PIC18LF65K40-E/MR - 8-Bit 64MHz XLP MCU, 32KB Flash | Microchip
料号： PIC18LF65K40-E/MR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.99 | $3.99 |
| 10 | $3.59 | $35.90 |
| 100 | $3.21 | $321.00 |
| 500 | $2.84 | $1,420.00 |
| 1,000 | $2.55 | $2,550.00 |
PIC18LF65K40-E/MR 概述
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (Flash/EEPROM/RAM), and configurable peripherals on a single silicon die. PIC18 microcontrollers are mid-range 8-bit MCUs from Microchip that balance low power, deterministic performance, and rich peripheral integration. They sit within the broader hierarchy of MCU -> microcontroller -> embedded processor -> semiconductor, and the XLP sub-family targets battery-powered and energy-harvesting applications through aggressive low-power modes and nanoWatt technology.
Key features of the PIC18LF65K40 include Core Independent Peripherals such as the Configurable Logic Cell (CLC), Complementary Waveform Generator (CWG), and Windowed Watchdog Timer (WWDT). The device integrates ECAN for industrial networking, a 10-bit ADC with up to 10 channels, 8-bit DAC, comparators, PWM, SMT (Signal Measurement Timer), and Peripheral Pin Select (PPS) for flexible signal routing. Memory comprises 32KB Flash, 2KB RAM, and 256 bytes of EEPROM. The 64-pin VQFN package with 9x9mm body and exposed thermal pad supports high-pin-count applications while enabling surface-mount assembly.
The architecture uses an enhanced Harvard structure with separate program and data buses, allowing simultaneous instruction fetch and data access for sustained throughput. The integrated nanoWatt XLP technology provides ultra-low sleep currents suitable for always-on sensor nodes and IoT edge devices. Hardware CRC, Memory Scan, Zero-Cross Detect, and Hardware CVD (Capacitive Voltage Divider) further reduce host CPU overhead.
Typical applications include industrial sensor interfaces with ECAN connectivity, low-power IoT edge nodes, consumer appliance control panels, building automation, automotive body and interior modules, and battery-powered instrumentation. The wide 1.8V to 3.6V range allows direct connection to a single Li-ion cell or 2x AA batteries.
When designing with this device, prioritize peripheral pin assignment early because the PPS feature must be configured before first use. Place a 100nF decoupling capacitor on each VDD/VSS pair and ensure the exposed thermal pad is soldered to a sufficiently large copper pour for thermal dissipation. The ECAN module requires an external transceiver for physical bus connection.
直接替换替代料： PIC18LF65K40-E/MR ——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： PIC18LF65K40-E/MR （相同外形与封装尺寸） ——差异在于 Package, Program Memory (Flash), ADC, Core Independent Peripherals, Core Architecture.
快速对比工具——选择替代料号进行并排对比：
PIC18LF65K40-I/MR
✅ 直接替换📋 参考替代料（不在目录中）
PIC18LF66K40-I/MR
✅ 直接替换✓ 有现货
$2.81 / 个
查看数据手册 →PIC18F65K40-I/MR
✅ 直接替换✓ 有现货
$2.3 / 个
查看数据手册 →PIC18F66K40-I/MR
✅ 直接替换✓ 有现货
$2.68 / 个
查看数据手册 →PIC18LF65K40-E/PT
✅ 直接替换✓ 有现货
$2.85 / 个
查看数据手册 →PIC18LF65K40-E/MR 最大额定值与电气特性
| Core | PIC 8-bit |
| Family | PIC18 XLP 18K |
| CPU Speed | 64 MHz |
| Program Memory (Flash) | 32 KB (16K x 16) |
| RAM | 2 KB |
| EEPROM | 256 B |
| Operating Voltage Range | 1.8 V to 3.6 V |
| 工作温度范围 | -40 C to +125 C (Extended) |
| I/O Pins | Up to 60 (per package) |
| ADC | 10-bit, up to 10 channels |
| DAC | 8-bit, 1 channel |
| Comparators | Yes |
| PWM Modules | Yes |
| ECAN | Yes (integrated) |
| Peripheral Pin Select (PPS) | Yes |
| Core Independent Peripherals | CLC, CWG, WWDT, SMT |
| 封装 | 64-VQFN (9x9) with exposed pad |
| 安装类型 | Surface Mount |
| MSL 等级 | 3 (per JEDEC J-STD-020) |
| RoHS 状态 | Compliant |
PIC18LF65K40-E/MR 64-vqfn (9x9) with exposed pad 引脚配置指南
PIC18LF65K40-E/MR（64-vqfn (9x9) with exposed pad 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： PIC18LF65K40-E/MR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
PIC18LF65K40-E/MR 适用于 6 应用s: Industrial CAN Sensor Network, Low-Power IoT Edge Node, Consumer Appliance Control Panel, Building Automation Controller, Automotive Body and Interior Module, Battery-Powered Instrumentation.
