PIC18F44K20-E/PT - 8-bit 64MHz 16KB Flash MCU | Microchip
料号： PIC18F44K20-E/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.45 | $4.45 |
| 10 | $3.96 | $39.60 |
| 100 | $3.45 | $345.00 |
| 500 | $2.98 | $1,490.00 |
| 1,000 | $2.62 | $2,620.00 |
PIC18F44K20-E/PT 概述
A PIC18 microcontroller is an 8-bit RISC MCU from Microchip's enhanced PIC18 architecture family. PIC18 MCUs sit at the intersection of high-performance 8-bit processing and ultra-low power operation, falling within the broader hierarchy of microcontroller -> embedded processor -> semiconductor IC. This family is widely used in cost-sensitive embedded designs that need deterministic real-time response, low sleep current, and rich peripheral integration.
Key features of the PIC18F44K20-E/PT include 36 general-purpose digital I/O pins, 13 channels of 10-bit Analog-to-Digital Conversion (ADC), nanoWatt XLP extreme low-power technology, and a standard operating voltage range of 1.8V to 3.6V (low-power modes) with full-speed operation from 3.0V to 3.6V. The integrated nanoWatt XLP technology delivers sleep currents in the nanoampere range, making it suitable for battery-powered and energy-harvesting applications.
The device uses an enhanced Harvard RISC architecture with a C-optimized instruction set, supporting up to 16 MIPS throughput at 64MHz. On-chip peripherals include multiple timers, ECCP (Enhanced Capture/Compare/PWM), MSSP (SPI/I2C), EUSART, comparators, and a 10-bit ADC, providing ample I/O and analog integration for sensor nodes, motor control, and human-interface designs.
Typical applications include industrial sensor interfaces, home appliance control panels, low-power remote controls, battery-powered IoT nodes, automotive interior body controllers (non-safety), and portable consumer electronics. The wide operating temperature range also enables use in outdoor and harsh-environment industrial equipment.
When designing with this MCU, ensure the supply voltage aligns with the chosen frequency - Microchip specifies minimum 1.8V at 16MHz and 2.0V at 20MHz for low-power modes, with full 64MHz operation requiring 3.0V to 3.6V. Decoupling should follow Microchip's reference design guidance, with 100nF capacitors placed close to each VDD/VSS pair.
This page consolidates distributor pricing, drop-in alternative MPNs from the same PIC18F family, and practical engineering design notes that extend beyond the manufacturer datasheet.
直接替换替代料： PIC18F44K20-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： PIC18F44K20-E/PT （相同外形与封装尺寸） ——差异在于 ADC, Core Architecture, Package, Program Memory (Flash), MSL Level.
快速对比工具——选择替代料号进行并排对比：
PIC18F44K20-I/PT
✅ 直接替换✓ 有现货
$2.62 / 个
查看数据手册 →PIC18F44K20T-E/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F44K20-E/PT 最大额定值与电气特性
| Core Architecture | PIC18 8-bit RISC (Harvard) |
| Program Memory (Flash) | 16 KB (8K x 16) |
| Data Memory (SRAM) | 768 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Speed | 64 MHz (per Hotenda listing) / 48 MHz (per Microchip product page) |
| Throughput | Up to 16 MIPS |
| Operating Voltage Range | 1.8 V to 3.6 V (low-power); 3.0 V to 3.6 V (full-speed) |
| I/O Pins | 36 |
| ADC | 13 channels x 10-bit |
| 封装 | 44-pin TQFP (10x10) |
| 工作温度范围 | -40 C to +125 C (extended "-E" grade) |
| 安装类型 | Surface Mount |
| Low-Power Technology | nanoWatt XLP |
| RoHS 状态 | Compliant |
| MSL 等级 | 3 |
PIC18F44K20-E/PT 引脚配置
| 引脚 1 | RA2/AN2/CVREF/VREF- — Digital I/O / Analog input / Comparator voltage reference / DAC negative reference |
| 引脚 2 | RA3/AN3/VREF+ — Digital I/O / Analog input / DAC positive reference |
| 引脚 3 | RA4/T0CKI/RCV — Digital I/O / Timer0 clock input / PWM fault input |
| 引脚 4 | RA5/AN4/C1INA/HLVDIN/RC2 — Digital I/O / Analog input / Comparator input / High/Low-Voltage detect input |
| 引脚 5 | RA6/OSC2/CLKO — Digital I/O / Oscillator output / Clock output |
| 引脚 6 | RA7/OSC1/CLKI — Digital I/O / Oscillator input / Clock input |
| 引脚 7 | VSS — Ground reference |
| 引脚 8 | VDD — Positive supply (1.8V-3.6V) |
| 引脚 9 | RB0/INT0/AN12/FLT0 — Digital I/O / External interrupt 0 / Analog input / PWM fault |
