PIC18F56K42-I/MV - 64KB Flash 8-bit MCU 48-UQFN | Microchip
MPN: PIC18F56K42-I/MV ✓ Hoạt độngPIC18F56K42-I/MV Tóm tắt
A microcontroller (MCU) is a single-chip computer containing a CPU core, non-volatile program memory (Flash), volatile working memory (RAM), and a range of peripheral interfaces. The PIC18 architecture is an 8-bit Harvard RISC core from Microchip with an enhanced instruction set, a hardware multiplier, and prioritized vector interrupts. In the broader taxonomy, an MCU is a type of microcontroller, which itself falls under microcontrollers and processors in the embedded semiconductor category. The 56K42 specifically belongs to the PIC18(L)FxxK42 subfamily, which sits above general PIC16 parts in complexity and below the 16-bit dsPIC/PIC24 and 32-bit PIC32 families.
Key features of the PIC18F56K42 include the 12-bit Analog-to-Digital Converter with Computation (ADC2) - offering up to 35 external channels with automated oversampling, averaging, filtering, and threshold comparison. The integrated Hardware Capacitive Voltage Divider (CVD) supports mTouch capacitive touch sensing without external components. The device also includes Direct Memory Access (DMA) controllers, vector interrupts, a Digital-to-Analog Converter (DAC), comparators, configurable PWMs (CCP/ECCP), and the Device Information Area (DIA) for unique serial numbers and calibration constants.
The PIC18F56K42 implements Microchip's eXtreme Low Power (XLP) technology with multiple low-power modes (Sleep, Idle, Doze), a peripheral module disable feature, and an integrated charge pump that allows the 12-bit ADC to operate down to 1.8V VDD. The 48-pin UQFN package exposes up to 41 I/O pins with interrupt-on-change support and high-current sink/source capability on selected pins. The 64 MHz FOSC (16 MIPS at 4 clocks per instruction) gives ample headroom for sensor fusion, motor control loops, and protocol stacks.
Typical applications include industrial control, IoT sensor nodes, home automation, capacitive touch user interfaces, low-power battery-powered instrumentation, and small motor or lighting control. The combination of large memory, advanced analog, and XLP technology makes it well suited to applications that demand both signal conditioning and ultra-low standby current.
When designing with this device, use the MPLAB X IDE and MPLAB Code Configurator (MCC) to generate peripheral drivers and pin configurations. Always review the device errata for the specific silicon revision used in production, and consider migrating to the -E/-F temperature grades or QFP packages (such as PIC18F56K42-I/PT) if thermal dissipation or hand-rework is required.
This page synthesizes distributor pricing, drop-in alternatives drawn from the PIC18(L)FxxK42 family, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC18F56K42-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 PIC18F56K42-I/MV (cùng hình factor và footprint) — khác nhau ở Package, DAC, Program Memory (Flash), ADC, Comparators.
PIC18F46K42-I/MV
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F55K42-I/MV
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F57K42-I/MV
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F56K42-E/MV
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F46Q10-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F56K42-I/MV Tỷ lệ tối đa & tính chất điện
| Core | PIC18 8-bit RISC (Harvard) |
| Instruction Set | Enhanced PIC18, 16-bit instructions |
| Maximum CPU Frequency | 64 MHz |
| Performance | 16 MIPS |
| Program Memory (Flash) | 64 KB (32K x 16) |
| Data Memory (RAM) | 4 KB |
| EEPROM | 256 B |
| Operating Voltage Range | 1.8 V to 5.5 V (F-series) |
| I/O Pins | Up to 41 |
| ADC | 12-bit ADC2, up to 35 external channels |
| DAC | Yes (5-bit/8-bit DAC module) |
| Comparators | Yes (on-chip) |
| PWM Channels | Configurable CCP/ECCP + PWM |
| DMA | Yes (peripheral-to-memory / memory-to-peripheral) |
| Capacitive Touch (CVD) | mTouch hardware CVD |
| Timers | Multiple 8/16-bit timers |
| Communication | UART, SPI, I2C, EUSART |
| Low-Power Technology | XLP (Sleep / Idle / Doze modes) |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Hộp | 48-UQFN (MV) 6x6 mm |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | MSL3 (typical for UQFN) |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
Cấu hình chân PIC18F56K42-I/MV
| Chân 1 | RA0 — Analog/Digital I/O |
| Chân 2 | RA1 — Analog/Digital I/O |
| Chân 3 | RA2 — Analog/Digital I/O |
| Chân 4 | RA3 — Analog/Digital I/O |
| Chân 5 | RA4 — Analog/Digital I/O |
