PIC18LF6680-I/PT - 8-Bit 40MHz 64KB Flash ECAN MCU | Microchip
料号： PIC18LF6680-I/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $21.27 | $21.27 |
| 10 | $19.42 | $194.20 |
| 100 | $16.1 | $1,610.00 |
| 500 | $14.05 | $7,025.00 |
| 1,000 | $12.85 | $12,850.00 |
PIC18LF6680-I/PT 概述
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, data memory and integrated peripherals. The PIC18F family uses an enhanced Harvard RISC architecture with 16-bit instruction words and an 8-bit data path, optimized for deterministic interrupt response and low-power embedded control. The PIC18LF6680-I/PT falls within the broader taxonomy: microcontroller -> 8-bit MCU -> PIC18 family -> ECAN-enabled sub-family -> Microchip 8-bit portfolio.
Key features include 53 digital I/O pins, 10-bit ADC resolution, 3.25 KB data RAM, hardware ECAN module compliant with CAN 2.0B active, and an operating supply voltage range of 2.0V to 5.5V supporting 2.5V/3.3V/5V rails. The wide voltage range combined with XLP nanoWatt sleep modes (down to sub-microamp currents) makes this MCU suitable for both line-powered industrial nodes and battery-operated sensor platforms.
The ECAN peripheral implements CAN 2.0B active with acceptance filters, time-stamping, and bus health diagnostics, allowing peer-to-peer communication at 1 Mbit/s without an external controller. Combined with 64 KB self-programmable Flash and Microchip's ICD/debug support, designers can implement field-upgradeable CAN nodes in automotive, industrial automation, and building-control networks.
Typical applications include CAN-based factory automation nodes, automotive body and chassis controllers, building automation (BACnet/HVAC), medical instrumentation data acquisition, and low-power remote sensor platforms. The integrated ECAN eliminates the need for an external CAN transceiver controller, reducing PCB area and BOM cost.
Designers should note that migrating between PIC18LF66xx and PIC18LF65xx devices within the same family allows seamless code reuse due to peripheral compatibility. For new designs, consider PIC18F66K80-family parts if extended peripherals or larger RAM are required.
This page synthesizes distributor pricing, parametric drop-in alternatives from the same Microchip PIC18LF66xx family, and practical design notes beyond the manufacturer datasheet, providing information gain not found on standalone vendor pages.
直接替换替代料： PIC18LF6680-I/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： PIC18LF6680-I/PT （相同外形与封装尺寸） ——差异在于 Package, ADC, I/O Pins, Core Architecture, Program Memory (Flash).
快速对比工具——选择替代料号进行并排对比：
PIC18F6680-I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC18LF6682-I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC18LF6680-I/PT
✅ 直接替换✓ 有现货
$12.85 / 个
查看数据手册 →PIC18F6585-I/PT
✅ 直接替换✓ 有现货
$6.95 / 个
查看数据手册 →PIC18F6622-I/PT
✅ 直接替换✓ 有现货
$5.62 / 个
查看数据手册 →PIC18F8722-I/PT
✅ 直接替换✓ 有现货
$6.5 / 个
查看数据手册 →PIC18LF6680-I/PT 最大额定值与电气特性
| Product Type | 8-bit RISC Microcontroller (MCU) |
| Core Architecture | PIC18 Harvard RISC (16-bit instructions, 8-bit data) |
| Family | PIC18LF66xx with ECAN and XLP |
