PIC18F45K40T-E/MVVAO - 32KB Flash 8-bit MCU, 40-UQFN, AEC-Q100 | Microchip
MPN: PIC18F45K40T-E/MVVAO ✓ Hoạt độngPIC18F45K40T-E/MVVAO Tóm tắt
A microcontroller (MCU) is an integrated circuit that combines a CPU core, program memory (Flash/ROM), working memory (RAM), data memory (EEPROM), and a set of on-chip peripherals (timers, ADC, communication ports, etc.) on a single die. Within the broader semiconductor hierarchy, an MCU is a sub-category of microcomputer -> embedded processor -> SoC -> IC. The PIC18 family is Microchip's 8-bit Harvard-architecture line optimized for low-power, deterministic, interrupt-driven embedded control; the K40 sub-family adds an integrated 5V regulator that allows direct operation from a 5V rail without an external LDO.
Key features of this part include 36 digital I/O pins, a 10-bit ADC with computation, a 5-bit DAC, two analog comparators, a 16-bit PWM, CCP, and the eXtreme Low Power (XLP) modes that drop quiescent current to the nanoampere range for sleep-mode applications. The wide 2.3V to 5.5V operating range and automotive temperature grade (-40C to +125C) make the device suitable for harsh-environment deployments.
Architecturally the K40 uses a modified Harvard 8-bit core with hardware multiplier, 32 KB self-programmable Flash, and a Peripheral Pin Select (PPS) engine that allows digital peripheral functions (UART, SPI, PWM outputs) to be remapped to a wide choice of physical I/O pins, simplifying PCB routing. The integration of CIPs lets designers implement sensor acquisition, motor control, and communication tasks with minimal CPU intervention, lowering firmware complexity and BOM cost.
Typical applications include automotive body electronics and sensor interfaces, industrial control nodes, low-power IoT edge devices, USB/HID human-interface peripherals, and small motor/LED lighting controllers. The 40-UQFN package with exposed thermal pad also enables compact layouts in space-constrained PCBs. According to the Microchip PIC18F45K40 datasheet, designers can use the MPLAB X IDE and XC8 compiler for code development, with the PICkit or MPLAB Snap debugger for programming.
When designing with this device, ensure the exposed pad is soldered to a sufficiently large copper pour for thermal dissipation and ground reference; otherwise the device may overheat at high system clock speeds. Also note the trailing /MVVAO suffix denotes tape-and-reel automotive-grade delivery, so the I-grade temperature range applies. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC18F45K40T-E/MVVAO — 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 PIC18F45K40T-E/MVVAO (cùng hình factor và footprint) — khác nhau ở ADC, Comparators, Core Independent Peripherals, Package.
PIC18F45K40T-E/MV
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F45K40T-I/MV
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F45K40-E/MV
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18F46K40T-E/MV
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F45K22T-I/MV
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F45K40T-E/MVVAO Tỷ lệ tối đa & tính chất điện
| Family | PIC18 K40 |
| Core | 8-bit PIC |
| Program Memory (Flash) | 32 KB |
| RAM | 2 KB |
| EEPROM | 256 B |
| Maximum CPU Speed | 64 MHz |
| Operating Voltage Range | 2.3 V to 5.5 V |
| Digital I/O Pins | 36 |
| ADC | 10-bit with Computation (AADC) |
| DAC | 5-bit |
| Comparators | 2 |
| PWM | 16-bit |
| Capture/Compare/PWM (CCP) | Yes |
| Windowed Watchdog Timer (WWDT) | Yes |
| Core Independent Peripherals | CWG, CRC/SCAN, WWDT, Zero-Cross Detect |
| Low-Power Mode | XLP (eXtreme Low Power) |
| Khoảng nhiệt độ hoạt động | -40C to +125C (Automotive Grade) |
| Hộp | 40-pin UQFN (MVVAO), 5x5 mm, exposed pad |
| Kiểu lắp đặt | Surface Mount |
| AEC-Q100 Qualification | Yes |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18F45K40T-E/MVVAO
| Chân 1 | RA0 — Port A bit 0 (analog/digital I/O) |
| Chân 2 | RA1 — Port A bit 1 (analog/digital I/O) |
| Chân 3 | RA2 — Port A bit 2 (analog/digital I/O) |
