PIC18LF25K80-I/MM - 8-bit 64MHz MCU, 32KB Flash, ECAN | Microchip
MPN: PIC18LF25K80-I/MM ✓ Hoạt độngPIC18LF25K80-I/MM Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU, program and data memory, peripheral I/O, and timers into one package. The PIC18 family is built on an enhanced 8-bit Harvard RISC architecture widely used in automotive, industrial, and consumer embedded designs. XLP (eXtreme Low Power) technology is Microchip's branding for sub-uA sleep currents, making LF (low-voltage F) parts popular in battery-powered and energy-harvesting applications.
Key features include one ECAN module (CAN 2.0B active) for in-vehicle networking, an integrated 12-bit ADC with up to 8 analog channels, a CTMU peripheral for touch sensing and temperature conversion, four 16-bit timers/capture/compare modules, two UART, two SPI, and one I2C. The NanoWatt XLP modes drop quiescent current to nanoampere levels, enabling years of operation from a single coin cell.
In the architecture, an 8-bit data path feeds 16-bit instructions with a hardware multiplier, and the in-circuit serial programming (ICSP) and in-circuit debug (ICD) interfaces remain accessible on the QFN pins, simplifying prototyping. The dual oscillator block supports crystal, resonator, or internal HF/LF oscillator with PLL.
Typical applications include CAN-based automotive body and chassis modules, building automation sensor nodes, industrial sensor hubs, and low-power IoT edge devices using ECAN as the fieldbus. The wide 1.8-5.5V input range also suits battery-backed metering. The CTMU enables capacitive touch keys and proximity sensing without an external timer IC.
When designing with this device, allocate the exposed thermal pad to a continuous copper pour for thermal and electrical grounding. Ensure the ECAN bus transceiver (e.g., MCP2561) is paired with proper bus termination. The 28-QFN footprint rules out legacy through-hole boards; use a 4-layer PCB with a continuous ground plane below the part for EMI control.
This page synthesizes datasheet specifications, distributor availability, drop-in compatible PIC MCU alternatives, and practical hardware design notes not assembled on any single OEM page.
Bộ thay thế dễ dàng lắp đặt cho PIC18LF25K80-I/MM — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC18LF25K80-I/MM (cùng hình factor và footprint) — khác nhau ở Package, Core Architecture, Operating Temperature, Timers, ADC.
PIC18F26K80-I/MM
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Xem tài liệu →PIC18F25K80-I/MM
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Xem tài liệu →PIC18LF25K80T-I/MM
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Xem tài liệu →PIC18F25K80-I/SS
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Xem tài liệu →PIC18LF25K80-I/MM Tỷ lệ tối đa & tính chất điện
| Product Type | 8-bit Microcontroller (MCU) |
| Core Architecture | PIC18 Harvard RISC (enhanced) |
| Program Memory (Flash) | 32 KB (16K x 16) |
| RAM | 3.6 KB (3648 B) |
| EEPROM | 1 KB (data EEPROM) |
| Maximum CPU Speed | 64 MHz (16 MIPS) |
| Supply Voltage Range (LF) | 1.8 V to 5.5 V |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial, "I") |
| ADC | 12-bit, up to 8 channels |
| CTMU | Yes (Charge Time Measurement Unit) |
| CAN Interface | ECAN 2.0B active, 1 module |
| UART | 2 |
| SPI | 2 |
| I2C | 1 (MSSP) |
| Timers | 4 x 16-bit Timer/Capture/Compare |
| Hộp | 28-pin QFN-S (6x6 mm) with exposed pad |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 1 (per JEDEC J-STD-020) |
| Power Technology | NanoWatt XLP (extreme low power) |
| Trạng thái RoHS | Compliant |
| Lead Free | Yes |
Cấu hình chân PIC18LF25K80-I/MM
| Chân 1 | VDD — Positive supply (1.8-5.5V) |
| Chân 2 | RA5/AN4/CPS13 — Port A bit 5; analog input 4; CTMU CPS |
| Chân 3 | RA4/AN3/CPS12 — Port A bit 4; analog input 3; CTMU CPS |
| Chân 4 | RA3/AN2/VREF- — Port A bit 3; analog input 2; negative reference |
