PIC18F55K42-I/MV - 8-Bit 64MHz MCU, 32KB Flash, 48-UQFN | Microchip
Référence : PIC18F55K42-I/MV ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $1.62 | $1,62 |
| 10 | $1.45 | $14,50 |
| 100 | $1.12 | $112,00 |
| 500 | $0.97 | $485,00 |
| 1 000 | $0.86 | $860,00 |
PIC18F55K42-I/MV Présentation
An 8-bit PIC microcontroller is a Harvard-architecture RISC CPU with separate program and data buses, optimized for deterministic real-time control. Within Microchip's taxonomy the part belongs to PIC18 (high-performance 8-bit) -> PIC microcontroller -> microcontroller -> embedded controller -> semiconductor. The XLP (eXtreme Low Power) family extends this lineage with nanoWatt sleep modes that allow battery-powered nodes to remain active for years on a single cell.
Key differentiating features include DMA-capable peripherals that move data without CPU intervention, a vectored interrupt controller with two programmable priority levels, two-level hardware context saving, and CIPs such as CLC, NCO, PWM and the configurable logic cell that let designers build state machines in hardware. The 12-bit ADC2 includes automated averaging, threshold comparison, and zero-crossing detection that offload typical signal-chaining math from the core.
The architecture uses a 16-bit instruction word with 8-bit data path and an internal 64 MHz oscillator; instruction execution is four clock cycles. The MV package suffix denotes the 48-pin UQFN (MV) industrial-grade (-40 C to +85 C) variant, distinguished from the low-power PIC18LF55K42 sibling only by its operating voltage range (2.3-5.5 V vs 1.8-3.6 V). Hardware CTE (code-protection) and ICD/ICSP debug pins are present.
Typical applications include consumer appliance control, IoT sensor hubs, low-power wireless gateways (paired with RN2483 or MRF24XA), USB-CDC human-interface devices, industrial LED drivers, and small motor-control BLDC fans. The high pin count makes the device well-suited to systems that previously required 40-pin parts but now need more I/O for capacitive touch or segmented displays.
A practical design tip: place a 100 nF decoupling capacitor on every VDD/AVDD pair and a bulk 10 uF near the package exposed pad; the EP must be soldered to the ground plane for thermal dissipation and signal integrity. Use the MAP feature to lock the bootloader region from accidental erase.
This page consolidates current distributor pricing, drop-in alternatives, and practical design notes not gathered in the manufacturer datasheet alone, allowing engineers to evaluate the PIC18F55K42-I/MV against modern 8-bit and 32-bit alternatives before committing to a BOM line.
Alternatives de remplacement direct pour PIC18F55K42-I/MV — 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 PIC18F55K42-I/MV (même facteur de forme et même empreinte) — différant par Package, ADC, Program Memory (Flash), DAC, Comparators.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC18F55K42T-I/MV
✅ Remplacement direct✓ En stock
$1.65 / unité
Voir la fiche technique →PIC18F55K42-E/MV
✅ Remplacement direct✓ En stock
$1.82 / unité
Voir la fiche technique →PIC18F56K42-I/MV
✅ Remplacement direct✓ En stock
$1.45 / unité
Voir la fiche technique →PIC18F57K42-I/MV
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC18F46K22-E/MV
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$2.72 / unité
Voir la fiche technique →PIC18F55K42-I/MV Valeurs maximales et caractéristiques électriques
| Family | PIC18 XLP 18K |
| CPU Core | PIC18 8-bit RISC |
| Maximum CPU Frequency | 64 MHz |
| Program Memory (Flash) | 32 KB (16K x 16) |
| Data SRAM | 2 KB |
| Data EEPROM | 256 bytes |
| Boîtier | 48-UQFN (6x6 mm) with exposed pad |
| Nombre de broches | 48 |
| Operating Voltage (VDD) | 2.3 V to 5.5 V |
| Température de fonctionnement | -40 C to +85 C (Industrial) |
| ADC | 12-bit ADC2 with Computation, up to 43 channels |
| DAC | 5-bit DAC |
| Comparators | On-chip |
| PWM Channels | Multiple 16-bit PWM |
| DMA | Yes (Core Independent) |
| Vector Interrupts | Yes, programmable priority |
| Core Independent Peripherals (CIP) | CLC, NCO, CWG, DSM |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant |
Configuration des broches de PIC18F55K42-I/MV
| Broche 1 | RA0/IOVDD — PORTA0 / I/O supply |
| Broche 2 | RA1 — PORTA1 |
| Broche 3 | RA2 — PORTA2 |
| Broche 4 | RA3 — PORTA3 |
| Broche 5 | RA4 — PORTA4 |
| Broche 6 | RA5 — PORTA5 |
| Broche 7 | RA6 — PORTA6 |
| Broche 8 | RA7 — PORTA7 |
| Broche 9 | VSS — Ground |
| Broche 10 | VDD — Core supply |
| Broche 11 | RB0 — PORTB0 |
| Broche 12 | RB1 — PORTB1 |
| Broche 13 | RB2 — PORTB2 |
| Broche 14 | RB3 — PORTB3 |
| Broche 15 | RB4 — PORTB4 |
| Broche 16 | RB5 — PORTB5 |
| Broche 17 | RB6/ICSPCLK — PORTB6 / ICD clock |
| Broche 18 | RB7/ICSPDAT — PORTB7 / ICD data |
| Broche 19 | AVSS — Analog ground |
| Broche 20 | AVDD — Analog supply |
| Broche 21 | RC0 — PORTC0 |
| Broche 22 | RC1 — PORTC1 |
| Broche 23 | RC2 — PORTC2 |
| Broche 24 | RC3 — PORTC3 |
| Broche 25 | RC4 — PORTC4 |
| Broche 26 | RC5 — PORTC5 |
| Broche 27 | RC6 — PORTC6 |
| Broche 28 | RC7 — PORTC7 |
| Broche 29 | VSS — Ground |
| Broche 30 | VDD — Core supply |
| Broche 31 | RD0 — PORTD0 |
| Broche 32 | RD1 — PORTD1 |
| Broche 33 | RD2 — PORTD2 |
| Broche 34 | RD3 — PORTD3 |
| Broche 35 | RD4 — PORTD4 |
| Broche 36 | RD5 — PORTD5 |
| Broche 37 | RD6 — PORTD6 |
| Broche 38 | RD7 — PORTD7 |
| Broche 39 | RE0 — PORTE0 |
| Broche 40 | RE1 — PORTE1 |
| Broche 41 | RE2 — PORTE2 |
| Broche 42 | RE3 — PORTE3 |
| Broche 43 | RE4 — PORTE4 |
| Broche 44 | RE5 — PORTE5 |
| Broche 45 | RE6 — PORTE6 |
| Broche 46 | RE7 — PORTE7 |
| Broche 47 | OSC1/CLKI — External oscillator input |
| Broche 48 | OSC2/CLKO — External oscillator output |
Applications typiques
PIC18F55K42-I/MV convient pour 6 applications: Battery-Powered IoT Sensor Hub, Consumer Appliance Control (HMI), Industrial LED Lighting Driver, Small BLDC Motor Control Fan, USB-CDC Human Interface Device, Smart Home Edge Node.
Battery-Powered IoT Sensor Hub
The PIC18F55K42-I/MV is well suited to battery-powered IoT sensor hubs because its XLP architecture achieves 50 nA typical sleep current with full RAM retention, allowing multi-year operation on a single CR2032 cell. The 32 KB Flash is sufficient for application code plus a ZigBee or LoRa driver, and the 12-bit ADC2 with Computation provides on-chip averaging and threshold detection that offload routine signal conditioning from the CPU. Its DMA controller moves ADC results to RAM without waking the core, further reducing average current. Pair the part with an MRF24XA or RN2483 sub-GHz transceiver to build a complete sensor node.
Recommandé
Consumer Appliance Control (HMI)
The PIC18F55K42-I/MV's 48-UQFN pin count provides enough I/O to drive segmented LCDs, capacitive touch buttons, multiple LEDs, and a control triac on a single chip in a washing-machine or dishwasher front panel. Its 64 MHz CPU handles mTouch capacitive-touch libraries and a real-time state machine for safety interlocks, while the PWM outputs drive motor-control signals with up to 16-bit resolution. The on-chip comparators and 5-bit DAC support closed-loop motor current sensing without external analog ICs.
Recommandé
Industrial LED Lighting Driver
The PIC18F55K42-I/MV delivers 16-bit PWM resolution and Core Independent Peripherals such as CLC and NCO that allow designers to implement constant-current LED drivers and DMX-style dimming protocols without CPU overhead. Its 2.3-5.5 V operating range is compatible with both 3.3 V logic and 5 V analog driver stages. The CWG (Complementary Waveform Generator) and DSM (Data Signal Modulator) peripherals generate dead-band-controlled complementary PWM signals needed for high-brightness LED half-bridge drivers up to several hundred kHz.
Recommandé
Small BLDC Motor Control Fan
The PIC18F55K42-I/MV can drive small sensorless BLDC fans using its on-chip comparators for back-EMF zero-cross detection, the DSM peripheral for noise-robust commutation timing, and the DMA controller to stream ADC samples into memory for sensorless startup algorithms. The 64 MHz CPU executes field-oriented-control math at sufficient rate for fans up to a few hundred watts. Industrial-grade -40 C to +85 C operation makes the part suitable for fan trays in telecom equipment or server racks.