| Chân 6 | RA5 — Analog/Digital I/O |
| Chân 7 | RA6 — Analog/Digital I/O |
| Chân 8 | RA7 — Analog/Digital I/O |
| Chân 9 | VSS — Ground |
| Chân 10 | VDD — Positive supply |
| Chân 11 | RB0 — Digital I/O with interrupt-on-change |
| Chân 12 | RB1 — Digital I/O with interrupt-on-change |
| Chân 13 | RB2 — Digital I/O with interrupt-on-change |
| Chân 14 | RB3 — Digital I/O with interrupt-on-change |
| Chân 15 | RB4 — Digital I/O with interrupt-on-change |
| Chân 16 | RB5 — Digital I/O with interrupt-on-change |
| Chân 17 | RB6 — ICSPCLK / Digital I/O |
| Chân 18 | RB7 — ICSPDAT / Digital I/O |
| Chân 19 | VSS — Ground |
| Chân 20 | VDD — Positive supply |
| Chân 21 | RC0 — Digital I/O |
| Chân 22 | RC1 — Digital I/O |
| Chân 23 | RC2 — Digital I/O |
| Chân 24 | RC3 — Digital I/O |
| Chân 25 | RC4 — Digital I/O |
| Chân 26 | RC5 — Digital I/O |
| Chân 27 | RC6 — Digital I/O |
| Chân 28 | RC7 — Digital I/O |
| Chân 29 | VSS — Ground |
| Chân 30 | VDD — Positive supply |
| Chân 31 | RD0 — Digital I/O |
| Chân 32 | RD1 — Digital I/O |
| Chân 33 | RD2 — Digital I/O |
| Chân 34 | RD3 — Digital I/O |
| Chân 35 | RD4 — Digital I/O |
| Chân 36 | RD5 — Digital I/O |
| Chân 37 | RD6 — Digital I/O |
| Chân 38 | RD7 — Digital I/O |
| Chân 39 | VSS — Ground |
| Chân 40 | VDD — Positive supply |
| Chân 41 | RE0 — Digital I/O |
| Chân 42 | RE1 — Digital I/O |
| Chân 43 | RE2 — Digital I/O |
| Chân 44 | RE3 — Digital I/O |
| Chân 45 | VSS — Ground |
| Chân 46 | VDD — Positive supply |
| Chân 47 | RF0 — Digital I/O |
| Chân 48 | RF1 — Digital I/O |
Ứng dụng tiêu biểu
PIC18F56K42-I/MV phù hợp cho 7 Áp dụngs: Industrial Sensor Hub with mTouch HMI, Battery-Powered IoT Sensor Node, Home Appliance Control with Touch Panel, Automotive Body and Lighting Module, Low-Power Medical Measurement Device, Sensor Node with Custom Protocol Stack, Low-Cost LED Lighting Controller.
Industrial Sensor Hub with mTouch HMI
The PIC18F56K42-I/MV is well suited for industrial sensor hubs that combine analog front-end conditioning with a capacitive touch user interface. Its 12-bit ADC2 with hardware oversampling and automatic threshold compare offloads the CPU, while the mTouch CVD peripheral scans up to ~35 electrodes without external analog components. DMA channels move ADC results directly into memory, leaving the 16 MIPS core free to run a Modbus RTU slave over UART, a local PID loop, or a BLE HCI shim. The XLP Sleep mode (down to ~50 nA typical) preserves battery life during sensor idle periods, and the 64 KB Flash accommodates full Modbus plus capacitive-touch libraries without external storage.
Được đề xuất
Battery-Powered IoT Sensor Node
For IoT sensor nodes running on a 3 V coin cell or 2x AA, the PIC18F56K42-I/MV combines XLP Sleep / Idle / Doze modes with DMA-driven ADC2 scans to maximize battery life. The internal 64 MHz HFINTOSC eliminates the standby current of an external crystal, and the 1.8 V minimum supply extends useful runtime as the cells discharge. 4 KB of RAM is sufficient for queueing sensor samples before periodic transmissions, and the on-chip 256 B EEPROM stores calibration constants and last-known-state values that must survive power cycles. CIP (Core Independent Peripheral) operation means time-critical peripherals can run with the CPU in Sleep, drawing nanoamps.
Được đề xuất
Home Appliance Control with Touch Panel
In washing machines, induction cooktops, or air purifiers, the PIC18F56K42-I/MV serves as the main user-interface and supervisory controller. The mTouch CVD peripheral implements a glass-overlay touch keypad with no external analog ICs, while the on-chip comparators and CCP/ECCP PWMs drive LED indicators, triac firing, or low-side MOSFET switches for relays and valves. 64 KB Flash stores the application plus UI state-machine firmware, and the vector-interrupt structure guarantees sub-microsecond response to safety-critical inputs such as door-lock interlocks or zero-cross detectors.
Được đề xuất
Automotive Body and Lighting Module
Automotive body controllers benefit from the PIC18F56K42-I/MV's 41 GPIO pins, PWM richness, and CAN-friendly peripheral set when paired with an external CAN transceiver. The industrial-grade -I/MV part is specified for -40C to +85C operation, which covers cabin environments; underhood applications should migrate to the -E/MV (extended temperature) variant or to the AEC-Q100 qualified PIC18F56K42-Q1. The DMA-driven ADC2 supports accurate battery-voltage monitoring, lighting current sensing, and thermistor reads without burdening the CPU.
