PIC24F04KL100T-I/ST - 4KB Flash 16-bit XLP MCU | Microchip TSSOP-14
MPN: PIC24F04KL100T-I/ST ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.1 | $2.10 |
| 10 | $1.82 | $18.20 |
| 100 | $1.55 | $155.00 |
| 500 | $1.3 | $650.00 |
| 1,000 | $1.05 | $1,050.00 |
PIC24F04KL100T-I/ST Overview
A 16-bit MCU is a microcontroller with a 16-bit wide datapath, occupying the middle tier of the MCU hierarchy (8-bit -> 16-bit -> 32-bit) within the broader semiconductor taxonomy. The PIC24F family specifically uses Microchip's modified Harvard architecture with a 16-bit instruction word optimized for C code density, fitting between the PIC18 (8-bit) and PIC32 (32-bit MIPS-based) families. The KL sub-series emphasizes ultra-low-power operation via XLP technology, making it a strong choice for battery-powered and energy-harvesting products where 32-bit Cortex-M parts would be over-spec and 8-bit PIC18 parts lack DSP performance.
Key features include 4 KB self-programmable Flash with 128 KB erase endurance, 512 bytes SRAM, 12-bit ADC, multiple timers, and a peripheral set oriented toward sensor interfaces and low-power wireless control loops. The device integrates an 8 MHz internal oscillator with PLL support, eliminating external crystals in many cost-sensitive designs. AEC-Q100 qualification makes the part usable in automotive applications, while TSSOP-14 packaging simplifies hand-prototyping and reflow assembly.
Architecturally, the PIC24F04KL100 uses a single-cycle 16-bit ALU with hardware multiply, allowing 32-bit multiplications in a single instruction. The XLP power management integrates deep sleep, sleep, idle, and run modes, with peripheral clock gating and ultra-low-power wake sources such as RTCC, watchdog timer, and interrupt-on-change. The MSSP module supports both I2C (master/slave) and SPI, while the CCP/ECCP modules provide PWM, capture, and compare functions.
Typical applications include battery-powered IoT sensor nodes, wearable health monitors, low-power wireless remote controls, HVAC thermostat front-ends, automotive body controllers, and consumer remote keyless entry systems. The XLP technology is especially valuable in applications with multi-year battery life targets where quiescent current dominates total energy consumption.
When designing with this part, evaluate whether 4 KB Flash is sufficient for the full firmware image including boot loader and stack overhead; choose a larger-memory sibling (PIC24F08KL/KA) for richer feature sets. For designs requiring USB or CAN, the KL1xx family does not include these peripherals and a step-up to PIC24FJ or PIC18F K-series is recommended.
Drop-in alternatives for PIC24F04KL100T-I/ST — 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 PIC24F04KL100T-I/ST (same form factor and footprint) — differing in Package, ADC, Timers, Core Architecture, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24F04KL100-I/ST
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24F04KL100T-E/ST
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24F04KL100-E/ST
✅ Drop-In✓ In Stock
$0.72 / Unit
View Datasheet →PIC24F04KA200-I/ST
✅ Drop-In✓ In Stock
$1.42 / Unit
View Datasheet →PIC24F04KA200T-I/ST
✅ Drop-In✓ In Stock
$1.99 / Unit
View Datasheet →PIC24F04KA201-I/ST
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24F04KL100T-I/ST Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24F (16-bit modified Harvard) |
| Family | PIC24F KL1xx / PIC XLP 24F |
| Program Memory (Flash) | 4 KB (1.375K x 24 instructions) |
| Data Memory (SRAM) | 512 B |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| Operating Temperature Range | -40 C to +85 C (Industrial -I grade) |
| Package | 14-pin TSSOP (ST) |
| Mounting Type | Surface Mount |
| Run Current | Under 350 uA/MHz at 1.8 V |
| Sleep Current | Under 20 nA typical (XLP) |
| A/D Converter | 12-bit ADC |
| Communication | MSSP (I2C/SPI), UART |
| PWM / Capture | CCP / ECCP modules |
| Timers | Multiple 16-bit timers with RTCC |
| Internal Oscillator | 8 MHz with PLL |
| Programming | ICSP (In-Circuit Serial Programming) |
| AEC-Q100 Qualification | Yes (automotive grade) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC24F04KL100T-I/ST Pin Configuration
| Pin 1 | RA0 — Port MRA bit 0 / analog input / ICSPDAT |
| Pin 2 | RA1 — Port MRA bit 1 / analog input / ICSPCLK |
| Pin 3 | RA2 — Port MRA bit 2 / analog input |
| Pin 4 | MCLR — Master Clear (reset) input / programming voltage |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RA3 — Port MRA bit 3 / analog input |
| Pin 7 | RA4 — Port MRA bit 4 / analog input |
| Pin 8 | RA5 — Port MRA bit 5 / analog input / VREF+ |
| Pin 9 | RA6 — Port MRA bit 6 / analog input / VREF- |
| Pin 10 | RA7 — Port MRA bit 7 / analog input / SOSCO |
| Pin 11 | VDD — Positive supply voltage (1.8 V to 3.6 V) |
| Pin 12 | RB0 — Port MRB bit 0 / analog input / SCL1 |
| Pin 13 | RB1 — Port MRB bit 1 / analog input / SDA1 |
| Pin 14 | OSCI — Oscillator input / SOSCI |
Typical Applications
PIC24F04KL100T-I/ST is suitable for 7 applications: Battery-Powered IoT Sensor Nodes, Wearable Health Monitors, Low-Power Wireless Remote Controls, Automotive Body and Lighting Controllers, HVAC Thermostat Front-Ends, Consumer Remote Keyless Entry (RKE), Industrial Sensor Transmitters (4-20 mA Loop Powered).
