PIC18F56K42-E/PT - 8-Bit 64MHz 64KB Flash MCU | Microchip
料号： PIC18F56K42-E/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.3 | $3.30 |
| 10 | $2.97 | $29.70 |
| 100 | $2.64 | $264.00 |
| 500 | $2.34 | $1,170.00 |
| 1,000 | $2.08 | $2,080.00 |
PIC18F56K42-E/PT 概述
An 8-bit PIC microcontroller is a Harvard-architecture CMOS MCU that executes a RISC-like instruction set on 8-bit data while allowing 16-bit-wide program memory fetches, providing predictable timing and deterministic interrupt response. The PIC18 family sits at the top of Microchip's 8-bit portfolio as a high-performance tier, positioned above PIC16 and PIC10/12/14/15 families and below the dsPIC and PIC32 32-bit lines. The K42 sub-family adds Core Independent Peripherals (CIPs) such as CLC, NCO, PWM, and ADC with Computation (ADC2) that operate without CPU intervention, enabling low-power and real-time control designs.
Key features of the PIC18F56K42 include 12-bit ADC with up to 35 external channels, 5-bit DAC, 8-bit DAC reference, hardware CVD for capacitive touch, four 16-bit timers, two I2C, two SPI, two UART, and 44 dedicated I/O pins. The integrated charge pump improves ADC accuracy at low VDD, while the XLP (eXtreme Low Power) technology enables deep Sleep currents down to sub-microamp levels with retention.
Architecturally, the device combines a 16-bit program bus, 8-bit data bus, single-cycle hardware multiplier, and a vectored interrupt controller. CIPs such as CLC, NCO, and PWM with complementary outputs are interconnected via a fabric-like routing matrix, allowing analog and timing functions to be wired together in hardware and reducing firmware load.
Typical applications include industrial control panels, home appliances, motor control BLDC drivers, capacitive touch user interfaces, IoT sensor nodes, and automotive body and convenience modules. The extended temperature grade (-E) supports under-hood and outdoor deployments.
Designers should pay attention to VDD/VSS decoupling: place a 100 nF X7R ceramic as close as possible to each power pin pair and a bulk 10 uF tantalum or ceramic on the main rail. The exposed pad on TQFP-EP must be soldered to the ground plane for thermal dissipation and electrical reference.
This page synthesizes distributor pricing, drop-in PIC18FxxK42 alternatives, and practical design notes not found in the manufacturer datasheet alone, helping procurement and firmware engineers make informed selection decisions.
直接替换替代料： PIC18F56K42-E/PT ——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/PT （相同外形与封装尺寸） ——差异在于 Package, ADC, Program Memory (Flash), Comparators, PWM Channels.
快速对比工具——选择替代料号进行并排对比：
PIC18F56K42-I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F55K42-I/PT
✅ 直接替换✓ 有现货
$2.05 / 个
查看数据手册 →PIC18F57K42-I/PT
✅ 直接替换✓ 有现货
$2.72 / 个
查看数据手册 →PIC18F56K42-I/MV
