PIC18LF2523T-I/ML - 8-bit 32KB Flash MCU, 40MHz, QFN-28 | Microchip
料号： PIC18LF2523T-I/ML ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.62 | $4.62 |
| 10 | $4.18 | $41.80 |
| 100 | $3.71 | $371.00 |
| 500 | $3.32 | $1,660.00 |
| 1,000 | $2.95 | $2,950.00 |
PIC18LF2523T-I/ML 概述
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, plus peripherals such as ADCs, timers, communication interfaces, and I/O ports into one package. Within the broader taxonomy, the PIC18LF2523 is an 8-bit CISC-architecture MCU in the PIC18 family, which sits under Microchip's 8-bit MCU portfolio alongside PIC10/12/16 devices, and ultimately under the wider category of microcontrollers and embedded processing. LF variants specifically denote low-voltage Flash parts optimized for operation down to 2.0V, where F parts run from 4.2V to 5.5V.
Key features include a 10-bit ADC with up to 12 channels, multiple communication peripherals (UART, SPI, I2C), enhanced Capture/Compare/PWM (ECCP) modules, and nanoWatt Technology for low-power sleep modes consuming under 100 nA typical. The 32KB Flash supports self-programmability via ICSP, allowing in-field firmware updates, while the 1.5KB RAM and 256-byte EEPROM support data retention and runtime parameter storage.
Architecturally, the PIC18LF2523 uses a 16-bit modified Harvard RISC core with a 78 instruction set, hardware multiplier, and 8x8 hardware multiplier for efficient DSP operations. The integrated 12-bit ADC (per JLCPCB listing) and high-resolution PWM modules simplify mixed-signal designs, eliminating external ADC or DAC components for many sensor and motor control applications.
Typical applications include industrial sensor nodes, low-power IoT edge devices, consumer appliances, automotive body electronics, USB-to-UART bridges, and small motor control. The wide voltage range and nanoWatt power management make it particularly suitable for battery-powered and energy-harvesting designs.
When designing with this part, ensure adequate decoupling on VDD/AVDD (0.1uF + 10uF) and verify the exposed pad is soldered to a sufficient ground copper pour for thermal dissipation. The 28-pin QFN footprint is pin-compatible with the PIC18LF2523-I/ML and PIC18F2523T-I/ML, simplifying PCB reuse across product variants.
This page synthesizes distributor pricing, verified drop-in alternatives, and practical design notes not found on a single distributor listing, supporting engineers and procurement teams in rapid BOM evaluation.
直接替换替代料： PIC18LF2523T-I/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： PIC18LF2523T-I/ML （相同外形与封装尺寸） ——差异在于 ADC, Package, Core Architecture, Timers, Program Memory (Flash).
快速对比工具——选择替代料号进行并排对比：
PIC18LF2523-I/ML
✅ 直接替换✓ 有现货
$3.65 / 个
查看数据手册 →PIC18LF2520T-I/ML
✅ 直接替换📋 参考替代料（不在目录中）
PIC18LF2520-I/ML
✅ 直接替换✓ 有现货
$4.32 / 个
查看数据手册 →PIC18F2523T-I/ML
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.32 / 个
查看数据手册 →PIC18LF2458T-I/SO
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.74 / 个
查看数据手册 →PIC18LF2523T-I/ML 最大额定值与电气特性
| Core Architecture | 8-bit PIC18 RISC (Harvard) |
| Program Memory (Flash) | 32 KB |
| RAM | 1.5 KB |
| EEPROM | 256 Byte |
| Operating Frequency | 40 MHz (max) |
| Supply Voltage (VDD) | 2.0 V to 5.5 V |
| 工作温度 | -40C to +85C (Industrial) |
| 封装 | QFN-28-EP (6x6 mm) |
| ADC | 12-bit (per JLCPCB listing) |
| ADC Channels | Up to 12 |
| I/O Pins | 25 |
| Communication Peripherals | UART, SPI, I2C |
| PWM Modules | Enhanced CCP (ECCP) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
PIC18LF2523T-I/ML 引脚配置
