PIC18F24K50T-I/SO - 48MHz 16KB Flash USB MCU | Microchip
Teilenummer: PIC18F24K50T-I/SO ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $3.1 | $3,10 |
| 10 | $2.85 | $28,50 |
| 100 | $2.55 | $255,00 |
| 500 | $2.25 | $1.125,00 |
| 1.000 | $1.98 | $1.980,00 |
PIC18F24K50T-I/SO Übersicht
An 8-bit microcontroller (MCU) is a programmable processor built around an 8-bit data path, combining CPU core, non-volatile program memory, RAM, peripherals and I/O into a single IC. The PIC18F24K50 belongs to the PIC18 family -> 8-bit PIC microcontroller -> microcontroller (MCU) -> embedded controller -> semiconductor IC. The device family is part of Microchip's PIC® XLP™ 18K series, marketed for "eXtreme Low Power" applications thanks to nanoWatt XLP technology, which keeps active current in the microamp range and sleep current below 100 nA in some modes.
Key features include 16 KB (8K x 16) of self-programmable Flash, 2 KB of SRAM, 256 bytes of EEPROM, an integrated full-speed USB 2.0 transceiver with on-chip voltage regulator, a 10-bit ADC up to 200 ksps, two 8-bit timers and three 16-bit timers, two comparators, an MSSP/SPI/I2C master/slave port, and a 25-channel 10-bit ADC. The device also integrates a 3.3V regulator intended for USB bus-powered applications.
The PIC18F24K50 uses a modified Harvard RISC architecture with a 16-bit instruction word and 8-bit data path, achieving up to 16 MIPS throughput at 48 MHz. The integrated USB module includes a dedicated transceiver, internal pull-up resistor generation, and Suspend/Resume logic, eliminating the need for an external USB transceiver IC in many designs.
Typical applications include USB human-interface devices (HID) such as keyboards and mice, USB-to-UART bridges, USB CDC virtual COM ports, USB sensor interfaces, embedded data loggers, and industrial control nodes that need a wired USB diagnostic interface. The wide 2.5-5.5V range also suits battery-powered and 5V industrial nodes.
When designing with this MCU, allocate proper PCB guard routing around the USB D+/D- differential pair to meet USB 2.0 full-speed signal-integrity requirements and provide a stable VUSB decoupling network. For low-power designs, take advantage of the nanoWatt XLP sleep modes and the on-board Low-Speed USB Suspend logic. Confirm that the chosen development toolchain (MPLAB X IDE, XC8 compiler, MPLAB PICkit 5) supports this exact device and package before PCB layout commitment.
This page synthesizes distributor stock and pricing, same-brand drop-in alternatives in identical 28-SOIC packages, and practical USB-layout design notes that go beyond the manufacturer datasheet alone.
