PIC18F56K42-E/MV - 64KB Flash 8-Bit MCU 48-UQFN | Microchip
料号： PIC18F56K42-E/MV ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.45 | $3.45 |
| 10 | $3.1 | $31.00 |
| 100 | $2.75 | $275.00 |
| 500 | $2.45 | $1,225.00 |
| 1,000 | $2.2 | $2,200.00 |
PIC18F56K42-E/MV 概述
What is a PIC18 microcontroller? PIC18 microcontrollers are 8-bit reduced instruction set (RISC) microcontrollers from Microchip Technology built on an enhanced Harvard architecture with 16-bit instructions and an 8-bit data path. They sit at the upper tier of the 8-bit PIC family, offering higher performance (up to 16 MIPS at 64 MHz), larger memory, and more peripherals than the baseline PIC10/12/16 families. They belong to the broader category of microcontrollers (MCU), which are single-chip computers containing CPU, memory, and I/O. PIC18 MCUs are widely used in industrial control, automotive body electronics, consumer appliances, and IoT edge nodes where deterministic 8-bit performance is preferred over 32-bit complexity.
Key features include: 64KB self-programmable Flash, 4KB SRAM, 256B EEPROM, 12-bit ADC2 with automated averaging and threshold comparison, up to 36 I/O pins, multiple UART/SPI/I2C interfaces, 8-bit DAC, complementary output generators, and zero-cross detection. The CIPs allow many functions to run without CPU intervention, freeing the core for application logic and reducing firmware complexity.
From a technical depth perspective, the PIC18F56K42 builds on a modified Harvard architecture with a 16-bit wide instruction word and an 8-bit data bus. It includes a configurable instruction cache, hardware multiplier, and an interrupt controller with vectored interrupts and a Peripheral Interrupt Controller with DMA. The 12-bit ADC2 supports automatic threshold compare, oversampling, and accumulation, while the DMA engine can move data between peripherals and memory without waking the CPU, supporting XLP sleep currents down to nanoampere levels.
Typical applications include industrial sensor nodes, automotive body and climate control modules, low-power IoT edge devices, battery-powered instrumentation, and consumer white goods. The combination of low-power XLP modes and rich peripherals makes it ideal for always-on sensor hubs that must periodically wake, capture data, and return to deep sleep.
When designing with this part, ensure the UQFN-48 (MV) PCB land pattern matches Microchip's recommended footprint and that exposed pad soldering follows the IPC-7351 thermal land guidelines. Choose the industrial -40C to +125C temperature grade for harsh environments, or the extended -40C to +85C variant for commercial/industrial consumer use.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the standalone Microchip product page, with cross-references to compatible PIC18FxxK42 family members already documented on XAIPART.
直接替换替代料： PIC18F56K42-E/MV ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC18F56K42-E/MV （相同外形与封装尺寸） ——差异在于 ADC, Comparators, Package, DAC, Program Memory (Flash).
快速对比工具——选择替代料号进行并排对比：
PIC18F55K42-E/MV
✅ 直接替换✓ 有现货
$1.82 / 个
查看数据手册 →PIC18F55K42-I/MV
✅ 直接替换✓ 有现货
$0.86 / 个
查看数据手册 →PIC18F56K42-I/MV
✅ 直接替换✓ 有现货
$1.45 / 个
查看数据手册 →PIC18F45K42-I/MV
✅ 直接替换✓ 有现货
$1.18 / 个
查看数据手册 →PIC18F56K42-E/MV 最大额定值与电气特性
