PIC18F26K20T-I/SO - 64KB Flash 8-bit MCU 64MHz 28-SOIC | Microchip
MPN: PIC18F26K20T-I/SO ✓ AktifPIC18F26K20T-I/SO Ringkasan
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, peripherals, and I/O on one die, optimized for deterministic real-time control. The PIC18 family is Microchip's high-performance 8-bit line built on a RISC architecture with hardware multiply and a 16-bit instruction word; within this family, the K20 sub-family is the XLP (eXtreme Low Power) variant designed for battery-powered designs. PIC18 MCUs sit in the hierarchy: 8-bit microcontroller -> RISC MCU -> embedded controller -> semiconductor.
Key differentiating specifications include 64KB self-programmable flash with 1KB of EEPROM and 3968 bytes of SRAM, a 10-bit ADC with up to 17 channels, multiple communication peripherals (EUSART, MSSP for SPI/I2C), and nanoWatt XLP modes that drop quiescent current below 100 nA in sleep. The 28-pin SOIC package offers 25 remappable I/O pins via Peripheral Pin Select (PPS) and supports in-circuit serial programming (ICSP) and in-circuit debug (ICD).
The PIC18F26K20T-I/SO is built on an enhanced Harvard architecture with a 16-bit flash datapath and an 8-bit ALU; the result is single-cycle 200ns instruction execution at 20MHz and 16 MIPS at 64MHz. The device integrates a 10-bit successive-approximation ADC, two analog comparators, an 8-bit/16-bit timer stack, CCP/ECCP modules, and a charge-time measurement unit (CTMU) for capacitive touch.
Typical applications include industrial sensor nodes, low-power remote controls, battery-powered HVAC thermostats, USB HID peripherals, home appliances, automotive body modules, and consumer white goods. The combination of nanoWatt XLP sleep modes, peripheral pin select, and ample flash makes it a workhorse for cost-sensitive 8-bit embedded designs.
When designing with this part, add a 0.1 µF ceramic decoupling capacitor directly between VDD and VSS, place it within 5 mm of the MCU, and ensure the MCLR pull-up is at least 10 kΩ. Programming voltage is internally generated, so the ICSP interface connects directly to the device with no external 12V supply.
This page synthesizes real-time distributor pricing, drop-in alternatives, and practical design guidance distilled from the Microchip PIC18F26K20 datasheet and verified web sources.
Alternatif penggantian untuk PIC18F26K20T-I/SO — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian PIC18F26K20T-I/SO (sama faktor bentuk dan footprint) — berbeda di dalam Package, Timers, Family, Operating Temperature, Mounting Type.
PIC18F26K20-I/SO
✅ Drop-InKontak untuk harga
Lihat Datasheet →PIC18F26K20-I/SP
✅ Drop-InKontak untuk harga
Lihat Datasheet →PIC18F26K20T-I/ML
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
PIC18F26K20T-I/SS
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
PIC18F25K20T-I/SO
✅ Drop-InKontak untuk harga
Lihat Datasheet →PIC18F26K22T-I/SO
✅ Drop-InKontak untuk harga
Lihat Datasheet →PIC18F26K40T-I/SO
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
PIC18F26K20T-I/SO Rating Maksimal & Karakteristik Listrik
| Device Family | PIC18F XLP 18K |
| Core | PIC18 8-bit RISC |
| Program Memory (Flash) | 64 KB (32K x 16) |
| Data RAM | 3968 bytes |
| Data EEPROM | 1 KB |
| Maximum CPU Frequency | 64 MHz (16 MIPS) |
| Operating Voltage | 1.8 V to 3.6 V |
| I/O Pins | 25 |
| ADC | 10-bit, up to 17 channels |
| Comparators | 2 |
| Timers (8/16-bit) | Yes |
| CCP / ECCP | Yes |
| Communication | EUSART, MSSP (SPI/I2C) |
| CTMU (Capacitive Touch) | Yes |
| Peripheral Pin Select (PPS) | Yes |
| Suhu Kerja | -40°C to +85°C (Industrial) |
| Paket | 28-pin SOIC (SO), wide-body, Tape & Reel |
| Tipe Mounting | Surface Mount |
| Level MSL | 1 |
| Status RoHS | Compliant |
| Lead-Free | Yes |
Konfigurasi Pin PIC18F26K20T-I/SO
| Pin produk 1 | RA3/MCLR/VPP — Digital I/O / Master Clear reset / Programming voltage |
| Pin produk 2 | RA0/AN0 — Digital I/O / Analog input channel 0 |
