PIC18F46K22-I/ML - 64KB Flash 8-bit MCU 44-QFN | Microchip
MPN: PIC18F46K22-I/ML ✓ نشطPIC18F46K22-I/ML نظرة عامة
An 8-bit microcontroller (MCU) is a programmable processor core built around an 8-bit data path that integrates Flash program memory, SRAM, EEPROM, peripherals, and interrupt logic into a single chip. PIC18F devices use a Harvard RISC architecture with a 16-bit instruction word, giving them deterministic interrupt latency and strong code density for embedded C and assembly projects. They sit within the broader hierarchy of microcontrollers -> microcontrollers -> microcontrollers -> MCUs -> semiconductors, and bridge low-power peripherals with real-time control.
Key features include 16 MIPS throughput at 64 MHz, 1 KB of EEPROM, nanoWatt XLP sleep current typically below 100 nA, two rail-to-rail analog comparators with programmable on-chip voltage reference, up to 28 channels of mTouch capacitive touch sensing, two USART, two MSSP (SPI/I2C), and a 12-bit ADC with up to 28 channels. The charge-time measurement unit (CTMU) supports capacitive and ratiometric measurements, while the peripheral pin select (PPS) provides flexible signal routing.
Architecturally, the PIC18F46K22 uses an enhanced Harvard core with hardware multiply, a 31-level stack, and self-programmable Flash that allows bootloaders and on-the-fly firmware updates. The -I suffix indicates the industrial -40°C to +85°C temperature grade, and /ML denotes the 8x8 mm QFN-44 EP package with better thermal dissipation than a TQFP of the same die.
Typical applications include automotive body controllers, HVAC control panels, white-goods and appliance interfaces, low-power sensor nodes, capacitive touch user interfaces, and industrial control modules where 5V tolerance and EMI robustness matter. The wide operating voltage makes it tolerant of 3.3V and legacy 5V rails.
When designing with the PIC18F46K22-I/ML, ground the exposed pad (EP) to a continuous copper pour to meet the 31.6 C/W thermal resistance; leave at least 0.5 mm clearance on outer rows for solder wicking. Decouple VDD/VSS pairs with 100 nF X7R ceramics as close as possible to each pin pair. For migration planning, evaluate the PIC18F46Q10 family as Microchip's recommended modern successor.
بدائل مباشرة لـ PIC18F46K22-I/ML — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع PIC18F46K22-I/ML (نفس عامل الشكل والبصمة) — يختلف في Package, Program Memory (Flash), Timers, ADC, Core Architecture.
PIC18F46K22-I/PT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18F45K22-I/ML
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18F44K22-I/ML
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18F46K22-E/ML
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منهاتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18F46K20-I/ML
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18F46K22T-I/ML
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
PIC18F46K22-I/ML الحدود القصوى والخصائص الكهربائية
| Family | PIC18F XLP |
| Core Architecture | 8-bit PIC RISC |
| Program Memory (Flash) | 64 KB |
| RAM | 3968 B |
| EEPROM | 1024 B |
| Maximum CPU Frequency | 64 MHz |
| Performance (MIPS) | 16 MIPS |
| جهد التغذية | 2.5 V to 5.5 V |
| درجة حرارة التشغيل | -40 C to +85 C (industrial) |
| ADC | 12-bit, up to 28 channels |
| Comparators | 2 rail-to-rail analog |
| Timers | 8-bit and 16-bit, multiple modules |
| Communication | 2x USART, 2x MSSP (SPI/I2C) |
| Capacitive Touch Channels | Up to 28 (mTouch) |
| العلبة | QFN-44 EP (ML) 8x8 mm |
| عدد الأطراف | 44 |
| نوع التركيب | Surface Mount |
| حالة RoHS | Compliant |
| Automotive Qualification | AEC-Q100 qualified |
| Low-Power Technology | nanoWatt XLP |
تكوين أطراف PIC18F46K22-I/ML
| دبوس 1 | RE3/MCLR — Master Clear (reset) input or digital I/O RE3 |