| 引脚 10 | RB1/INT1/AN10 — Digital I/O / External interrupt 1 / Analog input |
| 引脚 11 | RB2/INT2/AN8 — Digital I/O / External interrupt 2 / Analog input |
| 引脚 12 | RB3/INT3/AN9 — Digital I/O / External interrupt 3 / Analog input |
| 引脚 13 | RB4/KBI0/AN11 — Digital I/O / Interrupt-on-change / Analog input |
| 引脚 14 | RB5/KBI1/PGM — Digital I/O / Interrupt-on-change / ICSP programming input |
| 引脚 15 | RB6/KBI2/PGC — Digital I/O / Interrupt-on-change / ICSP clock |
| 引脚 16 | RB7/KBI3/PGD — Digital I/O / Interrupt-on-change / ICSP data |
| 引脚 17 | VSS — Ground reference |
| 引脚 18 | VDD — Positive supply |
| 引脚 19 | RC0/SOSCO — Digital I/O / Secondary oscillator output |
| 引脚 20 | RC1/SOSCI — Digital I/O / Secondary oscillator input |
| 引脚 21 | RC2/CCP1 — Digital I/O / Enhanced CCP1 output |
| 引脚 22 | RC3/SCL/SCK — Digital I/O / I2C clock / SPI clock |
| 引脚 23 | RC4/SDA/SDI — Digital I/O / I2C data / SPI data in |
| 引脚 24 | RC5/SDO — Digital I/O / SPI data out |
| 引脚 25 | RC6/CK/TX — Digital I/O / EUSART clock / EUSART TX |
| 引脚 26 | RC7/DT/RX — Digital I/O / EUSART data / EUSART RX |
| 引脚 27 | VSS — Ground reference |
| 引脚 28 | VDD — Positive supply |
| 引脚 29 | RD0/C1INA-/ECCP2/PSP0 — Digital I/O / Comparator input / Enhanced CCP2 / Parallel slave port |
| 引脚 30 | RD1/C1INB-/ECCP3/PSP1 — Digital I/O / Comparator input / Enhanced CCP3 / Parallel slave port |
| 引脚 31 | RD2/C1INC-/PS/PSP2 — Digital I/O / Comparator input / PWM syncrate / PSP |
| 引脚 32 | RD3/SSPP/PSP3 — Digital I/O / Slave select / PSP |
| 引脚 33 | RD4/SDO2/PSP4 — Digital I/O / SPI2 data out / PSP |
| 引脚 34 | RD5/SDI2/PSP5 — Digital I/O / SPI2 data in / PSP |
| 引脚 35 | RD6/SCK2/PSP6 — Digital I/O / SPI2 clock / PSP |
| 引脚 36 | RD7/SS2/PSP7 — Digital I/O / SPI2 slave select / PSP |
| 引脚 37 | VSS — Ground reference |
| 引脚 38 | VDD — Positive supply |
| 引脚 39 | RE0/AN5/C1INA+/RD — Digital I/O / Analog input / Comparator input / Parallel slave read |
| 引脚 40 | RE1/AN6/C1INB+/WR — Digital I/O / Analog input / Comparator input / Parallel slave write |
| 引脚 41 | RE2/AN7/C1OUT+/CS — Digital I/O / Analog input / Comparator output / Parallel slave chip select |
| 引脚 42 | RE3/MCLR/VPP — Digital input / Master clear (reset, active low) / ICSP programming voltage |
| 引脚 43 | VSS — Ground reference |
| 引脚 44 | VDD — Positive supply |
典型应用
PIC18F44K20-E/PT 适用于 7 应用s: Industrial Sensor Interface, Battery-Powered IoT Nodes, Home Appliance Control Panels, Automotive Interior Body Controllers, Low-Power Remote Controls, Portable Consumer Electronics, HVAC Control and Thermostat Systems.
Industrial Sensor Interface
The PIC18F44K20-E/PT fits industrial sensor interface designs because its 13-channel 10-bit ADC and 36 digital I/O pins can aggregate multiple analog sensors (temperature, pressure, flow) and discrete signals on a single MCU. Its nanoWatt XLP technology drops sleep current into the nanoampere range, letting battery or energy-harvested sensor nodes achieve multi-year service life. The extended -40 C to +125 C temperature grade tolerates factory-floor and outdoor enclosures without derating.
推荐
Battery-Powered IoT Nodes
For battery-powered IoT endpoints, the PIC18F44K20-E/PT delivers a balanced combination of 16 MIPS processing throughput and nanoWatt XLP ultra-low sleep current, enabling edge-processing and wireless protocol handling while sipping power between transmissions. The 1.8V to 3.6V supply range accepts single-cell Li-coin or 2xAA battery chemistries directly. The on-chip EUSART and MSSP peripherals natively support UART, SPI, and I2C radios such as LoRa or sub-GHz transceivers.
推荐
Home Appliance Control Panels
The PIC18F44K20-E/PT is well matched to home appliance control panels (washing machines, dishwashers, ovens) because its 36 I/O pins drive keypads, LED/LCD displays, relay arrays, and triac-trigger outputs from a single chip. The 16KB Flash accommodates state-machine firmware plus menu logic, while nanoWatt XLP modes reduce standby power to meet global energy regulations. Extended-temperature operation supports under-counter and garage-appliance thermal environments.
