PIC18LF26K42T-I/MX - 64KB Flash, 64MHz 8-bit MCU | Microchip
Teilenummer: PIC18LF26K42T-I/MX ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $2.71 | $2,71 |
| 10 | $2.45 | $24,50 |
| 100 | $2.18 | $218,00 |
| 500 | $1.95 | $975,00 |
| 1.000 | $1.72 | $1.720,00 |
PIC18LF26K42T-I/MX Übersicht
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), working memory (RAM), non-volatile user memory (EEPROM or Data Flash), and a rich set of on-chip peripherals such as timers, ADCs, communication interfaces, and Core Independent Peripherals (CIPs). In the broader system hierarchy, an MCU sits between a microprocessor (which requires external memory and peripherals) and a dedicated ASIC, and is the standard building block for embedded systems. The PIC18F K42 family combines the legacy PIC18 instruction set with modern CIP blocks (CWG, DSM, NCO, Configurable Logic Cell, etc.), giving developers both deterministic 8-bit simplicity and DSP-class peripheral integration.
Key features of the PIC18LF26K42T-I/MX include 12-bit ADC with up to 35 channels, on-chip Direct Memory Access (DMA) controller, vectored interrupts with interrupt-on-change, 5-bit DAC, 8-bit DAC, two I2C/SPI, two UART, and full-speed USB 2.0 device support on selected parts. The K42 family is also notable for its idle/doze/sleep current in the sub-microamp range, qualifying it under the eXtreme Low Power (XLP) banner for battery-powered designs.
Architecturally, the part uses a 16-bit modified Harvard bus, an 8-bit ALU with hardware multiplier, and a 31-level hardware stack for C-language friendly operation. The DMA engine allows peripherals to move data to/from RAM without waking the CPU, a significant advantage for power-constrained sensor nodes. Vectored interrupts reduce context save/restore latency, allowing deterministic response times that rival many Cortex-M0/M0+ devices.
Typical applications include low-power IoT sensor nodes, USB human-interface devices (HID), portable medical peripherals, automotive body controllers, and home appliance user panels where the K42's CIP blocks (CLC, NCO, CWG) replace discrete glue logic. The 1.8V minimum VDD makes it suitable for direct connection to single-cell Li-ion batteries after regulation.
Designers should plan the system clock (HFINTOSC vs crystal vs PLL) carefully because the K42's peripherals are clocked from different sources and a mismatch can cause timing surprises. The exposed thermal pad on the UQFN-28 (MX) package must be soldered to a ground pad for mechanical reliability and to maintain the datasheet thermal resistance; the device is rated -40C to +85C (industrial, "I" suffix).
This page synthesizes distributor pricing across 8 channels, parametric drop-in alternatives sourced from cross-reference data, and practical design notes that go beyond the manufacturer datasheet's body-device technical reference manual.
Drop-in-Alternativen für PIC18LF26K42T-I/MX – 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 PIC18LF26K42T-I/MX (gleiche Bauform und Footprint) – abweichend in ADC, Package, Operating Temperature, Core, Comparators.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PIC18LF26K42-I/MX
✅ Drop-In✓ Auf Lager
$1.62 / Stück
Datenblatt ansehen →PIC18LF26K42T-E/MX
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
PIC18LF26K42-I/ML
✅ Drop-In✓ Auf Lager
$2.62 / Stück
Datenblatt ansehen →PIC18LF26K42-I/SS
✅ Drop-In✓ Auf Lager
$2.02 / Stück
Datenblatt ansehen →PIC18F26K42T-I/MX
✅ Drop-In✓ Auf Lager
$1.62 / Stück
Datenblatt ansehen →PIC18LF26K40T-I/ML
✅ Drop-In✓ Auf Lager
$1.39 / Stück
Datenblatt ansehen →PIC18LF25K42T-I/ML
✅ Drop-In✓ Auf Lager
$1.18 / Stück
Datenblatt ansehen →PIC18LF26K42T-I/MX Grenzwerte & elektrische Eigenschaften
| Manufacturer | Microchip Technology |
| Product Family | PIC18F K42 |
| Core | PIC18 (8-bit RISC) |
| Program Memory (Flash) | 64 KB (64K x 8) |
| Data SRAM | 4 KB |
| Data EEPROM | 1 KB |
| Maximum CPU Frequency | 64 MHz |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| I/O Pins | 25 |
| ADC | 12-bit, up to 35 channels |
| DAC | 5-bit and 8-bit |
| Communication Interfaces | 2x I2C/SPI, 2x UART, USB 2.0 FS |
| DMA Controller | Yes (on-chip) |
| Vectored Interrupts | Yes |
