PIC18F45K22-I/MV - 8-Bit 64MHz 32KB Flash MCU 40-UQFN | Microchip
MPN: PIC18F45K22-I/MV ✓ Hoạt độngPIC18F45K22-I/MV Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho PIC18F45K22-I/MV — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC18F45K22-I/MV (cùng hình factor và footprint) — khác nhau ở Package, Timers, Operating Temperature, ADC, Comparators.
PIC18F45K22-E/MV
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F45K22T-I/MV
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F46K22-I/MV
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F45K50-I/MV
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F26K22-I/SO
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18F45K22-I/MV Tỷ lệ tối đa & tính chất điện
| 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 |
| Hộp | 40-pin UQFN (MV) 5x5 mm with EP |
| Kiểu lắp đặt | Surface Mount |
| Operating Temperature (Industrial) | -40C to +85C |
| Automotive Qualification | AEC-Q100 |
| Low-Power Technology | nanoWatt XLP (sleep I ~100 nA) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18F45K22-I/MV
| Chân 1 | RA2/AN2 — PORTA bit 2 / analog input channel 2 |
| Chân 2 | RA3/AN3/VREF+ — PORTA bit 3 / analog input 3 / positive reference |
| Chân 3 | RA4/AN4/T0CKI — PORTA bit 4 / analog input 4 / Timer0 clock input |
| Chân 4 | RA5/AN5/SS/HLVDIN — PORTA bit 5 / SPI Slave Select / HLVD input |
| Chân 5 | RA6/AN6/OSC2 — PORTA bit 6 / analog input 6 / crystal oscillator output |
| Chân 6 | RA7/AN7/OSC1 — PORTA bit 7 / analog input 7 / crystal oscillator input |
| Chân 7 | VSS — Ground reference |
| Chân 8 | VDD — Positive supply voltage (2.5 V / 3.3 V / 5 V) |
| Chân 9 | RB0/AN12/INT0 — PORTB bit 0 / analog input 12 / external interrupt 0 |
| Chân 10 | RB1/AN10/INT1 — PORTB bit 1 / analog input 10 / external interrupt 1 |
| Chân 11 | RB2/AN8/INT2 — PORTB bit 2 / analog input 8 / external interrupt 2 |
| Chân 12 | RB3/AN9/INT3 — PORTB bit 3 / analog input 9 / external interrupt 3 |
| Chân 13 | RB4/AN11 — PORTB bit 4 / analog input 11 |
| Chân 14 | RB5/AN13 — PORTB bit 5 / analog input 13 |
| Chân 15 | RB6/ICSPCLK — PORTB bit 6 / ICSP clock |
| Chân 16 | RB7/ICSPDAT — PORTB bit 7 / ICSP data |
| Chân 17 | RC0/SOSCO — PORTC bit 0 / secondary oscillator output |
| Chân 18 | RC1/SOSCI — PORTC bit 1 / secondary oscillator input |
| Chân 19 | RC2/AN14 — PORTC bit 2 / analog input 14 |
| Chân 20 | RC3/AN15/SCL1 — PORTC bit 3 / analog input 15 / I2C1 clock |
| Chân 21 | RC4/AN16/SDA1 — PORTC bit 4 / analog input 16 / I2C1 data |
| Chân 22 | RC5/AN17 — PORTC bit 5 / analog input 17 |
| Chân 23 | RC6/AN18 — PORTC bit 6 / analog input 18 |
| Chân 24 | RC7/AN19 — PORTC bit 7 / analog input 19 |
| Chân 25 | RD0/AN20 — PORTD bit 0 / analog input 20 |
| Chân 26 | RD1/AN21 — PORTD bit 1 / analog input 21 |
| Chân 27 | RD2/AN22 — PORTD bit 2 / analog input 22 |
| Chân 28 | RD3/AN23 — PORTD bit 3 / analog input 23 |
| Chân 29 | RD4/AN24 — PORTD bit 4 / analog input 24 |
| Chân 30 | RD5/AN25 — PORTD bit 5 / analog input 25 |
| Chân 31 | RD6/AN26 — PORTD bit 6 / analog input 26 |
| Chân 32 | RD7/AN27 — PORTD bit 7 / analog input 27 |
| Chân 33 | RE0/AN5 — PORTE bit 0 / analog input 5 |
| Chân 34 | RE1/AN6 — PORTE bit 1 / analog input 6 |
| Chân 35 | RE2/AN7 — PORTE bit 2 / analog input 7 |
| Chân 36 | RE3/MCLR — PORTE bit 3 / Master Clear Reset input |
| Chân 37 | VDD — Positive supply voltage (duplicate pad) |
| Chân 38 | VSS — Ground reference (duplicate pad) |
| Chân 39 | VDD — Positive supply voltage (duplicate pad) |
| Chân 40 | VSS — Ground reference (duplicate pad) |
| Chân EP | EP — Exposed thermal pad / ground - must be soldered to copper pour |
Ứng dụng tiêu biểu
PIC18F45K22-I/MV phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F45K22-I/MV — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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) |
Bảo phân biệt quan trọng
- Lowest-cost automotive-grade UQFN-40 in the K22 family (vsPIC18F45K22-I/PT)
- Higher SRAM headroom for stack-intensive firmware (vsPIC18F45K50-I/MV)
- 2x Flash without pinout change for firmware growth (vsPIC18F46K22-I/MV)
- Industrial temperature vs extended temperature at same cost (vsPIC18F45K22-E/MV)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.