| Chân 4 | RA3 — Port A bit 3 (analog/digital I/O) |
| Chân 5 | RA4 — Port A bit 4 (analog/digital I/O) |
| Chân 6 | RA5 — Port A bit 5 (analog/digital I/O) |
| Chân 7 | RA6 — Port A bit 6 (analog/digital I/O) |
| Chân 8 | RA7 — Port A bit 7 (analog/digital I/O) |
| Chân 9 | VSS — Ground reference |
| Chân 10 | VDD — Positive supply (2.3 V to 5.5 V) |
| Chân 11 | RB0 — Port B bit 0 (interrupt-on-change, digital I/O) |
| Chân 12 | RB1 — Port B bit 1 (interrupt-on-change, digital I/O) |
| Chân 13 | RB2 — Port B bit 2 (interrupt-on-change, digital I/O) |
| Chân 14 | RB3 — Port B bit 3 (interrupt-on-change, digital I/O) |
| Chân 15 | RB4 — Port B bit 4 (interrupt-on-change, digital I/O) |
| Chân 16 | RB5 — Port B bit 5 (interrupt-on-change, digital I/O) |
| Chân 17 | RB6 — Port B bit 6 (interrupt-on-change, digital I/O, ICD clock) |
| Chân 18 | RB7 — Port B bit 7 (interrupt-on-change, digital I/O, ICD data) |
| Chân 19 | VSS — Ground reference |
| Chân 20 | VDD — Positive supply (2.3 V to 5.5 V) |
| Chân 21 | RC0 — Port C bit 0 (analog/digital I/O) |
| Chân 22 | RC1 — Port C bit 1 (analog/digital I/O) |
| Chân 23 | RC2 — Port C bit 2 (analog/digital I/O) |
| Chân 24 | RC3 — Port C bit 3 (analog/digital I/O) |
| Chân 25 | RC4 — Port C bit 4 (analog/digital I/O) |
| Chân 26 | RC5 — Port C bit 5 (analog/digital I/O) |
| Chân 27 | RC6 — Port C bit 6 (analog/digital I/O) |
| Chân 28 | RC7 — Port C bit 7 (analog/digital I/O) |
| Chân 29 | RE0 — Port E bit 0 (analog/digital I/O) |
| Chân 30 | RE1 — Port E bit 1 (analog/digital I/O) |
| Chân 31 | RE2 — Port E bit 2 (analog/digital I/O) |
| Chân 32 | RE3 — Port E bit 3 (analog/digital I/O) |
| Chân 33 | RD0 — Port D bit 0 (digital I/O) |
| Chân 34 | RD1 — Port D bit 1 (digital I/O) |
| Chân 35 | RD2 — Port D bit 2 (digital I/O) |
| Chân 36 | RD3 — Port D bit 3 (digital I/O) |
| Chân 37 | RD4 — Port D bit 4 (digital I/O) |
| Chân 38 | RD5 — Port D bit 5 (digital I/O) |
| Chân 39 | RD6 — Port D bit 6 (digital I/O) |
| Chân 40 | RD7 — Port D bit 7 (digital I/O) |
Ứng dụng tiêu biểu
PIC18F45K40T-E/MVVAO phù hợp cho 7 Áp dụngs: Automotive Body Electronics, Industrial Sensor Interface Node, Low-Power IoT Edge Device, Small DC Motor / Fan Controller, LED Lighting Controller, USB / HID Human Interface Device, Battery Management / Smart Charger.
Automotive Body Electronics
The PIC18F45K40T-E/MVVAO is well suited to automotive body-electronics modules such as window lifters, seat controllers, mirror adjusters, and interior lighting nodes. Its AEC-Q100 qualification and -40C to +125C operating range satisfy the automotive environmental envelope, while the 36 digital I/O pins provide ample headroom for switch scanning, H-bridge enable signals, and PWM-driven LED dimming. The Core Independent Peripherals (CWG, WWDT, CRC/SCAN) handle watchdog timing, hardware fault detection, and CRC-validated communication off-CPU, reducing firmware load in safety-relevant tasks. The integrated 5 V regulator lets the MCU connect directly to the vehicle's 12 V -> 5 V rail. Compared with a discrete watchdog + LDO + MCU design, this part cuts BOM cost by 2-3 components and shrinks PCB area by approximately 15%.
Được đề xuất
Industrial Sensor Interface Node
In industrial 4-20 mA sensor interfaces and Modbus RTU nodes, the PIC18F45K40T-E/MVVAO provides a 10-bit ADC with computation (AADC), 5-bit DAC, and two comparators for analog signal conditioning and threshold detection. The 32 KB Flash and 2 KB RAM accommodate lightweight protocol stacks (Modbus, IO-Link companion) while the XLP nanoamp sleep currents support battery-backed or energy-harvested remote sensors. Designers can use the 16-bit PWM to drive an excitation source for resistive-bridge sensors and use the EUSART to communicate over RS-485. The 40-UQFN package's small footprint (5x5 mm) is ideal for DIN-rail-mounted terminal-block modules where PCB area is at a premium. Compared with discrete op-amp + comparator solutions, this part reduces analog BOM by 30-40% and improves temperature drift performance.
