PIC18LF4480T-I/PT - 8-Bit 40MHz 16KB Flash MCU | Microchip
MPN： PIC18LF4480T-I/PT ✓ 啟用中PIC18LF4480T-I/PT 概覽
A PIC18 microcontroller is an 8-bit Harvard-architecture RISC device family from Microchip Technology, belonging to the broader microcontroller (MCU) class within power management and embedded processing semiconductor hierarchies. PIC18 devices use separate program and data buses for simultaneous instruction fetch and operand access, delivering deterministic throughput up to 10 MIPS at 40 MHz and offering Enhanced Flash with 100,000-cycle endurance plus self-programmability in-application.
Key features of this part include 16 KB on-chip flash, 768-byte SRAM, 256-byte EEPROM, two 8-bit and three 16-bit timers, 10-bit A/D converter with up to 11 channels, ECAN module for CAN 2.0B active/passive, MSSP for SPI/I²C, and a USART with LIN support. The 44-pin TQFP (PT) package exposes up to 36 I/O pins, supports ICD (in-circuit debugging), and carries the industrial temperature grade -40 °C to +85 °C.
The architecture employs a 16-bit instruction word with 8-bit data path, an 8-level deep hardware stack, and a priority level interrupt controller, enabling responsive event handling in real-time control loops. The LF silicon is optimized for low-voltage operation down to 2.0 V, suitable for battery-powered and 3.3 V designs without a 5 V boost stage.
Typical applications include industrial automation (CAN node endpoints, sensor conditioning), automotive body electronics (LIN/CAN nodes, BCMs), appliance control, building automation, and embedded CAN bridges. Its wide voltage range also enables portable instrumentation and battery-monitoring subsystems.
Designers should bias VDD with a 100 nF decoupling cap placed within 5 mm of the pin and route analog/digital grounds carefully when using ADC channels to avoid reference drift. For long CAN bus stubs, use 120 Ω termination at each end and keep stubs under 30 cm.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design considerations drawn from Microchip datasheets, helping engineers accelerate PIC18LF4480T-I/PT evaluation and BOM decisions.
直接替換替代品，適用於 PIC18LF4480T-I/PT — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC18LF4480T-I/PT （相同外形與佔位） — 差異在於 Package, Timers, ADC, Core Architecture, I/O Pins.
PIC18LF4480-I/PT
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查看資料表 →PIC18LF4580T-I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC18F4580T-I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC18LF4580-I/PT
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查看資料表 →PIC18LF4480T-I/PT 最大額定值與電氣特性
| Core Architecture | PIC18, 8-bit RISC Harvard |
| Maximum CPU Frequency | 40 MHz (10 MIPS) |
| Program Memory | 16 KB (8K x 16) Enhanced Flash |
| Data RAM | 768 bytes |
| Data EEPROM | 256 bytes |
| I/O Pins | Up to 36 |
| ADC | 10-bit, up to 11 channels |
| CAN | ECAN 2.0B active/passive |
| Serial Interfaces | USART (LIN), MSSP (SPI/I²C) |
| Timers | 2 x 8-bit, 3 x 16-bit |
| Supply Voltage Range | 2.0 V to 5.5 V |
| 工作溫度 | -40 °C to +85 °C (Industrial) |
| 封裝 | 44-pin TQFP (10x10 mm), Tape & Reel |
| 安裝類型 | Surface Mount |
| Instruction Word | 16-bit |
| Hardware Stack | 31 levels |
| MSL 等級 | 3 |
| Lead-Free / RoHS | Yes (compliant) |
| Debug Interface | ICD (In-Circuit Debug) |
PIC18LF4480T-I/PT 腳位配置
| 腳位 1 | RC7/RX/DT — I/O pin / USART RX / MSSP data |
| 腳位 2 | RD0 — I/O port D bit 0 |
| 腳位 3 | RD1 — I/O port D bit 1 |
| 腳位 4 | RD2 — I/O port D bit 2 |
| 腳位 5 | RD3 — I/O port D bit 3 |
| 腳位 6 | RC0 — I/O port C bit 0 |
| 腳位 7 | RC1 — I/O port C bit 1 |
| 腳位 8 | RC2 — I/O port C bit 2 |
| 腳位 9 | RC3 — I/O port C bit 3 |
| 腳位 10 | RC4 — I/O port C bit 4 |
| 腳位 11 | RC5 — I/O port C bit 5 |
| 腳位 12 | RC6/TX/CK — I/O pin / USART TX / MSSP clock |
| 腳位 13 | RC7/RX/DT — I/O pin / USART RX / MSSP data |
| 腳位 14 | RB0/INT0 — I/O port B bit 0 / external interrupt 0 |
| 腳位 15 | RB1/INT1 — I/O port B bit 1 / external interrupt 1 |
| 腳位 16 | RB2/INT2 — I/O port B bit 2 / external interrupt 2 |
| 腳位 17 | RB3/INT3 — I/O port B bit 3 / external interrupt 3 |
