PIC18LF56K42-I/PT - 64KB Flash 8-Bit MCU | Microchip | XLP 18K
Référence : PIC18LF56K42-I/PT ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $4.32 | $4,32 |
| 10 | $3.78 | $37,80 |
| 100 | $3.25 | $325,00 |
| 500 | $2.84 | $1 420,00 |
| 1 000 | $2.5 | $2 500,00 |
PIC18LF56K42-I/PT Présentation
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash), volatile data memory (RAM), EEPROM for parameter storage, and configurable peripherals such as ADC, timers and communication interfaces on one silicon die. MCUs sit below microprocessors in system hierarchy and above discrete logic, serving as the embedded controller in everything from battery-powered sensors to industrial motor drives. The 8-bit PIC18 family uses a Harvard RISC architecture with hardware multiplier and 16-bit wide instruction paths for C-friendly code density.
Key features of the PIC18LF56K42 include the 12-bit ADC2 with up to 32 channels and oversampling, vectored interrupt controller with prioritised latency, peripheral DMA offloading core data movement, and the MAP (Memory Access Partition) feature for code protection and bootloader segmentation. The XLP (eXtreme Low Power) designation targets battery applications with sub-uA sleep currents.
The 48-pin TQFP-EP package exposes a thermal pad (EP) for low theta-JA and supports industrial temperature grade -40C to +85C. The part is suitable for IoT sensor nodes, low-power motor control and consumer appliances where extended battery life and integrated analog simplify BOM.
Designers should populate the exposed thermal pad with a continuous copper pour to dissipate transient loads, route VDD/VSS pairs as wide traces, and place the 0.1 uF + 1 uF decoupling network within 2 mm of each power pin.
This page synthesises distributor pricing, drop-in alternatives and practical design notes not found in the manufacturer datasheet alone, helping procurement and embedded engineers select the right MCU in a single view.
Alternatives de remplacement direct pour PIC18LF56K42-I/PT — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC18LF56K42-I/PT (même facteur de forme et même empreinte) — différant par Package, ADC, Core, EEPROM, Program Memory (Flash).
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC18F56K42-I/PT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC18LF56K42T-I/PT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC18LF57K42-I/PT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC18LF46K42-I/PT
✅ Remplacement direct✓ En stock
$2.4 / unité
Voir la fiche technique →PIC18LF27K42-I/SS
✅ Remplacement direct✓ En stock
$1.85 / unité
Voir la fiche technique →PIC18LF56K42-I/PT Valeurs maximales et caractéristiques électriques
| Core Architecture | PIC18 (8-bit Harvard RISC) |
| Series | PIC XLP 18K (LF variant) |
| Fréquence d'horloge maximale | 64 MHz |
| Program Memory (Flash) | 64 KB (32K x 16) |
| Data RAM | 4 KB |
| EEPROM | 256 B |
| Number of I/Os | 44 |
| ADC Resolution | 12-bit ADC2 |
| Tension d'alimentation de fonctionnement | 1.8 V to 3.6 V |
| Température de fonctionnement | -40C to +85C (Industrial) |
| Boîtier | 48-TQFP-EP (7x7 mm) |
| Type de montage | Surface Mount |
| Largeur du bus de données | 8-bit |
| On-chip Peripherals | DMA, MAP, DIA, DAC, Comp, PWM |
| Statut RoHS | Compliant |
Configuration des broches de PIC18LF56K42-I/PT
| Broche 1 | RA0 — PORTA digital I/O / analog input |
| Broche 2 | RA1 — PORTA digital I/O / analog input |
| Broche 3 | RA2 — PORTA digital I/O / analog input |
| Broche 4 | RA3 — PORTA digital I/O / analog input |
| Broche 5 | RA4 — PORTA digital I/O / analog input |
| Broche 6 | RA5 — PORTA digital I/O / analog input |
| Broche 7 | RA6 — PORTA digital I/O / analog input |
| Broche 8 | RA7 — PORTA digital I/O / analog input |
| Broche 9 | VSS — Ground reference |
| Broche 10 | RB0 — PORTB digital I/O / analog input |
| Broche 11 | RB1 — PORTB digital I/O / analog input |
| Broche 12 | RB2 — PORTB digital I/O / analog input |
| Broche 13 | RB3 — PORTB digital I/O / analog input |