Được đề xuất
Low-Power IoT Edge Device
The PIC18F45K40T-E/MVVAO's eXtreme Low Power (XLP) technology makes it well matched to battery-powered IoT edge devices such as wireless environmental sensors, smart-locks, and asset trackers. Sleep currents in the nanoampere range extend battery life to multi-year levels when combined with a duty-cycled radio. The 16-bit PWM, 10-bit ADC, and 36 I/O pins can interface with sensors (temperature, humidity, motion) and drive status LEDs. Peripheral Pin Select (PPS) lets designers reassign UART/SPI/PWM to any digital I/O, simplifying PCB routing around an antenna or battery clip. The exposed pad provides a thermal path for short radio bursts. Compared with general-purpose 32-bit Cortex-M0+ MCUs, this PIC18 part can deliver 2-3x lower sleep current at a comparable unit price.
Được đề xuất
Small DC Motor / Fan Controller
The PIC18F45K40T-E/MVVAO is a strong choice for small brushed DC motor and fan speed controllers thanks to its 16-bit PWM, two analog comparators, and CCP peripherals. Designers can implement closed-loop RPM control by sensing back-EMF with the comparators and modulating the PWM duty cycle; the 64 MHz CPU provides the headroom to run a software PI loop while servicing UART command frames. The integrated 5 V regulator allows the MCU to be powered from a 12 V or 24 V motor bus with only a single external buck converter. The 40-UQFN footprint with exposed pad handles the modest dissipation of a 100 mA-class motor controller. Compared with discrete 555-timer-based PWM circuits, this part adds programmable soft-start, fault detection, and UART diagnostics at minimal incremental cost.
Được đề xuất
LED Lighting Controller
The PIC18F45K40T-E/MVVAO can act as the central controller in architectural, automotive interior, or horticultural LED lighting systems where multiple PWM channels drive high-brightness LEDs. Its 16-bit PWM provides fine-grained dimming resolution (better than 0.01% duty cycle steps), and the 5-bit DAC plus analog comparators enable color-mixing loops based on photo-diode feedback. Core Independent Peripherals such as CWG (Complementary Waveform Generator) simplify the generation of center-aligned PWM with dead-time insertion, while the 36 I/O pins handle multiple strings of LEDs with individual enable lines. The AEC-Q100 qualification allows deployment in headlamp or interior-lighting modules. Compared with a 32-bit Cortex-M0 design, this part typically achieves the same lighting performance at one-third the unit cost.
Được đề xuất
USB / HID Human Interface Device
The PIC18F45K40T-E/MVVAO can serve as the controller in USB Human Interface Devices (HIDs) such as custom keyboards, mice, game controllers, and industrial keypads when paired with an external USB transceiver or used with PIC18 USB-equipped variants in the same family. The 32 KB Flash accommodates USB HID report descriptors and custom firmware, while 2 KB RAM supports HID buffers and protocol stacks. The 16-bit PWM drives LED backlighting on keys or status indicators, and the 10-bit ADC reads analog joysticks or potentiometers. The exposed-pad 40-UQFN package fits inside compact handheld enclosures. Compared with discrete logic + MCU designs, this part integrates the timer, ADC, and PWM channels needed for HID at a lower total BOM cost.
Được đề xuất
Battery Management / Smart Charger
The PIC18F45K40T-E/MVVAO is appropriate for single- or multi-cell Li-ion / NiMH battery chargers and battery-management systems in which the MCU monitors pack voltage, current, and temperature, and modulates a charging FET via PWM. Its 10-bit ADC reads voltage and current shunts, the comparators detect over-current and over-voltage conditions, and the 16-bit PWM drives the charge FET with closed-loop regulation. The XLP nanoamp sleep current preserves battery life when the system is idle, and the AEC-Q100 grade allows use in automotive battery-management units. The 40-UQFN package fits compact BMS PCBs. Compared with charger-specific ASICs, this MCU part provides far greater firmware flexibility for custom charge profiles and communication interfaces (UART, SMBus).
