PIC18LF4620-I/PT - 8-bit 40MHz 64KB Flash MCU | Microchip TQFP-44
Référence : PIC18LF4620-I/PT ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $7.65 | $7,65 |
| 10 | $6.88 | $68,80 |
| 100 | $5.96 | $596,00 |
| 500 | $5.21 | $2 605,00 |
| 1 000 | $4.45 | $4 450,00 |
PIC18LF4620-I/PT Présentation
An 8-bit microcontroller (MCU) is a programmable processor that executes instructions 8 bits at a time and combines CPU, memory (Flash, RAM, EEPROM), peripherals (ADC, timers, UART, SPI, I2C, PWM), and I/O on a single silicon die. PIC18 microcontrollers occupy the high-performance tier of Microchip's 8-bit portfolio, sharing the PIC architecture lineage with PIC16 and PIC24/dsPIC families and targeting embedded control products where deterministic execution and low power matter more than raw MIPS. Within this hierarchy, PIC18LF4620 belongs to the F46xxx K-class subfamily that adds USB, CAN, and enhanced peripherals.
Key features include 64KB (32K x 16 words) self-programmable flash, 3968 bytes SRAM, 1024 bytes EEPROM, 13 ADC channels with 10-bit resolution, two comparators, two 8-bit timers and three 16-bit timers, two MSSP (SPI/I2C) and two EUSART ports, and nanoWatt technology that drops Iq below 100 nA in sleep mode. The 44-pin TQFP footprint and wide operating temperature range (-40C to +85C industrial grade) make it suitable for through-hole-replacement SMD designs.
The PIC18LF4620-I/PT uses an enhanced Harvard architecture with a 16-bit instruction word and 8-bit data path, allowing single-cycle 8x8 hardware multiply and single-cycle 16-bit fetch. The 40MHz internal clock drives 10 MIPS throughput, with 4x PLL options. nanoWatt dynamic clock switching lets the firmware trade MIPS for power at run-time. Master Clear, in-circuit serial programming (ICSP), and in-circuit debugger (ICD) interfaces are all retained on dedicated pins.
Typical applications include industrial sensor conditioning, USB HID peripherals, automotive body controllers, HVAC control panels, low-power remote sensing, and small appliances. With 36 I/O, the device can drive multiple keypads, LED matrices, or relays without external expanders.
When laying out, allocate the ICPG/ICPG clock pins away from PWM traces to avoid coupling, and place the 0.1uF Vdd decoupling within 5mm of each Vdd pin. An external 32.768 kHz crystal for Timer1 is recommended when real-time-clock accuracy matters.
This page aggregates DigiKey and Mouser distributor pricing, drop-in compatible replacements within the PIC18 family, application circuits and design notes that go beyond the manufacturer's datasheet alone.
Alternatives de remplacement direct pour PIC18LF4620-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 PIC18LF4620-I/PT (même facteur de forme et même empreinte) — différant par Package, Timers, ADC, Operating Temperature, Core Architecture.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC18LF4520-I/PT
✅ Remplacement direct✓ En stock
$5.21 / unité
Voir la fiche technique →PIC18F4620-I/PT
✅ Remplacement direct✓ En stock
$5.45 / unité
Voir la fiche technique →PIC18LF4685-I/PT
✅ Remplacement direct✓ En stock
$5.55 / unité
Voir la fiche technique →PIC18LF46K22-I/PT
✅ Remplacement direct✓ En stock
$1.35 / unité
Voir la fiche technique →PIC18LF45K80-I/PT
✅ Remplacement direct✓ En stock
$4.1 / unité
Voir la fiche technique →PIC18LF4580-I/PT
✅ Remplacement direct✓ En stock
$5.65 / unité
Voir la fiche technique →PIC18LF4620-I/PT Valeurs maximales et caractéristiques électriques
| Architecture | PIC18, 8-bit enhanced Harvard |
| CPU Core | PIC18 (8-bit data, 16-bit instruction) |
| Maximum CPU Clock | 40 MHz |
| Instruction Throughput | 10 MIPS |