| Broche 14 | RB4 — PORTB digital I/O / analog input |
| Broche 15 | RB5 — PORTB digital I/O / analog input |
| Broche 16 | RB6 — PORTB digital I/O / analog input |
| Broche 17 | RB7 — PORTB digital I/O / analog input |
| Broche 18 | VSS — Ground reference |
| Broche 19 | RC0 — PORTC digital I/O |
| Broche 20 | RC1 — PORTC digital I/O |
| Broche 21 | RC2 — PORTC digital I/O |
| Broche 22 | RC3 — PORTC digital I/O |
| Broche 23 | RC4 — PORTC digital I/O |
| Broche 24 | RC5 — PORTC digital I/O |
| Broche 25 | RC6 — PORTC digital I/O |
| Broche 26 | RC7 — PORTC digital I/O |
| Broche 27 | VSS — Ground reference |
| Broche 28 | RD0 — PORTD digital I/O |
| Broche 29 | RD1 — PORTD digital I/O |
| Broche 30 | RD2 — PORTD digital I/O |
| Broche 31 | RD3 — PORTD digital I/O |
| Broche 32 | RD4 — PORTD digital I/O |
| Broche 33 | RD5 — PORTD digital I/O |
| Broche 34 | RD6 — PORTD digital I/O |
| Broche 35 | RD7 — PORTD digital I/O |
| Broche 36 | VSS — Ground reference |
| Broche 37 | RE0 — PORTE digital I/O |
| Broche 38 | RE1 — PORTE digital I/O |
| Broche 39 | RE2 — PORTE digital I/O |
| Broche 40 | RE3 — PORTE digital I/O |
| Broche 41 | VDD — Positive supply voltage |
| Broche 42 | VDD — Positive supply voltage |
| Broche 43 | RF0 — PORTF digital I/O / analog input |
| Broche 44 | RF1 — PORTF digital I/O / analog input |
| Broche 45 | RF2 — PORTF digital I/O / analog input |
| Broche 46 | RF3 — PORTF digital I/O / analog input |
| Broche 47 | RF4 — PORTF digital I/O / analog input |
| Broche 48 | RF5 — PORTF digital I/O / analog input |
Applications typiques
PIC18LF56K42-I/PT convient pour 6 applications: Battery-Powered IoT Sensor Nodes, Industrial Sensor Signal Conditioning, Low-Power Motor Control (BLDC / Stepper), Consumer Appliance User Interface, Smart Home and Connected Lighting, Medical Wearable Monitoring.
Battery-Powered IoT Sensor Nodes
The PIC18LF56K42-I/PT is well matched to battery-powered IoT sensor nodes because its XLP (eXtreme Low Power) design achieves Deep Sleep currents below 100 nA with the RTC running, while still exposing a 12-bit ADC2 with DMA that can wake the core only when a sensor threshold is exceeded. At 64 MHz the LF variant draws under 8 mA active, so a typical 2400 mAh AA cell lasts years in duty-cycled wireless sensor duty. The 64 KB Flash accommodates a small LoRaWAN, BLE stack or proprietary Sub-GHz link layer without external memory.
Recommandé
Industrial Sensor Signal Conditioning
In industrial 4 mA to 20 mA loop-powered sensor conditioning, the PIC18LF56K42-I/PT delivers the 12-bit ADC2 with built-in oversampling to push effective resolution above 14 bits for RTD, thermocouple and bridge readouts. Its 44 I/O accommodate keypad, LCD bias generation, HART or RS-485 interface and watchdog supervisor wiring. The -40C to +85C industrial temperature grade plus DMA offload let the core stay asleep while ADC samples accumulate, reducing self-heating in tightly sealed field instrument enclosures.
Recommandé
Low-Power Motor Control (BLDC / Stepper)
The PIC18LF56K42-I/PT is a strong fit for small brushless DC and stepper motor controllers, integrating up to four PWM channels with complementary outputs, dead-band generators and fault shut-down inputs. The 64 MHz core closes the FOC current loop in tens of microseconds, while the 12-bit ADC2 samples back-EMF or shunt voltage synchronously to the PWM centre. The 48-TQFP-EP thermal pad dissipates the MCU's own losses so the PCB doubles as a heatsink for the FET bridge.
Recommandé
Consumer Appliance User Interface
For white-goods and small kitchen appliances, the PIC18LF56K42-I/PT drives 7-segment or character LCDs, capacitive touch buttons and triac-based AC loads using its high-current sink I/O. The 256-byte EEPROM stores user-setpoints and fault logs across power cycles, while MAP (Memory Access Partition) protects the calibration block from accidental firmware overwrites. The XLP sleep current under 100 nA keeps standby power consumption below the 0.5 W EU eco-design threshold.