| Gehäuse | 28-pin UQFN (6x6 mm) with exposed pad |
| Montageart | Surface Mount |
| Betriebstemperatur | -40 C to +85 C (Industrial, "I") |
| RoHS-Status | Compliant |
PIC18LF26K42T-I/MX Pin-Konfiguration
| Pin 1 | RA0/AN0 — GPIO/Analog input 0 (AN0) |
| Pin 2 | RA1/AN1 — GPIO/Analog input 1 (AN1) |
| Pin 3 | RA2/AN2 — GPIO/Analog input 2 (AN2) |
| Pin 4 | RA3/AN3 — GPIO/Analog input 3 (AN3) |
| Pin 5 | RA4/AN4 — GPIO/Analog input 4 (AN4) |
| Pin 6 | RA5/AN5 — GPIO/Analog input 5 (AN5) |
| Pin 7 | RA6/AN6 — GPIO/Analog input 6 (AN6) |
| Pin 8 | RA7/AN7 — GPIO/Analog input 7 (AN7) |
| Pin 9 | VSS — Ground |
| Pin 10 | VDD — Positive supply voltage (1.8-3.6V) |
| Pin 11 | RB0/AN8 — GPIO/Analog input 8 (AN8) |
| Pin 12 | RB1/AN9 — GPIO/Analog input 9 (AN9) |
| Pin 13 | RB2/AN10 — GPIO/Analog input 10 (AN10) |
| Pin 14 | RB3/AN11 — GPIO/Analog input 11 (AN11) |
| Pin 15 | RB4/AN12 — GPIO/Analog input 12 (AN12) |
| Pin 16 | RB5/AN13 — GPIO/Analog input 13 (AN13) |
| Pin 17 | RB6/ICSPCLK — GPIO/Debug clock (ICSP) |
| Pin 18 | RB7/ICSPDAT — GPIO/Debug data (ICSP) |
| Pin 19 | RC0 — GPIO/PPS remappable peripheral |
| Pin 20 | RC1 — GPIO/PPS remappable peripheral |
| Pin 21 | RC2 — GPIO/PPS remappable peripheral |
| Pin 22 | RC3 — GPIO/PPS remappable peripheral |
| Pin 23 | RC4 — GPIO/PPS remappable peripheral |
| Pin 24 | RC5 — GPIO/PPS remappable peripheral |
| Pin 25 | RC6 — GPIO/PPS remappable peripheral |
| Pin 26 | RC7 — GPIO/PPS remappable peripheral |
| Pin 27 | RE0 — GPIO (or variant uses RA6 pin) |
| Pin 28 | RE1 — GPIO (or variant uses RA7 pin) |
Typische Anwendungen
PIC18LF26K42T-I/MX ist geeignet für 7 Anwendungs: Low-Power IoT Sensor Nodes, USB Human Interface Devices, Portable Medical Peripherals, Automotive Body Controllers, Home Appliance User Panels, Industrial Sensor Transmitters, Battery-Powered Consumer Electronics.
Low-Power IoT Sensor Nodes
The PIC18LF26K42T-I/MX is well suited for battery-powered IoT sensor nodes thanks to its 1.8 V minimum VDD and sub-microamp XLP sleep currents. Its on-chip 12-bit ADC and CTMU enable direct connection to analog sensors and capacitive touch interfaces without external signal conditioning, while the DMA controller moves ADC results into RAM without waking the CPU, keeping average current below 50 uA in duty-cycled 1-second measurement intervals.
Empfohlen
USB Human Interface Devices
The PIC18LF26K42T-I/MX integrates a full-speed USB 2.0 device controller with on-chip transceiver, making it a strong fit for USB HID peripherals such as keyboards, mice, game controllers, and custom input devices. The K42's DMA engine offloads USB endpoint servicing from the CPU, freeing cycles for HID report processing. Combined with 64 KB Flash for HID descriptor tables and 4 KB SRAM for buffer space, designers can deliver full-speed USB without external controllers.
Empfohlen
Portable Medical Peripherals
The PIC18LF26K42T-I/MX supports portable medical peripherals where low EMI and deterministic response time matter. Vectored interrupts provide sub-microsecond interrupt latency for sensor sampling windows, while the 12-bit ADC with internal voltage reference delivers diagnostic-grade measurement accuracy. Operating from 1.8 V-3.6 V allows direct connection to single-cell Li-ion packs commonly found in handheld patient monitors and pulse oximeters.
Empfohlen
Automotive Body Controllers
The PIC18LF26K42 family serves automotive body and interior modules such as seat controllers, ambient lighting drivers, and HVAC panels. The CIP block set (CLC, NCO, CWG) replaces discrete timers and glue logic, reducing BOM cost and PCB area. With industrial -40 C to +85 C temperature coverage on the I-suffix variant and extended -40 C to +125 C on the E-suffix, the K42 handles under-dash and cabin environments reliably.
Empfohlen
Home Appliance User Panels
The PIC18LF26K42T-I/MX drives capacitive touch user panels in washing machines, microwave ovens, and induction cooktops. The on-chip CTMU and 12-bit ADC enable up to 25 touch buttons without an external touch controller, while the CWG and PWM modules drive LED indicators and triac interfaces. The K42's Core Independent Peripherals free the CPU to handle communication and user logic concurrently.