Drop-in-Alternativen für PIC18F24K50T-I/SO – 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 PIC18F24K50T-I/SO (gleiche Bauform und Footprint) – abweichend in Package, Timers, Core Architecture, ADC, I/O Pins.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PIC18F24K50-I/SO
✅ Drop-In✓ Auf Lager
$2.05 / Stück
Datenblatt ansehen →PIC18F24K50T-I/ML
✅ Drop-In✓ Auf Lager
$1.85 / Stück
Datenblatt ansehen →PIC18F24K50-I/ML
✅ Drop-In✓ Auf Lager
$1.95 / Stück
Datenblatt ansehen →PIC18F24K50-E/SS
✅ Drop-In✓ Auf Lager
$1.79 / Stück
Datenblatt ansehen →PIC18F24J50T-I/ML
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$1.88 / Stück
Datenblatt ansehen →PIC18F24K50T-I/SO Grenzwerte & elektrische Eigenschaften
| Series | PIC® XLP™ 18K |
| Core | PIC18 8-bit RISC |
| Program Memory | 16 KB (8K x 16) Flash |
| EEPROM | 256 bytes |
| Maximum CPU Clock | 48 MHz |
| Throughput | 16 MIPS |
| Versorgungsspannung | 2.5 V to 5.5 V |
| Betriebstemperatur | -40C to +85C (Industrial) |
| ADC | 10-bit, 200 ksps |
| USB | USB 2.0 Full-Speed (12 Mbps), integrated transceiver |
| Timers | 2 x 8-bit, 3 x 16-bit |
| Comparators | 2 |
| Communication | 1 x MSSP (SPI/I2C), Enhanced USART |
| Gehäuse | 28-pin SOIC (SO), 7.50 mm body width |
| Montageart | Surface Mount |
| MSL-Level | 1 |
| RoHS-Status | Compliant |
| Lead-Free | Yes |
| Low-Power Technology | nanoWatt XLP™ |
PIC18F24K50T-I/SO Pin-Konfiguration
| Pin 1 | VDD — Positive supply voltage (2.5 V to 5.5 V) |
| Pin 2 | RA5 — Digital I/O / analog input |
| Pin 3 | RA4 — Digital I/O |
| Pin 4 | RA3 — Digital I/O |
| Pin 5 | RC5 — Digital I/O |
| Pin 6 | RC4 — Digital I/O |
| Pin 7 | RC3 — Digital I/O |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RC2 — Digital I/O |
| Pin 10 | RC1 — Digital I/O / CCP |
| Pin 11 | RC0 — Digital I/O |
| Pin 12 | RB7 — Digital I/O / ICSP PGD |
| Pin 13 | RB6 — Digital I/O / ICSP PGC |
| Pin 14 | RB5 — Digital I/O |
| Pin 15 | RB4 — Digital I/O / interrupt-on-change |
| Pin 16 | RB3 — Digital I/O |
| Pin 17 | RB2 — Digital I/O |
| Pin 18 | RB1 — Digital I/O / interrupt-on-change |
| Pin 19 | RB0 — Digital I/O / interrupt-on-change |
| Pin 20 | VDD — Positive supply voltage |
| Pin 21 | VSS — Ground reference |
| Pin 22 | RA0 — Digital I/O / analog input |
| Pin 23 | RA1 — Digital I/O / analog input |
| Pin 24 | D- — USB differential data minus |
| Pin 25 | D+ — USB differential data plus |
| Pin 26 | VUSB — USB 3.3 V regulator output |
| Pin 27 | MCLR — Master clear reset (active low) |
| Pin 28 | OSC1 — Crystal oscillator input |
Typische Anwendungen
PIC18F24K50T-I/SO ist geeignet für 6 Anwendungs: USB HID Keyboard / Mouse, USB CDC Virtual COM Port, Industrial Sensor Interface, USB Battery Charger / Power Bank Controller, Consumer USB Dongle, Educational / Hobby Development.
USB HID Keyboard / Mouse
The PIC18F24K50T-I/SO fits USB HID input devices thanks to its integrated USB 2.0 full-speed transceiver and 48 MHz CPU delivering 16 MIPS, which is enough headroom to service the 1 ms USB polling interval for HID reports without CPU stalls. Its 16 KB Flash comfortably stores USB HID report descriptors, keyboard matrices up to 8x18 scanning firmware, and CapLock/Numpad state machines, while the 256-byte EEPROM holds non-volatile user preferences such as backlight level and key repeat rate. Designers use the integrated 3.3 V regulator to power the internal USB transceiver directly from the 5 V VBUS, eliminating an external LDO. The 28-SOIC wide-body package also simplifies through-hole prototype adapters, useful during early mechanical integration. Concrete benefit: a USB keyboard reference design using this part achieves typical 50-100 uA suspend current thanks to nanoWatt XLP sleep modes.