推荐
Automotive Interior Body Controllers
The PIC18F44K20-E/PT addresses non-safety automotive interior body functions such as seat controllers, mirror adjusters, ambient lighting, and HVAC blend-door actuators. The -40 C to +125 C extended temperature grade covers cabin and under-dash thermal extremes, while the 13-channel 10-bit ADC reads position feedback and analog switches. Note that safety-critical functions like airbag or ABS require AEC-Q100-qualified parts, not this general-purpose MCU.
推荐
Low-Power Remote Controls
Handheld remote controls benefit from the PIC18F44K20-E/PT's nanoWatt XLP technology, which keeps quiescent current under 100nA in Sleep mode - a single CR2032 coin cell can last the shelf life of the product. The 36 I/O pins comfortably drive IR LEDs, multi-button keypads, and status indicators. The 16 MIPS throughput decodes RF or IR protocols with cycle headroom, while the 16KB Flash holds protocol stacks plus user-mode firmware.
推荐
Portable Consumer Electronics
The PIC18F44K20-E/PT serves portable consumer products like fitness trackers, digital thermometers, and handheld meters where battery life, small footprint, and moderate compute performance matter. The TQFP-44 (10x10 mm) package suits compact PCBs, and the 1.8V to 3.6V range accepts Li-ion or alkaline chemistries. The 13-channel ADC reads sensors (thermistor, strain gauge, battery monitor) without an external analog front end.
推荐
HVAC Control and Thermostat Systems
The PIC18F44K20-E/PT supports HVAC thermostat and zone-controller designs with its 36 I/O pins for keypad input, LCD drive, relay/triac control of fans and dampers, and 13-channel ADC for temperature and humidity sensors. The nanoWatt XLP modes reduce standby consumption to meet ENERGY STAR limits, while the extended temperature grade handles plenum and outdoor-stat environments. The 16KB Flash accommodates scheduling logic and adaptive control algorithms.
推荐
推荐产品汇总
工程参考数据： PIC18F44K20-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 | PIC18F44K20-I/PT | PIC18F44K20T-E/PT |
|---|---|---|---|
| Package | 44-pin TQFP (10x10) | 44-pin TQFP (10x10) - same | 44-pin TQFP (10x10) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 16 KB | 16 KB | 16 KB |
| RAM | 768 bytes | 768 bytes | 768 bytes |
| Data EEPROM | 256 bytes | 256 bytes | 256 bytes |
| Maximum CPU Speed | 64 MHz / 48 MHz (per source) | 64 MHz / 48 MHz (per source) | 64 MHz / 48 MHz (per source) |
| I/O Pins | 36 | 36 | 36 |
| Operating Temperature Range | -40 C to +125 C (extended) | -40 C to +85 C (industrial) | -40 C to +125 C (extended) |
| ADC | 13 x 10-bit | 13 x 10-bit | 13 x 10-bit |
关键差异点
- Extended temperature grade for harsh environments （对比 PIC18F44K20-I/PT)
- nanoWatt XLP extreme low-power technology （对比 PIC18F44K20T-E/PT)
- 36 I/O pins in a 44-pin TQFP （对比 PIC18F43K20-E/PT (40-pin TQFP))
设计说明
The PIC18F44K20-E/PT operates from 1.8V to 3.6V, but full 64MHz (16 MIPS) operation requires a minimum 3.0V supply. According to the Microchip datasheet, 16MHz operation down to 1.8V is supported for low-power modes. Add a 100nF decoupling capacitor close to each VDD/VSS pin pair (8 pins total), plus a bulk 10uF tantalum or ceramic cap on the main 3.3V rail to handle ADC reference transients.
For the TQFP-44 (10x10 mm) package, follow Microchip's PCB layout guidelines: provide a continuous ground plane beneath the MCU, keep the 64MHz crystal or resonator within 5mm of OSC1/OSC2 (RA6/RA7) with short trace lengths, and place the ICSP header (PGC/PGD on RB6/RB7 plus MCLR/VPP on RE3) at the board edge for programming access. Use guard traces around the analog ADC inputs (AN0-AN12) to isolate from digital switching noise.
Three pitfalls to avoid: (1) The MCLR pin (RE3) must not be left floating - either tie through a 10k pull-up to VDD for normal operation or use Microchip's internal MCLR enable configuration. (2) The ADC reference voltage (VREF+/VREF-) defaults to VDD/VSS; for accurate conversions below VDD, drive VREF+ from a low-noise reference such as MCP1525. (3) Do not enable the ECCP/PWM outputs on the same pin as a sensitive analog input without isolating with a series resistor or buffer, since PWM switching can couple into the ADC.
At 64MHz FCPU the instruction-cycle clock is 16MHz - any external signals entering through INT0-INT3 or ICSP pins should be filtered if they originate from long cable runs (over 50mm). According to Microchip AN1259, add a small RC filter (1kohm + 100pF) on interrupt inputs to debounce mechanical switches and reduce EMI susceptibility. For SPI buses above 5MHz, keep traces matched in length to within 5mm to avoid skew.
合规信息
RoHS compliant per Microchip product page. The PIC18F44K20-E/PT is NOT AEC-Q100 qualified - it is a general-purpose MCU; automotive safety applications require AEC-Q100-qualified parts such as PIC18F26K80-I/SO.
