PIC18F46K42T-I/MV - 8-bit 64MHz MCU 64KB Flash | Microchip
料号： PIC18F46K42T-I/MV ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.5 | $4.50 |
| 10 | $4.05 | $40.50 |
| 100 | $3.6 | $360.00 |
| 500 | $3.2 | $1,600.00 |
| 1,000 | $2.85 | $2,850.00 |
PIC18F46K42T-I/MV 概述
An 8-bit microcontroller (MCU) is a single-chip processor with an 8-bit data bus, optimized for deterministic real-time control at low power and modest cost. Within the embedded hierarchy, an 8-bit MCU sits below 16-bit and 32-bit MCUs in computational throughput but above discrete logic in functional integration. The PIC18 family uses a Harvard RISC architecture with hardware multiplier, intended for mixed-signal embedded designs that demand small code footprint, low active and sleep currents, and rich on-chip peripherals.
Key features of this part include the 12-bit ADC2 (automated averaging, burst-averaging, threshold-triggered acquisition), 10-bit PWM with edge alignment, complementary waveform generation and variable dead-band, plus multiple communication peripherals: UART with protocol support, SPI, I2C with SMBus/PMBus compatibility, and CAN-FD ready I/O. The device also implements Configurable Logic Cells (CLC), a Peripheral Pin Select (PPS) matrix, and zero-cross detection on select pins.
Architecturally, the K42 family extends the K40 line with hardware DMA, expanded CLC blocks, more vectored interrupt sources, and Memory Access Partitioning for bootloader/IP protection. The XLP core supports nanoWatt XLP sleep currents with multiple low-power modes (Sleep, Idle, Doze, PMD), allowing the device to consume microamps in standby while peripherals continue to operate via DMA.
Typical applications include industrial sensor nodes, low-power IoT edge devices, automotive body and HVAC controls (non-safety), home appliances, consumer HMI panels, and USB-to-UART bridges. The wide 2.3V to 5.5V VDD range and 64MHz performance also make it suitable for brushed DC motor control and small BLDC commutation loops.
When designing with this MCU, enable the Memory Access Partitioning early to lock bootloader regions, place the decoupling capacitor network (100nF + 10uF bulk) within 3mm of VDD/AVDD, and verify the PPS mapping for your chosen pinout. The UQFN-40 thermal pad must be soldered to a continuous ground pour for specified electrical and thermal performance.
This page synthesizes distributor pricing, parametric alternatives, and practical design notes not found in the manufacturer datasheet, providing a side-by-side comparison against same-family K40/K42 MCUs and cross-vendor 8-bit options.
直接替换替代料： PIC18F46K42T-I/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： PIC18F46K42T-I/MV （相同外形与封装尺寸） ——差异在于 Package, Communication, Comparators, DAC, Operating Temperature.
快速对比工具——选择替代料号进行并排对比：
PIC18F46K42-I/MV
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F46K42T-I/ML
✅ 直接替换✓ 有现货
$2.04 / 个
查看数据手册 →PIC18F46K40T-I/MV
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F45K42T-I/ML
✅ 直接替换✓ 有现货
$1.75 / 个
查看数据手册 →PIC18F46K22-I/MV
✅ 直接替换✓ 有现货
$2.1 / 个
查看数据手册 →PIC18F46K42T-I/MV 最大额定值与电气特性
| Core Architecture | PIC18 (Harvard RISC, 8-bit data, 16-bit instruction) |
| Maximum CPU Frequency | 64 MHz |
| Performance | 16 MIPS (64 MHz) |
| Program Flash | 64 KB (32K x 16 words) |
| SRAM | 4 KB |
| EEPROM | 1 KB |
| 封装 | 40-pin UQFN (MV) 5x5 mm |
| Supply Voltage (VDD) | 2.3 V to 5.5 V |
| ADC | 12-bit ADC2 with Computation, up to 35 channels |
| DAC | 5-bit DAC, 8-bit DAC with buffered output |
| Comparators | Up to 3 (selectable references) |
| PWM Outputs | Up to 3 CCP/ECCP, 16-bit PWM with complementary outputs |
