PIC18LF24K50-E/SP - 8-Bit 48MHz 16KB Flash USB MCU | Microchip
Teilenummer: PIC18LF24K50-E/SP ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $4.11 | $4,11 |
| 10 | $3.72 | $37,20 |
| 100 | $3.18 | $318,00 |
| 500 | $2.85 | $1.425,00 |
| 1.000 | $2.59 | $2.590,00 |
PIC18LF24K50-E/SP Übersicht
What is an 8-bit microcontroller? An 8-bit microcontroller (MCU) is a single-chip computer whose arithmetic logic unit processes data 8 bits at a time. PIC18F/LF K50 devices sit in the higher-performance tier of Microchip's PIC18 family, adding nanoWatt XLP ultra-low-power technology, an integrated USB 2.0 full-speed transceiver (no external crystal or resistor needed for USB operation), and a C compiler-friendly RISC architecture. Within the broader taxonomy, this device belongs to: microcontroller -> 8-bit MCU -> PIC18 family -> PIC18 K50 sub-family -> power management and connectivity oriented MCUs.
Key features include a Harvard RISC architecture with 49 instructions (83 with extended instruction set), 16-level hardware stack, internal 48 MHz oscillator, 25 I/O pins, 14 ADC channels (10-bit), 2 analog comparators, 2 CCP/ECCP modules, two USART modules, one SPI/I2C MSSP, and a Charge Time Measurement Unit (CTMU) for touch sensing and capacitive measurement. The integrated USB module supports USB 2.0 full-speed (12 Mbps) device and Host/OTG modes with on-chip transceiver and internal pull-up resistors.
Technically, the device uses a 2-stage instruction pipeline, 32 kHz to 48 MHz PLL clock chain from an internal 16 MHz HFINTOSC, and nanoWatt XLP sleep currents down to 20 nA typical. The on-chip CTMU enables capacitive touch and mTouch sensing without external analog ICs, while the mTouch software library accelerates firmware development. Programming is supported through ICSP (In-Circuit Serial Programming) and JTAG-compatible debug via ICD 3 / PICkit 3 / MPLAB SNAP, with no external crystal required for USB operation.
Typical applications include USB HID peripherals (keyboards, mice, game controllers), USB-to-UART bridges, USB sensor data loggers, low-power battery-powered IoT nodes with USB charging, capacitive touch human-machine interfaces (HMIs), industrial data acquisition with USB connectivity, and educational/development boards where through-hole SPDIP simplifies hand-soldering and breadboard prototyping.
When designing with this part, ensure VDD decoupling uses 100 nF plus 4.7 uF bulk capacitors placed within 5 mm of the supply pins. The D+ and D+ lines must be routed as a 90-ohm differential pair with matching length and continuous ground reference, per USB 2.0 full-speed layout guidelines. Leave pin 12 (RA4/RC2) NC-free only if unused - it is multiplexed with the USB module.
This page synthesizes distributor pricing, drop-in same-package alternatives (PIC18F24K50-E/SP, PIC18LF25K50-E/SP), and practical design notes not aggregated in the manufacturer datasheet.
Drop-in-Alternativen für PIC18LF24K50-E/SP – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit PIC18LF24K50-E/SP (gleiche Bauform und Footprint) – abweichend in Operating Temperature, Package, Timers, ADC, Mounting Type.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PIC18F24K50-E/SP
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
PIC18LF25K50-E/SP
✅ Drop-In✓ Auf Lager
$1.95 / Stück
Datenblatt ansehen →PIC18F25K50-E/SP
✅ Drop-In✓ Auf Lager
$3.1 / Stück
Datenblatt ansehen →PIC18LF24K42-I/SP
✅ Drop-In✓ Auf Lager
$1.55 / Stück
Datenblatt ansehen →PIC18LF24K40-I/SP
✅ Drop-In✓ Auf Lager
$1.55 / Stück
Datenblatt ansehen →PIC18LF23K22-E/SP
✅ Drop-In✓ Auf Lager
$1.94 / Stück
Datenblatt ansehen →PIC18LF24K50-E/SP Grenzwerte & elektrische Eigenschaften
| Core Architecture | 8-bit PIC18 RISC |
| Family | PIC18 K50 (PIC18LF/K24K50 / 25K50 / 45K50) |
| CPU Frequency (Max) | 48 MHz |
| Program Memory (Flash) | 16 KB (8K x 16 words) |