| 腳位 18 | RB4 — I/O port B bit 4 |
| 腳位 19 | RB5 — I/O port B bit 5 |
| 腳位 20 | RB6/PGC — I/O port B bit 6 / ICD clock |
| 腳位 21 | RB7/PGD — I/O port B bit 7 / ICD data |
| 腳位 22 | VSS — Ground reference |
| 腳位 23 | VDD — Positive supply voltage (2.0-5.5V) |
| 腳位 24 | RA0/AN0 — I/O port A bit 0 / analog input 0 |
| 腳位 25 | RA1/AN1 — I/O port A bit 1 / analog input 1 |
| 腳位 26 | RA2/AN2/VREF- — I/O port A bit 2 / analog input 2 / VREF- |
| 腳位 27 | RA3/AN3/VREF+ — I/O port A bit 3 / analog input 3 / VREF+ |
| 腳位 28 | RA4/T0CKI — I/O port A bit 4 / Timer0 clock |
| 腳位 29 | RA5/AN4 — I/O port A bit 5 / analog input 4 |
| 腳位 30 | OSC1/CLKI — Crystal oscillator input / external clock |
| 腳位 31 | OSC2/CLKO — Crystal oscillator output |
| 腳位 32 | RE0/RD — I/O port E bit 0 / CAN RX |
| 腳位 33 | RE1/CANTX — I/O port E bit 1 / CAN TX |
| 腳位 34 | RE2 — I/O port E bit 2 |
| 腳位 35 | MCLR/VPP — Master clear / programming voltage |
| 腳位 36 | RA6 — I/O port A bit 6 |
| 腳位 37 | RA7 — I/O port A bit 7 |
| 腳位 38 | RD4 — I/O port D bit 4 |
| 腳位 39 | RD5 — I/O port D bit 5 |
| 腳位 40 | RD6 — I/O port D bit 6 |
| 腳位 41 | RD7 — I/O port D bit 7 |
| 腳位 42 | VSS — Ground reference |
| 腳位 43 | VDD — Positive supply voltage (2.0-5.5V) |
| 腳位 44 | NC — Not connected (per datasheet) |
典型應用
PIC18LF4480T-I/PT 適用於 6 應用s: Industrial CAN Node Endpoint, Automotive Body Electronics (LIN/CAN Node), Appliance Control Board, Building Automation Gateway, Battery-Powered Sensor Node, Embedded CAN-to-UART Bridge.
Industrial CAN Node Endpoint
The PIC18LF4480T-I/PT is well-suited as a CAN bus node endpoint in industrial automation because it integrates ECAN 2.0B supporting standard and extended identifiers with bit rates up to 1 Mbit/s, plus 16 KB flash for CANopen stack fragments and 768-byte RAM for PDO buffers. Operating from 2.0 V to 5.5 V enables deployment on 3.3 V sensor rails without level shifters, and 36 I/O pins accept multiple sensor inputs. Place the MCU near the bus connector with a 120 Ω termination at the bus ends; stub length should remain under 30 cm to suppress reflections. Compared with external CAN controllers, the integrated ECAN reduces BOM by eliminating a standalone CAN transceiver-less MCU interface stage.
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Automotive Body Electronics (LIN/CAN Node)
For automotive body electronics such as door modules, mirror controllers, and seat nodes, the PIC18LF4480T-I/PT integrates both a USART with LIN 1.3/2.0 support and ECAN 2.0B, plus a 10-bit ADC for potentiometer and switch sampling. The 2.0 V to 5.5 V supply range accommodates cranking transients above 5 V when paired with a wide-Vin LDO. Industrial temperature grade (-40 °C to +85 °C) covers cabin environments; for under-hood AEC-Q100 zones, choose a Q100-qualified variant. Hardware multiplication and 10 MIPS throughput enable fast LIN schedule handling without software bottlenecks in body-domain applications.
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Appliance Control Board
The PIC18LF4480T-I/PT serves washing-machine, dishwasher, and induction-cooktop controllers thanks to its 16 KB flash storing user-interface state machines, 768-byte RAM buffering ADC readings, and 36 I/O pins driving relays, triacs, and segment displays. The Enhanced Flash supports in-application firmware updates, useful for post-sale bug-fix campaigns without service intervention. The 40 MHz core offers enough MIPS to run zero-crossing detection, triac timing, and UART diagnostics in a single chip, eliminating external logic and shrinking the BOM.
推薦
Building Automation Gateway
For BACnet, Modbus, or KNX-style building automation gateways, the PIC18LF4480T-I/PT acts as a protocol bridge with USART, SPI, and I²C peripherals interfacing to RS-485, sensor, and keypad modules. Its 16 KB flash holds compact protocol stacks, while 36 I/O drive status LEDs and accept dry-contact inputs. Wide 2.0-5.5 V supply lets the gateway accept 24 VAC rectified supplies through a small LDO, simplifying installation in legacy panels without rewiring.