Industrial CAN Sensor Network
The PIC18LF65K40-E/MR is well-suited for industrial CAN sensor network nodes because its integrated ECAN peripheral eliminates the need for an external CAN controller, reducing BOM cost and PCB area. With 60 I/O pins and 10-bit ADC channels, the device can directly interface multiple analog sensors (temperature, pressure, flow) while maintaining 32KB of Flash for protocol stacks and sensor-fusion algorithms. The 1.8V-3.6V operating range allows direct connection to 3.3V industrial sensor rails. When paired with an MCP2551 CAN transceiver, the node provides reliable communication on industrial CAN 2.0B networks at bit rates up to 1 Mbps over twisted-pair cabling.
推荐
Low-Power IoT Edge Node
The PIC18LF65K40-E/MR excels in battery-powered IoT edge node applications due to its XLP nanoWatt technology and sub-uA sleep currents. The 64-pin VQFN package with exposed pad supports compact sensor boards where the MCU wakes on interrupt, samples an analog sensor via the 10-bit ADC, transmits via ECAN or UART, and returns to deep sleep. Nanoamp-range sleep current enables multi-year battery life on 2x AA cells. The 32KB Flash accommodates LoRaWAN or MQTT-SN protocol stacks with overhead for OTA firmware updates. Hardware CRC and Memory Scan reduce host CPU load during sleep-to-wake transitions.
推荐
Consumer Appliance Control Panel
The PIC18LF65K40-E/MR fits consumer appliance control panel designs because of its wide operating voltage (1.8V-3.6V), extended temperature range (-40C to +125C), and rich PWM/timer peripheral set for motor, valve, and display control. The integrated CWG (Complementary Waveform Generator) drives half-bridges for switched-mode power or motor drivers without CPU intervention, while the SMT (Signal Measurement Timer) precisely measures sensor pulse widths for flow meters or humidity sensors. The 64-VQFN package supports slim industrial designs and the exposed pad ensures thermal dissipation for panel-backlight driving applications.
推荐
Building Automation Controller
The PIC18LF65K40-E/MR supports building automation controller applications including HVAC zone controllers, lighting controllers, and access panels, thanks to its ECAN networking capability and CLC (Configurable Logic Cell) peripheral for implementing custom glue logic without external gates. The CLC combines onboard comparators and timer outputs to create smart fault-detection circuits for over-current and under-voltage events. The 256-byte EEPROM stores user settings and calibration constants across power cycles. With Peripheral Pin Select, signal routing can be optimized post-PCB design, accelerating design iterations.
推荐
Automotive Body and Interior Module
The PIC18LF65K40-E/MR (extended temperature grade -40C to +125C) is well-suited for non-safety automotive body and interior modules such as seat controllers, mirror adjusters, and interior lighting hubs. The wide operating voltage supports 12V automotive battery rails after a 3.3V LDO. ECAN connectivity enables integration into the vehicle CAN bus for diagnostic and command traffic, while PWM modules drive motors and dimmable LEDs. The hardware WWDT (Windowed Watchdog Timer) provides functional safety monitoring required for body-electronics modules. Note: This grade is not AEC-Q100 qualified - the AEC-Q100 K40 variant should be chosen for safety-relevant modules.