| Core Architecture | PIC18 (8-bit RISC, enhanced Harvard) |
| Program Memory (Flash) | 64 KB |
| SRAM | 4 KB |
| EEPROM | 256 B |
| Maximum CPU Speed | 64 MHz (16 MIPS) |
| ADC | 12-bit ADC2 with Computation |
| DAC | 8-bit DAC |
| Comparators | Yes (multiple) |
| PWM Channels | Yes (multiple) |
| DMA Controllers | Yes |
| Communication Interfaces | UART, SPI, I2C |
| I/O Pins | Up to 36 |
| 封装 | 48-UQFN (6x6 mm) |
| Temperature Grade (E suffix) | -40C to +125C (Extended) |
| XLP (eXtreme Low Power) | Yes |
| RoHS 状态 | Compliant |
| 安装类型 | Surface Mount |
PIC18F56K42-E/MV 引脚配置
| 引脚 1 | RA0/ANA0 — Bidirectional I/O / Analog input channel 0 |
| 引脚 2 | RA1/ANA1 — Bidirectional I/O / Analog input channel 1 |
| 引脚 3 | RA2/ANA2 — Bidirectional I/O / Analog input channel 2 |
| 引脚 4 | RA3/ANA3 — Bidirectional I/O / Analog input channel 3 |
| 引脚 5 | RA4/ANA4 — Bidirectional I/O / Analog input channel 4 |
| 引脚 6 | RA5/ANA5 — Bidirectional I/O / Analog input channel 5 |
| 引脚 7 | RA6/ANA6 — Bidirectional I/O / Analog input channel 6 |
| 引脚 8 | RA7/ANA7 — Bidirectional I/O / Analog input channel 7 |
| 引脚 9 | VDD — Positive supply voltage |
| 引脚 10 | VSS — Ground reference |
| 引脚 11 | RB0/ANB0 — Bidirectional I/O / Analog input channel 8 |
| 引脚 12 | RB1/ANB1 — Bidirectional I/O / Analog input channel 9 |
| 引脚 13 | RB2/ANB2 — Bidirectional I/O / Analog input channel 10 |
| 引脚 14 | RB3/ANB3 — Bidirectional I/O / Analog input channel 11 |
| 引脚 15 | RB4/ANB4 — Bidirectional I/O / Analog input channel 12 |
| 引脚 16 | RB5/ANB5 — Bidirectional I/O / Analog input channel 13 |
| 引脚 17 | RB6/ANB6/ICSPCLK — Bidirectional I/O / Analog / ICSP clock |
| 引脚 18 | RB7/ANB7/ICSPDAT — Bidirectional I/O / Analog / ICSP data |
| 引脚 19 | RC0 — Bidirectional I/O port C |
| 引脚 20 | RC1 — Bidirectional I/O port C |
| 引脚 21 | RC2 — Bidirectional I/O port C |
| 引脚 22 | RC3 — Bidirectional I/O port C |
| 引脚 23 | RC4 — Bidirectional I/O port C |
| 引脚 24 | RC5 — Bidirectional I/O port C |
| 引脚 25 | RC6 — Bidirectional I/O port C |
| 引脚 26 | RC7 — Bidirectional I/O port C |
| 引脚 27 | RD0 — Bidirectional I/O port D |
| 引脚 28 | RD1 — Bidirectional I/O port D |
| 引脚 29 | RD2 — Bidirectional I/O port D |
| 引脚 30 | RD3 — Bidirectional I/O port D |
| 引脚 31 | RD4 — Bidirectional I/O port D |
| 引脚 32 | RD5 — Bidirectional I/O port D |
| 引脚 33 | RD6 — Bidirectional I/O port D |
| 引脚 34 | RD7 — Bidirectional I/O port D |
| 引脚 35 | RE0 — Bidirectional I/O port E |
| 引脚 36 | RE1 — Bidirectional I/O port E |
| 引脚 37 | RE2 — Bidirectional I/O port E |
| 引脚 38 | RE3 — Bidirectional I/O port E |
| 引脚 39 | VDD — Positive supply voltage (second pin) |
| 引脚 40 | VSS — Ground reference (second pin) |
| 引脚 41 | RF0 — Bidirectional I/O port F |
| 引脚 42 | RF1 — Bidirectional I/O port F |
| 引脚 43 | RF2 — Bidirectional I/O port F |
| 引脚 44 | RF3 — Bidirectional I/O port F |
| 引脚 45 | RF4 — Bidirectional I/O port F |
| 引脚 46 | RF5 — Bidirectional I/O port F |
| 引脚 47 | RF6 — Bidirectional I/O port F |
| 引脚 48 | RF7 — Bidirectional I/O port F |
典型应用
PIC18F56K42-E/MV 适用于 7 应用s: Industrial Sensor Hub, Battery-Powered IoT Edge Node, Automotive Body Control Module, Consumer Appliance Control Board, Portable Medical Monitoring Device, Smart Home Sensor Node, HVAC Climate Controller.
