PIC18F24K22T-I/ML - 16KB Flash 8-bit MCU QFN-28 | Microchip
부품 번호: PIC18F24K22T-I/ML ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $3.2 | $3.20 |
| 10 | $2.88 | $28.80 |
| 100 | $2.55 | $255.00 |
| 500 | $2.3 | $1,150.00 |
| 1,000 | $2.1 | $2,100.00 |
PIC18F24K22T-I/ML 개요
An 8-bit microcontroller is a single-chip computer based on a RISC CPU with 8-bit data width, integrating Flash program memory, SRAM, EEPROM, timers, communication peripherals, and interrupt control on one silicon die. PIC18 microcontrollers sit at the middle of the 8-bit MCU hierarchy (under PIC10/12/16 base, above PIC24), extending the architecture with C-optimized instruction set, hardware multiply, and large peripheral sets. The PIC18 K22 sub-family layers nanoWatt XLP power management on top, targeting battery-powered and energy-harvesting designs. With its 16KB Flash / 768-byte RAM combination, the PIC18F24K22 occupies the low-density end of the family but retains the full peripheral complement of larger siblings.
Key features include 25 digital I/O pins, an integrated programmable 32 kHz to 16 MHz internal RC oscillator, two rail-to-rail analog comparators, a 10-bit ADC with up to 19 channels, and four timers including RTCC with calendar mode. The 28-QFN (6x6) package provides compact QFN-family footprint with a thermal pad for heat dissipation. Memory protection is offered via program code protection and a hardware WDT for reliable unattended operation.
The architecture is built around a RISC core with 200 ns instruction execution and a 16-level hardware stack, enabling deterministic real-time response. nanoWatt XLP supports deep sleep currents in the nanoamp range, making the device suitable for IEC 60601 battery-backed medical sensors and remote sensor nodes. The integrated charge time measurement unit (CTMU) supports capacitive touch, button, slider, and liquid-level interfaces without external components.
Typical applications include industrial IoT sensor nodes, home automation appliances, automotive interior modules, low-power medical devices, USB HID peripherals, and consumer electronics. The wide 1.8 V to 5.5 V operating range (matched to lithium chemistries) and an extended temperature grade further extend the use case envelope.
When designing with this device, ensure the QFN thermal pad is soldered to a sufficiently sized copper pour to keep junction temperature within limits and follow Microchip MPLAB X IDE for firmware development. The CTMU peripheral calibration constants are stored in Flash and should be locked to preserve touch-tuning accuracy across production runs.
This page synthesizes distributor pricing and stock data, drop-in alternatives drawn from the same QFN-28 PIC18 family, and design guidance not consolidated in the manufacturer datasheet.
드롭인 대체품: PIC18F24K22T-I/ML — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: PIC18F24K22T-I/ML (동일 폼 팩터 및 풋프린트) — 차이점: Package, ADC, Core Architecture, Timers, Program Memory (Flash).
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
PIC18F24K22-I/ML
✅ 드롭인✓ 재고 있음
$2.55 / 개
데이터시트 보기 →PIC18F24K22-E/ML
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
PIC18F24K22-I/SO
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
PIC18F24K20T-I/SO
✅ 드롭인 ⚠️ 사양 미검증✓ 재고 있음
$2.95 / 개
데이터시트 보기 →PIC18F25K22-I/ML
✅ 드롭인 ⚠️ 사양 미검증✓ 재고 있음
$2.74 / 개
데이터시트 보기 →PIC18F24J50-I/SO
✅ 드롭인 ⚠️ 사양 미검증✓ 재고 있음
$2.78 / 개
데이터시트 보기 →PIC18F24K22T-I/ML 최대 정격 & 전기적 특성
| Core | PIC18 8-bit RISC |
| Program Memory (Flash) | 16 KB |
| Data RAM | 768 bytes |
| Data EEPROM | 256 bytes |
| CPU Speed | up to 64 MHz (16 MIPS) |
| 공급 전압 | 1.8 V to 5.5 V |
| I/O Pins | 25 |
| ADC | 10-bit, up to 19 channels |
| Comparators | 2 (rail-to-rail) |
| Timers | 4 (Timer0/1/2/3) + RTCC |
| Communication | 2x EUSART, 2x MSSP (SPI/I2C) |
| Touch Hardware | CTMU for mTouch capacitive sensing |
| Low-Power Tech | nanoWatt XLP |
| 패키지 | 28-QFN (6x6) - ML |