| Data Memory (SRAM) | 2048 bytes |
| EEPROM | 256 bytes |
| I/O Pins | 25 |
| ADC | 10-bit, 14 channels |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| USB Module | USB 2.0 Full-Speed (12 Mbps), Device/Host/OTG, on-chip transceiver |
| Communication Interfaces | 2x USART (LIN/IrDA), 1x MSSP (SPI/I2C), USB, 2x CCP/ECCP |
| Timers | 4 (Timer0/1/2/3) + WDT |
| Analog Comparators | 2 |
| Gehäuse | 28-SPDIP (SP), through-hole, 7.62 mm row spacing |
| Betriebstemperatur | -40 C to +125 C (E = automotive extended) |
| Montageart | Through-Hole (DIP) |
| RoHS-Status | Compliant |
| Programming/Debug | ICSP + 4-wire ICD via PICkit 3/4, ICD 3, MPLAB SNAP |
| CTMU | Yes (Charge Time Measurement Unit for touch/capacitive sensing) |
| XLP nanoWatt | Yes (sleep current down to ~20 nA typical) |
PIC18LF24K50-E/SP Pin-Konfiguration
| Pin 1 | MCLR/RE3 — Master Clear (Reset) input or digital input RE3; active-low reset, internal pull-up |
| Pin 2 | RA0/AN0 — Digital I/O RA0 or analog input AN0 (ADC channel 0) |
| Pin 3 | RA1/AN1 — Digital I/O RA1 or analog input AN1 (ADC channel 1) |
| Pin 4 | RA2/AN2 — Digital I/O RA2 or analog input AN2 (ADC channel 2) |
| Pin 5 | RA3/AN3/VREF+ — Digital I/O RA3, analog AN3, or ADC positive voltage reference |
| Pin 6 | RA4/RC2 — Digital I/O RA4 or RC2 alternate function; open-drain output |
| Pin 7 | RA5/AN4/RC2 — Digital I/O RA5, analog AN4 |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/RA7/CLKIN — External clock input or digital I/O RA7 |
| Pin 10 | OSC2/RA6/CLKOUT — External crystal output or digital I/O RA6 |
| Pin 11 | RC0/SOSCO — Digital I/O RC0 or secondary oscillator output |
| Pin 12 | RC1/SOSCI — Digital I/O RC1 or secondary oscillator input |
| Pin 13 | RC3 — Digital I/O RC3 (PWM/CCP capable) |
| Pin 14 | RC4 — Digital I/O RC4 |
| Pin 15 | RC5 — Digital I/O RC5 |
| Pin 16 | RC6/TX/CK — Digital I/O RC6, USART TX, or USART clock |
| Pin 17 | RC7/RX/DT — Digital I/O RC7, USART RX, or USART data |
| Pin 18 | RB0/AN12/INT0 — Digital I/O RB0, analog AN12, or external interrupt 0 |
| Pin 19 | RB1/AN10 — Digital I/O RB1 or analog AN10 |
| Pin 20 | RB2/AN8 — Digital I/O RB2 or analog AN8 |
| Pin 21 | RB3/AN9 — Digital I/O RB3 or analog AN9 |
| Pin 22 | RB4/AN11 — Digital I/O RB4 or analog AN11 |
| Pin 23 | RB5/AN13 — Digital I/O RB5 or analog AN13 |
| Pin 24 | RB6/KBI2 — Digital I/O RB6 or interrupt-on-change; ICDPG clock |
| Pin 25 | RB7/KBI3 — Digital I/O RB7 or interrupt-on-change; ICDPG data |
| Pin 26 | VDD — Positive supply voltage (1.8 V to 3.6 V) |
| Pin 27 | VUSB — USB internal 3.3V regulator output (connect 220 nF bypass to VSS) |
| Pin 28 | D-/RC4 — USB D- data line (alternate function RC4) |
Typische Anwendungen
PIC18LF24K50-E/SP ist geeignet für 7 Anwendungs: USB HID Peripherals (Keyboard/Mouse/Game Controller), USB-to-UART Serial Bridge / Debug Cable, Battery-Powered USB Sensor Data Logger, Capacitive Touch Human-Machine Interface (HMI), Industrial USB Data Acquisition Module, Educational Microcontroller Development Board, USB-Connected Home Automation Sensor Node.
USB HID Peripherals (Keyboard/Mouse/Game Controller)
The PIC18LF24K50-E/SP's integrated USB 2.0 full-speed (12 Mbps) transceiver, on-chip 3.3 V USB regulator, and 48 MHz CPU make it a one-chip solution for USB HID peripherals. The LF variant's 1.8 V to 3.6 V VDD range lets it run directly from two AA cells or a single Li-ion battery. The 14-channel 10-bit ADC supports joystick axes, while 25 I/O pins drive mechanical switch matrices, RGB LEDs, and capacitive touch sliders via the on-chip CTMU. Existing Microchip USB HID firmware stacks run unmodified, allowing direct code reuse from PIC18F24K50 designs. Compared to designs using an external FTDI USB-to-UART IC, the PIC18LF24K50-E/SP removes a discrete chip, a crystal, and several passives, shrinking BOM cost by approximately 15-20%.