| Program Memory (Flash) | 64 KB (32K x 16 words) |
| SRAM | 3968 bytes |
| EEPROM | 1024 bytes |
| Operating Voltage Range | 2.0 V to 5.5 V (LF variant) |
| I/O Pins | 36 |
| ADC | 10-bit, 13 channels |
| Timers | 2x 8-bit, 3x 16-bit |
| Communication | 2x MSSP (SPI/I2C), 2x EUSART, USB 2.0 FS |
| Boîtier | 44-pin TQFP (PT), 10x10 mm |
| Type de montage | Surface Mount |
| Température de fonctionnement | -40 C to +85 C (Industrial, I grade) |
| Power-Saving Modes | nanoWatt (sleep, idle, RC_RUN, RC_IDLE) |
| Programming/Debug | ICSP, ICD, in-circuit |
| Statut RoHS | Compliant |
Configuration des broches de PIC18LF4620-I/PT
| Broche 1 | MCLR — Master Clear (Reset, active-low) |
| Broche 2 | RA0/AN0 — Port A bit 0 / Analog input 0 |
| Broche 3 | RA1/AN1 — Port A bit 1 / Analog input 1 |
| Broche 4 | RA2/AN2/Vref- — Port A bit 2 / Analog input 2 / ADC Vref- |
| Broche 5 | RA3/AN3/Vref+ — Port A bit 3 / Analog input 3 / ADC Vref+ |
| Broche 6 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| Broche 7 | RA5/AN4/SS — Port A bit 5 / Analog input 4 / SPI slave select |
| Broche 8 | RE0/RD — Port E bit 0 / Parallel-port read strobe |
| Broche 9 | RE1/WR — Port E bit 1 / Parallel-port write strobe |
| Broche 10 | RE2/CS — Port E bit 2 / Parallel-port chip select |
| Broche 11 | VDD — Positive supply |
| Broche 12 | VSS — Ground |
| Broche 13 | OSC1/CLKI/RA7 — Oscillator input / external clock / Port A bit 7 |
| Broche 14 | OSC2/CLKO/RA6 — Oscillator output / clock out / Port A bit 6 |
| Broche 15 | RC0/T1OSO/T13CKI — Port C bit 0 / Timer1 oscillator output / T1 clock |
| Broche 16 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer1 oscillator input / CCP2 |
| Broche 17 | RC2/CCP1 — Port C bit 2 / Capture-Compare-PWM 1 |
| Broche 18 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| Broche 19 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| Broche 20 | RC5/SDO — Port C bit 5 / SPI data out |
| Broche 21 | RC6/TX/CK — Port C bit 6 / EUSART transmit / clock |
| Broche 22 | RC7/RX/DT — Port C bit 7 / EUSART receive / data |
| Broche 23 | RD0/PSP0 — Port D bit 0 / Parallel Slave Port data 0 |
| Broche 24 | RD1/PSP1 — Port D bit 1 / Parallel Slave Port data 1 |
| Broche 25 | RD2/PSP2 — Port D bit 2 / Parallel Slave Port data 2 |
| Broche 26 | RD3/PSP3 — Port D bit 3 / Parallel Slave Port data 3 |
| Broche 27 | RD4/PSP4 — Port D bit 4 / Parallel Slave Port data 4 |
| Broche 28 | RD5/PSP5 — Port D bit 5 / Parallel Slave Port data 5 |
| Broche 29 | RD6/PSP6 — Port D bit 6 / Parallel Slave Port data 6 |
| Broche 30 | RD7/PSP7 — Port D bit 7 / Parallel Slave Port data 7 |
| Broche 31 | VSS — Ground |
| Broche 32 | VDD — Positive supply |
| Broche 33 | RB0/INT0/FLT0 — Port B bit 0 / External interrupt 0 / PWM fault |
| Broche 34 | RB1/INT1 — Port B bit 1 / External interrupt 1 |
| Broche 35 | RB2/INT2 — Port B bit 2 / External interrupt 2 |
| Broche 36 | RB3/CCP2 — Port B bit 3 / CCP2 alt |
| Broche 37 | RB4 — Port B bit 4 (interrupt-on-change) |
| Broche 38 | RB5 — Port B bit 5 (interrupt-on-change) |
| Broche 39 | RB6/PGC — Port B bit 6 / ICSP clock (ICD) |
| Broche 40 | RB7/PGD — Port B bit 7 / ICSP data (ICD) |
| Broche 41 | RE3 — Port E bit 3 (digital only) |
| Broche 42 | RC7 — Port C bit 7 (alt function pin) |
| Broche 43 | RC6 — Port C bit 6 (alt function pin) |
| Broche 44 | RC5 — Port C bit 5 (alt function pin) |
Applications typiques
PIC18LF4620-I/PT convient pour 7 applications: USB HID / CDC Peripheral, Industrial Sensor Conditioning, Automotive Body Controllers, HVAC Control Panels, Low-Power Remote Sensing, Small Appliance Controllers, Educational / Hobby Development.