| 동작 온도 | -40 C to +85 C (Industrial) |
| 실장 유형 | Surface Mount |
| MSL 레벨 | 3 (per JEDEC J-STD-020) |
| RoHS 상태 | Compliant |
PIC18F24K22T-I/ML 핀 구성
| 핀 1 | RA7/AN7 — Digital I/O / Analog input channel 7 |
| 핀 2 | RA6/AN6 — Digital I/O / Analog input channel 6 |
| 핀 3 | RA5/AN5 — Digital I/O / Analog input channel 5 |
| 핀 4 | RA4/AN4 — Digital I/O / Analog input channel 4 |
| 핀 5 | RA3/AN3 — Digital I/O / Analog input channel 3 |
| 핀 6 | RA2/AN2 — Digital I/O / Analog input channel 2 |
| 핀 7 | RA1/AN1 — Digital I/O / Analog input channel 1 |
| 핀 8 | RA0/AN0 — Digital I/O / Analog input channel 0 |
| 핀 9 | VSS — Ground reference |
| 핀 10 | VDD — Positive supply voltage |
| 핀 11 | RB7/CTED1 — Digital I/O / CTMU edge 1 (per datasheet) |
| 핀 12 | RB6/CTED2 — Digital I/O / CTMU edge 2 (per datasheet) |
| 핀 13 | RB5/ANB5 — Digital I/O / Analog input B5 |
| 핀 14 | RB4/ANB4 — Digital I/O / Analog input B4 |
| 핀 15 | RB3/ANB3 — Digital I/O / Analog input B3 |
| 핀 16 | RB2/ANB2 — Digital I/O / Analog input B2 |
| 핀 17 | RB1/ANB1 — Digital I/O / Analog input B1 |
| 핀 18 | RB0/ANB0 — Digital I/O / Analog input B0 / Interrupt |
| 핀 19 | VDD — Positive supply voltage (redundant) |
| 핀 20 | VSS — Ground reference (redundant) |
| 핀 21 | RC7/RX/DT — Digital I/O / EUSART1 RX |
| 핀 22 | RC6/TX/CK — Digital I/O / EUSART1 TX |
| 핀 23 | RC5/SDO — Digital I/O / SPI data out |
| 핀 24 | RC4/SDI/SDA — Digital I/O / SPI data in / I2C data |
| 핀 25 | RC3/SCL — Digital I/O / I2C clock |
| 핀 26 | RC2/CCP1 — Digital I/O / Capture/Compare PWM 1 |
| 핀 27 | RC1/CCP2 — Digital I/O / Capture/Compare PWM 2 |
| 핀 28 | RC0/INT — Digital I/O / External interrupt |
일반적인 애플리케이션
PIC18F24K22T-I/ML 적합 용도: 6 애플리케이션s: Industrial IoT Sensor Nodes, Home Automation Appliances, Automotive Interior Modules, Low-Power Medical Devices, USB HID Peripherals (VIA PIC18F24J50 Path), Consumer Electronics.
Industrial IoT Sensor Nodes
The PIC18F24K22T-I/ML fits industrial IoT sensor nodes due to its nanoWatt XLP technology (35 nA Sleep with RTCC) and 1.8 V to 5.5 V supply range, which permits direct connection to two-AA cells, lithium primaries, or energy harvesters. The CTMU peripheral enables capacitive touch, soil-moisture, or liquid-level sensing via mTouch without external components, while 25 digital I/O lines drive sensor channels and QSPI-attached radios. Placed between the battery and a LoRa or Sub-GHz transceiver, the part serves as a wake-up controller that sleeps between transmissions. The 28-QFN (6x6) footprint reduces PCB area for wireless sensor tags deployed in hard-to-reach locations.
추천
Home Automation Appliances
The PIC18F24K22T-I/ML powers home automation appliances such as smart thermostats, dimmers, and connected lighting controls, where compact footprint and integrated peripherals reduce BOM cost. The device's 10-bit ADC with up to 19 channels samples NTC thermistors, mains-line voltage dividers, and zero-cross detectors without external signal conditioning. Two MSSP channels support I2C-attached keypad controllers and SPI displays, while EUSART links to WiFi or BLE modules. Industrial -40 C to +85 C temperature handling covers attic and basement installations; tape-and-reel packaging supports high-volume SMT lines.
추천
Automotive Interior Modules
Inside the vehicle, the PIC18F24K22T-I/ML handles interior lighting controllers, HVAC blend-door actuators, and seat-position switches via LIN or PWM channels. The industrial -40 C to +85 C grade covers cabin installations; for AEC-Q100 engine bay or transmission work, designers should select PIC18F-Q1 family parts. Up to 25 digital I/O lines drive LED drivers and rotary encoders, and the integrated CTMU supports capacitive-touch door-entry buttons and overhead map-light panels. The 28-QFN (6x6) ML package provides a small footprint and an exposed thermal pad for board-level thermal management under heat-soaked instrument panels.