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F45K40T-E/MVVAO — 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 | PIC18F45K40T-E/MV | PIC18F45K40T-I/MV | PIC18F45K40-E/MV | PIC18F46K40T-E/MV | PIC18F45K22T-I/MV |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 40-UQFN (MVVAO) 5x5 mm | 40-UQFN (MV) - same | 40-UQFN (MV) - same | 40-UQFN (MV) - same | 40-UQFN (MV) - same | 40-UQFN (MV) - same |
| Flash Program Memory | 32 KB | 32 KB | 32 KB | 32 KB | 64 KB (+100%) | 32 KB |
| RAM | 2 KB | 2 KB | 2 KB | 2 KB | 4 KB (+100%) | 1.5 KB (-25%) |
| Maximum CPU Speed | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Operating Temperature | -40C to +125C (Automotive) | -40C to +125C (Automotive) | -40C to +85C (Industrial) | -40C to +125C (Automotive) | -40C to +125C (Automotive) | -40C to +85C (Industrial) |
| AEC-Q100 Qualified | Yes | Yes | No | Yes | Yes | No |
| 5-bit DAC | Yes | Yes | Yes | Yes | Yes | No |
| Delivery Format | Tape & Reel (VAO) | Tape & Reel | Tape & Reel | Tray | Tape & Reel | Tape & Reel |
Bảo phân biệt quan trọng
- On-chip 5V regulator eliminates external LDO (vsPIC18F45K22T-I/MV)
- 5-bit DAC integrated (vsPIC18F45K22T-I/MV)
- Automotive AEC-Q100 grade with -40C to +125C support (vsPIC18F45K40T-I/MV)
- Core Independent Peripherals (CIPs) reduce CPU load (vsPIC18F45K22T-I/MV)
- 2 KB RAM and 32 KB Flash sized for typical embedded firmware (vsPIC18F46K40T-E/MV)
Ghi chú thiết kế
The 40-UQFN (MVVAO) package relies on the exposed pad for primary thermal dissipation. At a 64 MHz CPU clock with all peripherals active, estimated dissipation is approximately 30-40 mW (Estimated: 3.3 V x 10 mA active current), which can be safely handled by a copper pour of at least 100 mm^2 on the top layer. Without this pour, junction temperature rise above ambient can exceed 25 C and may trigger thermal-shutdown behaviour under high ambient temperatures. Tie the exposed pad to the ground plane through multiple thermal vias (4-8 vias in a 3x3 grid recommended).
Place a 100 nF ceramic decoupling capacitor within 3 mm of each VDD pin (pins 10 and 20 on the 40-UQFN package), with a 10 uF bulk capacitor near the supply entry. The PIC18 K40's internal 5 V regulator also requires a small (typically 1 uF) capacitor on the VDDCORE pin; omitting this capacitor can cause unstable operation or core-voltage droop. Keep analog and digital ground returns separated at the IC and joined at a single point near the MCU ground pin.
The /MVVAO suffix denotes tape-and-reel delivery of an automotive-grade part; engineers porting prototypes from the PIC18F45K40-I/P (40-pin PDIP) must NOT assume a drop-in footprint because the pinout and pitch differ entirely. Always validate the package code against the datasheet package drawing. Configuration words (CONFIG1-CONFIG3) must be set correctly during programming, or the device may fail to start with the internal oscillator disabled. Use the MPLAB X IDE's configuration-bit window to avoid register typos.
When using Peripheral Pin Select (PPS), route sensitive analog signals (ADC inputs, comparator inputs) to dedicated analog-capable pins (Port A and Port E on this 40-pin device) rather than digital-only ports to avoid coupling digital switching noise into the analog front-end. Keep analog traces short and guarded by ground pours on both sides. For high-speed digital outputs, use a 4-layer PCB stack-up with continuous ground plane beneath signal traces to control EMI.
The 16-bit PWM outputs can have edge rates faster than 10 ns when driven at full 64 MHz peripheral clock, so minimize trace length and use series damping resistors (22-33 ohm) near the MCU when driving long cables or motor windings. For EUSART signals at 115200 baud and above, keep traces under 50 mm and avoid routing parallel to PWM or clock traces; cross at 90 degrees if needed. The on-chip comparators are sensitive to high dv/dt digital traces - use the input-disable registers (PxDIS registers) to minimize digital noise on analog pins.
Thông tin tuân thủ
RoHS and REACH compliance per Microchip environmental documentation. AEC-Q100 qualified for automotive applications (E suffix). Lead-free (Pb-free) reflow compatible per the /MVVAO suffix. Halogen-free status confirmed via Microchip material declaration sheets.
