PIC18F2620T-I/SO - 8-Bit 40MHz 64KB Flash MCU 28-SOIC | Microchip
Référence : PIC18F2620T-I/SO ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $8.61 | $8,61 |
| 10 | $7.78 | $77,80 |
| 100 | $6.95 | $695,00 |
| 500 | $6.12 | $3 060,00 |
| 1 000 | $5.4 | $5 400,00 |
PIC18F2620T-I/SO Présentation
An 8-bit microcontroller (MCU) is a small, self-contained computer-on-a-chip that integrates an 8-bit CPU, program memory (Flash), data memory (RAM and EEPROM), and a rich set of peripheral modules into a single IC. Within the broader semiconductor taxonomy, an MCU belongs to microcontrollers -> microprocessors and controllers -> digital logic ICs -> integrated circuits. The PIC18 architecture implements an enhanced RISC instruction set with 16-bit opcodes, a hardware multiplier, and linear (non-paged) program memory addressing up to 2 MB - significantly more capable than baseline PIC16 devices while retaining the simplicity of the PIC ecosystem.
The PIC18F2620 features 3,968 bytes of RAM, 1,024 bytes of EEPROM, 25 digital I/O pins, and a 10-bit ADC with up to 12 channels. It supports a wide supply range of 4.2 V to 5.5 V (with extended 2.0 V operation under specific conditions), making it compatible with 5 V system designs. Communication peripherals include one USB 2.0 (full-speed, low-speed) interface, one SPI, one I2C, and one enhanced USART module. The nanoWatt Technology power-management suite provides multiple idle and sleep modes for low-power applications. The device also includes a 4x hardware PLL for higher clock frequencies and a self-programmable Flash architecture for bootloader-style in-field updates.
Architecturally, the PIC18F2620 uses a Harvard architecture with separate program and data buses, enabling simultaneous instruction fetch and operand access - this is the foundation of its single-cycle instruction throughput at 10 MIPS peak. Its 40 MHz oscillator, when multiplied by the internal 4x PLL, can yield an effective 96 MHz instruction clock for high-throughput signal processing tasks. The enhanced 16-level-deep hardware return stack supports deeply nested subroutine calls without software intervention, while the C compiler-friendly architecture simplifies firmware porting from other platforms.
Typical applications include USB peripherals, industrial control panels, sensor conditioning front-ends, low-speed data loggers, white goods and appliance control, HVAC controls, automotive body and chassis subsystems (using other automotive-graded variants), and educational embedded platforms where 5 V-tolerant GPIO and a familiar PIC toolchain are preferred. Its combination of USB, ADC, PWM and serial interfaces makes it well-suited as a general-purpose I/O and connectivity hub.
When designing with this MCU, ensure the supply voltage stays within 4.2 V to 5.5 V for the full 40 MHz operation; brown-out reset (BOR) thresholds should be configured to match the system rail. Adequate decoupling (100 nF + 10 uF) close to the VDD/VSS pins is recommended to suppress switching noise. The 'T' suffix packaging variant is intended for high-volume automated assembly and does not change the silicon.
This page synthesizes distributor pricing, pin-compatible drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Alternatives de remplacement direct pour PIC18F2620T-I/SO — 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 PIC18F2620T-I/SO (même facteur de forme et même empreinte) — différant par ADC, Package, Operating Temperature, Timers, Maximum CPU Speed.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC18F2620-I/SO
✅ Remplacement direct✓ En stock
$5.21 / unité
Voir la fiche technique →PIC18F25K22-I/SO
✅ Remplacement direct✓ En stock
$1.78 / unité
Voir la fiche technique →PIC18F26K22-I/SO
✅ Remplacement direct✓ En stock
$2.62 / unité
Voir la fiche technique →PIC18F2610-I/SO
✅ Remplacement direct✓ En stock
$3.95 / unité
Voir la fiche technique →PIC18F2520-I/SO
✅ Remplacement direct✓ En stock
$4.65 / unité
Voir la fiche technique →PIC18F2580-I/SO
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC18F2620T-I/SO Valeurs maximales et caractéristiques électriques
| Series | PIC® 18F |
| Core Processor | PIC |
| Core Size | 8-Bit |
| Maximum CPU Speed | 40 MHz |
| Program Memory (Flash) | 64 KB (32K x 16) |
| Data RAM | 3,968 bytes |
| Data EEPROM | 1,024 bytes |
| Number of I/O Pins | 25 |
| Supply Voltage (VDD) | 4.2 V to 5.5 V |
| ADC | 10-bit, up to 12 channels |
| USB | USB 2.0 Full-Speed / Low-Speed (1 port) |
| Communication Interfaces | 1x SPI, 1x I2C, 1x Enhanced USART |
| PWM Modules | 2x 10-bit PWM (CCP/ECCP) |
| Timers | 4x 8/16-bit |
| Boîtier | 28-SOIC (7.50 mm width) |
| Température de fonctionnement | -40C to +85C (Industrial grade) |
| Type de montage | Surface Mount (Tape & Reel) |
| Statut RoHS | Compliant |