추천
Low-Power Medical Devices
Battery-powered medical devices such as portable pulse oximeters, infrared thermometers, and patient-bed call buttons benefit from the PIC18F24K22T-I/ML's nanoWatt XLP sleep mode, 1.8 V minimum supply, and CTMU precision measurement. The 10-bit ADC digitizes SpO2 photodiode currents, while comparator inputs implement battery and electrode impedance monitoring. The CTMU's calibrated current sources allow touch-key interfaces per IEC 60601 isolation guidelines when paired with optocouplers. Tape-and-reel packaging supports SMT lines producing high-volume disposable medical accessories.
추천
USB HID Peripherals (VIA PIC18F24J50 Path)
For designs that outgrow the K-series but remain pin-compatible, designers migrate firmware from PIC18F24K22T-I/ML to the USB-equipped PIC18F24J50 family on the same 28-SOIC footprint. The migration adds USB 2.0 full-speed OTG, increasing RAM to 3.8 KB while retaining the same peripheral base. The user perceives an external change in the source code only by selecting an alternate peripheral library. The compiled firmware for the K-series runs unchanged on the J-series where memory permits, providing a smooth migration path for USB cable-connected peripherals such as HID remotes and keypads.
추천
Consumer Electronics
Consumer applications such as remote control handsets, kid's toys, and small kitchen appliances leverage the PIC18F24K22T-I/ML's low cost, compact 28-QFN (6x6) form factor, and integrated peripherals. The CTMU provides touch-button replacement for mechanical switches, while the 10-bit ADC reads battery voltage, rotary controls, and thermistor inputs. Peripherals such as MSSP (SPI/I2C) connect to OLEDs and digital potentiometers; EUSART provides factory programming and field diagnostics. nanoWatt XLP supports coin-cell operation in remote-control products, reducing the consumer-replacement frequency of the battery.
추천
추천 제품 요약
엔지니어링 참조 데이터: PIC18F24K22T-I/ML — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | PIC18F24K22-I/ML | PIC18F24K22-E/ML | PIC18F25K22-I/ML |
|---|---|---|---|---|
| Package | 28-QFN (6x6) ML | 28-QFN (6x6) ML - same | 28-QFN (6x6) ML - same | 28-QFN (6x6) ML - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 16 KB | 16 KB | 16 KB | 32 KB |
| Data RAM | 768 B | 768 B | 768 B | 1.5 KB |
| Maximum CPU Clock | 64 MHz (16 MIPS) | 64 MHz | 64 MHz | 64 MHz |
| 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 |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C | -40 C to +85 C |
| ADC Channels | up to 19 (10-bit) | up to 19 | up to 19 | up to 19 |
| USB Support | No | No | No | No |
주요 차별점
- Industrial temperature grade with tape-and-reel factory packaging (vs PIC18F24K22-I/ML (tube format))
- Extended-temperature option on the same QFN footprint (vs PIC18F24K22-E/ML (extended -40C to +125C))
- Doubled Flash and RAM headroom (vs PIC18F25K22T-I/ML)
설계 노트
The 28-QFN package exposes a thermal pad (EP) on the underside that MUST be soldered to a copper ground-pour. Estimated: with QFN theta_JA around 24 C/W on a 1-oz 4-layer 4-square-inch copper pour, the device sustains 250 mA core current draw without overheating. Insufficient copper or missing vias under the EP will inflate junction temperature and trigger brown-out reset under heavy GPIO switching loads. Best practice: connect the EP to a VSS-only ground-pour with a 9-via array beneath the pad per Microchip AN-120 (per JEDEC JESD51 guidelines).
Place 100 nF decoupling capacitors as close as possible to each VDD pin, with a 10 uF bulk capacitor on the main VDD rail. Keep analog traces (AN0-AN4, VREF+) short and digitally quiet, routing them on one PCB layer parallel with a continuous GND plane. For CTMU sensing, route touch electrodes with a guarded ground-fill using 0.2 mm trace spacing; calibrate CTMU constants stored in Flash at production, because PCB parasitic differences shift the touch baseline.
Common PIC18F24K22T-I/ML pitfalls: (1) failing to program CONFIG3L after deasserting MCLRE, which leaves RA5 as RESET rather than GPIO; (2) selecting the wrong pragma config OSC fuse and seeing the part lock up at 64 MHz without crystal capacitors matching CX1/CX2 ESR; (3) using the watchdog timer in Deep Sleep without first clearing WDTPS, causing spurious resets after wake-up events; (4) overlooking the watchdog can be cleared in software only via CLRWDT in the same 60 instruction-cycle window. Review Microchip TB3137 and AN1073 before reaching SOC.
규정 준수 정보
RoHS compliant and lead-free per Microchip product page. Industrial -40C to +85C temperature grade. AEC-Q100 is not required for this part - select PIC18F-Q1 family variants for AEC-Q100 qualified applications.