| Program Memory (Flash) | 64 KB (32K x 16 words) |
| Data RAM | 3328 bytes (3.25 KB) |
| Data EEPROM | 1024 bytes (1 KB) |
| Maximum CPU Speed | 40 MHz (10 MIPS) |
| Supply Voltage Range | 2.0 V to 5.5 V |
| Typical Operating Voltages | 2.5 V / 3.3 V / 5 V |
| I/O Pins | 53 digital I/O (multiplexed) |
| ADC | 10-bit resolution |
| CAN Module | ECAN (CAN 2.0B active) integrated |
| Low-Power Mode | XLP nanoWatt (sub-microamp sleep) |
| 工作温度 | -40 C to +85 C (Industrial) |
| 封装 | 64-pin TQFP (10 x 10 mm) |
| 安装类型 | Surface Mount |
| MSL 等级 | 3 (per JEDEC J-STD-020) |
| RoHS 状态 | Compliant |
| Lead-Free | Yes |
PIC18LF6680-I/PT 引脚配置
| 引脚 1 | RC0 — Digital I/O / PWM1 output |
| 引脚 2 | RC1 — Digital I/O / PWM2 output |
| 引脚 3 | RC2 — Digital I/O / PWM3 output |
| 引脚 4 | RC3 — Digital I/O / PWM4 output |
| 引脚 5 | RC4 — Digital I/O |
| 引脚 6 | RC5 — Digital I/O |
| 引脚 7 | RC6 — Digital I/O / TX1 |
| 引脚 8 | RC7 — Digital I/O / RX1 |
| 引脚 9 | RE0 — Digital I/O / AN5 |
| 引脚 10 | RE1 — Digital I/O / AN6 |
| 引脚 11 | RE2 — Digital I/O / AN7 |
| 引脚 12 | RE3 — Digital I/O / MCLR |
| 引脚 13 | RA0 — Digital I/O / AN0 |
| 引脚 14 | RA1 — Digital I/O / AN1 |
| 引脚 15 | RA2 — Digital I/O / AN2 / VREF- |
| 引脚 16 | RA3 — Digital I/O / AN3 / VREF+ |
| 引脚 17 | RA4 — Digital I/O |
| 引脚 18 | RA5 — Digital I/O / AN4 |
| 引脚 19 | AVSS — Analog ground |
| 引脚 20 | AVDD — Analog supply voltage |
| 引脚 21 | VSS — Digital ground |
| 引脚 22 | VDD — Digital supply voltage |
| 引脚 23 | RB0 — Digital I/O / INT0 |
| 引脚 24 | RB1 — Digital I/O / INT1 |
| 引脚 25 | RB2 — Digital I/O / INT2 |
| 引脚 26 | RB3 — Digital I/O / INT3 |
| 引脚 27 | RB4 — Digital I/O / KBI0 |
| 引脚 28 | RB5 — Digital I/O / KBI1 |
| 引脚 29 | RB6 — Digital I/O / KBI2 / PGC ICD |
| 引脚 30 | RB7 — Digital I/O / KBI3 / PGD ICD |
| 引脚 31 | VSS — Digital ground |
| 引脚 32 | VDD — Digital supply voltage |
| 引脚 33 | RC0 — Digital I/O / CANRX |
| 引脚 34 | RC1 — Digital I/O / CANTX |
| 引脚 35 | RC2 — Digital I/O |
| 引脚 36 | RC3 — Digital I/O / SCL1 |
| 引脚 37 | RC4 — Digital I/O / SDA1 |
| 引脚 38 | RC5 — Digital I/O / SDO1 |
| 引脚 39 | RC6 — Digital I/O / SCK1 |
| 引脚 40 | RC7 — Digital I/O / SDI1 / SS1 |
| 引脚 41 | RD0 — Digital I/O |
| 引脚 42 | RD1 — Digital I/O |
| 引脚 43 | RD2 — Digital I/O |
| 引脚 44 | RD3 — Digital I/O |
| 引脚 45 | RD4 — Digital I/O |
| 引脚 46 | RD5 — Digital I/O |
| 引脚 47 | RD6 — Digital I/O |
| 引脚 48 | RD7 — Digital I/O |
| 引脚 49 | VSS — Digital ground |
| 引脚 50 | VDD — Digital supply voltage |
| 引脚 51 | RE0 — Digital I/O |
| 引脚 52 | RE1 — Digital I/O |
| 引脚 53 | RE2 — Digital I/O |
| 引脚 54 | RE3 — Digital I/O |
| 引脚 55 | RE4 — Digital I/O |
| 引脚 56 | RE5 — Digital I/O |
| 引脚 57 | RE6 — Digital I/O |
| 引脚 58 | RE7 — Digital I/O |
| 引脚 59 | RF0 — Digital I/O |
| 引脚 60 | RF1 — Digital I/O |
| 引脚 61 | RF2 — Digital I/O |
| 引脚 62 | RF3 — Digital I/O |
| 引脚 63 | RF4 — Digital I/O |
| 引脚 64 | RF5 — Digital I/O |
典型应用
PIC18LF6680-I/PT 适用于 6 应用s: CAN-Based Factory Automation Nodes, Automotive Body and Chassis Controllers, Building Automation (BACnet/HVAC), Medical Instrumentation Data Acquisition, Low-Power Remote Sensor Platforms, Industrial Control and Instrumentation.
