PIC18F45K22-I/MV - 8-Bit 64MHz 32KB Flash MCU 40-UQFN | Microchip
MPN: PIC18F45K22-I/MV ✓ פעילPIC18F45K22-I/MV סקירה
A microcontroller (MCU) is a single-chip computer containing a processor core, program memory, working RAM, and configurable peripherals on one die. 8-bit PIC MCUs sit in the broader taxonomy microcontroller -> embedded processor -> semiconductor device, and within Microchip's portfolio they form the PIC18 family aimed at low-power mixed-signal control. The PIC18F45K22 is positioned in the upper end of the nanoWatt XLP family, balancing computational throughput with extreme sleep-mode efficiency for battery-powered designs.
Key differentiating features include XLP sleep currents as low as 100 nA, an integrated 16-level hardware multiplier, an on-chip 32 kHz oscillator for RTCC without external crystals, and a configurable charge time measurement unit (CTMU) that supports capacitive touch sensing and precise time-of-flight measurements. The 12-bit A/D converter supports up to 28 channels at the 40-pin package, enabling direct interface with multi-sensor analog front-ends without external multiplexing.
Architecturally the core uses a 16-bit instruction word with an 8-bit data path and a modified Harvard bus, executing most instructions in a single cycle at 16 MIPS. Wide peripheral integration - including an enhanced PWM with dead-band control, auto-shutdown, and programmable dead time - reduces external component count for motor control and power conversion designs. Code protection via standard PIC configuration bits plus ICSP (In-Circuit Serial Programming) supports secure firmware update in the field.
Typical applications span industrial sensor hubs, automotive body and chassis modules, low-power remote controls, battery chargers, smart metering, capacitive touch keypads, and small home appliances. The wide voltage range and AEC-Q100 grading also suit off-road vehicles and portable medical accessories. Designers frequently pair it with Microchip's MCP1700 LDO for supply regulation and MRF24J40 transceivers for sub-GHz wireless links.
When designing with this part, place the exposed pad (EP) on the UQFN package directly onto a sufficiently large copper pour (at least 25 mm^2 of continuous plane area), and follow the recommended 4-layer stack-up with a solid ground plane beneath the device. Program the BOR (brown-out reset) threshold to match the regulated rail to prevent code corruption during power-down events.
This page synthesizes distributor pricing, pin-compatible drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
חלופות תחליף ישיר עבור PIC18F45K22-I/MV — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם PIC18F45K22-I/MV (אותו גורם צורה וטביעת רגל) — שונים ב Package, Timers, Operating Temperature, ADC, Comparators.
PIC18F45K22-E/MV
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F45K22T-I/MV
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC18F46K22-I/MV
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F45K50-I/MV
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F26K22-I/SO
✅ Drop-In ⚠️ מפרטים לא מאומתיםצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F45K22-I/MV דירוגים מרביים ומאפיינים חשמליים
| Core Architecture | PIC18 8-bit RISC |
| Program Memory (Flash) | 32 KB (16K x 16) |
| SRAM | 1536 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Frequency | 64 MHz (16 MIPS) |
| Supply Voltage Range | 2.5 V / 3.3 V / 5 V (2.3 V to 5.5 V) |
| GPIO | 36 |
| A/D Converter | 12-bit, up to 28 channels |
| Timers | Three 16-bit timers |
| CCP/ECCP Modules | 2 |
| Communication Interfaces | 2x MSSP (SPI/I2C), 2x EUSART (UART) |
| Comparators | 2 analog comparators |
| מארז | 40-pin UQFN (MV) 5x5 mm with EP |
| סוג הרכבה | Surface Mount |
| Operating Temperature (Industrial) | -40C to +85C |
| Automotive Qualification | AEC-Q100 |
| Low-Power Technology | nanoWatt XLP (sleep I ~100 nA) |
| סטטוס RoHS | Compliant |
תצורת פינים של PIC18F45K22-I/MV
| פין 1 | RA2/AN2 — PORTA bit 2 / analog input channel 2 |
| פין 2 | RA3/AN3/VREF+ — PORTA bit 3 / analog input 3 / positive reference |
| פין 3 | RA4/AN4/T0CKI — PORTA bit 4 / analog input 4 / Timer0 clock input |
| פין 4 | RA5/AN5/SS/HLVDIN — PORTA bit 5 / SPI Slave Select / HLVD input |
| פין 5 | RA6/AN6/OSC2 — PORTA bit 6 / analog input 6 / crystal oscillator output |
| פין 6 | RA7/AN7/OSC1 — PORTA bit 7 / analog input 7 / crystal oscillator input |