Configuration des broches de PIC18F2620T-I/SO
| Broche 1 | RA2/AN2/VREF- — Port A bit 2 / Analog input 2 / ADC VREF- |
| Broche 2 | RA3/AN3/VREF+ — Port A bit 3 / Analog input 3 / ADC VREF+ |
| Broche 3 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| Broche 4 | RA5/AN4/SS — Port A bit 5 / Analog input 4 / SPI slave select |
| Broche 5 | RE0/RD/AN5 — Port E bit 0 / Read control for PSP / Analog input 5 |
| Broche 6 | RE1/WR/AN6 — Port E bit 1 / Write control for PSP / Analog input 6 |
| Broche 7 | RE2/CS/AN7 — Port E bit 2 / Chip select for PSP / Analog input 7 |
| Broche 8 | VDD — Positive supply voltage (4.2V to 5.5V) |
| Broche 9 | OSC1/CLKI/RA7 — Crystal oscillator input / External clock input / Port A bit 7 |
| Broche 10 | OSC2/CLKO/RA6 — Crystal oscillator output / Clock output / Port A bit 6 |
| Broche 11 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer1 oscillator output / Timer1 clock input |
| Broche 12 | RC1/T1OSI — Port C bit 1 / Timer1 oscillator input |
| Broche 13 | RC2/CCP1 — Port C bit 2 / CCP1 PWM/capture/compare |
| Broche 14 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| Broche 15 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| Broche 16 | RC5/SDO — Port C bit 5 / SPI data out |
| Broche 17 | RC6/TX/CK — Port C bit 6 / USART TX / USART synchronous clock |
| Broche 18 | RC7/RX/DT — Port C bit 7 / USART RX / USART synchronous data |
| Broche 19 | VSS — Ground reference |
| Broche 20 | VDD — Positive supply voltage (4.2V to 5.5V) |
| Broche 21 | RB0/INT0 — Port B bit 0 / External interrupt 0 |
| Broche 22 | RB1/INT1 — Port B bit 1 / External interrupt 1 |
| Broche 23 | RB2/INT2 — Port B bit 2 / External interrupt 2 |
| Broche 24 | RB3/CCP2 — Port B bit 3 / CCP2 PWM/capture/compare |
| Broche 25 | RB4 — Port B bit 4 |
| Broche 26 | RB5 — Port B bit 5 |
| Broche 27 | RB6/PGC — Port B bit 6 / ICSP clock |
| Broche 28 | RB7/PGD — Port B bit 7 / ICSP data |
Applications typiques
PIC18F2620T-I/SO convient pour 6 applications: USB Peripheral Devices, Industrial Sensor Conditioning, White Goods and Appliance Control, HVAC and Building Automation, Data Acquisition and Instrumentation, Educational and Hobby Embedded Platforms.
USB Peripheral Devices
The PIC18F2620's integrated USB 2.0 Full/Low-Speed transceiver makes it ideal for USB peripherals such as HID input devices, USB-to-UART bridges, and data-acquisition front-ends. At 40 MHz the MCU executes 10 MIPS, comfortably handling USB interrupt service routines while servicing 12-channel 10-bit ADC sampling and SPI/I2C sensor reads. The 5 V-tolerant GPIO also allows direct interfacing with legacy 5 V peripherals. Use the on-chip SIE and internal D+ pull-up to reduce external BOM to a B-type connector plus ESD protection - a complete USB device in roughly 15 external components. Compared with PIC18F2520, this part is preferred where USB connectivity is required.
Recommandé
Industrial Sensor Conditioning
The PIC18F2620's 12-channel 10-bit ADC and 5 V-tolerant GPIO are well-matched to industrial sensor conditioning boards that read 4-20 mA loops, thermistors, and bridge-type transducers. The 40 MHz CPU closes the digital filter loop quickly, while the 64 KB Flash accommodates Modbus RTU or CANopen protocol stacks. The Industrial -40C to +85C temperature range supports factory-floor and outdoor cabinet installations. Using nanoWatt idle modes, average current stays in the single-digit mA range even with multiple sensors polled - useful for battery-backed remote telemetry units.
Recommandé
White Goods and Appliance Control
The PIC18F2620's 25 GPIO pins, 4 timers, and 2 PWM channels cover the I/O requirements of mid-complexity appliances such as washing-machine control boards, dishwasher front panels, and refrigerator display modules. The 64 KB Flash is sufficient for control law firmware, user-interface state machines, and fault logging, while the 3,968-byte RAM buffers diagnostic data without overflow. The Industrial temperature range tolerates the thermal environment inside appliance cabinets. Combined with its 5 V-tolerant I/O and low BOM cost, the part competes effectively in cost-sensitive high-volume appliance designs.
Recommandé
HVAC and Building Automation
The PIC18F2620's combination of ADC channels, PWM outputs, and serial interfaces fits HVAC damper/valve controllers, room thermostats, and building-automation nodes. The 10-bit ADC provides adequate resolution for thermistor and humidity-sensor reads, while the PWM channels drive proportional valves and triac-fired relays. The 64 KB Flash fits BACnet MS/TP or Modbus application-layer stacks with room to spare for vendor-specific feature sets. The Industrial temperature range supports equipment-room installation with elevated ambient temperatures during peak HVAC operation.