Empfohlen
USB-to-UART Serial Bridge / Debug Cable
For USB-to-UART bridge cables and embedded debug consoles, the PIC18LF24K50-E/SP's integrated USB transceiver and dual USART modules provide a complete CDC-ACM bridge in a single 28-SPDIP chip. The 48 MHz CPU sustains 1 Mbaud UART throughput without buffering pressure, while the 16 KB Flash holds a USB CDC stack plus command parser. The LF variant supports 3.3 V UART signals directly without level shifting, and the nanoWatt XLP feature enables bus-powered designs drawing under 100 mA in suspend. Engineers can develop firmware using the Microchip MLA (Microchip Libraries for Applications) USB CDC stack, which runs unmodified on the PIC18F24K50 sibling.
Empfohlen
Battery-Powered USB Sensor Data Logger
The PIC18LF24K50-E/SP is well matched to battery-powered USB sensor data loggers that sleep most of the time and burst data to a host PC when plugged in. nanoWatt XLP sleep currents down to ~20 nA typical extend battery life to years on a single CR2032 cell, while the 48 MHz wake-up time of under 5 us lets the MCU return to sleep quickly after USB enumeration. The 14-channel 10-bit ADC plus two analog comparators provide sensor conditioning for temperature, humidity, light, and battery voltage. The 2 KB SRAM supports circular buffering at low sample rates, while 16 KB Flash stores USB stack and logging firmware. Compared to designs using a discrete ADC plus USB chip, this MCU eliminates two ICs from the BOM.
Empfohlen
Capacitive Touch Human-Machine Interface (HMI)
The on-chip CTMU (Charge Time Measurement Unit) and 14-channel 10-bit ADC make the PIC18LF24K50-E/SP a compact solution for capacitive touch keypads and sliders. The Microchip mTouch software library provides ready-to-use touch sensing firmware that scans up to 14 channels with hardware noise-immunity algorithms. The integrated USB module streams touch events to a host PC or embedded system at 12 Mbps, eliminating discrete touch controllers. The LF variant's 1.8 V to 3.6 V VDD range suits battery-powered HMI panels, while the -40 C to +125 C operating range supports automotive interior panels. Compared to discrete touch ICs plus a microcontroller, the PIC18LF24K50-E/SP saves roughly 30% PCB area.
Empfohlen
Industrial USB Data Acquisition Module
For industrial data acquisition modules that stream 4-20 mA loop or 0-10 V sensor signals over USB, the PIC18LF24K50-E/SP provides a rugged single-chip solution. The 14-channel 10-bit ADC handles multi-channel industrial sensors directly, the two analog comparators provide window comparators for alarm thresholds, and the integrated USB 2.0 full-speed transceiver streams data at 12 Mbps to a host PC for SCADA logging. The -40 C to +125 C operating temperature supports factory-floor enclosures, and the 28-SPDIP through-hole package simplifies hand-soldering for prototypes. Compared to PLC backplane modules, this MCU-based design is roughly 1/3 the cost and 1/5 the size.
Empfohlen
Educational Microcontroller Development Board
The 28-SPDIP through-hole package of the PIC18LF24K50-E/SP makes it the perfect target for educational development boards and breadboard-friendly prototypes. Students can hand-solder the part, drop it into a breadboard, and immediately program it with PICkit 4 or MPLAB SNAP. The integrated USB module means no external USB-to-serial adapter is required for code upload or interactive debugging. The 16 KB Flash accommodates classroom projects while the PIC18 instruction set is well documented in textbooks and Microchip's MPLAB Xpress cloud IDE. Compared to QFN-packaged modern MCUs, the SPDIP-28 part reduces student frustration and dropped boards by roughly 80% during lab sessions.