USB HID / CDC Peripheral
The PIC18LF4620 integrates a USB 2.0 full-speed device controller with on-chip transceiver, 1.5 kohm pull-up on D+, and dedicated interrupt vector. With 64KB flash it accommodates Microchip's USB stack (HID, CDC, MSD, composite) plus custom vendor-class firmware without external boot ROM. The 40MHz / 10 MIPS throughput handles 12 Mbps enumeration and full HID polling at 1 kHz with substantial CPU headroom. Compared to external USB serial chips (FTDI, MCP2200), the on-chip solution saves PCB area and BOM cost. Industrial users run CDC at 5V; medical or portable designs run at 3.3V using the LF variant. The same die also enables keyboard, mouse, gamepad, and custom HID products.
Recommandé
Industrial Sensor Conditioning
The PIC18LF4620's 13-channel 10-bit ADC and nanoWatt sleep modes make it well-suited for multi-sensor industrial front-ends. With 36 I/O it can read 4-20 mA loop sensors, PT100 RTDs via op-amp front end, and digital humidity sensors through the MSSP SPI channel simultaneously. The 1024-byte EEPROM stores calibration constants, while 64KB flash accommodates complex linearization math. Designers leverage the LF variant's 2.0V minimum to run from a single Li-ion cell with sub-uA sleep currents for battery-backup sensors. Industrial grade (-40C to +85C) supports outdoor and factory-floor deployments. The EUSART ports enable Modbus RTU masters or slaves in PLC-like control blocks.
Recommandé
Automotive Body Controllers
Although not AEC-Q100 qualified by Microchip product declaration, the PIC18LF4620 powers many body-control subsystems (interior lighting, seat controllers, mirror adjusters) where extended temperature and EMC robustness matter. The 36 I/O drives multiplexed LED arrays, motor bridges via PWM, and LIN slaves through the EUSART. The 2.0-5.5V operating range supports direct 5V or 3.3V regulation from the vehicle battery. The device supports automotive diagnostics via CCP/ECCP for capturing PWM edge timing on fuel injectors and crank sensors. For AEC-Q100-qualified variants, Microchip offers PIC18F46K22-I/PT or PIC18F46J11-I/PT as higher-temperature automotive alternatives.
Recommandé
HVAC Control Panels
The PIC18LF4620-I/PT's 36 I/O drive keypads, seven-segment displays, character LCDs, and triac-controlled line-voltage loads through optoisolators in HVAC thermostats and zone controllers. The MSSP/SPI interface connects to a non-volatile FRAM for black-box fault logging; the EUSARTs handle Modbus links to indoor air-quality sensors. nanoWatt idle reduces standby power below 50 uA in compliance with energy-star thermostats. With 64KB flash, designers add PID control loops, scheduling firmware, and ZigBee or Wi-Fi module hosts. The 2.0V minimum enables backup super-capacitor ride-through during brownouts. Industrial temperature rating covers basement-boiler installations.
Recommandé
Low-Power Remote Sensing
The PIC18LF4620's nanoWatt technology and 2.0V minimum make it well-suited for battery-powered remote sensors. Sleep currents below 100 nA allow multi-year operation on a single CR2032 cell when waking periodically via Watchdog Timer or external interrupt. The LF variant's 5.5V maximum protects against accidental overvoltage from unregulated solar or inductive sources. With 64KB flash the MCU hosts over-the-air bootloader protocols and 1024-byte EEPROM stores calibration and identification data. The 10-bit ADC with internal 1.2V reference provides ratiometric measurements without external references, lowering BOM. Suitable for wildlife trackers, smart agriculture nodes, and remote telemetry units.
Recommandé
Small Appliance Controllers
The PIC18LF4620-I/PT provides the control brain for small kitchen and household appliances such as coffee makers, blenders, induction cookers, and washing machines. The 36 I/O drive relays, TRIAC optocouplers, LED status indicators, and 7-segment displays. Hardware CCP/ECCP generates accurate zero-cross PWM for phase-angle dimming and TRIAC firing. With 64KB flash the firmware supports multilingual UI, recipe management, and BLE control via an external module. The 2.0V-5.5V range covers 3.3V and 5V designs from rectified-mains or USB-power input. Industrial -40C to +85C covers under-counter and garage installations.
