PIC18F2539T-E/SO - 8-bit 40MHz MCU, 24KB Flash, 28-SOIC | Microchip
料号： PIC18F2539T-E/SO ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.85 | $38.50 |
| 100 | $3.5 | $350.00 |
| 500 | $3.18 | $1,590.00 |
| 1,000 | $2.85 | $2,850.00 |
PIC18F2539T-E/SO 概述
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and peripheral interfaces onto one die. The PIC18F family uses an enhanced Harvard RISC architecture with 16-bit instructions and 8-bit data paths, and the PIC18F2539 specifically merges this architecture with a sophisticated motor control kernel. This kernel targets single-phase induction motor control applications, providing dedicated PWM, capture/compare, and quadrature encoder interfaces on-chip. As a member of the 8-bit MCU hierarchy, the PIC18F2539 sits between simpler PIC16F devices and the higher-end PIC24/dsPIC families.
Key features include a 10-bit ADC module (motor-control-tuned), enhanced USART, MSSP (SPI/I2C), and a 16-bit motion feedback module. The device operates from 4.2V to 5.5V with an extended industrial temperature range (-40C to +125C), suitable for harsh environments. With on-chip Flash and In-Circuit Serial Programming (ICSP), firmware updates can be performed in the field without removing the part.
Typical applications include single-phase induction motor drives, fan and pump controllers, white-goods motor boards, and HVAC damper control. The integrated motion control peripherals reduce external component count for sensorless or closed-loop BLDC/induction drive implementations.
When designing with this device, ensure decoupling capacitors are placed close to VDD/VSS pins and that the MCLR pull-up is correctly biased. The PIC18F2539 family shares its datasheet with PIC18F2439/4439/4539 variants for engineers migrating between pin counts.
This page synthesizes distributor pricing, same-package alternatives (28-SOIC), and practical design notes not found in the manufacturer datasheet summary.
直接替换替代料： PIC18F2539T-E/SO ——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： PIC18F2539T-E/SO （相同外形与封装尺寸） ——差异在于 Package, Core Architecture, Series, Mounting Type, RoHS Status.
快速对比工具——选择替代料号进行并排对比：
PIC18F2539T-I/SO
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$3.82 / 个
查看数据手册 →PIC18F2539-E/SO
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$6.1 / 个
查看数据手册 →PIC18F2439T-I/SO
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$3.81 / 个
查看数据手册 →PIC18F2539T-E/SO 最大额定值与电气特性
| Core Architecture | PIC (8-bit RISC, Harvard) |
| Series | PIC® 18F |
| Program Memory Size | 24 KB Flash (12K x 16) |
| RAM Size | 1408 bytes |
| Number of I/O Pins | 21 |
| 最大时钟频率 | 40 MHz |
| Operating Voltage | 4.2 V to 5.5 V |
| 工作温度范围 | -40 C to +125 C (Extended) |
| 封装 | 28-SOIC (0.295 inch / 7.50 mm width) |
| 安装类型 | Surface Mount (Tape and Reel) |
| Temperature Grade | Extended Industrial (E suffix) |
| Motor Control Kernel | Yes (single-phase induction motor focused) |
| Communication Interfaces | Enhanced USART, MSSP (SPI/I2C) |
| ICSP | Yes (In-Circuit Serial Programming) |
| RoHS 状态 | Compliant |
PIC18F2539T-E/SO 引脚配置
| 引脚 1 | MCLR — Master Clear (Reset) input, active low |
| 引脚 2 | RA0 — Digital I/O / analog input |
| 引脚 3 | RA1 — Digital I/O / analog input |
| 引脚 4 | RA2 — Digital I/O / analog input |
| 引脚 5 | RA3 — Digital I/O / analog input |
| 引脚 6 | RA4 — Digital I/O |
| 引脚 7 | RA5 — Digital I/O |
| 引脚 8 | RE0 — Digital I/O |
| 引脚 9 | RE1 — Digital I/O |
| 引脚 10 | RE2 — Digital I/O |
| 引脚 11 | VSS — Ground reference |
| 引脚 12 | VDD — Positive supply voltage |
| 引脚 13 | OSC1 — Crystal/clock input |
| 引脚 14 | OSC2 — Crystal/clock output |
| 引脚 15 | RC0 — Digital I/O / PWM output |
| 引脚 16 | RC1 — Digital I/O / PWM output |
| 引脚 17 | RC2 — Digital I/O / PWM output |
| 引脚 18 | RC3 — Digital I/O / PWM output |
| 引脚 19 | RD0 — Digital I/O / motion feedback |
| 引脚 20 | RD1 — Digital I/O / motion feedback |
| 引脚 21 | RD2 — Digital I/O / motion feedback |
| 引脚 22 | RD3 — Digital I/O / motion feedback |
| 引脚 23 | RC4 — Digital I/O |
| 引脚 24 | RC5 — Digital I/O |
| 引脚 25 | RC6 — Digital I/O / USART TX |
| 引脚 26 | RC7 — Digital I/O / USART RX |
| 引脚 27 | RB6 — Digital I/O / ICSP clock |
| 引脚 28 | RB7 — Digital I/O / ICSP data |
典型应用
PIC18F2539T-E/SO 适用于 6 应用s: Single-Phase Induction Motor Drive, Fan and Pump Speed Controller, White-Goods Motor Control Board, HVAC Damper and Valve Actuator, Small Appliance Control Module, Industrial Sensor and Actuator Node.
Single-Phase Induction Motor Drive
The PIC18F2539T-E/SO is purpose-built for single-phase induction motor control, integrating a 16-bit motion feedback module, programmable dead-time PWM, and a fast ADC that can sample back-EMF and current within the same PWM cycle. The 40 MHz / 10 MIPS core executes sinusoidal commutation, V/F profile, and PI current loops with cycle times well under 100 us. Its -40C to +125C extended temperature grade (E suffix) supports under-hood appliances and outdoor HVAC compressors. Place the IC close to gate-driver circuitry to keep analog feedback traces short.