Empfohlen
USB CDC Virtual COM Port
The PIC18F24K50T-I/SO is well suited for USB CDC virtual COM-port bridges that present a standard serial port to a host PC while exposing a UART to the embedded application. Its integrated USB transceiver and on-chip voltage regulator remove the need for external USB PHY components, and the 16 KB Flash accommodates the MPLAB Code Configurator CDC stack, ring-buffer management, and application command parser. The MSSP can run I2C or SPI alongside the UART, enabling a USB-to-multi-serial bridge in a single chip. The 48 MHz core guarantees deterministic latency for baud rates up to 921600 baud with hardware flow control. Trade-off: the CDC class has higher per-byte overhead than bulk endpoints, so designers handling 1 Mbps+ streams should consider the bulk endpoint variant or a faster MCU.
Empfohlen
Industrial Sensor Interface
The PIC18F24K50T-I/SO suits industrial sensor interfaces that require a USB diagnostic port plus analog and digital sensor channels. The 10-bit ADC at 200 ksps is sufficient for slow industrial transducers (temperature, pressure, 4-20 mA loop monitors), and the two comparators support windowed thresholds for over/under alarms. Its industrial -40C to +85C operating range and 2.5-5.5 V supply allow direct connection to 24 V industrial rails via a buck converter or 5 V USB bus. The integrated USB port allows field firmware upgrades without a dedicated programmer. Concrete benefit: a 4-channel thermocouple interface using this MCU can stream readings over CDC at 100 Hz with sub-100 uA quiescent current in sleep, leveraging the XLP low-power modes.
Empfohlen
USB Battery Charger / Power Bank Controller
The PIC18F24K50T-I/SO is a strong fit for USB battery charger and power-bank controllers that need USB BC 1.2 detection plus LED status indication and overcurrent protection logic. Its integrated USB transceiver negotiates USB BC 1.2 charging profiles and the MSSP can drive an I2C battery fuel gauge such as the MCP3421 or BQ27441. The 28-SOIC package dissipates up to 0.8 W comfortably and the wide 2.5-5.5 V supply tolerates Li-ion pack ranges from 2.5 V (deep-discharge cut-off) to 4.2 V (full charge). Trade-off: this MCU does not have an integrated high-side charge FET driver, so external MOSFETs are required for >2 A charging currents.
Empfohlen
Consumer USB Dongle
The PIC18F24K50T-I/SO is well matched to consumer USB dongles such as wireless receivers, programmable fobs, and security tokens. Its small 28-SOIC footprint, 16 KB Flash (enough for AES-128 firmware and pairing state), and integrated USB transceiver yield a 5-component BOM including passives. The nanoWatt XLP low-power technology keeps standby current under 5 uA on USB suspend, which is essential for bus-powered devices that must not exceed the USB 2.0 spec's 100 uA suspend budget. Concrete benefit: a wireless audio receiver dongle based on this MCU achieves 35 mA peak active current and 4 mA average when streaming 48 kHz audio over a paired I2S link.
Empfohlen
Educational / Hobby Development
The PIC18F24K50T-I/SO is a popular target for university embedded-systems courses and hobby projects because of its USB connectivity, well-documented peripheral set, and broad MPLAB X IDE support. Students can program a CDC virtual COM port example in a single afternoon and progress to HID, MSD, and composite USB device examples using the MPLAB Code Configurator. The 28-SOIC wide-body package is breadboard-friendly with a SOIC-to-DIP adapter, removing the need for fine-pitch soldering during learning. Concrete benefit: PICkit 5 debugging, ICSP programming, and free XC8 compiler integration allow students to focus on algorithm and protocol concepts rather than toolchain setup.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PIC18F24K50T-I/SO – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | PIC18F24K50-I/SO | PIC18F24K50T-I/ML | PIC18F24K50-I/ML | PIC18F24K50-E/SS | PIC18F24J50T-I/ML |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (SO) 7.50 mm | 28-SOIC (SO) 7.50 mm - identical | 28-QFN (ML) 6x6 mm | 28-QFN (ML) 6x6 mm | 28-SSOP (SS) 5.30 mm | 28-QFN (ML) 6x6 mm |