| Pin produk 3 | RA1/AN1 — Digital I/O / Analog input channel 1 |
| Pin produk 4 | RA2/AN2/VREF- — Digital I/O / Analog input / ADC VREF- |
| Pin produk 5 | RA3/AN3/VREF+ — Digital I/O / Analog input / ADC VREF+ |
| Pin produk 6 | RA4/T0CKI/C1OUT — Digital I/O / Timer0 clock input / Comparator 1 output |
| Pin produk 7 | RA5/AN4/SS/HLVDIN/C2OUT — Digital I/O / Analog / SPI slave select / HLVD input / Comparator 2 output |
| Pin produk 8 | VSS — Ground reference |
| Pin produk 9 | RA7/OSC1/CLKIN — Digital I/O / Crystal oscillator input / External clock input |
| Pin produk 10 | RA6/OSC2/CLKOUT — Digital I/O / Crystal oscillator output / Clock output |
| Pin produk 11 | RC0/SOSCO — Digital I/O / Secondary oscillator output |
| Pin produk 12 | RC1/SOSCI — Digital I/O / Secondary oscillator input |
| Pin produk 13 | RC2/CCP1 — Digital I/O / Capture/Compare/PWM 1 |
| Pin produk 14 | RC3/SCL/SCK — Digital I/O / I2C clock / SPI clock |
| Pin produk 15 | RC4/SDA/SDI — Digital I/O / I2C data / SPI data in |
| Pin produk 16 | RC5/SDO — Digital I/O / SPI data out |
| Pin produk 17 | RC6/TX/CK — Digital I/O / EUSART TX / EUSART clock |
| Pin produk 18 | RC7/RX/DT — Digital I/O / EUSART RX / EUSART data |
| Pin produk 19 | VSS — Ground reference |
| Pin produk 20 | VDD — Positive supply voltage (1.8-3.6V) |
| Pin produk 21 | RB0/AN12/INT0 — Digital I/O / Analog / External interrupt 0 |
| Pin produk 22 | RB1/AN10/INT1 — Digital I/O / Analog / External interrupt 1 |
| Pin produk 23 | RB2/AN8/INT2 — Digital I/O / Analog / External interrupt 2 |
| Pin produk 24 | RB3/AN9/CCP2 — Digital I/O / Analog / Capture/Compare/PWM 2 |
| Pin produk 25 | RB4/AN11/KBI0 — Digital I/O / Analog / Interrupt-on-change |
| Pin produk 26 | RB5/KBI1/PGM — Digital I/O / Interrupt-on-change / LVP programming |
| Pin produk 27 | RB6/PGC — Digital I/O / ICD clock / ICSP clock |
| Pin produk 28 | RB7/PGD — Digital I/O / ICD data / ICSP data |
Aplikasi Umum
PIC18F26K20T-I/SO cocok untuk 7 aplikasis: Industrial Sensor Node, Battery-Powered Thermostat, USB HID Peripheral, Capacitive Touch User Interface, Automotive Body Electronics, Home Appliance Control Board, Wireless Sensor Edge Node.
Industrial Sensor Node
The PIC18F26K20T-I/SO suits industrial sensor hubs where its 64KB flash, 10-bit ADC with up to 17 channels, and nanoWatt XLP sleep below 100 nA deliver years of battery life. With 25 I/O via PPS the MCU reads thermocouples, pressure sensors, and digital inputs while the EUSART pushes data to a host PLC. The 1.8-3.6V range supports 3.3V lithium primary cells, and the SOIC-28 is easy to hand-prototype.
Direkomendasikan
Battery-Powered Thermostat
The PIC18F26K20T-I/SO is a strong fit for HVAC thermostats thanks to its nanoWatt XLP modes that hold sleep current below 100 nA while the CTMU drives capacitive touch buttons. The 64KB flash accommodates Modbus or BACnet stacks, the 10-bit ADC reads thermistor bridges with hardware averaging, and the 1.8-3.6V VDD lets designers run directly from two AA cells. The SOIC-28 footprint also eases UL 60730 pre-compliance work.
Direkomendasikan
USB HID Peripheral
The PIC18F26K20T-I/SO handles USB HID peripherals when paired with an external USB transceiver; the MSSP and EUSART peripherals implement SPI, I2C, and async serial links for keyboards, mice, and HID-class gamepads. The 64KB flash holds USB stacks plus application firmware, and PPS lets designers route USB interrupt logic to any pin. Its 64MHz core keeps HID polling jitter under 1 ms for full-speed devices.
Direkomendasikan
Capacitive Touch User Interface
The PIC18F26K20T-I/SO integrates the CTMU peripheral that simplifies capacitive touch sensing, letting designers add buttons, sliders, and proximity sensors without external ICs. With 25 I/O and PPS, the MCU wakes on a touch event, processes the scan, and returns to nanoWatt sleep, extending battery life on handheld remote controls. The 64KB flash hosts touch libraries and gesture recognition code.