| 引脚 1 | RA2/AN2/VREF-/CVREF — Digital I/O / Analog input / Voltage reference |
| 引脚 2 | RA3/AN3/VREF+ — Digital I/O / Analog input / Voltage reference |
| 引脚 3 | RA4/T0CKI/C1OUT — Digital I/O / Timer0 clock input / Comparator output |
| 引脚 4 | RA5/AN4/SS/HLVDIN/C2OUT — Digital I/O / Analog input / SPI slave select |
| 引脚 5 | RA6/OSC2/CLKO — Digital I/O / Oscillator output |
| 引脚 6 | RA7/OSC1/CLKI — Digital I/O / Oscillator input |
| 引脚 7 | VSS — Ground reference |
| 引脚 8 | VDD — Positive supply voltage |
| 引脚 9 | RB0/INT0/FLT0/AN12 — Digital I/O / External interrupt / Analog input |
| 引脚 10 | RB1/INT1/AN10 — Digital I/O / External interrupt / Analog input |
| 引脚 11 | RB2/INT2/AN8 — Digital I/O / External interrupt / Analog input |
| 引脚 12 | RB3/AN9/CCP2 — Digital I/O / Analog input / Capture/Compare/PWM |
| 引脚 13 | RB4/AN11/KBI0 — Digital I/O / Analog input / Keyboard interrupt |
| 引脚 14 | RB5/KBI1/PGM — Digital I/O / Keyboard interrupt / LVP programming |
| 引脚 15 | RB6/PGC — Digital I/O / ICSP clock |
| 引脚 16 | RB7/PGD — Digital I/O / ICSP data |
| 引脚 17 | VSS — Ground reference |
| 引脚 18 | VDD — Positive supply voltage |
| 引脚 19 | RC0/T1OSO/T1CKI — Digital I/O / Timer1 oscillator output |
| 引脚 20 | RC1/T1OSI/CCP2 — Digital I/O / Timer1 oscillator input |
| 引脚 21 | RC2/CCP1 — Digital I/O / Capture/Compare/PWM |
| 引脚 22 | RC3/SCK/SCL — Digital I/O / SPI clock / I2C clock |
| 引脚 23 | RC4/SDI/SDA — Digital I/O / SPI data in / I2C data |
| 引脚 24 | RC5/SDO — Digital I/O / SPI data out |
| 引脚 25 | RC6/TX/CK — Digital I/O / UART transmit / clock |
| 引脚 26 | RC7/RX/DT — Digital I/O / UART receive / data |
| 引脚 27 | RE0/RD/AN5 — Digital I/O / Parallel port read / Analog input |
| 引脚 28 | RE1/WR/AN6 — Digital I/O / Parallel port write / Analog input |
| 引脚 29 | EP — Exposed thermal pad - connect to VSS (ground) |
典型应用
PIC18LF2523T-I/ML 适用于 6 应用s: Battery-Powered IoT Sensor Nodes, Industrial Sensor Signal Conditioning, USB-to-UART Bridge / CDC Devices, Small Motor Control (BLDC / Stepper), Consumer Appliance Control Boards, Automotive Body Electronics.
Battery-Powered IoT Sensor Nodes
The PIC18LF2523T-I/ML is ideal for battery-powered IoT sensor nodes because its 2.0V to 5.5V supply range supports direct operation from two AA cells or Li-coin cells without a boost converter. Its nanoWatt Technology reduces sleep current to under 100 nA, extending battery life to multiple years in low-duty-cycle applications. The 12-bit ADC (per JLCPCB listing) provides sensor measurement resolution, while UART/SPI/I2C peripherals connect to wireless modules like LoRa or BLE transceivers.
推荐
Industrial Sensor Signal Conditioning
The PIC18LF2523T-I/ML's 12-bit ADC with up to 12 input channels handles multi-sensor industrial interfaces (temperature, pressure, flow) without external ADCs. Its 40 MHz clock speed (10 MIPS) executes DSP-like filtering algorithms for noise reduction, while the ECCP/PWM module drives 4-20 mA current loops. The 32KB Flash accommodates complex calibration routines, and the 256-byte EEPROM stores per-unit calibration coefficients for field-deployed sensors.
推荐
USB-to-UART Bridge / CDC Devices
The PIC18LF2523T-I/ML handles USB-to-UART communication tasks using its on-chip USB transceiver (where present in the family) or external USB-serial bridge chips. Its UART peripheral implements CDC class communications for virtual COM port enumeration, while the 32KB Flash supports USB stack and protocol handlers. The wide 2.0V-5.5V range makes it suitable for both USB bus-powered devices (5V) and battery-powered debug tools (3.3V).