| دبوس 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| دبوس 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| دبوس 4 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| دبوس 5 | RA3/AN3 — PORTA bit 3 / analog input 3 |
| دبوس 6 | RA4/AN4 — PORTA bit 4 / analog input 4 |
| دبوس 7 | RA5/AN5 — PORTA bit 5 / analog input 5 |
| دبوس 8 | RA6 — PORTA bit 6 |
| دبوس 9 | RA7 — PORTA bit 7 |
| دبوس 10 | VSS — Ground reference |
| دبوس 11 | VDD — Positive supply voltage |
| دبوس 12 | RB0/AN12 — PORTB bit 0 / analog input 12 |
| دبوس 13 | RB1/AN10 — PORTB bit 1 / analog input 10 |
| دبوس 14 | RB2/AN8 — PORTB bit 2 / analog input 8 |
| دبوس 15 | RB3/AN9 — PORTB bit 3 / analog input 9 |
| دبوس 16 | RB4/AN11 — PORTB bit 4 / analog input 11 |
| دبوس 17 | RB5/AN13 — PORTB bit 5 / analog input 13 |
| دبوس 18 | RB6/PGC — PORTB bit 6 / ICSP clock |
| دبوس 19 | RB7/PGD — PORTB bit 7 / ICSP data |
| دبوس 20 | VSS — Ground reference |
| دبوس 21 | VDD — Positive supply voltage |
| دبوس 22 | RC0/SOSCO — PORTC bit 0 / secondary oscillator output |
| دبوس 23 | RC1/SOSCI — PORTC bit 1 / secondary oscillator input |
| دبوس 24 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| دبوس 25 | RC3/SCL — PORTC bit 3 / I2C clock |
| دبوس 26 | RC4/SDA — PORTC bit 4 / I2C data |
| دبوس 27 | RC5/SDO — PORTC bit 5 / SPI data out |
| دبوس 28 | RC6/TX/CK — PORTC bit 6 / USART TX or clock |
| دبوس 29 | RC7/RX/DT — PORTC bit 7 / USART RX or data |
| دبوس 30 | VSS — Ground reference |
| دبوس 31 | VDD — Positive supply voltage |
| دبوس 32 | RD0 — PORTD bit 0 |
| دبوس 33 | RD1 — PORTD bit 1 |
| دبوس 34 | RD2 — PORTD bit 2 |
| دبوس 35 | RD3 — PORTD bit 3 |
| دبوس 36 | RD4 — PORTD bit 4 |
| دبوس 37 | RD5 — PORTD bit 5 |
| دبوس 38 | RD6 — PORTD bit 6 |
| دبوس 39 | RD7 — PORTD bit 7 |
| دبوس 40 | VSS — Ground reference |
| دبوس 41 | VDD — Positive supply voltage |
| دبوس 42 | RE0/AN5 — PORTE bit 0 / analog input 5 |
| دبوس 43 | RE1/AN6 — PORTE bit 1 / analog input 6 |
| دبوس 44 | RE2/AN7 — PORTE bit 2 / analog input 7 |
| دبوس 45 | EP — Exposed thermal pad - connect to VSS |
التطبيقات النموذجية
PIC18F46K22-I/ML مناسب لـ 6 التطبيقs: Automotive Body Control Module, Capacitive Touch User Interface, Industrial HVAC Control Panel, Battery-Powered Sensor Node, White Goods Motor Controller, Medical Device User Interface.
Automotive Body Control Module
The PIC18F46K22-I/ML is well-suited for automotive body ECUs because it is AEC-Q100 qualified, supports 2.5V–5.5V rails from the vehicle 12V pre-regulated bus, and integrates two rail-to-rail comparators for switch debouncing. With 64 KB Flash and 3968 B RAM, it can host CAN-style communication stacks via the two MSSP peripherals and 16 MIPS performance enables real-time lighting and seat-control response. Its nanoWatt XLP sleep below 100 nA is critical for parked-current battery compliance.
موصى به
Capacitive Touch User Interface
The mTouch and CTMU peripherals in the PIC18F46K22-I/ML enable up to 28 capacitive touch channels without an external touch IC. This makes the part a strong fit for white-goods, kitchen appliance, and consumer touch panels where BOM cost matters. The 12-bit ADC, 16 MIPS throughput, and 64 KB Flash accommodate modern GUI state machines with on-the-fly firmware updates through self-programmable Flash.
موصى به
Industrial HVAC Control Panel
The PIC18F46K22-I/ML fits HVAC control panels because it integrates dual analog comparators, multiple PWM modules, and the PIC18 real-time control architecture. Industrial 24V pre-regulated rails step down to 5V, where the part's 2.5V–5.5V tolerance handles transients. nanoWatt XLP lets the panel enter sub-uA standby between user interactions while still waking instantly via mTouch or comparator interrupts.