| Chân 5 | RA2/AN1/VREF+ — Port A bit 2; analog input 1; positive reference |
| Chân 6 | RA1/AN0/CPS6 — Port A bit 1; analog input 0; CTMU CPS |
| Chân 7 | RA0/CPS0 — Port A bit 0; CTMU CPS |
| Chân 8 | VSS — Ground |
| Chân 9 | OSC1/CLKI/RA7 — Crystal oscillator input or external clock |
| Chân 10 | OSC2/CLKO/RA6 — Crystal oscillator output; or FOSC/4 clock out |
| Chân 11 | RC0/SOSCO — Port C bit 0; secondary oscillator output |
| Chân 12 | RC1/SOSCI — Port C bit 1; secondary oscillator input |
| Chân 13 | RC2/CCP1 — Port C bit 2; Capture/Compare/PWM 1 |
| Chân 14 | RC3/REFO/SCL1 — Port C bit 3; reference clock out; I2C clock |
| Chân 15 | RC4/SDA1/SDI1 — Port C bit 4; I2C data; SPI data in |
| Chân 16 | RC5/SDO1 — Port C bit 5; SPI data out |
| Chân 17 | RC6/TX1/CK1 — Port C bit 6; UART1 TX; clock out |
| Chân 18 | RC7/RX1/DT1 — Port C bit 7; UART1 RX; data |
| Chân 19 | VSS — Ground |
| Chân 20 | VDD — Positive supply |
| Chân 21 | RB7/ECANRX — Port B bit 7; ECAN receive input |
| Chân 22 | RB6/ECANTX — Port B bit 6; ECAN transmit output |
| Chân 23 | RB5/AN11/CPS5 — Port B bit 5; analog input; CTMU CPS |
| Chân 24 | RB4/AN10/CPS4 — Port B bit 4; analog input; CTMU CPS |
| Chân 25 | RB3/CCP2/AN9 — Port B bit 3; Capture/Compare/PWM 2; analog input |
| Chân 26 | RB2/INT2/CANTX2 — Port B bit 2; external interrupt 2; alt CAN TX |
| Chân 27 | RB1/INT1/CANRX2 — Port B bit 1; external interrupt 1; alt CAN RX |
| Chân 28 | RB0/INT0 — Port B bit 0; external interrupt 0 |
Ứng dụng tiêu biểu
PIC18LF25K80-I/MM phù hợp cho 6 Áp dụngs: Automotive CAN Body and Chassis Modules, Building Automation Sensor Nodes, Industrial Sensor Hubs and Field Instruments, Low-Power IoT Edge Nodes, Capacitive Touch Human-Machine Interfaces, Battery-Backed Smart Meters and Data Loggers.
Automotive CAN Body and Chassis Modules
The PIC18LF25K80-I/MM is engineered for AEC-grade CAN networks where its integrated ECAN 2.0B controller (with 6 hardware acceptance masks and 16-bit timestamps) handles up to 1 Mbit/s bus traffic without CPU intervention. The wide 1.8-5.5V range survives cranking transients when paired with a 5V regulator, while the NanoWatt XLP sleep currents (sub-uA) keep quiescent draw within automotive parasitic budgets. The exposed thermal pad and 28-QFN footprint suit compact body controllers behind dashboards.
Được đề xuất
Building Automation Sensor Nodes
For HVAC and lighting-control fieldbus nodes the device's LF 1.8V minimum supply enables long-life battery or energy-harvesting designs (solar, Pelty, thermal). The 12-bit ADC with CTMU drives capacitive touch and humidity interfaces without an external timer IC, while the ECAN module provides robust wiring-bus connectivity for building automation. Designers commonly pair the chip with a Microchip MCP2515 or on-chip ECAN over twisted-pair copper, achieving <1 mA average current in duty-cycled sensor mode.
Được đề xuất
Industrial Sensor Hubs and Field Instruments
In 4-20 mA loop-powered transmitters and RS-485/CAN-modbus gateways, the PIC18LF25K80-I/MM serves as the local intelligence hub. Its 64 MHz/16 MIPS performance lets the chip run calibration, linearization, and HART-style protocol stacks in software, while the 12-bit ADC quantizes sensor inputs at high conversion rates. Industrial EMI immunity is reinforced by the QFN ground paddle tied to a continuous PCB ground plane on layer 2.
Được đề xuất
Low-Power IoT Edge Nodes
Battery-powered IoT edge devices leverage the NanoWant XLP technology for sleep currents under 100 nA (typical 20 nA in RTCC mode), letting coin-cell deployments run for years. The integrated ECAN supports sub-GHz or wired IoT fieldbuses in industrial settings, while software UART/SPI/I2C handle short-range radio modules (BLE, LoRa, Sub-GHz). The PIC18 LF voltage range supports energy-harvesting rails from thermoelectric or photovoltaic cells directly into VDD.