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.45 / 个
查看数据手册 →PIC18F55K42T-I/MV
✅ 直接替换✓ 有现货
$1.65 / 个
查看数据手册 →PIC18F56K42-E/PT 最大额定值与电气特性
| Core Architecture | 8-bit PIC18 RISC |
| CPU Speed | 64 MHz (16 MIPS) |
| Program Memory (Flash) | 64 KB (32K x 16) |
| SRAM | 4 KB |
| EEPROM | 1 KB |
| Supply Voltage (VDD) | 2.3 V to 5.5 V |
| 工作温度 | -40C to +125C (Extended, -E) |
| 封装 | 48-TQFP-EP (7x7 mm) |
| I/O Pins | 44 |
| ADC | 12-bit, up to 35 external channels with ADC2 computation |
| DAC | 5-bit + 8-bit reference DAC |
| Timers | 4 x 16-bit, 2 x 8-bit |
| Communication | 2x UART, 2x SPI, 2x I2C |
| Core Independent Peripherals | CLC, NCO, PWM, Hardware CVD |
| RoHS 状态 | Compliant |
PIC18F56K42-E/PT 引脚配置
| 引脚 1 | RA0/ANA0 — GPIO RA0 / ADC channel ANA0 |
| 引脚 2 | RA1/ANA1 — GPIO RA1 / ADC channel ANA1 |
| 引脚 3 | RA2/ANA2 — GPIO RA2 / ADC channel ANA2 |
| 引脚 4 | RA3/ANA3 — GPIO RA3 / ADC channel ANA3 |
| 引脚 5 | RA4/ANA4 — GPIO RA4 / ADC channel ANA4 |
| 引脚 6 | RA5/ANA5 — GPIO RA5 / ADC channel ANA5 |
| 引脚 7 | RA6/ANA6 — GPIO RA6 / ADC channel ANA6 |
| 引脚 8 | RA7/ANA7 — GPIO RA7 / ADC channel ANA7 |
| 引脚 9 | VDD — Positive supply voltage (2.3V to 5.5V) |
| 引脚 10 | VSS — Ground reference |
| 引脚 11 | RB0/ANB0 — GPIO RB0 / ADC channel ANB0 |
| 引脚 12 | RB1/ANB1 — GPIO RB1 / ADC channel ANB1 |
| 引脚 13 | RB2/ANB2 — GPIO RB2 / ADC channel ANB2 |
| 引脚 14 | RB3/ANB3 — GPIO RB3 / ADC channel ANB3 |
| 引脚 15 | RB4/ANB4 — GPIO RB4 / ADC channel ANB4 |
| 引脚 16 | RB5/ANB5 — GPIO RB5 / ADC channel ANB5 / CVD reference |
| 引脚 17 | RB6/ANB6 — GPIO RB6 / ADC channel ANB6 / ICDCLK |
| 引脚 18 | RB7/ANB7 — GPIO RB7 / ADC channel ANB7 / ICDDAT |
| 引脚 19 | RC0 — GPIO RC0 |
| 引脚 20 | RC1 — GPIO RC1 |
| 引脚 21 | RC2 — GPIO RC2 |
| 引脚 22 | RC3 — GPIO RC3 |
| 引脚 23 | RC4 — GPIO RC4 |
| 引脚 24 | RC5 — GPIO RC5 |
| 引脚 25 | RC6 — GPIO RC6 / TX |
| 引脚 26 | RC7 — GPIO RC7 / RX |
| 引脚 27 | RE3 — GPIO RE3 / MCLR |
| 引脚 28 | VDD — Positive supply voltage |
| 引脚 29 | VSS — Ground reference |
| 引脚 30 | RD0 — GPIO RD0 |
| 引脚 31 | RD1 — GPIO RD1 |
| 引脚 32 | RD2 — GPIO RD2 |
| 引脚 33 | RD3 — GPIO RD3 |
| 引脚 34 | RD4 — GPIO RD4 |
| 引脚 35 | RD5 — GPIO RD5 |
| 引脚 36 | RD6 — GPIO RD6 |
| 引脚 37 | RD7 — GPIO RD7 |
| 引脚 38 | RF0 — GPIO RF0 |
| 引脚 39 | RF1 — GPIO RF1 |
| 引脚 40 | RF2 — GPIO RF2 |
| 引脚 41 | RF3 — GPIO RF3 |
| 引脚 42 | RF4 — GPIO RF4 |
| 引脚 43 | RF5 — GPIO RF5 |
| 引脚 44 | RF6 — GPIO RF6 |
| 引脚 45 | RF7 — GPIO RF7 |
| 引脚 46 | OSC1/CLKIN — Crystal oscillator input or external clock |
| 引脚 47 | OSC2/CLKOUT — Crystal oscillator output or clock out |
| 引脚 48 | EP — Exposed pad (must be soldered to ground) |
典型应用
PIC18F56K42-E/PT 适用于 7 应用s: Industrial Control Panels, Capacitive Touch User Interfaces, BLDC Motor Control, Home Appliance Controllers, IoT Sensor Edge Nodes, Automotive Body and Convenience Modules, Medical Monitoring Devices.