Empfohlen
USB-Connected Home Automation Sensor Node
For USB-powered home automation sensor nodes (e.g., window/door sensors with USB diagnostics), the PIC18LF24K50-E/SP offers low sleep current, integrated USB, and capacitive touch wake-up. The nanoWatt XLP feature allows the device to draw under 100 nA in sleep, while USB plug-in events wake the MCU for diagnostics or firmware update. The 2 KB SRAM supports modest buffer depths, and the 14-channel ADC monitors up to 14 sensors. Compared to designs using a separate touch controller, ADC, and MCU, this part eliminates two ICs and reduces quiescent current by 30-50%.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PIC18LF24K50-E/SP – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | PIC18F24K50-E/SP | PIC18LF25K50-E/SP | PIC18F25K50-E/SP | PIC18LF24K42-I/SP | PIC18LF24K40-I/SP | PIC18LF23K22-E/SP |
|---|---|---|---|---|---|---|---|
| Package | 28-SPDIP (SP) | 28-SPDIP (SP) - same | 28-SPDIP (SP) - same | 28-SPDIP (SP) - same | 28-SPDIP (SP) - same | 28-SPDIP (SP) - same | 28-SPDIP (SP) - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Flash Memory | 16 KB | 16 KB | 32 KB | 32 KB | 16 KB | 16 KB | 8 KB |
| SRAM | 2048 bytes | 2048 bytes | 2048 bytes | 2048 bytes | 2048 bytes | 1024 bytes | 512 bytes |
| Supply Voltage (VDD) | 1.8 V to 3.6 V | 1.8 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| USB Peripheral | Yes (FS, integrated transceiver) | Yes (FS, integrated transceiver) | Yes (FS, integrated transceiver) | Yes (FS, integrated transceiver) | No | No | No |
| CPU Frequency (max) | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 64 MHz | 64 MHz | 64 MHz |
| Operating Temperature | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C |
Wichtigste Unterscheidungsmerkmale
- Integrated USB 2.0 full-speed transceiver with on-chip 3.3V regulator (vs. PIC18LF24K42-I/SP)
- nanoWatt XLP ultra-low-power sleep current (~20 nA typical) (vs. PIC18F4550-I/P)
- On-chip CTMU for capacitive touch sensing without external analog ICs (vs. PIC18LF24K40-I/SP)
- 1.8 V to 3.6 V low-voltage operation with same peripherals as 5V variants (vs. PIC18F24K50-E/SP (5V variant))
Designhinweise
Estimated: at 48 MHz CPU active and full USB enumeration, core current draws ~10 mA typical from a 3.3 V rail. Place a 4.7 uF bulk plus 100 nF high-frequency decoupling capacitor pair within 5 mm of VDD (pin 20) and VSS (pin 8). The internal USB 3.3 V regulator on pin 27 (VUSB) requires a 220 nF ceramic bypass. For bus-powered designs, ensure total current including I/O loads stays under 100 mA in unit load, or implement current limiting per USB 2.0 spec section 7.2.
Route the USB D- (pin 28) and D+ (pin 23 on QFN packages; on SPDIP-28 the USB lines are multiplexed to RC4) as a 90-ohm differential microstrip on the top layer over a continuous ground plane, with matching trace lengths within 150 mil (3.8 mm) and no splits in the reference plane beneath the traces. Keep D+/D- trace length under 50 mm total. Series source impedance should be 27 ohm to 33 ohm per line near the MCU pin to suppress reflections; Microchip reference designs use 27 ohm 1% resistors.
Do not leave the MCLR/RE3 pin (pin 1) floating - it requires a 10 kohm pull-up to VDD for normal operation. When using ICSP debug, add a current-limiting resistor (typically 4.7 kohm) between MCLR and VDD to allow the programmer to override the pull-up. Forgetting the 220 nF bypass on VUSB (pin 27) results in USB enumeration failures under heavy bus traffic. Programming flash below 1.8 V violates the spec - design VDD to remain above 2.0 V during programming. The internal 16 MHz HFINTOSC is sufficient for USB operation; external crystal on OSC1/OSC2 is optional.
Estimated: the analog input channels AN0-AN13 share digital I/O pins and exhibit ~100 ohm switch resistance when the pin is configured as analog. For high-impedance sensor sources (>10 kohm), use shorter traces or buffer the signal with an op-amp. The CTMU (Charge Time Measurement Unit) requires stable ADC voltage reference; connect VREF+ to AVdd and VREF- to AVss for capacitive touch accuracy within +/-5 pF. For EMI-sensitive applications, place a ferrite bead on VUSB and add a 1 nF X7R capacitor across D+/D- near the connector.
Estimated: at maximum 48 MHz CPU with active USB, internal dissipation is approximately 50 mW to 100 mW. Junction temperature rise in free air is under 5 C, well within the -40 C to +125 C operating range. The SPDIP-28 package has theta_JA of approximately 60 C/W; no heatsink is required. However, for industrial designs sealed in non-ventilated enclosures, derate CPU speed to 32 MHz or add thermal vias to the VDD/VSS ground ring to maintain junction temperature below 100 C at 50 C ambient.
Compliance-Informationen
RoHS and REACH compliant per Microchip product page. AEC-Q100 not applicable (industrial/consumer grade); for automotive AEC-Q100 grade, use the PIC18F24K50-E/SP automotive variant. Lead-free and halogen-free per Microchip material declaration. Conflict-minerals compliant per Microchip supplier program.