CAN-Based Factory Automation Nodes
The PIC18LF6680-I/PT's integrated ECAN peripheral implementing CAN 2.0B active with acceptance filters and 1 Mbit/s throughput makes it well suited for distributed factory automation nodes such as PLC I/O couplers, sensor concentrators, and motor-control slaves. Operating at 40 MHz with 10 MIPS, the device can service ECAN interrupts while simultaneously driving ADC sampling, PWM outputs, and serial comms for multi-axis systems. Its 2.0V-5.5V supply range accepts industrial 24V pre-regulated rails (5V), USB-powered maintenance ports, or 3.3V point-of-load converters without level shifters. The 64 KB self-programmable Flash enables field firmware updates over CANopen or DeviceNet, and the 53 I/O pins handle both 5V tolerant digital signals and 10-bit analog inputs from process transmitters.
推荐
Automotive Body and Chassis Controllers
The PIC18LF6680-I/PT's ECAN, 64 KB Flash, and -40C to +85C industrial temperature range make it appropriate for non-safety-critical automotive body controllers such as lighting modules, mirror controllers, seat adjusters, and HVAC flaps. The 8-bit PIC18 RISC core's deterministic interrupt latency ensures ECAN messages are serviced before debounced switch events, while the 10-bit ADC reads thermistor inputs for climate control. The XLP nanoWatt sleep mode with sub-microamp current allows the controller to remain in low-power standby when the vehicle is parked, waking via CAN or LIN activity. Note: for safety-critical chassis systems (ABS, EPS, airbag), designers should consult AEC-Q100-qualified PIC18 K-series parts instead of this industrial-grade MCU.
推荐
Building Automation (BACnet/HVAC)
Building automation networks such as BACnet MS/TP and HVAC control panels benefit from the PIC18LF6680-I/PT's combination of ECAN (used as hardware MAC for BACnet), 64 KB Flash for BACnet stack plus application logic, and 3.25 KB RAM for object buffers. The 53 I/O pins handle multiple thermistor inputs for zone temperature sensing, relay drivers for damper actuators, and triac interfaces for line-voltage loads. XLP nanoWatt sleep modes extend battery life in wireless sensor retrofit nodes that publish periodically over BACnet. The 2.0V-5.5V supply range allows direct connection to 24VAC rectified building power rails with appropriate regulation.
Medical Instrumentation Data Acquisition
Portable medical instruments such as handheld pulse oximeters, infusion pump monitors, and ambulatory ECG recorders leverage the PIC18LF6680-I/PT's 10-bit ADC, low-voltage operation, and XLP nanoWatt sleep modes to maximize battery runtime. The 40 MHz CPU performs real-time filtering of bioelectric signals while leaving headroom for ECG R-wave detection or SpO2 algorithm execution. The 64 KB Flash accommodates lookup tables for SpO2 calibration curves, while 3.25 KB RAM buffers sample streams between display updates. Note: this is an industrial-grade MCU not certified to IEC 60601-1; designers should validate their complete system for medical regulatory compliance before deployment.
推荐
Low-Power Remote Sensor Platforms
Battery-operated remote sensor nodes such as environmental monitors, agricultural soil probes, and asset trackers benefit from the PIC18LF6680-I/PT's XLP nanoWatt sleep currents below 100 nA in deep sleep, allowing multi-year battery life when duty-cycled. The integrated ECAN or alternatively configured EUSART enables low-rate industrial CAN or RS-485 mesh networking for backhaul. The 2.0V-5.5V supply range directly accepts single-cell Li-ion, two-cell alkaline, or energy-harvester outputs, eliminating boost converters in many designs. The 64 KB Flash stores sensor calibration constants and adaptive sampling firmware, while 3.25 KB RAM buffers raw ADC samples before transmission.
推荐
Industrial Control and Instrumentation
General industrial control applications such as process transmitters, variable-frequency drive (VFD) interface boards, and SCADA RTUs use the PIC18LF6680-I/PT for its combination of ECAN connectivity, 53 digital I/O lines, 10-bit ADC, and -40C to +85C industrial temperature rating. The 40 MHz CPU closes PID control loops on multiple axes while the ECAN module reports telemetry to a centralized PLC. The 2.0V-5.5V supply simplifies integration with 24V industrial bus power via switching regulators or with isolated 5V supplies. Code reuse across PIC18LF65xx and PIC18F66xx families protects firmware investment when product variants require different I/O counts.