Được đề xuất
Low-Power Medical Measurement Device
For portable medical instruments such as pulse oximeters, glucose meters, or spirometers, the PIC18F56K42-I/MV's 12-bit ADC2 with hardware averaging delivers accurate signal acquisition, while its DMA controllers move sample streams directly to RAM for FFT or peak-detection algorithms. The XLP Sleep current below ~50 nA (typical) preserves battery life during standby, and the on-chip DAC drives a precision reference or bias voltage. The 64 KB Flash holds device drivers plus a small RTOS, and 4 KB of RAM is ample for sample buffers.
Được đề xuất
Sensor Node with Custom Protocol Stack
Designers building proprietary RF or wired protocols (Modbus RTU over RS-485, DMX-512, LIN, or custom 2.4 GHz sensor beacons) leverage the PIC18F56K42-I/MV's EUSART, SPI, and I2C peripherals to drive an external transceiver. 64 KB of Flash accommodates a full Modbus or LIN stack with diagnostics, while DMA offloads continuous UART reception into a ring buffer, freeing the 16 MIPS core to focus on protocol logic. The peripheral-pinning flexibility of PPS makes routing easy on the 48-pin UQFN.
Được đề xuất
Low-Cost LED Lighting Controller
In smart-LED or architectural-lighting products, the PIC18F56K42-I/MV's configurable PWM channels plus DMA produce flicker-free dimming across multiple channels, while the 12-bit ADC2 reads ambient-light and occupancy sensors. The 41 GPIO pins support large LED arrays or addressable-LED data lines (WS2811/APA102), and XLP Sleep keeps wall-switch standby power low. 64 KB Flash stores color-space conversion, schedules, and OTA-style bootloaders.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F56K42-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 | PIC18F46K42-I/MV | PIC18F55K42-I/MV | PIC18F57K42-I/MV | PIC18F56K42-E/MV | PIC18F46Q10-I/PT |
|---|---|---|---|---|---|---|
| Package | 48-UQFN (MV) 6x6 mm | 48-UQFN (MV) 6x6 mm | 48-UQFN (MV) 6x6 mm | 48-UQFN (MV) 6x6 mm | 48-UQFN (MV) 6x6 mm | TQFP-48 (PT) 7x7 mm |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash | 64 KB | 32 KB | 32 KB | 128 KB | 64 KB | 32 KB |
| RAM | 4 KB | 2 KB | 2 KB | 8 KB | 4 KB | 2 KB |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B |
| Maximum CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| ADC | 12-bit ADC2 | 12-bit ADC2 | 12-bit ADC2 | 12-bit ADC2 | 12-bit ADC2 | 12-bit ADC2 |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) |
Bảo phân biệt quan trọng
- Largest memory in the 48-pin PIC18 K42 UQFN lineup (vsPIC18F46K42-I/MV)
- DMA controllers offload ADC and communication peripherals (vsPIC18F46Q10-I/PT)
- mTouch CVD eliminates external analog for capacitive sensing (vsPIC18F27K40-I/SS)
- Extended-temperature variant available in same footprint (vsPIC18F46K42-I/MV)
Ghi chú thiết kế
The PIC18F56K42-I/MV supports a VDD range of 1.8 V to 5.5 V. Decouple VDD/VSS pairs (the device has multiple pairs on the 48-pin UQFN) with 100 nF ceramic capacitors placed within 3 mm of each VDD pin, plus a bulk 10 uF tantalum or polymer cap on the main rail. The on-chip charge pump keeps the ADC2 functional down to 1.8 V, but at lower VDD the ADC throughput drops - consult the A/D converter specifications table for VDD-dependent sample rates.
The 48-UQFN (MV) 6x6 mm package has an exposed pad that MUST be soldered to a ground copper pour for thermal and electrical performance. Use a via-array of 9 to 16 thermal vias (0.3 mm drill, 0.6 mm pad) under the e-pad and stitch the perimeter GND pour to the e-pad. Without the e-pad connection, electrical performance and 64 MHz operation can degrade.
Always read the PIC18FxxK42 device errata for the silicon revision marked on your parts (typically A1 or A2). Several early-revision errata affect ADC2 acquisition time, PPS mapping, and the CVD peripheral. Use MPLAB X IDE with the latest XC8 compiler and MCC plugin to generate configuration code that respects the errata workarounds. Lock-out the configuration bits you do not intend to change with #pragma config to prevent accidental in-field reprogramming.
When using the on-chip DMA to stream ADC2 samples into RAM, configure the ADC clock to be derived from the same source as the system clock to avoid A/D sample-time jitter. For UART baud rates above 115200, enable the high-speed baud-rate generator mode (BRGH=1) and use BRG16 for finer resolution. PPS allows remapping of EUSART, SPI, and I2C pins; verify the PPS lock register is set after configuration to prevent runaway from EMI events.
Thông tin tuân thủ
RoHS compliant per Microchip product page. The industrial -I/MV part is not AEC-Q100 qualified; for automotive applications, use the PIC18F56K42-I/MV (industrial) only in cabin environments or migrate to the AEC-Q100 qualified PIC18F56K42-Q1 variant in other QFN packages.