PIC18F26K22-I/SS - 8-Bit 64MHz 64KB Flash MCU | Microchip
料号： PIC18F26K22-I/SS ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.62 | $3.62 |
| 10 | $3.2 | $32.00 |
| 100 | $2.78 | $278.00 |
| 500 | $2.45 | $1,225.00 |
| 1,000 | $2.15 | $2,150.00 |
PIC18F26K22-I/SS 概述
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, volatile data RAM, and peripherals onto one silicon die. PIC microcontrollers use a Harvard RISC architecture with separate program and data buses, which allows simultaneous fetch and access. PIC18F series parts add enhanced peripherals and richer instruction sets compared to baseline PIC16 parts, while remaining 8-bit cores. Within the broader taxonomy, PIC18F MCUs sit below 16-bit and 32-bit MCUs but offer compelling cost-per-I/O, ultra-low idle power, and deterministic interrupt response for control applications.
Key features of the PIC18F26K22-I/SS include nanoWatt XLP technology for sub-uA sleep currents, multiple power-managed modes (Run/Idle/Sleep), and rich analog/digital peripherals. The part integrates 25 I/O pins, multiple 8-bit and 16-bit timers, enhanced PWM modules suitable for motor control, a 10-bit ADC with up to 19 channels, comparators, and EUSART, MSSP (I2C/SPI), and USB support depending on the variant. Code protection, an ICD/ICSP debug interface, and extended temperature grades (-40C to +125C industrial) round out the offering.
Technically, the K22 family leverages a 16-bit instruction word executed in a 2-cycle pipeline, yielding effective throughput of up to 16 MIPS at 64 MHz. The nanoWatt XLP peripheral set includes low-power Timer1, watchdog, and RTCC, plus ultra-low-power wake sources such as INT, IOC, and ULPWU. Brown-out Reset (BOR), Power-on Reset (POR), and a configurable Windowed Watchdog Timer (WWDT) are standard. Memory endurance is rated at 100K erase/write cycles for Flash and 1M for EEPROM.
Typical applications include low-power sensor nodes, battery-powered instruments, motor and lighting control, USB device interfaces, and home appliances. Its combination of low idle current and rich peripherals makes it attractive for wearables, industrial sensors, and remote-control products where every milliwatt matters.
When designing with this part, pay attention to decoupling (place 100 nF close to each VDD pin and use a bulk 10 uF on the board), in-circuit serial programming (ICSP) pin assignment for field updates, and utilization of the nanoWatt XLP Sleep/Doze modes rather than busy-wait loops to maximize battery life. Plan oscillator start-up timer (OST) delays when switching clock sources.
This page synthesizes distributor pricing, drop-in same-package alternatives across the PIC18F family, and practical design notes not found in the manufacturer datasheet alone.
直接替换替代料： PIC18F26K22-I/SS ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC18F26K22-I/SS （相同外形与封装尺寸） ——差异在于 ADC, Package, Timers, Program Memory (Flash), Operating Temperature.
快速对比工具——选择替代料号进行并排对比：
PIC18F26K22-I/SO
✅ 直接替换✓ 有现货
$2.62 / 个
查看数据手册 →PIC18F26K22-I/SP
✅ 直接替换✓ 有现货
$2.55 / 个
查看数据手册 →PIC18F25K22-I/SS
✅ 直接替换✓ 有现货
$1.92 / 个
查看数据手册 →PIC18F24K22-I/SS
✅ 直接替换✓ 有现货
$1.32 / 个
查看数据手册 →PIC18F27K40-I/SS
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.99 / 个
查看数据手册 →PIC18F26Q43-I/SS
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.38 / 个
查看数据手册 →PIC18F26K22-I/SS 最大额定值与电气特性
| Family | PIC18F K22 (XLP) |
| Core | PIC 8-bit RISC Harvard |
| Maximum CPU Clock | 64 MHz |
| Program Memory (Flash) | 64 KB (32K x 16 words) |
| Data SRAM | 3.8 KB (3896 bytes) |
| EEPROM | 1 KB |
| I/O Pins | 25 |
| Supply Voltage (VDD) | 1.8 V to 5.5 V (PIC18F26K22 industrial operating range: 4.2 V to 5.5 V at 64 MHz per DigiKey listing; extended range 1.8 V to 3.6 V at lower FOSC) |
| ADC | 10-bit, up to 19 channels |
| Comparators | 2 |
| Timers | 8-/16-bit, multiple instances |
| PWM Modules | Enhanced CCP + PWM, motor-control capable |
| Communication | EUSART, MSSP (I2C/SPI), USB (FS) |
| 封装 | 28-pin SSOP (5.30 mm body) |
| 工作温度 | -40C to +85C (industrial, -I suffix) |