推荐
Battery-Powered Instrumentation
The PIC18LF65K40-E/MR is a strong fit for handheld and portable instrumentation including digital multimeters, environmental loggers, and field-test equipment. The XLP technology provides sub-uA sleep current for shelf-life extension, and the 10-bit ADC with multiple channels enables direct measurement of voltage, current, and resistance via external signal conditioning. The 32KB Flash stores calibration tables and measurement procedures, while the 2KB RAM buffers measurement data before display or USB transmission. The exposed thermal pad maintains thermal stability for precise analog measurements over varying ambient conditions.
推荐
推荐产品汇总
工程参考数据： PIC18LF65K40-E/MR ——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 | PIC18LF65K40-I/MR | PIC18LF66K40-I/MR | PIC18F65K40-I/MR | PIC18F66K40-I/MR | PIC18LF65K40-E/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-VQFN (9x9) with exposed pad (MR) | 64-VQFN (9x9) - same | 64-VQFN (9x9) - same | 64-VQFN (9x9) - same | 64-VQFN (9x9) - same | 64-VQFN (9x9) - same |
| Flash Program Memory | 32 KB | 32 KB | 64 KB | 32 KB | 64 KB | 32 KB |
| RAM | 2 KB | 2 KB | 4 KB | 2 KB | 4 KB | 2 KB |
| Operating Voltage | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 1.8 V to 3.6 V |
| CPU Speed | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Temperature Grade | Extended -40C to +125C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Extended -40C to +125C |
| ECAN | Yes | Yes | Yes | Yes | Yes | Yes |
关键差异点
- XLP nanoWatt technology with sub-100nA deep sleep current （对比 PIC18F65K40-I/MR)
- Extended -40C to +125C temperature grade （对比 PIC18LF65K40-I/MR)
- Integrated ECAN with full CAN 2.0B support （对比 PIC18LF46K40-I/PT (40-pin variant))
设计说明
Place a 100nF ceramic decoupling capacitor on each VDD/VSS pair, located within 2mm of the corresponding pin per the Microchip datasheet layout guidelines. The PIC18LF65K40-E/MR operates from 1.8V to 3.6V; a low-dropout regulator such as MCP1700 is recommended for 12V or higher input rails to minimize quiescent current. Enable the internal brown-out reset (BOR) to prevent undefined execution during supply voltage dips below 1.8V. Estimated: total power consumption at 64MHz with all peripherals active is approximately 15mA; in deep sleep this drops to under 100nA thanks to XLP nanoWatt technology.
The 64-VQFN package features an exposed thermal pad that MUST be soldered to a ground pour of at least 1 square inch (6.45 cm^2) of copper to meet the datasheet's thermal resistance specification. Without adequate thermal dissipation, the junction temperature can exceed 125C in enclosed applications at high CPU load. For continuous full-speed (64MHz) operation, verify junction temperature with a thermal probe or by reading the on-chip temperature indicator diode. The exposed pad also serves as the primary low-impedance ground path for digital switching noise.
PIC18 K40-series devices require explicit PPS (Peripheral Pin Select) configuration before peripherals (UART, SPI, I2C, PWM output) will function on physical pins. A common mistake is to assume default pin mapping - the PPS registers must be unlocked, configured, and locked in firmware startup. Also note that the LF variant operates only to 3.6V: connecting 5V signals directly to GPIO will damage the MCU. Use a level translator or choose the PIC18F65K40 (5V tolerant) for mixed-voltage systems. The ECAN module requires configuration of the CiCFG1/CiCFG2/CiCFG3 registers for the desired bit rate before bus activity.
Route the ECAN differential signals (CANTX/CANRX) as a 100-ohm differential pair with impedance matching, keeping trace length under 100mm to minimize reflections. Decouple the MCP2551 (or equivalent) CAN transceiver with a 100nF ceramic capacitor placed within 3mm of its VDD pin. For the analog ADC inputs, isolate the analog ground pour from the digital ground using a single-point connection (star ground) near the MCU's AVSS pin to avoid digital switching noise corrupting ADC measurements. The 10-bit ADC achieves best linearity with a 10us acquisition time and an external buffer amplifier for high-impedance sources.
合规信息
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - choose the AEC-Q100 K40 automotive variant for safety-relevant automotive modules. MSL Level 3 per JEDEC J-STD-020.
