PIC18F26K40-E/ML - 8-Bit 64MHz 64KB Flash MCU | Microchip
料号： PIC18F26K40-E/ML ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.975 | $1.98 |
| 10 | $1.78 | $17.80 |
| 100 | $1.52 | $152.00 |
| 500 | $1.31 | $655.00 |
| 1,000 | $1.15 | $1,150.00 |
| 3,000 | $1.02 | $3,060.00 |
PIC18F26K40-E/ML 概述
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and programmable I/O. PIC18 microcontrollers use an enhanced 8-bit RISC architecture that sits between simple 8-bit MCUs and 32-bit ARM Cortex-M cores in performance/complexity. They are widely used in cost-sensitive embedded designs where deterministic behavior, low power, and rich analog integration matter more than raw MIPS.
Key features include 64MHz core speed, 10-bit ADC with computation (ADC2), 5-bit DAC, comparators, PWM, CCP, CWG, HLT, WWDT, and communication peripherals such as EUSART, SPI, and I2C. The device also provides Peripheral Pin Select (PPS) for flexible pin assignment and operates across 2.3V-5.5V with low-power sleep modes.
The architecture combines a Harvard-style CPU with self-programmable Flash and Hardware Limiter Timer, ideal for functional-safety and motor-control loops. The CWG (Complementary Waveform Generator) and Zero-Cross Detect (ZCD) peripherals enable advanced power-conversion topologies without burdening the core.
Typical applications include consumer appliance control, LED lighting, low-power sensor nodes, motor control, USB-CDC bridges, and industrial IoT endpoints where low sleep current and 5V I/O tolerance simplify design.
When designing with this device, leverage CIPs to keep the CPU asleep longer for lower average current, and reserve PPS routing for SPI/I2C remapping when PCB layout forces pin reassignment.
直接替换替代料： PIC18F26K40-E/ML ——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： PIC18F26K40-E/ML （相同外形与封装尺寸） ——差异在于 Operating Temperature, Package, ADC, DAC, Program Memory (Flash).
快速对比工具——选择替代料号进行并排对比：
PIC18F26K40-I/ML
✅ 直接替换✓ 有现货
$1.78 / 个
查看数据手册 →PIC18F26K40-E/MLVAO
✅ 直接替换✓ 有现货
$1.74 / 个
查看数据手册 →PIC18LF26K40-I/ML
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F26K40-E/SP
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F26K40-E/SO
✅ 直接替换✓ 有现货
$1.52 / 个
查看数据手册 →PIC18F26K40-E/SS
✅ 直接替换✓ 有现货
$1.65 / 个
查看数据手册 →PIC18F26K40-E/ML 最大额定值与电气特性
| Core Architecture | PIC18 8-bit RISC |
| Program Memory (Flash) | 64 KB (32K x 16) |
| RAM | 4 KB |
| EEPROM | 256 B |
| Maximum CPU Speed | 64 MHz |
| Operating Voltage | 2.3 V to 5.5 V |
| 封装 | 28-QFN (6x6 mm) |
| I/O Pins | 25 |
| ADC | 10-bit ADC2 |
| DAC | 5-bit DAC |
| Comparators | Yes |
| PWM Channels | PWM, CCP, CWG |
| Communication | EUSART, SPI, I2C |
| Special Features | XLP, WWDT, CRC/SCAN, ZCD, PPS, HLT |
| 工作温度 | -40C to +125C |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
| MSL 等级 | 3 (168 hours) |
PIC18F26K40-E/ML 引脚配置
| 引脚 1 | RA2 — Port A digital I/O / analog input |
| 引脚 2 | RA3 — Port A digital I/O / analog input |
| 引脚 3 | RA4 — Port A digital I/O / analog input |
| 引脚 4 | RA5 — Port A digital I/O / analog input |
| 引脚 5 | VSS — Ground reference |
| 引脚 6 | RA7 — Port A digital I/O / analog input |
| 引脚 7 | RA6 — Port A digital I/O / analog input |
| 引脚 8 | RC0 — Port C digital I/O / analog input |
| 引脚 9 | RC1 — Port C digital I/O / analog input |
| 引脚 10 | RC2 — Port C digital I/O / analog input |
| 引脚 11 | RC3 — Port C digital I/O / analog input |
| 引脚 12 | RC4 — Port C digital I/O / analog input |
| 引脚 13 | RC5 — Port C digital I/O / analog input |
| 引脚 14 | RC6 — Port C digital I/O / analog input |