| פין 7 | VSS — Ground reference |
| פין 8 | VDD — Positive supply voltage (2.5 V / 3.3 V / 5 V) |
| פין 9 | RB0/AN12/INT0 — PORTB bit 0 / analog input 12 / external interrupt 0 |
| פין 10 | RB1/AN10/INT1 — PORTB bit 1 / analog input 10 / external interrupt 1 |
| פין 11 | RB2/AN8/INT2 — PORTB bit 2 / analog input 8 / external interrupt 2 |
| פין 12 | RB3/AN9/INT3 — PORTB bit 3 / analog input 9 / external interrupt 3 |
| פין 13 | RB4/AN11 — PORTB bit 4 / analog input 11 |
| פין 14 | RB5/AN13 — PORTB bit 5 / analog input 13 |
| פין 15 | RB6/ICSPCLK — PORTB bit 6 / ICSP clock |
| פין 16 | RB7/ICSPDAT — PORTB bit 7 / ICSP data |
| פין 17 | RC0/SOSCO — PORTC bit 0 / secondary oscillator output |
| פין 18 | RC1/SOSCI — PORTC bit 1 / secondary oscillator input |
| פין 19 | RC2/AN14 — PORTC bit 2 / analog input 14 |
| פין 20 | RC3/AN15/SCL1 — PORTC bit 3 / analog input 15 / I2C1 clock |
| פין 21 | RC4/AN16/SDA1 — PORTC bit 4 / analog input 16 / I2C1 data |
| פין 22 | RC5/AN17 — PORTC bit 5 / analog input 17 |
| פין 23 | RC6/AN18 — PORTC bit 6 / analog input 18 |
| פין 24 | RC7/AN19 — PORTC bit 7 / analog input 19 |
| פין 25 | RD0/AN20 — PORTD bit 0 / analog input 20 |
| פין 26 | RD1/AN21 — PORTD bit 1 / analog input 21 |
| פין 27 | RD2/AN22 — PORTD bit 2 / analog input 22 |
| פין 28 | RD3/AN23 — PORTD bit 3 / analog input 23 |
| פין 29 | RD4/AN24 — PORTD bit 4 / analog input 24 |
| פין 30 | RD5/AN25 — PORTD bit 5 / analog input 25 |
| פין 31 | RD6/AN26 — PORTD bit 6 / analog input 26 |
| פין 32 | RD7/AN27 — PORTD bit 7 / analog input 27 |
| פין 33 | RE0/AN5 — PORTE bit 0 / analog input 5 |
| פין 34 | RE1/AN6 — PORTE bit 1 / analog input 6 |
| פין 35 | RE2/AN7 — PORTE bit 2 / analog input 7 |
| פין 36 | RE3/MCLR — PORTE bit 3 / Master Clear Reset input |
| פין 37 | VDD — Positive supply voltage (duplicate pad) |
| פין 38 | VSS — Ground reference (duplicate pad) |
| פין 39 | VDD — Positive supply voltage (duplicate pad) |
| פין 40 | VSS — Ground reference (duplicate pad) |
| פין EP | EP — Exposed thermal pad / ground - must be soldered to copper pour |
יישומים טיפוסיים
PIC18F45K22-I/MV מתאים עבור 6 יישוםs: Industrial Sensor Hub, Automotive Body Control Module, Low-Power Remote Control, Smart Metering / Utility Endpoint, Capacitive Touch Keypad, Small Home Appliance Controller.
Industrial Sensor Hub
The PIC18F45K22-I/MV fits industrial sensor hubs because its 12-bit A/D converter provides up to 28 channels for direct interface with thermocouples, RTDs, pressure transducers, and 4-20 mA loops without external multiplexing. At 64 MHz (16 MIPS) the core can execute digital filtering, linearization, and MODBUS RTU framing across the two EUSARTs while nanoWatt XLP sleep current around 100 nA supports battery-backed installations. The 40-UQFN (5x5 mm) package plus AEC-Q100 grade also tolerate harsh factory-floor environments.
מומלץ
Automotive Body Control Module
The PIC18F45K22-I/MV's AEC-Q100 /MV suffix makes it automotive-qualified for body modules such as door locks, seat controllers, mirror adjusters, and lighting drivers. The 36 GPIO pins and two CCP modules with enhanced PWM (with dead-band control and auto-shutdown) drive half-bridges and high-side switches directly, while the two EUSARTs handle LIN bus and CAN-transceiver side-channels. AEC-Q100 plus -40C to +85C operating range supports in-cabin thermal stress profiles.
מומלץ
Low-Power Remote Control
In handheld remote controls, the PIC18F45K22-I/MV benefits from nanoWatt XLP sleep currents near 100 nA so a CR2032 cell can deliver multi-year standby. The CTMU peripheral performs precise time-of-flight for IR distance measurements, while the integrated 16-level hardware multiplier accelerates protocol calculations for sub-GHz or proprietary RF encoders. The 40-UQFN footprint occupies less than 25 mm^2, fitting inside a slim handheld enclosure without sacrificing GPIO count.
מומלץ
Smart Metering / Utility Endpoint
The PIC18F45K22-I/MV is well suited for smart metering endpoints that demand long battery life plus computational throughput for encryption and tamper detection. Its hardware multiplier accelerates AES-like cryptographic routines, the RTCC with on-chip 32 kHz oscillator timestamps every wake event, and the 12-bit A/D with internal sample-and-hold digitizes voltage and current waveforms for billing-grade metering. AEC-Q100 qualification plus the /MV QFN package supports outdoor installation in metering cabinets.