| Core | PIC18 8-bit, 48 MHz / 16 MIPS | PIC18 8-bit, 48 MHz / 16 MIPS | PIC18 8-bit, 48 MHz / 16 MIPS | PIC18 8-bit, 48 MHz / 16 MIPS | PIC18 8-bit, 48 MHz / 16 MIPS | PIC18J 8-bit, 48 MHz / 16 MIPS |
| Flash Memory | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| USB Transceiver | Integrated FS USB 2.0 + 3.3V regulator | Integrated FS USB 2.0 + 3.3V regulator | Integrated FS USB 2.0 + 3.3V regulator | Integrated FS USB 2.0 + 3.3V regulator | Integrated FS USB 2.0 + 3.3V regulator | Integrated FS USB 2.0 + 3.3V regulator |
| Supply Voltage | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 3.0 V to 3.6 V (J-series 3.3V only) |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) |
| Delivery Form | Tape & Reel | Tube | Tape & Reel | Tube | Tube | Tape & Reel |
| Parametric Fit | 100% (this part) | 100% | 90% | 90% | 90% | 80% |
Wichtigste Unterscheidungsmerkmale
- Integrated USB 2.0 transceiver + 3.3 V regulator (vs. PIC18F4550 family)
- nanoWatt XLP deep-sleep current below 100 nA (vs. PIC18F24J50T-I/ML)
- Dual-supply 2.5-5.5 V operation (vs. PIC18F24J50T-I/ML)
Designhinweise
USB 2.0 full-speed signal integrity requires a 90-ohm differential impedance on the D+/D- pair (pins 24/25) and matched-length routing under 50 mm. Place a 0.1 uF X7R bypass capacitor within 3 mm of VDD (pin 1 and pin 20) and a 4.7 uF bulk capacitor on the VUSB output (pin 26) to keep the internal 3.3 V regulator stable. Connect VSS pins 8 and 21 to a single uninterrupted ground pour that ties back to the USB connector shield, per USB 2.0 layout guidance in the Microchip PIC18F24K50 datasheet. Severity: critical.
Estimated: at 5 V VBUS input, 48 MHz active CPU, USB active enumeration, the PIC18F24K50T-I/SO draws approximately 12-15 mA typical, generating about 60-75 mW. The 28-SOIC package has theta_JA around 80 C/W on a 1 oz 4-layer board, giving a 5-6 C junction rise above ambient - well within the 85 C industrial limit. When enabling suspend mode, current drops to under 1.5 uA, which is critical for bus-powered designs to remain within the USB 2.0 100 uA suspend budget. Place a Schottky diode from VBUS to VDD to allow clean bus-powered or self-powered transitions.
Do not float MCLR (pin 27) - tie it to VDD through a 10 kohm pull-up resistor and add a 100 nF decoupling cap to ground for noise immunity, per Microchip's recommended reset circuit. Ensure ICSP programming pins PGD/PGC (RB7/RB6, pins 12/13) are not loaded with more than 25 pF of stray capacitance or in-circuit debug will fail. When using the USB regulator output (VUSB, pin 26) as the 3.3 V rail for external circuitry, do not exceed 50 mA of combined load, otherwise the internal LDO drops out and USB enumeration fails.
Estimated: for full-speed USB 12 Mbps operation, place the MCU within 50 mm of the USB connector to minimize stub lengths on D+/D-. Series ferrite beads are generally not needed for full-speed but may be added for EMI margin at 12 MHz fundamental. Keep digital switching traces (PWM, SPI clock) away from D+/D- by at least 5 mm to avoid coupled noise that can cause enumeration failures. Reference Microchip AN1188 'USB CDC Class on PIC18' for a full checklist.
Compliance-Informationen
RoHS and lead-free confirmed per Microchip product page material declaration. REACH compliance stated on Microchip environmental portal. Not AEC-Q100 qualified - this is an industrial/consumer grade part. For automotive designs, use PIC18F25K50 automotive-qualified variants instead.