| 引脚 15 | RC7 — Port C digital I/O / analog input |
| 引脚 16 | VSS — Ground reference |
| 引脚 17 | RB7 — Port B digital I/O / analog input |
| 引脚 18 | RB6 — Port B digital I/O / analog input |
| 引脚 19 | RB5 — Port B digital I/O / analog input |
| 引脚 20 | RB4 — Port B digital I/O / analog input |
| 引脚 21 | RB3 — Port B digital I/O / analog input |
| 引脚 22 | RB2 — Port B digital I/O / analog input |
| 引脚 23 | RB1 — Port B digital I/O / analog input |
| 引脚 24 | RB0 — Port B digital I/O / analog input |
| 引脚 25 | VDD — Positive supply voltage |
| 引脚 26 | RA1 — Port A digital I/O / analog input |
| 引脚 27 | RA0 — Port A digital I/O / analog input |
| 引脚 28 | VDD — Positive supply voltage |
典型应用
PIC18F26K40-E/ML 适用于 6 应用s: Consumer Appliance Control, LED Lighting Drivers, Low-Power IoT Sensor Nodes, Small Motor Control (BLDC/Fan), Industrial Control Modules, Automotive Body Electronics.
Consumer Appliance Control
The PIC18F26K40-E/ML is ideal for consumer appliance control boards such as washing machines, dishwashers, and microwave ovens. Its 64KB Flash accommodates state-machine firmware plus user-interface code, while the CWG and PWM peripherals drive triac-controlled AC loads and brushless DC motors. The 5V I/O tolerance interfaces directly to legacy triac drivers and zero-cross detectors without level shifters, reducing BOM cost. XLP sleep modes below 100 nA enable Energy Star standby compliance, and the 10-bit ADC2 reads NTC temperature sensors for safety cutoffs. Compared to 32-bit MCUs, the PIC18 core offers deterministic interrupt latency critical for appliance safety standards.
推荐
LED Lighting Drivers
The PIC18F26K40-E/ML excels in LED lighting applications including architectural dimmers, RGBW controllers, and horticultural fixtures. Its CWG peripheral generates complementary PWM outputs for synchronous buck converter FET drivers, while ZCD synchronizes dimming to AC line frequency for flicker-free TRIAC dimmer compatibility. The 5-bit DAC provides analog dimming reference for constant-current LED drivers, and 25 I/O pins handle multiple LED channels plus DMX-512 or DALI communication via EUSART. EEPOM stores calibration data, and PPS allows SPI/I2C remapping when routing high-current traces forces pin reassignment.
推荐
Low-Power IoT Sensor Nodes
The PIC18F26K40-E/ML is well-suited for battery-powered wireless sensor endpoints monitoring temperature, humidity, or vibration. XLP technology with sleep currents below 100 nA extends coin-cell life to multiple years, and Core Independent Peripherals (CIPs) like CRC/SCAN verify sensor data without waking the CPU. The EUSART interfaces directly to sub-GHz transceivers or BLE modules, while 64KB Flash stores application code plus OTA bootloader for field upgrades. ADC2 with computation averages multiple samples for noise-immune readings, and PPS lets designers optimize PCB antenna keep-out zones by remapping SPI lines.
推荐
Small Motor Control (BLDC/Fan)
The PIC18F26K40-E/ML drives small brushless DC motors in fans, pumps, and PC case cooling. The CWG generates six-step or FOC commutation signals with hardware dead-band insertion, and the QEI peripheral module reads Hall sensors or back-EMF for closed-loop speed control. 64MHz CPU speed executes field-oriented control loops at 16 kHz PWM, while the comparator protects against shoot-through faults. Compared to dedicated motor controllers, the PIC18F26K40-E/ML integrates communications (UART/SPI/I2C) for Modbus or CAN bridging without external ASICs, reducing system cost.
