)
- PIC18-compatible MSSP and CCP peripherals for easy migration (vs PIC24F04KL100-I/P)
- Industrial -40C to +85C temperature grade at low cost (vs PIC24F04KL101-E/SS)
Design Notes
The PIC24F04KL101-I/SS operates from 1.8 V to 3.6 V on VDD (pin 10) with VSS on pin 9. For full 32 MHz / 16 MIPS throughput, datasheet DS30009826G specifies VDD >= 3.0 V. Below 3.0 V the CPU may be operated at reduced FOSC (FCY down to ~8 MIPS at 1.8 V). Use an MCP1700 or MCP1710 low-Iq LDO and place 100 nF decoupling within 5 mm of VDD plus a 10 uF bulk cap on the supply rail. For battery-powered designs, route MCLR (pin 19) through a 10 kohm pull-up to avoid spurious resets.
Do not bond out ICSP pins RB6 (pin 17) and RB7 (pin 18) to application circuitry that pulls them strongly at runtime. These pins are shared with OSC1/OSC2 and are reused by the MPLAB debugger (PICkit, ICD, Snap) during development. Leave them accessible via a 2x3 ICSP header or test pads. The MCLR pin (19) must NOT be left floating; either tie it to VDD through a 10 kohm resistor or use the internal MCLR configuration. For the SSOP variant, note that pin 20 may be a no-connect on some KL1 die revisions; consult the package marking to determine pin 20 function.
Estimated: at 32 MHz / 3.3 V with full peripheral activity, the PIC24F04KL101-I/SS typically draws 8-12 mA active and under 100 nA in Sleep. The 20-SSOP package has theta_JA of approximately 100 C/W (datasheet DS30009826G thermal table) - more than sufficient for any normal MCU operating current. At maximum Sleep current of 100 nA and ambient 25 C, junction temperature rise is negligible (<0.001 C). Heat is not a concern for this device in any typical application.
Compliance Information
RoHS-compliant per Microchip product family declarations. Not AEC-Q100 qualified - for AEC-Q100 automotive, look at /VAO suffix variants. Lead-free matte-tin finish. REACH compliance per Microchip product page.