| nanoWatt XLP Sleep Current | Sub-microamp range (per family) |
| RoHS 状态 | Compliant |
PIC18F26K22-I/SS 引脚配置
| 引脚 1 | MCLR/RE3 — Master Clear (Reset) input / digital I/O RE3 |
| 引脚 2 | RA0 — PORTA bit 0 / AN0 |
| 引脚 3 | RA1 — PORTA bit 1 / AN1 |
| 引脚 4 | RA2 — PORTA bit 2 / AN2 / VREF- |
| 引脚 5 | RA3 — PORTA bit 3 / AN3 / VREF+ |
| 引脚 6 | RA4 — PORTA bit 4 / AN4 / T0CKI |
| 引脚 7 | RA5 — PORTA bit 5 / AN5 / SS1 |
| 引脚 8 | VSS — Ground reference |
| 引脚 9 | RA7 — PORTA bit 7 / OSC1 / CLKIN |
| 引脚 10 | RA6 — PORTA bit 6 / OSC2 / CLKOUT |
| 引脚 11 | RC0 — PORTC bit 0 / AN16 |
| 引脚 12 | RC1 — PORTC bit 1 / AN17 |
| 引脚 13 | RC2 — PORTC bit 2 / AN18 |
| 引脚 14 | RC3 — PORTC bit 3 / SCL1 / SCK1 |
| 引脚 15 | RC4 — PORTC bit 4 / SDA1 / SDI1 |
| 引脚 16 | RC5 — PORTC bit 5 / SDO1 |
| 引脚 17 | RC6 — PORTC bit 6 / TX1 / CK1 |
| 引脚 18 | RC7 — PORTC bit 7 / RX1 / DT1 |
| 引脚 19 | VSS — Ground reference |
| 引脚 20 | VDD — Positive supply voltage |
| 引脚 21 | RB0 — PORTB bit 0 / AN12 / INT0 / FLT0 |
| 引脚 22 | RB1 — PORTB bit 1 / AN10 / INT1 |
| 引脚 23 | RB2 — PORTB bit 2 / AN8 / INT2 |
| 引脚 24 | RB3 — PORTB bit 3 / AN9 / INT3 / CCP2 |
| 引脚 25 | RB4 — PORTB bit 4 / AN11 / KBI0 |
| 引脚 26 | RB5 — PORTB bit 5 / KBI1 / CCP3 |
| 引脚 27 | RB6 — PORTB bit 6 / PGC / KBI2 |
| 引脚 28 | RB7 — PORTB bit 7 / PGD / KBI3 |
典型应用
PIC18F26K22-I/SS 适用于 7 应用s: Battery-Powered Sensor Node, USB HID / CDC Device, Small BLDC / PMSM Motor Controller, Home Appliance Control Board, Industrial Sensor / Transmitter, LED Lighting Controller, HMI Front Panel / Display Controller.
Battery-Powered Sensor Node
The PIC18F26K22-I/SS's nanoWatt XLP technology delivers sub-microamp Sleep current and flexible wake sources (IOC, RTCC, INT, ULPWU) that are critical for coin-cell or Li-ion powered sensor nodes. The 10-bit ADC with up to 19 input channels supports multi-sensor front-ends, while the 64 KB Flash accommodates Zigbee/BLE stack or LoRaWAN firmware plus application logic. At 64 MHz the K22 delivers 16 MIPS to run protocol processing between long low-power sleeps, and the SSOP-28 footprint keeps the BOM compact for wearables, environmental loggers, and wireless HVAC sensors where every microamp of idle current matters.
推荐
USB HID / CDC Device
On -K28/-K22 variants with USB, the PIC18F26K22-I/SS integrates a USB Full-Speed device controller that requires no external PHY, enabling USB HID, CDC, or vendor-class devices with minimal BOM. The 64 MHz core and 3.8 KB SRAM are ample for typical USB stacks plus application code, while the internal 48 MHz PLL removes an external crystal for USB operation. For USB-C designs, the SSOP-28 footprint leaves enough pins for the D+/D- pair plus VBUS sense and 26 general-purpose signals for buttons, LEDs, or a small display, all in a single-chip solution costing well under USD 4 at qty 100.
推荐
Small BLDC / PMSM Motor Controller
The PIC18F26K22's enhanced PWM modules, 10-bit ADC with 19 channels, and configurable logic cell (CLC) make it a strong fit for sensorless or Hall-sensor BLDC / PMSM commutation. The 25 I/O pins are sufficient to drive a three-phase gate driver (e.g., three PWM pairs, brake, fault, enable) while still sampling back-EMF, current sense, and thermistor inputs. nanoWatt XLP Sleep allows standby current below 1 uA when the motor is idle, and 16 MIPS of throughput at 64 MHz is plenty for FOC or trapezoidal commutation in small fans, pumps, and appliances.
推荐
Home Appliance Control Board
With 25 I/O, 8-bit timers, capture/compare, and a 10-bit ADC, the PIC18F26K22-I/SS is a natural fit for white-goods control boards in washing machines, dishwashers, and refrigerators. The SSOP-28 footprint is compact for tight enclosure designs, while the industrial -40C to +85C temperature range handles appliance environments. Code protection, BOR, and windowed WDT provide robustness against brown-out and firmware-corrupt scenarios common in motor-driven appliances. The PIC18 ecosystem's mature toolchain and longevity commitment keep appliance designs in production for decades.