推荐
Industrial Control Modules
The PIC18F26K40-E/ML serves in industrial PLC expansion modules, signal conditioners, and process-control transmitters. Its 5V tolerance connects directly to 4-20 mA current loops and 24V sensor bridges via external resistors, while 10-bit ADC2 with computation handles ratiometric measurements with auto-zero calibration. The EUSART supports RS-485 Modbus RTU with hardware address detection, and 256B EEPROM stores calibration constants and Modbus registers. PPS routes SPI/I2C to optimal PCB locations when optocouplers or isolators constrain pin choices.
推荐
Automotive Body Electronics
The PIC18F26K40-E/ML powers body-control modules for window lifters, seat controllers, and interior lighting. Its extended -40C to +125C temperature range plus 5V tolerance suits 12V automotive bus environments, while CWG drives H-bridge MOSFETs with hardware dead-band preventing shoot-through. LIN-compatible EUSART interfaces to body network, and ZCD synchronizes PWM to electrical noise for EMC compliance. For AEC-Q100 qualified variants, designers select the PIC18F26K40-E/MLVAO suffix which shares identical firmware and pinout.
推荐
推荐产品汇总
工程参考数据： PIC18F26K40-E/ML ——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 | PIC18F26K40-I/ML | PIC18F26K40-E/MLVAO | PIC18LF26K40-I/ML | PIC18F26K40-E/SP |
|---|---|---|---|---|---|
| Package | 28-QFN (6x6) | 28-QFN (6x6) - same | 28-QFN (6x6) - same | 28-QFN (6x6) - same | 28-SPDIP - same pinout |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | |
| Operating Temperature | -40C to +125C | -40C to +85C | -40C to +125C (AEC-Q100) | -40C to +85C | |
| Operating Voltage | 2.3V to 5.5V | 2.3V to 5.5V | 2.3V to 5.5V | 1.8V to 3.6V | |
| Flash Memory | 64 KB | 64 KB | 64 KB | 64 KB | |
| RAM | 4 KB | 4 KB | 4 KB | 4 KB | |
| EEPROM | 256 B | 256 B | 256 B | 256 B | |
| Automotive Qualified | No (extended temp) | No (industrial) | Yes (AEC-Q100) | No (industrial) |
关键差异点
- Core Independent Peripherals reduce CPU wake-ups （对比 PIC18F26K22-I/ML)
- 5V tolerance simplifies industrial interfaces （对比 PIC18LF26K40-I/ML)
- Extended temperature range supports harsh environments （对比 PIC18F26K40-I/ML)
设计说明
The PIC18F26K40-E/ML supports XLP sleep modes with currents below 100 nA when properly configured. Disable unused peripherals via PMD (Peripheral Module Disable) registers to achieve lowest sleep current. Use the RTC with external 32.768 kHz crystal for periodic wake-up; avoid WDT-only wake-up when timing precision matters. Estimated: with all peripherals disabled and Sleep mode entered, typical IDD is ~50 nA at 3V.
The 28-QFN package has an exposed thermal pad (EP) that MUST be soldered to the PCB ground plane for proper heat dissipation and electrical performance. Place at least 4 thermal vias in the EP land pattern connecting to internal ground planes. Place decoupling capacitors (100 nF ceramic) on both VDD pins (25 and 28) within 3 mm of the package, plus a bulk 10 uF tantalum or ceramic near the supply entry.
Do not confuse the PIC18F26K40 (5V) with PIC18LF26K40 (3.3V max). Operating the LF variant above 3.6V causes permanent damage. Configure PPS carefully: some peripherals lock pin selections at startup; remapping mid-runtime requires unlocking the PPS registers via the IOLOCK bit sequence. When migrating from PIC18F26K22, verify ADC2 register map differs - existing code requires recompilation.
合规信息
RoHS and REACH compliant per Microchip product page. Standard variant is not AEC-Q100 qualified; choose PIC18F26K40-E/MLVAO for automotive applications.