Industrial Control Panels
The PIC18F56K42-E/PT fits industrial control panels because its 64 KB Flash accommodates full Modbus RTU or CANopen protocol stacks, while the 12-bit ADC with 35 channels reads multiple 4-20 mA sensor inputs. Hardware CIPs such as CLC and PWM run deterministic timing without CPU load, freeing the core for HMI logic. The -40C to +125C extended temperature range handles cabinet environments near motors or heaters. The exposed pad on the 48-TQFP-EP grounds the die for stable ADC reference at 5V operation.
推荐
Capacitive Touch User Interfaces
The PIC18F56K42-E/PT is well suited for capacitive touch keypads and sliders thanks to its hardware CVD module that automates charge-and-sample cycles on up to 35 channels, reducing firmware complexity. The integrated charge pump improves SNR at low VDD, enabling reliable touch through 3 mm acrylic overlays. mTouch firmware libraries from Microchip provide proven slider and wheel algorithms. The 64 KB Flash holds complete touch state machines and gesture recognition while the 4 KB SRAM buffers raw samples for noise filtering.
推荐
BLDC Motor Control
The PIC18F56K42-E/PT drives small BLDC motors in fans, pumps, and appliance drives using its 16-bit PWM with complementary outputs, dead-band control, and fault shutdown. The 64 MHz core executes field-oriented control loops within microseconds while CLC implements hardware commutation triggering without CPU intervention. The 12-bit ADC samples back-EMF at PWM boundary timing through the integrated charge pump, and the 48-TQFP-EP exposed pad dissipates the modest switching losses of gate-driver interface circuits.
推荐
Home Appliance Controllers
The PIC18F56K42-E/PT powers washing machine, dishwasher, and oven controllers where its 64 KB Flash stores state machines for multi-mode cycles, while the 4 KB EEPROM retains user settings and fault logs across power cycles. Two UART channels drive display modules and Wi-Fi/BLE modules for smart-appliance connectivity. The 12-bit ADC reads temperature, water level, and motor current sensors simultaneously, and the XLP Sleep modes with RTC draw under 1 uA for energy-star standby compliance in connected appliances.
推荐
IoT Sensor Edge Nodes
The PIC18F56K42-E/PT serves as an IoT edge node with its 64 MHz core running lightweight MQTT-SN or CoAP stacks over UART-attached modules like Wi-Fi or LoRa transceivers. XLP Sleep currents below 1 uA extend battery life in remote sensor deployments, while the 12-bit ADC samples environmental data with hardware averaging via ADC2 computation. The 1 KB EEPROM stores calibration constants and security keys without external memory.
推荐
Automotive Body and Convenience Modules
The PIC18F56K42-E/PT (extended temperature grade) targets automotive body controllers for window lifts, seat controls, mirror adjustment, and lighting modules. Its 44 I/O pins drive multiple loads directly through discrete transistors or smart drivers. LIN bus communication uses a UART plus timer for break-symbol generation, eliminating external transceivers in simple slave nodes. Hardware PWM with complementary outputs handles LED dimming and H-bridge direction control with deterministic timing.
推荐
Medical Monitoring Devices
The PIC18F56K42-E/PT fits portable medical monitoring equipment such as pulse oximeters, glucose meters, and infusion pumps where its low-power XLP operation extends battery runtime. The 12-bit ADC with hardware oversampling (ADC2) provides accurate readings from optical and electrochemical sensors. The 64 KB Flash stores calibration tables and patient session logs, while the 4 KB EEPROM retains device settings. Hardware CIPs implement safety watchdog and alarm timing independent of firmware, improving functional safety in IEC 62304-relevant designs.