Được đề xuất
Capacitive Touch Human-Machine Interfaces
The integrated CTMU peripheral provides constant current to capacitive electrodes whose discharge time is measured by the 12-bit ADC. This makes the PIC18LF25K80-I/MM a single-chip touch controller for white-good front panels, medical device keypads, and industrial HMIs. The CTMU supports both self-capacitance (touch buttons) and mutual-capacitance (sliders/proximity) topologies with wake-on-touch capability, perfect for home appliances and consumer products.
Được đề xuất
Battery-Backed Smart Meters and Data Loggers
For utility meters, water/gas metering, and remote data loggers, the LF 1.8V minimum supply allows direct operation from a single Li coin cell. The microcontroller's 1 KB EEPROM holds calibration constants and tamper counters across decades, while ECAN or SPI gives backhaul to a concentrator. With duty-cycled ADC sampling the MCU can run from a 220 mAh coin cell for 10+ years, paired with a Microchip MCP79410 RTCC for timekeeping.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18LF25K80-I/MM — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC18F26K80-I/MM | PIC18LF26K80-I/MM | PIC18F25K80-I/MM | PIC18LF25K80T-I/MM | PIC18F25K80-I/SS |
|---|---|---|---|---|---|---|
| Package | 28-QFN-S (6x6 mm) | 28-QFN-S (6x6 mm) - same | 28-QFN-S (6x6 mm) - same | 28-QFN-S (6x6 mm) - same | 28-QFN-S (6x6 mm) - same | SSOP-28 - same logical pinout, different PCB footprint |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 32 KB | 64 KB (+100%) | 64 KB (+100%) | 32 KB (same) | 32 KB (same) | 32 KB (same) |
| RAM | 3.6 KB | 4 KB (+11%) | 4 KB (+11%) | 3.6 KB (same) | 3.6 KB (same) | 3.6 KB (same) |
| Supply Voltage Range | 1.8 V to 5.5 V (LF) | 2.0 V to 5.5 V (F) | 1.8 V to 5.5 V (LF - same) | 2.0 V to 5.5 V (F) | 1.8 V to 5.5 V (LF - same) | 2.0 V to 5.5 V (F) |
| Maximum Frequency | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS |
| ECAN Module | 1 x ECAN 2.0B | 1 x ECAN 2.0B | 1 x ECAN 2.0B | 1 x ECAN 2.0B | 1 x ECAN 2.0B | 1 x ECAN 2.0B |
| 12-bit ADC Channels | 8 | 8 (same) | 8 (same) | 8 (same) | 8 (same) | 8 (same) |
| AEC-Q100 Qualified | No (Industrial grade) | No (Industrial grade) | No (Industrial grade) | No (Industrial grade) | No (Industrial grade) | No (Industrial grade) |
Bảo phân biệt quan trọng
- Lowest voltage range in the K80 family (vsPIC18F25K80-I/MM (F variant))
- Standard 32 KB Flash at lower supply voltage (vsPIC18LF26K80-I/MM (64 KB))
- Integrated CTMU supports capacitive touch without external timer (vsPIC18F25K80-I/SS (SSOP package))
Ghi chú thiết kế
Estimated: VDD decoupling must include both a 100 nF ceramic (high-frequency) and a 1 uF bulk ceramic located within 3 mm of pins 1 and 20. NanoWatt XLP sleep currents drop below 100 nA when configured for RTCC-only retention; remember that each enabled peripheral contributes bias current and disable unused modules via PMD registers. When powered from a switching regulator, place the LDO close to VDD to bypass switching noise that disrupts ADC accuracy.
The 28-QFN package exposes a center thermal pad that must be soldered to a continuous PCB copper pour. With 6x6 mm area and 4-layer 2 oz copper, theta_JA reaches approximately 36 C/W (per Microchip package outline) - sufficient for the device's modest 100 mW dissipation. For full industrial -40 C to +85 C operation above 50 MHz, ensure adequate copper area on the top and bottom layers stitched with thermal vias.
Do not skip configuration word programming: the PIC18LF25K80-I/MM ships with internal oscillator disabled by default, and unprogrammed CW1/CW2 leaves the part running at 4 MHz FRC. Configure WDT, code protection, and ICSP pins via CONFIG registers before locking the Flash. When migrating from older PIC18F devices, note the LF voltage minimum: running below 1.8 V requires F variant.
Route ECANTX/ECANRX differential pair to the CAN transceiver with 100 ohm controlled impedance and equal trace lengths within 50 mil. Keep clock traces (OSC1/OSC2) short and surrounded by a ground guard ring. Place the 28-QFN ground paddle on the same net as VSS pin 8 and 19, with at least 4 thermal vias stitching to inner ground plane.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product declaration. Industrial grade -40 C to +85 C; not AEC-Q100 qualified - choose AEC-Q100 K22/K40 grades for automotive.