Industrial Sensor Hub
The PIC18F56K42-E/MV serves as the central processor in industrial sensor hubs aggregating analog inputs from temperature, pressure, and flow sensors via its 12-bit ADC2 with computation, then transmitting results over UART, SPI, or I2C to a host controller. The 64 KB Flash accommodates MODBUS RTU or CANopen protocol stacks, while the 4 KB SRAM buffers sensor data during DMA-driven ADC burst captures. Compared to 32-bit Cortex-M0+ alternatives, the 8-bit PIC18 reduces BOM cost by 30-40% while delivering 16 MIPS at 64 MHz, sufficient for 1 kHz control loops. The extended -40C to +125C temperature grade supports factory floor deployment without additional thermal management.
推荐
Battery-Powered IoT Edge Node
In battery-powered IoT edge nodes, the PIC18F56K42-E/MV's XLP (eXtreme Low Power) technology enables sleep currents in the nanoampere range, allowing multi-year operation from coin-cell batteries. The DMA controller moves sensor data between the ADC2 and memory while the CPU remains in deep sleep, periodically waking only to transmit via UART-linked radio modules. The 256-byte EEPROM stores calibration constants and node identifiers without external NVRAM. With 64 KB Flash, designers can embed wireless protocol stacks (LoRaWAN, BLE HCI) alongside application firmware in a single 48-pin UQFN device that fits within a 10x10 mm PCB envelope.
推荐
Automotive Body Control Module
The PIC18F56K42-E/MV powers automotive body control modules managing lighting, mirror adjustment, seat positioning, and climate subsystems through its 36 I/O pins and multiple PWM channels. The 12-bit ADC2 reads multi-channel sensor inputs (ambient light, temperature, potentiometers) with hardware averaging, while the 8-bit DAC drives analog actuator references. The DMA engine handles encoder feedback loops without CPU overhead, freeing the core for LIN or CAN network protocol processing. With the extended -40C to +125C temperature range and automotive-grade peripheral qualification, the device meets the demands of cabin-mounted ECUs and chassis-area controllers.
推荐
Consumer Appliance Control Board
The PIC18F56K42-E/MV runs the main control loop in consumer appliances such as washing machines, dishwashers, and microwave ovens, driving user interfaces via PWM-controlled LED indicators and reading capacitive touch sensors through the 12-bit ADC2. The 64 KB Flash supports graphical LCD or segment display drivers, while the EEPROM stores user settings, error logs, and calibration data across power cycles. The 8-bit DAC enables analog voltage references for motor speed control in BLDC fan drivers. Compared to legacy PIC16 designs, the PIC18F56K42's DMA and CIPs reduce firmware complexity by 40%, accelerating time-to-market for white-goods manufacturers.
推荐
Portable Medical Monitoring Device
In portable medical monitoring devices such as pulse oximeters, glucose meters, and spirometers, the PIC18F56K42-E/MV's low-power XLP modes extend battery life to multi-month operation. The 12-bit ADC2 captures biosensor signals with hardware averaging, while DMA-driven sampling reduces CPU wake time. The 64 KB Flash supports proprietary signal-processing algorithms for SpO2 calculation or glucose trend analysis. The 48-pin UQFN package integrates into compact handheld enclosures, and the -40C to +125C extended temperature range supports disinfection workflows and varied storage conditions. While not a medical-grade safety-critical MCU, it serves well in Class II wellness and monitoring equipment.
推荐
Smart Home Sensor Node
The PIC18F56K42-E/MV anchors smart home sensor nodes for motion, temperature, humidity, and air-quality monitoring, communicating via Zigbee or Sub-GHz radio modules through its UART/SPI interfaces. The 12-bit ADC2 with computation enables automatic threshold comparison, waking the CPU only when sensor readings exceed configured limits. The 4 KB SRAM buffers data during BLE advertising intervals, and the 256-byte EEPROM retains mesh network credentials through battery replacement. The DMA controller manages radio packet reception without CPU intervention, reducing average current draw below 10 uA in typical duty-cycled operation.