| Communication | UART, SPI, I2C (SMBus/PMBus), CAN-FD ready I/O |
| DMA | 4 channels |
| 工作温度 | -40C to +85C (Industrial) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant (lead-free per Microchip product page) |
PIC18F46K42T-I/MV 引脚配置
| 引脚 1 | RA0/ANA0/IN0+ — Analog/Digital I/O, op-amp input |
| 引脚 2 | RA1/ANA1/IN0- — Analog/Digital I/O, op-amp input |
| 引脚 3 | RA2/ANA2 — Analog/Digital I/O |
| 引脚 4 | RA3/ANA3/VREF+ — Analog/Digital I/O, ADC positive reference |
| 引脚 5 | RA4/ANA4 — Analog/Digital I/O |
| 引脚 6 | RA5/ANA5 — Analog/Digital I/O |
| 引脚 7 | RA6 — Digital I/O |
| 引脚 8 | RA7 — Digital I/O |
| 引脚 9 | VSS — Ground |
| 引脚 10 | VDD — Positive supply |
| 引脚 11 | RB0/ANB0/ZCD — Analog/Digital I/O, zero-cross detect |
| 引脚 12 | RB1/ANB1 — Analog/Digital I/O |
| 引脚 13 | RB2/ANB2 — Analog/Digital I/O |
| 引脚 14 | RB3/ANB3 — Analog/Digital I/O |
| 引脚 15 | RB4/ANB4 — Analog/Digital I/O |
| 引脚 16 | RB5/ANB5 — Analog/Digital I/O, ICSP clock |
| 引脚 17 | RB6/ICSPCLK — ICSP clock, digital I/O |
| 引脚 18 | RB7/ICSPDAT — ICSP data, digital I/O |
| 引脚 19 | RC0/ANC0 — Analog/Digital I/O |
| 引脚 20 | RC1/ANC1 — Analog/Digital I/O |
| 引脚 21 | RC2/ANC2 — Analog/Digital I/O |
| 引脚 22 | RC3/ANC3 — Analog/Digital I/O |
| 引脚 23 | RC4/ANC4 — Analog/Digital I/O |
| 引脚 24 | RC5 — Digital I/O |
| 引脚 25 | RC6 — Digital I/O |
| 引脚 26 | RC7 — Digital I/O |
| 引脚 27 | VSS — Ground |
| 引脚 28 | VDD — Positive supply |
| 引脚 29 | RD0 — Digital I/O, PPS-mappable |
| 引脚 30 | RD1 — Digital I/O, PPS-mappable |
| 引脚 32 | RD2 — Digital I/O, PPS-mappable |
| 引脚 31 | RD3 — Digital I/O, PPS-mappable |
| 引脚 33 | RD4 — Digital I/O, PPS-mappable |
| 引脚 34 | RD5 — Digital I/O, PPS-mappable |
| 引脚 35 | RD6 — Digital I/O, PPS-mappable |
| 引脚 36 | RD7 — Digital I/O, PPS-mappable |
| 引脚 37 | RE0 — Digital I/O |
| 引脚 38 | RE1 — Digital I/O |
| 引脚 39 | RE2 — Digital I/O |
| 引脚 40 | RE3 — Digital I/O |
典型应用
PIC18F46K42T-I/MV 适用于 7 应用s: Industrial Sensor Hubs, Low-Power IoT Edge Nodes, Home Appliance Control Boards, Consumer HMI Panels, USB-to-UART Bridges, Brushed DC Motor Control, Battery-Powered Data Loggers.
Industrial Sensor Hubs
The PIC18F46K42T-I/MV integrates 64KB Flash and 12-bit ADC2 to aggregate multiple analog and digital sensor inputs in industrial monitoring hubs. Its 4KB SRAM buffers burst samples while DMA moves data without CPU wake-up, reducing power. The 40-pin UQFN footprint exposes 35+ ADC channels via Peripheral Pin Select, allowing multiple thermocouple or 4-20mA inputs on a single chip.
推荐
Low-Power IoT Edge Nodes
NanoWatt XLP sleep modes allow the PIC18F46K42T-I/MV to drop below 1uA in standby while CLC and DMA continue sensor sampling. The 4KB SRAM supports modest protocol stacks, and 64KB Flash holds application plus OTA bootloader partitioned via MAP. The wide 2.3V-5.5V supply range simplifies battery or USB-powered designs.
推荐
Home Appliance Control Boards
The 16-bit PWM with complementary outputs and dead-band control makes the PIC18F46K42T-I/MV a fit for brushed DC and small BLDC motor drivers in washing machines, dishwashers, and HVAC actuators. The integrated comparators handle zero-cross detection and overcurrent sensing. Operating from 2.3V-5.5V tolerates noisy rectified mains rails after filtering.
推荐
Consumer HMI Panels
PWM-driven LED dimming, CLC-implemented keypad scanning, and the 12-bit ADC2 for capacitive touch via an analog frontend all fit in one PIC18F46K42T-I/MV. The 4KB SRAM drives small graphical LCDs with frame buffers. MAP protects vendor-defined UI assets in Flash from accidental overwrites by user code.