推荐
Industrial Sensor / Transmitter
The PIC18F26K22-I/SS's industrial -40C to +85C rating, robust peripherals, and nanoWatt XLP low-power features make it ideal for 4-20 mA loop-powered transmitters, RTU modules, and HART-like sensor interfaces. The MSSP peripheral handles SPI or I2C sensor front-ends, while the EUSART supports RS-485 or RS-232 comms. The 10-bit ADC with 19 channels covers multiple sensor inputs with adequate resolution for process variables, and the 64 KB Flash supports calibration tables and linearization firmware. The SSOP-28 package fits inside compact DIN-rail enclosures.
推荐
LED Lighting Controller
For RGBW LED drivers, architectural lighting, and horticulture fixtures, the PIC18F26K22-I/SS provides enough PWM channels for multi-channel color mixing with smooth 16-bit resolution. The 64 MHz core handles DMX512, DALI, or 0-10V dimming protocols in software while maintaining tight PWM update rates. Internal EEPROM stores calibration and color presets, while the EUSART supports DMX / DALI physical layers. nanoWatt XLP Sleep keeps standby power below energy-efficiency requirements for connected lighting products.
推荐
HMI Front Panel / Display Controller
The PIC18F26K22-I/SS's 64 KB Flash and 25 I/O can drive character LCDs, small graphic OLEDs, and scan matrix keypads while still handling serial backhaul to a host processor. The MSSP supports SPI displays at high update rates, and the enhanced PWM handles backlight brightness control. Code protection and the K22's mature silicon prevent IP theft in commercial products, while the SSOP-28 footprint fits behind small front-panel cutouts. For larger displays, the PIC18F46K22 in TQFP-44 is a pin-compatible family migration option.
推荐
推荐产品汇总
工程参考数据： PIC18F26K22-I/SS ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC18F26K22-I/SO | PIC18F26K22-I/SP | PIC18F25K22-I/SS | PIC18F24K22-I/SS | PIC18F27K40-I/SS | PIC18F26Q43-I/SS |
|---|---|---|---|---|---|---|---|
| Package | 28-SSOP (5.30 mm body) | 28-SOIC (different footprint) | 28-PDIP (different footprint) | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | PIC 8-bit (PIC18F K22) | PIC 8-bit (K22) | PIC 8-bit (K22) | PIC 8-bit (K22) | PIC 8-bit (K22) | PIC 8-bit (K40) | PIC 8-bit (Q43) |
| Max CPU Clock | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Flash Program Memory | 64 KB | 64 KB | 64 KB | 32 KB (-50%) | 16 KB (-75%) | 128 KB (+100%) | 64 KB (same) |
| SRAM | 3.8 KB | 3.8 KB | 3.8 KB | 2 KB (-47%) | 1.5 KB (-60%) | 4 KB (+5%) | 8 KB (+110%) |
| I/O Pins | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| ADC | 10-bit, 19 ch | 10-bit, 19 ch | 10-bit, 19 ch | 10-bit, 19 ch | 10-bit, 19 ch | 12-bit, 24 ch (improved) | 12-bit, 24 ch (improved) |
关键差异点
- nanoWatt XLP Sleep current below 1 uA （对比 ATmega328P-AU)
- Integrated USB Full-Speed peripheral on K22 USB variant （对比 PIC18F25K22-I/SS)
- Larger Flash on same SSOP-28 footprint （对比 PIC18F24K22-I/SS)
- Mature K22 ecosystem with 64 MHz and 10-bit ADC （对比 PIC18F27K40-I/SS (newer K40))
设计说明
Place a 100 nF ceramic decoupling capacitor as close as physically possible to each VDD/AVDD pin (pins 20 and 19 of the SSOP-28). Add a bulk 10 uF tantalum or ceramic near the MCU and a ferrite bead if the analog and digital rails are shared. For nanoWatt XLP designs, ensure the regulator chosen (e.g., MCP1700) has a quiescent current below 1.6 uA to preserve sleep-current budget.
Configuration bits must be set correctly during programming; an unconfigured MCLRE can prevent debug access. The ICSP pins (RB6/PGD and RB7/PGC) should be reserved for in-circuit serial programming even if not used during normal operation. Do not leave the MCLR pin floating - tie it to VDD through a 10 kohm resistor to ensure proper reset behaviour.
Keep traces to OSC1/OSC2 (pins 9/10) short and symmetric if using a crystal. Place the load capacitors (typically 15-33 pF) within 5 mm of the MCU. Avoid routing high-frequency signals (PWM, USB) directly under the crystal traces. Provide a solid ground plane under the SSOP-28 footprint with stitching vias around the perimeter for thermal and EMI performance.
When using USB Full-Speed, the D+/D- traces must be 90 ohm differential, length-matched within 150 mil, and routed over a continuous ground plane. Place the USB series resistors (typically 22 ohm or 33 ohm) close to the MCU pins. Use a USBLC6-2SC6 ESD array at the connector to protect the D+/D- pins from ESD strikes.
合规信息
RoHS and REACH compliant per Microchip product page. Industrial temperature grade -40C to +85C (-I suffix); AEC-Q100 not qualified - use PIC18FxxK22 automotive AEC-Q100 qualified parts for automotive designs.