推薦
Battery-Powered Sensor Node
Battery-driven wireless or wired sensor nodes benefit from the PIC18LF4480T-I/PT LF silicon because it operates down to 2.0 V, enabling direct Li-Ion discharge use without boost converters. The 10-bit ADC with up to 11 channels multiplexes thermistor, voltage-divider, and current-sense inputs, while 36 I/O drive indicator LEDs and interrupt sources. With sleep modes, average current can be reduced below typical RF sensor radio standby, extending service intervals. The 16 KB flash supports BLE/HID-over-GATT fragments alongside sensor-fusion firmware.
推薦
Embedded CAN-to-UART Bridge
Use the PIC18LF4480T-I/PT as a compact CAN-to-UART bridge for retrofit industrial nodes by routing ECAN 2.0B messages to RS-232/RS-485 via the USART. The 16 KB flash holds the CAN-ID filter list and a small command interpreter, while 768-byte RAM absorbs burst frames before forwarding. Hardware CRC offload on the ECAN reduces CPU overhead, freeing cycles for the UART byte stream at 115200 baud or higher. The 44-pin TQFP and 2.0-5.5 V supply make retrofit into legacy 24 V cabinets straightforward with only a small LDO.
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推薦產品摘要
工程參考資料，適用於 PIC18LF4480T-I/PT — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC18LF4480-I/PT | PIC18F4480T-I/PT | PIC18LF4580T-I/PT | PIC18F4580T-I/PT | PIC18LF4580-I/PT |
|---|---|---|---|---|---|---|
| Package | 44-pin TQFP (10x10 mm) | 44-pin TQFP (10x10) - same | 44-pin TQFP (10x10) - same | 44-pin TQFP (10x10) - same | 44-pin TQFP (10x10) - same | 44-pin TQFP (10x10) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Supply Voltage Range | 2.0 V to 5.5 V (LF) | 2.0 V to 5.5 V | 4.2 V to 5.5 V (F) | 2.0 V to 5.5 V | 4.2 V to 5.5 V | 2.0 V to 5.5 V |
| Program Flash | 16 KB | 16 KB | 16 KB | 32 KB | 32 KB | 32 KB |
| Data RAM | 768 bytes | 768 bytes | 768 bytes | 1536 bytes | 1536 bytes | 1536 bytes |
| EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| CAN Peripheral | ECAN 2.0B active/passive | ECAN 2.0B | ECAN 2.0B | ECAN 2.0B | ECAN 2.0B | ECAN 2.0B |
| Packaging | Tape & Reel | Tray | Tape & Reel | Tape & Reel | Tape & Reel | Tray |
主要差異化特點
- Integrated ECAN 2.0B peripheral (對比PIC18LF4520T-I/PT)
- Low-voltage LF silicon down to 2.0 V (對比PIC18F4480T-I/PT)
- Smaller flash/RAM footprint for lean firmware (對比PIC18LF4580T-I/PT)
- Wider I/O count at 36 pins (對比PIC18LF4585T-I/PT (40-pin))
設計說明
Place a 100 nF decoupling capacitor within 5 mm of each VDD pin (pins 23 and 43), plus a bulk 1-10 uF tantalum or ceramic cap on the same net. The PIC18LF4480T-I/PT datasheet specifies that noise on VDD directly couples into ADC readings via the internal bandgap; for precision analog applications, add a ferrite bead and 10 uF cap on the analog AVDD rail if available. Estimated: at 40 MHz and 5V supply, typical IDD is 15-20 mA active, less than 1 uA in sleep - verify with actual workload.
Route the CAN lines (RE0/CANRX, RE1/CANTX) symmetrically and match length to within 5 mm. Keep CAN traces away from switching nodes and crossing high-dV/dt signals; place a 120 Ω termination at each end of the bus, not at stubs. For the ECAN module, configure the CiA-118 standard bit timing for 125 kbps automotive networks, or 1 Mbps for industrial CANopen. The MCLR pin (pin 35) requires a 10 kΩ pull-up to VDD and a 100 nF cap to ground if in-circuit debugging is required.
Do not exceed 5.5 V on any VDD pin; the LF variant is rated 2.0-5.5 V but absolute maximum is 6.5 V with permanent damage risk. Do not configure unused I/O as outputs driving low without pull-ups - floating inputs can draw excess current. Ensure the configuration bits correctly select the LF (low-voltage) mode and not the F (4.2-5.5V) configuration, otherwise operation below 4.2 V becomes unstable. Brown-out reset (BOR) should remain enabled for industrial deployments to prevent undefined execution at low supply.
The 44-pin TQFP package dissipates heat primarily through the die flag. Estimated: at 5 V, 40 MHz, full I/O toggling, IDD is approximately 16 mA yielding 80 mW dissipation; junction-to-ambient thermal resistance is around 50 C/W for the 10x10 TQFP, producing a 4 C rise. At extended -40 °C to +85 °C industrial range, derate operating frequency below 40 MHz if multiple I/O are loaded to maintain junction temperature below 125 C.
合規資訊
RoHS and lead-free per Microchip product page; industrial temperature grade -40 °C to +85 °C. Not AEC-Q100 qualified; select AEC-Q100 automotive variants for under-hood designs.