מומלץ
Capacitive Touch Keypad
The PIC18F45K22-I/MV on-chip CTMU (Charge Time Measurement Unit) turns the device into a single-chip capacitive touch controller for keypads, sliders, and proximity sensors. CTMU measures the capacitance of each electrode by charging through a programmable current and timing the resulting voltage ramp on a 16-bit timer, providing sub-picofarad resolution. This eliminates external touch ICs in small user interfaces such as appliance control panels and HVAC thermostats.
מומלץ
Small Home Appliance Controller
In small home appliances (coffee makers, blenders, vacuum cleaners, kitchen hoods), the PIC18F45K22-I/MV's two enhanced PWM CCPs drive MOSFET half-bridges for variable-speed motor control, while the 12-bit A/D reads thermistors, current shunts, and user potentiometers. Hardware dead-band control prevents shoot-through in the power stage, and the integrated RTCC schedules delayed-start and cycle programs. The 40-UQFN 5x5 mm footprint plus industrial temperature range handle sealed appliance environments.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC18F45K22-I/MV — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | PIC18F45K22-E/MV | PIC18F45K22T-I/MV | PIC18F46K22-I/MV | PIC18F45K50-I/MV |
|---|---|---|---|---|---|
| Package | 40-UQFN (5x5) | 40-UQFN (5x5) - same | 40-UQFN (5x5) - same | 40-UQFN (5x5) - same | 40-UQFN (5x5) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 32 KB | 32 KB | 32 KB | 64 KB | 32 KB |
| SRAM | 1536 bytes | 1536 bytes | 1536 bytes | 2560 bytes | 2048 bytes |
| CPU Frequency | 64 MHz (16 MIPS) | 64 MHz | 64 MHz | 64 MHz | 48 MHz |
| Operating Temperature | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C | -40C to +85C |
| AEC-Q100 Automotive | Yes (AEC-Q100 /MV) | Yes | Yes | Yes | Yes |
| USB Support | No | No | No | No | Yes (USB 2.0 FS) |
מבדילים עיקריים
- Lowest-cost automotive-grade UQFN-40 in the K22 family (לעומתPIC18F45K22-I/PT)
- Higher SRAM headroom for stack-intensive firmware (לעומתPIC18F45K50-I/MV)
- 2x Flash without pinout change for firmware growth (לעומתPIC18F46K22-I/MV)
- Industrial temperature vs extended temperature at same cost (לעומתPIC18F45K22-E/MV)
הערות תכנון
Estimated: the PIC18F45K22-I/MV in 40-UQFN (5x5 mm) package dissipates approximately 200-400 mW typical at 64 MHz / 5 V across industrial workloads. The exposed thermal pad (EP) on the package bottom MUST be soldered to a continuous PCB copper pour of at least 25 mm^2 across all four layers, stitched with thermal vias (8-12 vias, 0.3 mm drill) to a top-side ground island. Without this thermal pad soldered, junction temperature can rise 15-20 C above ambient even at 64 MHz, risking long-term reliability margins.
Place the 0.1 uF VDD decoupling capacitor and bulk 1-10 uF bypass within 3 mm of each VDD pin pair (pins 8, 37, 39). The MCLR/VPP pin (RE3, pin 36) needs a 10 kohm pull-up to VDD plus a 100 nF decoupling capacitor to ground for in-circuit serial programming (ICSP). Keep the crystal traces (RA6/OSC2, RA7/OSC1) short and surrounded by a continuous ground guard ring to minimize jitter. Avoid routing digital signals under the exposed pad of the UQFN.
Program the Brown-Out Reset (BOR) threshold to match the regulated supply rail (e.g., 2.85 V for 3.3 V operation, 4.35 V for 5 V) to prevent code execution at marginal voltages that may cause Flash corruption. The /MV variant is automotive-grade but the silicon does not include an internal watchdog timer enabled by default - explicitly enable the WDT in CONFIG2H with a postscaler matched to your worst-case loop latency, or the device can hang silently in an EMI event. Lastly, the ICSP clock and data pins (RB6/ICSPCLK, RB7/ICSPDAT) MUST be left free of external pull-ups exceeding 10 kohm or programming will fail.
Estimated: at 64 MHz / 3.3 V the PIC18F45K22-I/MV draws roughly 8-12 mA active I/O current, dropping to 3-5 mA at 16 MHz and 2-3 mA at 4 MHz via the internal PLL configuration. nanoWatt XLP sleep current of approximately 100 nA assumes the secondary oscillator and RTCC are active and the main oscillator is shut down; turning off RTCC with RTCOSC=OFF drops sleep current further. For battery budgets on CR2032 (220 mAh), duty-cycle calculations should limit active time to <0.1% of the period to achieve 5+ years of lifetime.
מידע על תאימות
AEC-Q100 qualified per Microchip product page for the /MV suffix. RoHS and REACH compliant per Microchip material declarations. Halogen-free status not explicitly listed in the verified web data - set to unknown.