推荐
Fan and Pump Speed Controller
For variable-speed fan and pump applications, the PIC18F2539T-E/SO delivers sensorless or sensored closed-loop control with its on-chip motion feedback peripheral. The 21 I/O pins accept tachometer, Hall-sensor, or back-EMF inputs while driving triac, IGBT, or MOSFET power stages. The 24KB Flash stores multiple V/F profiles and fault-handling routines. Combined with the 1408-byte RAM and PWM dead-time insertion, it replaces larger discrete analog control boards in residential fans and circulator pumps.
推荐
White-Goods Motor Control Board
Washing-machine pumps, dishwasher circulators, and refrigerator compressors benefit from the PIC18F2539T-E/SO's compact 28-SOIC footprint and on-chip motor peripherals. The 8-bit RISC core handles user-interface communication (USART), sensor acquisition (ADC), and PWM generation for brushless DC or single-phase AC motors simultaneously. With 24KB of Flash, designers can embed fault diagnostics, energy-saving profiles, and over-the-air parameter updates without external EEPROM. The industrial temperature grade supports the thermal environment inside sealed appliance cabinets.
推荐
HVAC Damper and Valve Actuator
HVAC damper and valve actuators use the PIC18F2539T-E/SO to drive small brushless DC or shaded-pole motors with precise position feedback. The 16-bit motion feedback module decodes quadrature encoders or Hall-effect sensors to track valve position, while the PWM module controls actuator torque. With 1408 bytes of RAM, the MCU maintains PID state variables and Modbus/ASCII command buffers. The extended temperature grade accommodates rooftop and basement HVAC installations.
推荐
Small Appliance Control Module
Coffee grinders, blender motors, vacuum cleaners, and similar small appliances use the PIC18F2539T-E/SO to combine motor speed control with user-interface handling. The 21 I/O pins drive segment displays, pushbuttons, and triac outputs while the integrated ADC reads motor current for stall detection. The ICSP interface allows firmware updates after assembly, which shortens time-to-market for product variants. Designers benefit from the same development toolchain (MPLAB X) used across the entire PIC18F family.
推荐
Industrial Sensor and Actuator Node
In industrial automation networks the PIC18F2539T-E/SO serves as a sensor/actuator node running on 5V industrial backplanes. Its USART and MSSP interfaces support RS-485, SPI sensor expansion, and I2C peripheral chips. The PWM and motion feedback modules can also drive small solenoid or proportional valves. The industrial temperature grade ensures operation in cabinet-mounted locations without thermal conditioning. The 24KB Flash accommodates Modbus RTU and vendor-specific protocol stacks.
推荐
推荐产品汇总
工程参考数据： PIC18F2539T-E/SO ——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 | PIC18F2539T-I/SO | PIC18F2539-E/SO | PIC18F2439T-I/SO |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (0.295 inch / 7.50 mm) | 28-SOIC (0.295 inch) - same | 28-SOIC (0.295 inch) - same | 28-SOIC (0.295 inch) - same |
| Program Memory | 24 KB Flash | 24 KB Flash | 24 KB Flash | 24 KB Flash |
| RAM | 1408 bytes | 1408 bytes | 1408 bytes | 1408 bytes |
| I/O Pins | 21 | 21 | 21 | 21 |
| Max Clock | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Operating Voltage | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V |
| Temperature Grade | Extended (-40C to +125C) | Industrial (-40C to +85C) | Extended (-40C to +125C) | Industrial (-40C to +85C) |
| Packaging Format | Tape and Reel | Tape and Reel | Tube | Tape and Reel |
关键差异点
- Integrated motor-control kernel for single-phase induction drives （对比 PIC18F2539T-I/SO)
- Extended industrial temperature grade for harsh environments （对比 PIC18F2439T-I/SO)
- Tape-and-reel packaging for high-volume assembly （对比 PIC18F2539-E/SO)
设计说明
Place a 100 nF ceramic decoupling capacitor directly between VDD (pin 12) and VSS (pin 11) of the PIC18F2539T-E/SO, with the trace length under 5 mm. Add a bulk 10 uF tantalum or ceramic capacitor on the same supply rail close to the IC. The motor-control PWM switching generates high di/dt transients; insufficient decoupling can cause the MCU to brown out during commutation events. If the AVDD/AVSS pins are present, supply them from a ferrite-filtered branch from VDD for cleaner ADC readings.
Keep analog inputs (RA0-RA5, RE0-RE2) routed away from PWM output traces (RC0-RC3) and switching node traces on the power stage. Use a ground plane split if necessary, joining at a single point near the MCU VSS pin. The 28-SOIC package has a pin pitch of 1.27 mm, which is comfortable for two-layer hand-routed boards but consider a four-layer stack-up if analog precision or PWM timing is critical. Place the crystal (or resonator) within 10 mm of OSC1/OSC2 with a guard ring tied to ground.
Do not float the MCLR pin: a 10 kohm pull-up to VDD is required for normal operation, and ICSP programming requires MCLR to be driven low via the programmer. Ensure configuration bits (CONFIG1L through CONFIG5R) are set correctly: HS oscillator for >4 MHz crystals, watchdog disabled for motor-control loops, and low-voltage programming enabled if ICSP will be used in production. Failure to set WDTE = OFF can cause nuisance resets when the motor control loop takes longer than expected during transient loads.
合规信息
RoHS and REACH compliance inferred from Microchip's standard PIC18F family declarations and distributor listings. AEC-Q100 not applicable for general industrial MCU; not automotive-qualified.