推荐
Small Motor Control (BLDC / Stepper)
The PIC18LF2523T-I/ML's Enhanced CCP (ECCP) PWM module drives small brushless DC or stepper motors up to several hundred mA via external MOSFET drivers. Its 40 MHz clock and hardware multiplier (8x8) handle real-time PID control loops, while the 12-bit ADC reads back EMF sensing or current shunt measurements. The QFN-28 package's exposed pad enables thermal dissipation during high-switching-frequency PWM operation.
推荐
Consumer Appliance Control Boards
Consumer appliances (washing machines, dishwashers, coffee makers) integrate the PIC18LF2523T-I/ML for user interface handling, sensor monitoring, and actuator control. Its robust 32KB Flash holds complex state machines for appliance cycles, while 1.5KB RAM supports display buffering and parameter storage. The 256-byte EEPROM retains user preferences across power cycles, and the wide -40C to +85C operating range handles appliance thermal environments.
推荐
Automotive Body Electronics
While not AEC-Q100 qualified, the PIC18LF2523T-I/ML serves automotive aftermarket and non-safety body electronics like LED controllers, ambient lighting, and accessory modules. Its 2.0V-5.5V range handles automotive 12V battery transients when paired with TVS protection and an LDO. The 32KB Flash implements CAN-LIN gateways or PWM-driven lighting effects, while the 12-bit ADC monitors battery voltage and current sense inputs.
推荐
推荐产品汇总
工程参考数据： PIC18LF2523T-I/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 | PIC18LF2523-I/ML | PIC18LF2520T-I/ML | PIC18LF2520-I/ML | PIC18F2523T-I/ML |
|---|---|---|---|---|---|
| Package | QFN-28-EP (6x6 mm) | QFN-28-EP (6x6 mm) - same | QFN-28-EP (6x6 mm) - same | QFN-28-EP (6x6 mm) - same | QFN-28-EP (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 32 KB | 32 KB | 16 KB (-50%) | 16 KB (-50%) | 32 KB |
| RAM | 1.5 KB | 1.5 KB | 1.5 KB | 1.5 KB | 1.5 KB |
| Operating Voltage | 2.0V to 5.5V | 2.0V to 5.5V | 2.0V to 5.5V | 2.0V to 5.5V | 4.2V to 5.5V |
| Max Frequency | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Packaging Form | Tape & Reel | Tray | Tape & Reel | Tray | Tape & Reel |
关键差异点
- Low-voltage operation down to 2.0V （对比 PIC18F2523T-I/ML)
- 32KB Flash for full-featured firmware （对比 PIC18LF2520T-I/ML)
- 12-bit ADC for higher sensor resolution （对比 PIC18LF2520T-I/ML)
设计说明
The QFN-28-EP package's exposed thermal pad (EP, pin 29) MUST be soldered to a ground copper pour for electrical performance and thermal dissipation. Use thermal vias (typically 4-9 vias in a 3x3 array) to connect the EP to internal ground planes. Without proper EP soldering, the device may exhibit thermal runaway under high-load conditions or RF emissions due to poor ground reference.
Place a 0.1uF ceramic decoupling capacitor as close as possible to each VDD pin (pins 8 and 18), with a 10uF bulk capacitor on the main supply rail. For AVCC/AVSS analog supplies (if used), add a 10uH inductor or ferrite bead between VDD and AVCC plus a 0.1uF + 10uF decoupling network to isolate analog and digital sections. Power supply rise time should be less than 0.1V/ms for proper brown-out reset operation.
Do not confuse LF (low-voltage Flash, 2.0V-5.5V) and F (standard Flash, 4.2V-5.5V) variants when sourcing replacements - operation below 4.2V on an F variant may cause Flash programming failures and erratic behavior. Verify the exact voltage range for your design. Also note that the PIC18LF2523 and PIC18F2523 have the same die; the LF simply adds a wider operating voltage specification verified at test.
合规信息
RoHS compliant per JLCPCB and Hotenda product listings. Industrial temperature grade (-40C to +85C) but not AEC-Q100 qualified for automotive safety applications.