Battery-Powered IoT Sensor Nodes
The PIC24F04KL100T-I/ST's nanoWatt XLP technology delivers under 350 uA/MHz active current at 1.8 V and sleep currents below 20 nA typical, enabling multi-year coin-cell operation in wireless sensor nodes. Its 16 MIPS performance handles typical sensor fusion, periodic wake-and-transmit cycles, and small protocol stacks (I2C/SPI sensor reads) without external components. The MSSP module interfaces directly with MEMS sensors and sub-GHz transceivers, while the 12-bit ADC reads battery voltage and analog sensors with one LSB accuracy. The 14-pin TSSOP package fits sensor modules smaller than 15 mm x 15 mm.
Recommended
Wearable Health Monitors
Wearables demand sub-100 uA average current for multi-day battery life, which the PIC24F04KL100T-I/ST's XLP technology directly addresses via deep-sleep modes below 20 nA and on-demand active periods. The 16-bit datapath performs heart-rate, SpO2, and step-count algorithms in real time without offloading to a wireless SoC. The TSSOP-14 footprint is small enough to fit inside wristbands, rings, and patch form factors, while the AEC-Q100 rating supports medical-grade wearables requiring automotive-grade reliability. Low-power peripherals like RTCC wake the MCU only on schedule or interrupt-on-change events.
Recommended
Low-Power Wireless Remote Controls
Battery-powered RF remotes require microamp-level idle currents and instantaneous wake on button event, both of which the PIC24F04KL100T-I/ST provides via XLP deep-sleep below 20 nA and interrupt-on-change wake. Its 16 MIPS performance is sufficient to encrypt, encode, and transmit IR/RF packets in microseconds, leaving the MCU in deep-sleep the rest of the time. The 14-pin TSSOP package accommodates up to 12 user I/O pins for keypad matrix scanning, LED drive, and IRQ lines to companion sub-GHz or BLE transceivers via MSSP SPI.
Recommended
Automotive Body and Lighting Controllers
The PIC24F04KL100T-I/ST's AEC-Q100 qualification makes it directly usable in automotive body electronics, including interior lighting dimmers, ambient LED drivers, mirror controllers, and door-handle sensors. The 1.8 V to 3.6 V supply range is compatible with 3.3 V automotive rails, while the 12-bit ADC reads potentiometers, photo-sensors, and current shunts for closed-loop control. The CCP/ECCP modules drive PWM-controlled LEDs and small brushed motors, and the TSSOP-14 footprint fits behind switch panels and inside connector housings where board area is constrained.
Recommended
HVAC Thermostat Front-Ends
Thermostats and HVAC controllers combine battery-backed RTC, temperature/humidity sensors, and user-interface peripherals, all of which the PIC24F04KL100T-I/ST handles within its 14-pin footprint. XLP technology extends battery backup to 5+ years on two-AA cells while the MSSP connects to digital temperature/humidity sensors over I2C. The 12-bit ADC reads NTC thermistors and potentiometers for setpoint adjustments, while CCP generates PWM outputs for valve and damper actuators. AEC-Q100 qualification also allows deployment in commercial HVAC control panels requiring automotive-grade reliability.
Recommended
Consumer Remote Keyless Entry (RKE)
RKE key fobs depend on single-button presses consuming 20-50 mA peak RF transmit currents while idle currents below 10 uA are mandatory for coin-cell life expectancy. The PIC24F04KL100T-I/ST's XLP deep-sleep below 20 nA combined with sub-microsecond wake-up on GPIO interrupt makes it an ideal RKE controller. The 16 MIPS core performs rolling-code encryption (KeeLoq or proprietary) in real time before RF transmission, while the TSSOP-14 footprint fits inside standard key-fob enclosures with the MSSP driving SPI NOR Flash for code storage.