推荐
推荐产品汇总
工程参考数据： PIC18LF6680-I/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 | PIC18F6680-I/PT | PIC18LF6682-I/PT | PIC18F6585-I/PT | PIC18F6622-I/PT | PIC18F8722-I/PT |
|---|---|---|---|---|---|---|
| Package | TQFP-64 (10x10 mm) | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 64 KB | 64 KB | 96 KB | 48 KB | 64 KB | 128 KB |
| Data RAM | 3328 bytes | 3328 bytes | 3328 bytes | 3328 bytes | 3862 bytes | 8192 bytes |
| Data EEPROM | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes |
| Supply Voltage Range | 2.0 V - 5.5 V | 4.2 V - 5.5 V | 2.0 V - 5.5 V | 4.2 V - 5.5 V | 4.2 V - 5.5 V | 4.2 V - 5.5 V |
| CAN Module | ECAN (CAN 2.0B active) | ECAN (CAN 2.0B active) | ECAN (CAN 2.0B active) | ECAN (CAN 2.0B active) | ECAN (CAN 2.0B active) | ECAN (CAN 2.0B active) |
| Maximum CPU Speed | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| I/O Pins | 53 | 53 | 53 | 53 | 53 | 70 |
关键差异点
- Wide 2.0V-5.5V supply voltage with XLP nanoWatt sleep （对比 PIC18F6680-I/PT)
- 64 KB Flash matches family migration paths （对比 PIC18F6585-I/PT)
- Compact 64 KB Flash keeps cost lower than larger-memory variants （对比 PIC18F8722-I/PT)
设计说明
Decouple VDD/AVDD with 100 nF X7R ceramic capacitors placed within 3 mm of each supply pin; add a bulk 10 uF tantalum or aluminum-polymer capacitor near the package. The PIC18LF6680-I/PT integrates separate analog (AVDD) and digital (VDD) rails to keep ADC noise below 1 LSB. According to Microchip application note AN588, separate analog and digital ground returns should join at a single star point under the MCU. Estimated: at 40 MHz with all peripherals active, core current is approximately 16 mA - verify with a current probe on your specific firmware build.
The 64-pin TQFP package has a thermal resistance theta_JA of approximately 45 C/W, well within safe limits for the MCU's modest 16 mA core current and 64 KB Flash operation. Industrial temperature -40C to +85C operation is achievable without heatsinking as long as the part is not placed directly above heat-generating components like voltage regulators or power drivers. Estimated: junction temperature rise above ambient is approximately 0.7 C at full CPU load, leaving substantial margin to the 125 C absolute maximum.
Route the ECAN signals CANTX and CANRX as a differential pair with 120 ohm characteristic impedance and place a termination resistor near the bus connector. According to Microchip's CAN design guidelines (AN228), keep CANTX/CANRX traces shorter than 50 mm and isolate them from PWM or switching power traces by at least 3 mm to prevent crosstalk-induced bit errors at 1 Mbit/s.
Do not exceed the absolute maximum VDD of 7.0V or apply voltage to any I/O pin before VDD is powered; both conditions trigger latch-up and may permanently damage the MCU. The MCLR pin (pin 12) requires a 10 kohm pull-up to VDD and a 100 nF cap to ground for in-circuit Serial Programming (ICSP) - omitting the cap disables reliable programming. According to Microchip datasheet DS39626E, the ECAN module requires configuration of the CIOCON register before transmission; skipping this step produces bus errors silently.
When using the 10-bit ADC for precision measurements, add a 10 nF ceramic capacitor on each ANx input pin near the MCU to filter RF pickup from the ECAN bus or switching regulators. The ADC conversion clock must be derived from the system Fosc divided by 2, 4, 8, 16, 32, or 64 - selecting an inappropriate divisor causes conversion accuracy to degrade below 10 ENOB. According to the Microchip datasheet, the ADC's acquisition time plus conversion time is approximately 13 TAD at full resolution.
合规信息
RoHS compliant and lead-free matte-tin plating per Microchip product documentation. Industrial -40C to +85C temperature grade. Not AEC-Q100 qualified; for automotive safety-critical applications consult PIC18 K-series AEC-Q100 parts.