Empfohlen
Industrial Sensor Transmitters
The PIC18LF26K42T-I/MX is a strong fit for 4-20 mA industrial sensor transmitters and field instrumentation. The 12-bit ADC with internal 1.024 V reference provides calibrated measurement, while the UART interface connects directly to RS-485 transceivers. Industrial temperature rating (-40 C to +85 C) and the K42's CIP peripherals allow a single MCU to handle sensing, linearization, and HART-style communication without a companion ASIC.
Empfohlen
Battery-Powered Consumer Electronics
The PIC18LF26K42T-I/MX is well suited to battery-powered consumer electronics such as wireless presenters, fitness bands, and remote controls where coin-cell or AAA battery life is paramount. Sub-100 nA sleep current with RTCC preserves calendar time, while <1 uA sleep with full RAM retention keeps state across sleep cycles. Direct battery connection at 1.8 V eliminates boost converters, reducing BOM cost and quiescent drain.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PIC18LF26K42T-I/MX – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | PIC18LF26K42-I/MX | PIC18LF26K42T-E/MX | PIC18LF26K42-I/ML | PIC18LF26K42-I/SS | PIC18LF26K40T-I/ML | PIC18LF25K42T-I/ML | PIC18F26K42T-I/MX |
|---|---|---|---|---|---|---|---|---|
| Package | 28-UQFN (6x6 mm) | 28-UQFN (6x6 mm) - same | 28-UQFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | 28-SSOP - same pin count, wider body | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | 28-UQFN (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 32 KB | 32 KB | 64 KB |
| Max CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Supply Voltage (VDD) | 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 | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.3 V to 5.5 V |
| Temperature Range | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| I/O Pins | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 25 |
| ADC Resolution | 12-bit | 12-bit | 12-bit | 12-bit | 12-bit | 12-bit | 12-bit | 12-bit |
| DMA Controller | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Unit Price (qty 1) | $2.71 | $2.50 (tray) | $3.20 (extended temp) | $2.65 | $2.55 | $2.30 | $2.40 | $2.75 |
Wichtigste Unterscheidungsmerkmale
- Lowest voltage operation in PIC18F K42 family (vs. PIC18F26K42T-I/MX)
- Larger Flash than K40 and K25 alternatives (vs. PIC18LF26K40T-I/ML and PIC18LF25K42T-I/ML)
- Extended temperature option in same package (vs. PIC18LF26K42T-I/MX (this part, -40C to +85C))
- On-chip DMA controller (vs. PIC18LF25K22-I/SO)
Designhinweise
The 28-pin UQFN (6x6 mm) package has an exposed thermal pad that MUST be soldered to a 1:1 PCB land pad for mechanical reliability, thermal performance, and ground reference. Use an array of thermal vias (0.3 mm drill, 0.5 mm pitch, 4-9 vias) connecting the EP to the internal ground plane. Skip-via placement under the die is preferred to wick solder during reflow. Stencil apertures for the EP should be split into a 2x2 or 3x3 grid to prevent solder balling.
Decouple VDD with a 100 nF X7R ceramic capacitor placed within 2 mm of the VDD pin, in parallel with a 10 uF X5R bulk capacitor. The K42 has separate analog and digital supply pins on larger packages; on the 28-UQFN, AVdd and Vdd share a single pin, so keep analog and digital ground returns separated until they meet at the bulk capacitor ground. A ferrite bead between digital and analog sections reduces ADC noise coupling from switching I/O.
Do not program CONFIG bits for HFINTOSC at 64 MHz when VDD is below 2.7 V - the K42 LF variants are derated to 32 MHz below 2.7 V per datasheet DS40001919. Brown-out Reset (BOR) must be enabled in CONFIG2 to ensure clean startup; without BOR the LF variant can latch up below 1.6 V. Use ICSP pins (RB6/RB7) carefully - these are shared with GPIO and internal weak pull-ups can interfere with programming.
Route the 12-bit ADC traces away from switching nodes such as PWM outputs and the CWG carrier. Place the ADC reference decoupling capacitor (typically 100 nF) within 2 mm of the VREF+ pin. Keep the ICSP header accessible even in production designs - field firmware updates via ICSP require access to RB6/RB7, VDD, VSS, and MCLR. Consider a TAG ID footprint for production traceability.
Estimated: USB DP/DM traces on the K42 should be 45-ohm differential (90 ohm differential), matched to within 0.5 mm, and routed over an unbroken ground plane. Total DP/DM trace length should not exceed 50 mm to keep within the USB 2.0 full-speed rise-time budget. Place the 27-ohm series termination resistors within 2 mm of the MCU DP/DM pins. Add a common-mode choke for ESD-sensitive applications.
Compliance-Informationen
RoHS compliant per Microchip product page. AEC-Q100 qualification is on the PIC18LF26K42T-E/MX (automotive) and PIC18F26K42-E/SP variants, not the I-suffix industrial variant listed here. Halogen-free per Microchip green-compliance policy.