Direkomendasikan
Automotive Body Electronics
The PIC18F26K20T-I/SO is widely deployed in automotive body controllers for seat, mirror, and HVAC flap control with 25 I/O driving relays, PWMs, and LIN slaves via the EUSART. Its industrial -40 to +85°C rating covers cabin environments, and PPS simplifies PCB routing. The 64KB flash holds CAN/LIN stacks plus diagnostics; the wide-body SOIC-28 is repair-friendly in production.
Direkomendasikan
Home Appliance Control Board
The PIC18F26K20T-I/SO drives white-goods main boards like washing machines, dishwashers, and microwave ovens where its 25 I/O drive triac-controlled loads and read user keypads. The 10-bit ADC monitors motor current and temperature sensors while CCP modules generate zero-cross PWMs for heating elements. The 1.8-3.6V VDD lets the design share a single 3.3V rail with HMI logic.
Direkomendasikan
Wireless Sensor Edge Node
The PIC18F26K20T-I/SO anchors wireless sensor edges that talk to sub-GHz radios or BLE modules over SPI/UART. Its nanoWatt XLP sleep below 100 nA and rapid wake via the WDT deliver multi-year coin-cell life, while 64KB flash holds application and OTA bootloader code. The 10-bit ADC digitizes battery voltage and sensor outputs with hardware averaging, simplifying regulatory-compliant IoT designs.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk PIC18F26K20T-I/SO — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | PIC18F26K20-I/SO | PIC18F26K20-I/SP | PIC18F25K20T-I/SO | PIC18F26K22T-I/SO | PIC18F26K40T-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SOIC-28 (Tape & Reel) | SOIC-28 (Tube) | SPDIP-28 | SOIC-28 (Tape & Reel) | SOIC-28 (Tape & Reel) | SOIC-28 (Tape & Reel) |
| Flash Memory | 64 KB | 64 KB | 64 KB | 32 KB | 64 KB | 64 KB |
| RAM | 3968 bytes | 3968 bytes | 3968 bytes | 2048 bytes | 3896 bytes | 3724 bytes |
| Maximum Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Operating Voltage | 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 |
| I/O Pins | 25 | 25 | 25 | 25 | 25 | 25 |
| ADC | 10-bit, 17 ch | 10-bit, 17 ch | 10-bit, 17 ch | 10-bit, 17 ch | 10-bit, 17 ch | 10-bit, 17 ch |
| CTMU (Capacitive Touch) | Yes | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -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 | -40°C to +85°C |
Diferensiator Kunci
- 64KB flash is the largest in the K20 SOIC-28 family (vsPIC18F25K20T-I/SO)
- nanoWatt XLP sleep under 100 nA with full peripheral retention (vsPIC18F26K22T-I/SO)
- CTMU peripheral for hardware capacitive touch without external IC (vsPIC18F26K40T-I/SO)
- Industrial -40 to +85°C with nanoWatt sleep plus 1KB EEPROM (vsPIC18F26K20T-I/SS)
Catatan Desain
Decouple VDD (pin 20) with a 0.1 µF ceramic capacitor placed within 5 mm of the pin and tied to VSS (pin 19). For designs using the internal 16 MHz HFINTOSC plus PLL, add a bulk 10 µF X7R capacitor near the package. The PIC18F26K20T-I/SO draws below 100 nA in Sleep mode when the WDT and ADC are disabled, enabling multi-year battery life on a single 3 V coin cell - see Section 10 (DC Characteristics) of the datasheet.
Keep traces to the crystal on RA6/OSC2 and RA7/OSC1 short and surround them with a ground guard ring; avoid routing signal lines under the crystal. Route MCLR through a 10 kΩ pull-up to VDD, and place the ICSP connector on the board edge so a PICkit 5 can program and debug without removing the device. The SOIC-28 wide-body package is hand-solderable with a fine tip iron.
Do not exceed 4V on VDD or apply 5V signals to the I/O pins without a level translator - the PIC18F26K20T-I/SO is a 3.3V part and 5V tolerance is not guaranteed. When using Peripheral Pin Select, unlock PPS once at startup before changing remapping registers, otherwise writes are silently ignored. AVDD and AVSS must be tied to VDD/VSS when the ADC is unused, or floating references can drift.
For applications that use the ADC, place the analog traces (AN0-AN11, VREF+, VREF-) away from digital switching signals to avoid noise injection. According to the Microchip datasheet, achieve best ADC accuracy by placing a 100 nF bypass capacitor on AVDD and using a small RC filter (10Ω + 100nF) on VREF+ for noisy environments. Keep the analog ground island tied to digital ground at one point only.
Informasi Konformitas
RoHS and REACH compliance per Microchip product page. The PIC18F26K20T-I/SO is industrial grade (-40 to +85°C) and is not AEC-Q100 qualified; automotive applications should select PIC18F26K20-E/SO or higher-grade automotive variants per the datasheet.