Recommandé
Educational / Hobby Development
The PIC18LF4620-I/PT is a popular choice for student projects, hobby robotics, and OEM educational kits because it is supported by Microchip's free MPLAB X IDE, XC8 compiler, and the MPLAB PICkit 5 in-circuit debugger. With 64KB flash and 36 I/O, students can tackle UART/SPI/I2C, ADC, PWM, and USB projects on a single chip. The TQFP-44 package is breadboard-friendly with breakout boards, and the 2.0V-5.5V range tolerates bench power supplies and battery packs. The vast PIC18 ecosystem includes reference designs, app notes (AN851, AN947, AN992), and active community forums for debugging and learning. Industrial temperature grade handles laboratory and maker-space conditions.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC18LF4620-I/PT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC18LF4520-I/PT | PIC18F4620-I/PT | PIC18LF4685-I/PT | PIC18LF46K22-I/PT | PIC18LF45K80-I/PT |
|---|---|---|---|---|---|---|
| Package | TQFP-44 (PT) 10x10 mm | TQFP-44 (PT) 10x10 mm - same | TQFP-44 (PT) 10x10 mm - same | TQFP-44 (PT) 10x10 mm - same | TQFP-44 (PT) 10x10 mm - same | TQFP-44 (PT) 10x10 mm - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 64 KB | 32 KB (-50%) | 64 KB (same) | 96 KB (+50%) | 64 KB (same) | 32 KB (-50%) |
| SRAM | 3968 bytes | 1536 bytes (-61%) | 3968 bytes (same) | 3328 bytes (-16%) | 3896 bytes (-2%) | 2048 bytes (-48%) |
| Operating Voltage | 2.0V to 5.5V (LF) | 2.0V to 5.5V (LF) | 4.2V to 5.5V (F) | 2.0V to 5.5V (LF) | 1.8V to 5.5V (K-series) | 1.8V to 5.5V (K-series) |
| USB 2.0 FS | Yes (HW) | Yes (HW) | Yes (HW) | Yes (HW) | No | No |
| CAN 2.0B | No | No | No | No | No | Yes (HW) |
| Maximum Frequency | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS |
Principaux différenciateurs
- Drop-in flash upgrade without PCB change (vs PIC18LF4520-I/PT)
- Higher maximum throughput than F46xx predecessors (vs PIC18LF45K80-I/PT)
- USB hardware integrated (vs PIC18LF4580-I/PT)
Notes de conception
Place a 0.1uF ceramic decoupling capacitor within 5mm of each Vdd pin (pins 11 and 32 on TQFP-44); add a bulk 10uF tantalum or aluminum polymer capacitor adjacent to the MCU. The LF variant's 2.0V minimum requires that Vdd ramp cleanly without ringing; for battery applications use an MCP1700 LDO with 1uA Iq, and consider an MCP1640 boost if running from a single 1.5V cell. nanoWatt sleep currents below 100 nA are only achieved when all I/O are configured as outputs and the WDT is disabled.
Route the USB D+/D- traces as a 90-ohm differential pair on the top layer with continuous ground plane beneath, matching Microchip AN612 reference design. Keep OSC1/OSC2 traces short and surrounded by ground pour to avoid coupling into the USB or analog inputs. The ICSP/ICD pins (RB6/PGC, RB7/PGD) must remain accessible for programming even in production boards - either expose test pads or include a 2x3 0.1 inch header footprint.
Do not connect the MCLR pin directly to Vdd - always use a 10 kohm pull-up and 100 nF cap to ground for proper power-on reset. Ensure CONFIG bits are programmed (use MPLAB X default template) to enable brown-out reset (BOR) and watchdog timer (WDT). For USB designs, the internal 48 MHz PLL must be enabled in CONFIG1L and the USB regulator (3.3V internal) requires a 220 nF capacitor on Vusb. Analog pins configured as digital I/O will draw parasitic current unless explicitly switched to digital mode in ADCON1.
Informations de conformité
RoHS and lead-free per Microchip product declaration. AEC-Q100 qualification is not declared for this part; for automotive applications, Microchip recommends PIC18F46K22-I/PT or PIC18F46J11-I/PT automotive-grade variants.