推荐
推荐产品汇总
工程参考数据： PIC18F56K42-E/PT ——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 | PIC18F56K42-I/PT | PIC18F55K42-I/PT | PIC18F57K42-I/PT | PIC18F55K42T-I/MV |
|---|---|---|---|---|---|
| Package | 48-TQFP-EP (7x7 mm) | 48-TQFP-EP (7x7 mm) - same | 48-TQFP-EP (7x7 mm) - same | 48-TQFP-EP (7x7 mm) - same | 48-TQFP-EP (7x7 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 64 KB | 64 KB | 32 KB (-50%) | 64 KB | 32 KB (-50%) |
| SRAM | 4 KB | 4 KB | 2 KB (-50%) | 4 KB | 2 KB (-50%) |
| Operating Temperature | -40C to +125C (-E) | -40C to +85C (-I) | -40C to +85C (-I) | -40C to +85C (-I) | -40C to +85C (-I) |
| CPU Speed | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Supply Voltage | 2.3V to 5.5V | 2.3V to 5.5V | 2.3V to 5.5V | 2.3V to 5.5V | 2.3V to 5.5V |
| ADC | 12-bit, 35 channels | 12-bit, 35 channels | 12-bit, 35 channels | 12-bit, 35 channels | 12-bit, 35 channels |
| I/O Pins | 44 | 44 | 44 | 44 (expanded routing) | 44 |
关键差异点
- Extended temperature grade for harsh environments （对比 PIC18F56K42-I/PT)
- Maximum Flash in 48-pin K42 family （对比 PIC18F55K42-I/PT)
- Expanded peripheral routing versus 55K42 （对比 PIC18F57K42-I/PT)
设计说明
Place a 100 nF X7R decoupling capacitor within 2 mm of each VDD pin (pins 9, 28) with a wide ground via returning to the EPAD ground plane. Add a single 10 uF bulk ceramic or tantalum on the main VDD rail. The integrated charge pump requires no external components but its operation depends on clean VDD - noisy rails degrade ADC2 accuracy on lower channels. For battery-powered designs, leverage the XLP Sleep mode with RTC to achieve sub-microamp standby current.
The 48-TQFP-EP package relies on the exposed pad for both electrical ground and thermal dissipation. Stencil aperture should be split into a 50% array pattern to ensure proper solder paste release and void control. Connect the EP to a continuous ground plane on the top layer with at least 9 thermal vias (0.3 mm drill, 0.5 mm pitch) to the inner ground plane. Without proper EP soldering, junction-to-ambient thermal resistance increases and ADC readings become unstable due to die heating.
Keep traces to the MCLR/RE3 pin (pin 27) short and avoid routing noisy signals near it. The ICSP/ICD programming pins (RB6/RB7) require direct access on the PCB - do not place series resistors above 100 ohm on these lines for in-circuit debugging. For high-speed SPI or UART signals above 1 MHz, use impedance-controlled traces with reference ground, especially when routing near the ADC analog inputs to avoid digital coupling into analog readings.
Configuration bits (fuses) must be programmed before first use; leaving them at default may select the internal LF oscillator instead of the expected 64 MHz HFINTOSC, causing slow execution. The ADC2 module requires explicit channel selection and acquisition time configuration - using default values may yield inaccurate readings on high-impedance sources. The hardware CVD touch module needs calibration of the prescaler and timebase per PCB layout; reuse Microchip's mTouch framework rather than custom implementation to avoid touch sensitivity issues.
合规信息
RoHS compliant per Microchip product page. PIC18F56K42-E/PT is industrial-grade (-E) but not AEC-Q100 qualified; for AEC-Q100 automotive applications, consider PIC18F46K42-E/PTVAO or contact Microchip for Q-grade variants.