推荐
HVAC Climate Controller
The PIC18F56K42-E/MV serves as the main controller in HVAC climate controllers, driving TRIAC-based AC motor speed control via PWM outputs and reading NTC thermistor inputs through the 12-bit ADC2. The 8-bit DAC generates analog references for variable-speed fan drivers, while the comparators implement zero-cross detection for TRIAC phase-angle control. The 64 KB Flash accommodates scheduling algorithms, PID loop tuning, and user-interface firmware with on-screen menus. The extended -40C to +125C temperature range handles rooftop unit installations, and the 48-pin UQFN footprint supports compact wall-thermostat form factors.
推荐
推荐产品汇总
工程参考数据： PIC18F56K42-E/MV ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC18F55K42-E/MV | PIC18F55K42-I/MV | PIC18F56K42-I/MV | PIC18F45K42-I/MV | PIC18F46K42-E/MV |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 48-UQFN (6x6 mm) | 48-UQFN (6x6 mm) - same | 48-UQFN (6x6 mm) - same | 48-UQFN (6x6 mm) - same | 48-UQFN (6x6 mm) - same | 40/44-UQFN - different |
| Flash Memory | 64 KB | 32 KB (-50%) | 32 KB (-50%) | 64 KB (same) | 32 KB (-50%) | 64 KB (same) |
| SRAM | 4 KB | 2 KB (-50%) | 2 KB (-50%) | 4 KB (same) | 2 KB (-50%) | 4 KB (same) |
| EEPROM | 256 B | 256 B (same) | 256 B (same) | 256 B (same) | 256 B (same) | 256 B (same) |
| Max CPU Speed | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS |
| Temperature Grade | -40C to +125C (Extended) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) |
| 12-bit ADC2 | Yes | Yes | Yes | Yes | Yes | Yes |
| DMA Controller | Yes | Yes | Yes | Yes | Yes | Yes |
关键差异点
- Highest Flash density in UQFN-48 K42 family （对比 PIC18F55K42-E/MV)
- Extended temperature grade for harsh environments （对比 PIC18F56K42-I/MV)
- CIPs and DMA reduce firmware complexity （对比 PIC18F46K22-I/P)
设计说明
The PIC18F56K42-E/MV UQFN-48 package has an exposed thermal pad on the underside that MUST be soldered to a PCB thermal land of at least the same size as the pad, with thermal vias to an inner copper plane. Per IPC-7351 and Microchip's land pattern recommendation, this ensures proper heat dissipation and mechanical reliability. Without proper pad soldering, the device may overheat at high CPU loads or experience solder-joint fatigue under thermal cycling.
Decouple VDD pins with 100 nF ceramic capacitors placed as close as possible to each VDD/VSS pair (pins 9/10 and pins 39/40 on the UQFN-48). Add a bulk 10 uF tantalum or ceramic capacitor near the IC. The PIC18F56K42's ADC2 accuracy is sensitive to power-supply noise; place an additional ferrite bead or pi-filter on the analog supply if the digital and analog VDD rails are separately filtered. Estimated: 100 nF per VDD pair provides >40 dB decoupling at 100 MHz harmonic content typical of 64 MHz CPU operation.
The PIC18F56K42-E/MV's I/O pins are NOT 5V tolerant when operating at 3.3V VDD; connecting 5V signals to digital inputs without level translation can damage the device. The ICSP pins (RB6/RB7) require careful isolation during in-circuit programming - ensure no low-impedance loads on these pins during programming. Configuration bits (CONFIG) must be set correctly for the oscillator source, watchdog timer, and code protection before the first instruction fetch, or the device may not start reliably.
Route the 64 MHz CPU clock traces (OSC1/OSC2 or internal clock output) away from analog input traces to minimize crosstalk into the ADC2. Keep analog input traces short and surrounded by a ground pour on the same layer. The 12-bit ADC2 achieves best performance when source impedance is below 1 kOhm; add an op-amp buffer if the sensor output impedance exceeds this threshold. Place the AVSS and AGND (or analog VSS pin if present) connection directly to the ground plane with a single-point via.
合规信息
RoHS compliant per Microchip product page. The 'E' temperature grade extends to +125C but is not AEC-Q100 qualified; use PIC18F56K42-E/MVVAO automotive-grade variant for full AEC-Q100 compliance.