推荐
USB-to-UART Bridges
The PIC18F46K42T-I/MV's UART and DMA pair well with external USB-to-serial bridges, allowing reliable low-latency data exchange with PC hosts. The 64KB Flash supports flexible command-set firmware, while MAP isolates bootloader for field-upgradable bridges. PPS remaps UART to any I/O pin, easing PCB routing.
推荐
Brushed DC Motor Control
With 16 MIPS, the PIC18F46K42T-I/MV closes current and speed loops fast enough for brushed DC motor drives under 500W. Its 3 ECCP modules generate complementary PWM with hardware dead-band, while analog comparators deliver cycle-by-cycle current limiting. The 5x5mm UQFN keeps the BOM compact for space-constrained motor boards.
推荐
Battery-Powered Data Loggers
Combining 1KB EEPROM for parameter storage, 4KB SRAM for sample buffering, and nanoWatt XLP sleep modes, the PIC18F46K42T-I/MV suits portable loggers sampling sensors hourly or daily. The ADC2's burst-averaging mode lowers noise on battery voltage measurements, while DMA offloads writes so the CPU can stay in sleep.
推荐
推荐产品汇总
工程参考数据： PIC18F46K42T-I/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 | PIC18F46K42-I/MV | PIC18F46K42T-I/ML | PIC18F46K40T-I/MV | PIC18F45K42T-I/ML | PIC18F46K22-I/MV |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 40-pin UQFN (MV) 5x5 | 40-pin UQFN (MV) 5x5 - same | 44-pin QFN (ML) 8x8 | 40-pin UQFN (MV) 5x5 - same | 44-pin QFN (ML) 8x8 | 40-pin UQFN (MV) 5x5 - same |
| Max CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Flash | 64 KB | 64 KB | 64 KB | 64 KB | 32 KB | 64 KB |
| SRAM | 4 KB | 4 KB | 4 KB | 4 KB | 2 KB | 3.8 KB |
| EEPROM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| DMA | Yes (4 channels) | Yes (4 channels) | Yes (4 channels) | No | Yes (4 channels) | No |
| Memory Access Partition (MAP) | Yes | Yes | Yes | No | Yes | No |
| ADC | 12-bit ADC2 with computation | 12-bit ADC2 with computation | 12-bit ADC2 with computation | 10-bit ADC | 12-bit ADC2 with computation | 10-bit ADC |
| Operating Voltage | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V |
关键差异点
- Integrated DMA controller （对比 PIC18F46K40T-I/MV)
- Memory Access Partitioning (MAP) （对比 PIC18F46K40T-I/MV)
- 12-bit ADC2 with Computation （对比 PIC18F46K22-I/MV)
设计说明
Place a 100nF X7R ceramic capacitor within 3mm of each VDD/AVDD pin pair, plus a shared 10uF bulk on the main VDD rail. The UQFN-40 thermal pad must be soldered to a continuous ground pour of at least 4 vias in a 0.5mm pitch grid for specified thermal and electrical performance. Avoid routing high-speed digital signals under the exposed pad to prevent ground bounce coupling.
Do not enable Memory Access Partitioning (MAP) until the bootloader is fully validated, as a misconfigured partition table can lock out ICSP. Confirm the PPS mapping matches your schematic before generating code - remapping UART TX to the wrong pin is a common boot-blocking mistake. AVDD must be tied to VDD or driven by a low-impedance source within 0.3V for ADC2 accuracy.
Use the nanoWatt XLP sleep modes (Sleep, Idle, Doze) to achieve <1uA standby. Estimated: at VDD=3.3V with all peripherals disabled, the K42 sleep current is typically 50-200nA per Microchip typical characteristics, but verify on the bench for your firmware build because GPIO states and pull-ups directly affect quiescent draw. DMA can service sensors without waking the CPU.
Keep ADC analog traces short and away from PWM and switching traces. Use a guard ring tied to AVSS around analog inputs to reduce digital coupling. If using the internal FVR as ADC reference, route the FVR bypass capacitor directly to AVSS. The 12-bit ADC2 retains 1 LSB accuracy only with proper input RC impedance matching.
合规信息
RoHS compliant and lead-free per Microchip product page and YIC Electronics listing. Not AEC-Q100 qualified - automotive applications require the -I/MVAO or -E/MVAO variants. Halogen-free status not explicitly stated in provided data.