Recommandé
Data Acquisition and Instrumentation
For low-speed multi-channel data loggers and bench-top instrumentation, the PIC18F2620's 12-channel ADC, 64 KB Flash, and USB interface enable PC-connected DAQ modules without an external ADC. At 40 MHz, sampling throughput reaches approximately 100 ksps aggregate - suitable for thermocouple scanning, strain-gauge readout, and process-control analog monitoring. The on-chip EEPROM stores calibration constants, eliminating external NV memory. Its standard Microchip MPLAB X development environment reduces time-to-prototype versus proprietary DSP-based DAQ designs.
Recommandé
Educational and Hobby Embedded Platforms
The PIC18F2620 is a popular choice for advanced embedded-systems curricula, hobbyist robotics, and PIC-based development boards because of its 5 V-tolerant GPIO, generous 64 KB Flash for student projects, and mature Microchip toolchain (MPLAB X IDE, XC8 compiler, PICkit 5 programmer). At $8.61 unit, it remains cost-effective for classroom kits, while the rich peripheral set encourages exploration of USB, ADC, PWM, and serial protocols. Its 28-SOIC footprint is also breadboard-friendly via SO-to-DIP adapter boards, making it accessible for learners without fine-pitch soldering skills.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC18F2620T-I/SO — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC18F2620-I/SO | PIC18F25K22-I/SO | PIC18F26K22-I/SO | PIC18F2610-I/SO | PIC18F2520-I/SO | PIC18F2580-I/SO |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC | 28-SOIC (tube) | 28-SOIC | 28-SOIC | 28-SOIC | 28-SOIC | 28-SOIC |
| Core | 8-bit PIC18 | 8-bit PIC18 | 8-bit PIC18 | 8-bit PIC18 | 8-bit PIC18 | 8-bit PIC18 | 8-bit PIC18 |
| Maximum CPU Speed | 40 MHz | 40 MHz | 64 MHz | 64 MHz | 40 MHz | 40 MHz | 40 MHz |
| Program Memory (Flash) | 64 KB | 64 KB | 32 KB | 128 KB | 64 KB | 32 KB | 32 KB |
| Data RAM | 3,968 bytes | 3,968 bytes | 16,384 bytes | 3,896 bytes | 3,968 bytes | 1,536 bytes | 1,536 bytes |
| USB Peripheral | Yes (USB 2.0 FS/LS) | Yes (USB 2.0 FS/LS) | No | No | No (CAN instead) | No | No (CAN instead) |
| ADC | 10-bit, 12 ch | 10-bit, 12 ch | 10-bit, 19 ch | 10-bit, 19 ch | 10-bit, 12 ch | 10-bit, 12 ch | 10-bit, 12 ch |
| Operating Voltage | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V |
Principaux différenciateurs
- Integrated USB 2.0 Full/Low-Speed transceiver (vs PIC18F2520-I/SO)
- Highest memory in PIC18F2x20 28-SOIC generation (vs PIC18F2520-I/SO)
- Compatible with MPLAB X and PICkit 5 toolchain (vs PIC18F26K22-I/SO)
Notes de conception
Decouple each VDD/VSS pair with a 100 nF ceramic capacitor placed within 5 mm of the IC pins, plus a bulk 10 uF tantalum or aluminum-polymer cap on the main rail. According to the Microchip PIC18F2620 datasheet (DS39662E), the device may glitch if the bulk cap is omitted under high-current USB traffic. In USB applications, route VUSB through a separate ferrite bead to isolate USB transceiver noise from the digital core.
The PIC18F2620 requires configuration bits to be programmed before any code executes. A common pitfall is to leave the oscillator configuration at the default 'RC oscillator' setting, which prevents external crystals from starting. Configure CONFIG1H (e.g., _XTAL_OSC_HS_1H or _HS_PLL) before code generation. Additionally, disable the watchdog timer in the configuration if not required - many application notes recommend this to prevent unintended resets during USB enumeration stalls.
Place the 28-SOIC across a ground pour to reduce EMI and provide a low-impedance return path for high-frequency USB signals. Keep the USB D+/D- traces matched within 2 mm length, 90 ohms differential impedance, and routed over a continuous ground plane. According to the Microchip USB design checklist, place the 15 kohm pull-down on D- for low-speed devices or rely on the internal pull-up on D+ for full-speed enumeration.
When the 40 MHz oscillator is multiplied by the internal 4x PLL to 96 MHz, the resulting instruction clock can generate harmonics that disturb the ADC. Enable the A/D converter with adequate acquisition time (ACQT >= 1.6 us for 5 V operation) and avoid running high-current GPIO toggles during conversions. Adding a small RC filter on VDD (10 ohm + 10 uF) further reduces switching noise coupling into the analog rail.
Informations de conformité
RoHS and lead-free confirmed per Microchip product page. AEC-Q100 not applicable - this part is Industrial-grade, not automotive-qualified. Halogen-free status not explicitly listed; verify with Microchip environmental compliance documentation.