Recommended
Industrial Sensor Transmitters (4-20 mA Loop Powered)
Loop-powered 4-20 mA industrial transmitters operate from as little as 3.5 mA loop current, demanding a microcontroller with sub-milliamp active consumption. The PIC24F04KL100T-I/ST's under 350 uA/MHz active current allows it to power up, sense, modulate, and return to deep-sleep while staying within the loop current budget. Its 12-bit ADC digitizes sensor signals with 0.024% FS accuracy, and the MSSP drives external digital calibration or HART modem chips. The AEC-Q100 rating supports industrial environments with extended temperature requirements.
Recommended
Recommended Products Summary
Engineering reference data for PIC24F04KL100T-I/ST — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24F04KL100-I/ST | PIC24F04KL100T-E/ST | PIC24F04KL100-E/ST | PIC24F04KA200-I/ST | PIC24F04KA200T-I/ST | PIC24F04KA201-I/ST |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-pin TSSOP (ST) | 14-pin TSSOP (ST) - same | 14-pin TSSOP (ST) - same | 14-pin TSSOP (ST) - same | 14-pin TSSOP (ST) - same | 14-pin TSSOP (ST) - same | 14-pin TSSOP (ST) - same |
| Flash Memory | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB |
| RAM | 512 B | 512 B | 512 B | 512 B | 512 B | 512 B | 512 B |
| Maximum 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) | 32 MHz (16 MIPS) |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) | -40 C to +125 C (Extended) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
| XLP Sleep Current | Under 20 nA typical | Under 20 nA typical | Under 20 nA typical | Under 20 nA typical | Higher than KL100 XLP | Higher than KL100 XLP | Higher than KL100 XLP |
| EEPROM | None | None | None | None | None | None | 256 B |
| Packaging | Tape & Reel | Tube | Tape & Reel | Tube | Tube | Tape & Reel | Tube |
Key Differentiators
- Industry-leading 20 nA deep-sleep current via nanoWatt XLP (vs PIC24F04KA200-I/ST)
- AEC-Q100 qualified for automotive deployment (vs PIC24F04KA200-I/ST (industrial only))
- Minimal TSSOP-14 footprint with no external crystal needed (vs PIC24F04KA200-I/ST)
Design Notes
The PIC24F04KL100T-I/ST's nanoWatt XLP technology supports deep-sleep currents under 20 nA typical, but the actual quiescent current depends on disabling unused peripherals before Sleep. Per the datasheet, leaving MSSP, ADC, or comparators enabled in Sleep can leak 10-50 uA each. Always disable unused modules via PMDx, CMxCON, and ADxCON register bits before executing the PWRSAV #0 instruction, and verify the leakage budget with a uCurrent or equivalent instrument.
The 14-pin TSSOP package has 0.65 mm pin pitch, which requires careful PCB layout: route all signals on inner layers only under the package, avoid via-in-pad unless filled and capped, and provide a continuous ground pour beneath the IC for thermal dissipation. Place the VDD decoupling capacitor (100 nF ceramic X7R) within 3 mm of pin 11 with a short trace to pin 5 (VSS) to minimize switching noise injection. For AEC-Q100 designs, place a 10 uF bulk capacitor adjacent to the IC for load transients.
Do not exceed the 3.6 V absolute maximum VDD rating, even during programming - the ICSP high-voltage entry uses the MCLR pin which is referenced to VDD. The internal 8 MHz oscillator with PLL requires correct OSCCON configuration after reset; failing to wait for the PLL lock (via the LOCK bit in OSCCON) before switching to 32 MHz operation causes code execution at incorrect timing. Additionally, configuration bits (CONFIG1/2/3/4) must be set before the first instruction or the MCU may execute from a protected region.
The MSSP I2C bus on the PIC24F04KL100T-I/ST requires 4.7 kohm to 10 kohm pull-ups on SCL/SDA depending on bus capacitance and speed. For Standard-mode 100 kHz I2C, 10 kohm pull-ups with 100 pF total bus capacitance is typical; for Fast-mode 400 kHz, drop to 4.7 kohm. The MSSP SPI can operate up to 10 MHz in master mode but be aware that long PCB traces (above 50 mm) require source termination to suppress ringing on the SCK line.
Compliance Information
RoHS and REACH compliant per Microchip product page. AEC-Q100 qualified for automotive applications. Lead-free matte-tin plating per JEDEC J-STD-020 reflow profile. Conflict-minerals DRC Conflict Free per Abacus Technologies catalog entry.