موصى به
Battery-Powered Sensor Node
The nanoWatt XLP technology gives the PIC18F46K22-I/ML a measured sleep current below 100 nA, while the RTC and periodic wake from Timer1 let it run for years on a 3V lithium cell. The 12-bit ADC with internal voltage reference, plus CTMU, supports ratiometric temperature and gas sensing. Two USART and two MSSP interfaces cover LoRa, BLE, or Wi-Fi module links for a sub-$5 sensor node.
موصى به
White Goods Motor Controller
The PIC18F46K22-I/ML can drive small brushed DC or stepper motor control loops directly with its PWM, ECCP, and 12-bit ADC in washing machines, dishwashers, and refrigerators. The 16 MIPS throughput is enough for sensorless back-EMF commutation, while the QFN-44 EP package dissipates controller heat across the exposed pad. AEC-Q100 qualification also meets refrigerator compressor inverter qualification requirements.
موصى به
Medical Device User Interface
For portable medical devices such as blood-pressure monitors, glucose meters, and pulse oximeters, the PIC18F46K22-I/ML provides the deterministic PIC18 interrupt latency needed for safety-critical measurement sequencing. The 12-bit ADC with internal 1.024V reference captures sensor data with <1 LSB linearity, while the 64 KB Flash supports IEC 62304 firmware audits. Low power extends battery life during standby.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ PIC18F46K22-I/ML — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | PIC18F46K22-I/PT | PIC18F45K22-I/ML | PIC18F44K22-I/ML | PIC18F46K22-E/ML | PIC18F46K20-I/ML |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | QFN-44 EP (ML) 8x8 mm | TQFP-44 (PT) 10x10 mm | QFN-44 EP (ML) 8x8 mm - same | QFN-44 EP (ML) 8x8 mm - same | QFN-44 EP (ML) 8x8 mm - same | QFN-44 EP (ML) 8x8 mm - same |
| Flash Memory | 64 KB | 64 KB | 32 KB (-50%) | 16 KB (-75%) | 64 KB | 32 KB (-50%) |
| RAM | 3968 B | 3968 B | 1536 B (-61%) | 768 B (-81%) | 3968 B | 1536 B (-61%) |
| CPU Frequency | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) |
| 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 +125 C (extended) | -40 C to +85 C |
| AEC-Q100 | Qualified (Grade 3) | Qualified (Grade 3) | Qualified (Grade 3) | Qualified (Grade 3) | Qualified (Grade 1) | Qualified (Grade 3) |
أبرز الفروقات
- Same silicon in QFN-44 package (مقابلPIC18F46K22-I/PT)
- Doubled Flash and RAM over the K20 predecessor (مقابلPIC18F46K20-I/ML)
- Highest memory tier in K22 family (مقابلPIC18F45K22-I/ML)
ملاحظات التصميم
Solder the QFN-44 EP exposed pad to a continuous copper pour using at least 4 thermal vias (0.3 mm drill, 0.6 mm pad) to a bottom-plane ground pour. This brings the thermal resistance to ~31.6 C/W as specified by Microchip datasheet DS41476. Without proper EP soldering, the part can overheat in continuous 64 MHz operation at high ambient temperatures.
Place a 100 nF X7R decoupling capacitor within 3 mm of every VDD pin pair (4 pairs total in QFN-44) and a single 10 uF bulk tantalum or ceramic on the main supply rail. The internal voltage regulator requires this bulk capacitance to handle nanoWatt XLP mode transitions when waking from sub-uA sleep to active 16 MIPS operation.
Configuration fuses (CONFIG words) control WDT, code-protect, oscillator, and low-voltage-programming settings; an unprogrammed device defaults to safe slow RC mode. Always set CONFIG1L for proper FOSC selection - leaving the default blocks PLL and prevents 64 MHz operation. Program CONFIG7L CONFIG7H for read protection only after firmware is fully verified.
Route the ICSP pins (RB6/PGC, RB7/PGD) to a 6-pin 0.1 inch header on the PCB edge for in-circuit programming and debug. Keep the trace length under 50 mm and use a 4.7 kohm pull-up on MCLR to VDD to avoid spurious resets in electrically noisy environments like motor drive stages.
معلومات الامتثال
AEC-Q100 Grade 3 qualified per datasheet DS41476 and Microchip product page. RoHS and lead-free confirmed via distributor stock listings.