Recommandé
USB-CDC Human Interface Device
The PIC18F55K42-I/MV can be paired with an external USB-UART bridge (MCP2200 or MCP2221A) to implement a USB CDC-class HID such as a custom keyboard, mouse, or configuration tool. The MCU's 32 KB Flash holds USB descriptor tables plus application code, and its 48 I/O pins are sufficient for scan-matrix keypads or rotary encoder inputs. Hardware vector interrupts with programmable priority guarantee sub-microsecond response time to user inputs without jitter.
Recommandé
Smart Home Edge Node
The PIC18F55K42-I/MV's XLP nanoWatt sleep modes make it ideal for battery-powered or energy-harvested smart-home edge nodes such as window sensors, leak detectors, and occupancy sensors. Its 12-bit ADC2 with Computation can sample a PIR sensor, light sensor, and thermistor at kHz rates while the core stays asleep. The DMA controller buffers samples to RAM and only wakes the CPU when an event exceeds threshold. Embedded in a 48-UQFN 6x6 mm footprint the entire MCU + a few passives fits on a coin-cell PCB less than 12 mm wide.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC18F55K42-I/MV — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC18F55K42T-I/MV | PIC18F55K42-E/MV | PIC18F56K42-I/MV | PIC18F57K42-I/MV | PIC18F46K22-E/MV |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 48-UQFN (6x6 mm) with EP | 48-UQFN (6x6 mm) with EP | 48-UQFN (6x6 mm) with EP | 48-UQFN (6x6 mm) with EP | 48-UQFN (6x6 mm) with EP | 40-UQFN (6x6 mm) with EP |
| Flash Memory | 32 KB | 32 KB | 32 KB | 64 KB | 128 KB | 64 KB |
| SRAM | 2 KB | 2 KB | 2 KB | 4 KB | 8 KB | 3.8 KB |
| EEPROM | 256 B | 256 B | 256 B | 1024 B | 1024 B | 1024 B |
| Maximum CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Operating Voltage | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 1.8 V to 3.6 V |
| Temperature Grade | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) |
| DMA Controller | Yes | Yes | Yes | Yes | Yes | No |
Principaux différenciateurs
- Highest pin count in the PIC18F55/56/57K42 XLP family (vs PIC18F46K22-E/MV)
- Core Independent Peripherals (CIPs) reduce CPU overhead (vs PIC18F46K22-E/MV)
- Vectored interrupts with two priority levels (vs PIC18F55K42T-I/MV)
- Scalable Flash options within the same footprint (vs PIC18F56K42-I/MV)
Notes de conception
Estimated: at 64 MHz full active CPU and 5.0 V VDD, the PIC18F55K42-I/MV typically draws 8-10 mA. Place a 100 nF decoupling capacitor on every VDD/AVDD pair within 3 mm of the package, plus a single 10 uF bulk ceramic near the exposed pad. The exposed pad must be soldered to a continuous ground plane to meet thermal and EMC targets. For sleep applications, use Sleep mode (50 nA typical) plus Retention mode for RAM persistence; document both wake-up latency (5 us Sleep, 6 us Retention) in firmware design.
Estimated: the 48-UQFN 6x6 mm package has a thermal pad that doubles as the primary ground return. Use a via array (0.3 mm vias on 1 mm pitch) below the EP tied to the ground plane; missing the EP connection increases junction temperature by 20-30 C at full CPU load and degrades ADC2 SNR by several dB. For trace routing, allocate the inner layer to a single uninterrupted ground plane and route signals on outer layers to maintain 50 ohm impedance on SPI/I2C lines.
Estimated: when routing the 12-bit ADC2 analog inputs, dedicate a separate AVDD pin pair and place an LC (10 uH ferrite + 10 uF + 100 nF) pi-filter to isolate the analog rail from digital noise. The DAC and reference inputs should bypass to AVSS (not digital VSS) for lowest noise. Use adjacent-pin ground returns instead of shared return paths. The K42 family ADC2 with Computation provides on-chip averaging; enable Accumulate-and-Average mode to reduce software overhead and effectively increase resolution by 1-2 bits.
Common pitfalls with the PIC18F55K42-I/MV: (1) Forgetting to write the WDTCPS configuration bit to disable the default watchdog timer; (2) Using the wrong Voltage Regulator mode configuration - selecting 'Low Voltage' on the F variant causes VREG lockup above 3.6 V; (3) Failing to solder the exposed pad, leading to ESD damage on adjacent I/O; (4) Not enabling the Program Memory Read Protection bit when shipping production firmware; (5) Selecting the internal HFINTOSC without writing the PLL multiplier bit, halving performance; (6) Omitting the 4.7 uF tantalum + 100 nF bulk on VDD/AVDD when driving PWM at >100 kHz, causing voltage droop and CPU resets.
Informations de conformité
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified; automotive customers should consider PIC18F55K42-E/MV (extended temp) and review Microchip's automotive-grade MCU portfolio separately. Lead-free and halogen-free per Microchip material declarations.