Recommandé
Smart Home and Connected Lighting
Smart-home hubs and connected LED drivers use the PIC18LF56K42-I/PT as the application controller that bridges low-power wireless modules with dimming PWM and DALI bus interfaces. The DMA channels move DMX/DALI frames between UART and PWM peripherals without CPU intervention, leaving cycles for HTTPS-over-Wi-Fi coordination on a co-processor. With 1.8 V to 3.6 V operation the MCU co-exists with the latest 1.8 V radio SoCs on a single rail without level shifters.
Recommandé
Medical Wearable Monitoring
Wearable health patches leverage the PIC18LF56K42-I/PT to sample pulse oximetry, ECG or skin-temperature channels with the 12-bit ADC2, then store trend data in the 4 KB RAM before BLE bursts. Deep Sleep at roughly 50 nA with RTC running lets a 3 V coin cell sustain continuous monitoring for weeks, and the -40C to +85C rating covers skin-mount and cold-storage use cases. Hardware DMA reduces the time spent in active mode, indirectly extending battery life between charges.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC18LF56K42-I/PT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC18F56K42-I/PT | PIC18LF56K42T-I/PT | PIC18LF57K42-I/PT | PIC18LF46K42-I/PT | PIC18LF27K42-I/SS |
|---|---|---|---|---|---|---|
| Package | 48-TQFP-EP (7x7 mm) | 48-TQFP-EP - same | 48-TQFP-EP - same | 48-TQFP-EP - same | 40-TQFP | 28-SSOP |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 64 KB | 64 KB | 64 KB | 128 KB | 64 KB | 128 KB |
| Operating Voltage | 1.8 V to 3.6 V | 2.3 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 | 1.8 V to 3.6 V |
| Maximum Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| I/O Count | 44 | 44 | 44 | 44 | 36 | 23 |
| ADC | 12-bit ADC2 | 12-bit ADC2 | 12-bit ADC2 | 12-bit ADC2 | 12-bit ADC2 | 12-bit ADC2 |
| RAM | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 2 KB |
Principaux différenciateurs
- XLP deep-sleep below 100 nA with RTC running (vs PIC18LF27K42-I/SS)
- 48-pin TQFP-EP with 44 I/O for richer peripherals (vs PIC18LF46K42-I/PT)
- Same pinout as F variant for supply-rail migration (vs PIC18F56K42-I/PT)
Notes de conception
Place a 1 uF ceramic decoupling capacitor within 2 mm of each VDD/VDDCORE pin pair (pins 41, 42 on the TQFP-EP) and a 0.1 uF high-frequency bypass on the same side of the PCB. The PIC18LF56K42-I/PT draws brief inrush currents when the ADC2 or DMA engines start; clustering the capacitors prevents the rail collapsing and corrupting ADC readings in battery-powered designs where the source impedance is high.
Solder the exposed thermal pad (EP) on the underside of the 48-TQFP-EP to a continuous ground pour of at least 25 mm x 25 mm of 1 oz copper. Although the LF part rarely dissipates more than 30 mW, the EP also acts as the primary electrical return path for the silicon substrate; failing to stitch the pad with multiple thermal vias can raise junction temperature 10 C to 15 C above the 25 C ambient reference, triggering ADC self-heating drift.
Route the HFOSC clock trace to the crystal or external oscillator with a guard trace tied to ground, and keep the trace shorter than 5 mm to avoid ringing at 64 MHz. The ICSP/PGD and PGC pins (typically RA0/RA1 in TQFP-EP) should be brought out to an in-circuit programming header without series resistors, since Microchip's MPLAB Snap and ICD 4 programmers expect direct access during debug.
Do not exceed 3.6 V on VDD or leave VDD floating during power-up sequencing; the LF process lacks 5 V tolerance and will latch-up. Likewise, do not drive an analog pin above VDD + 0.3 V - the ADC2 front-end clamps internally but persistent over-voltage degrades the input leakage spec. If you must interface 5 V signals, route them through the PIC18F56K42-I/PT variant instead, which shares the same pinout but tolerates 5 V analog inputs.
Informations de conformité
Industrial temperature grade only (-40C to +85C); AEC-Q100 qualified variants are listed separately under the PIC18F56K42-E/PT or PIC18LF56K42-E/PT suffixes. RoHS compliant per Microchip product page.