PIC18LF448-I/L - 8-bit 40MHz MCU 16KB Flash 44-PLCC | Microchip
MPN: PIC18LF448-I/L ✓ فعالPIC18LF448-I/L جائزہ
A PIC microcontroller (Peripheral Interface Controller) is a Harvard-architecture RISC MCU family originally developed by Microchip. Within that taxonomy, the PIC18F line is the high-performance 8-bit tier (16-bit instruction word, 8-bit data path) that adds hardware multiply, C-compiler-friendly architecture, and on-chip peripherals such as CAN, USB, and ADC. The PIC18LF448 sits in the sub-family with on-board CAN 2.0B, making it a fit point between the basic PIC18F442 and the higher-pin PIC18F458.
Key features include 34 digital I/O pins, an internal 10-bit ADC, two analog comparators, a CAN 2.0B controller, two USART modules, a Master SSP (SPI/I2C), three timers and a 10-bit PWM module with capture/compare. Brown-out Reset (BOR), Low-Voltage Detect (LVD), Power-On Reset (POR) and a Watchdog Timer (WDT) give the part fault-recovery capability suitable for industrial control loops and automotive body electronics.
Architecturally, the PIC18LF448 uses a 16-bit instruction path with an 8-bit data bus, 32-level hardware stack, and 8 x 8 hardware multiplier, allowing efficient C code generation. The LF core runs at 10 MHz at 2.0V and 40 MHz at 5V, and the in-circuit serial programming (ICSP) interface permits field firmware updates through just two pins.
Typical applications include CAN-node automotive body modules, HVAC fan controllers, industrial sensor hubs, small motor-control boards and low-power instrumentation nodes. The combination of on-chip CAN, EEPROM and PLCC through-hole package makes the part a long-life-cycle fit for industrial backplanes.
When designing, ensure the CAN bus uses proper 120-ohm termination at each end, place a 100 nF decoupling cap close to each VDD/VSS pair, and keep oscillator traces short. The LF silicon tolerates 2.0V to 5.5V, so a single LDO can power both MCU and 5V sensors. This page combines distributor pricing, drop-in alternative cross-references, and PCB design guidance not bundled in the datasheet PDF.
کے لیے ڈراپ اِن متبادل PIC18LF448-I/L — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں PIC18LF448-I/L (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Core Architecture, Mounting Type, Operating Temperature, Package, I/O Pins.
PIC18LF448-I/PT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18F448-I/L
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18F448A-I/L
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC18LF458-I/L
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC18LF442-I/L
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18LF448-I/L زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core Architecture | PIC 8-bit RISC (Harvard) |
| Family | PIC18F |
| Program Memory (Flash) | 16 KB (8K x 16 instructions) |
| Data SRAM | 768 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Speed | 40 MHz |
| Operating Voltage Range | 2.0 V to 5.5 V |
| I/O Pins | 34 |
| Timers | 4 (Timer0/1/2/3) |
| Communication | CAN 2.0B, 2x USART, MSSP (SPI/I2C) |
| Comparators | 2 analog comparators |
| پیکیج | 44-pin PLCC (16.59 x 16.59 mm) |
| آپریٹنگ درجہ حرارت | -40C to +85C (Industrial) |
| ماؤنٹنگ ٹائپ | Through-Hole (J-Lead) |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
| RoHS اسٹیٹس | Compliant |
PIC18LF448-I/L پن کنفیگریشن
| پن 1 | MCLR — Master Clear (Reset) input, active-low |
| پن 2 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| پن 3 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| پن 4 | RA2/AN2/VREF- — PORTA bit 2 / Analog input 2 / DAC negative reference |
| پن 5 | RA3/AN3/VREF+ — PORTA bit 3 / Analog input 3 / DAC positive reference |
| پن 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| پن 7 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / SPI Slave Select |
| پن 8 | RE0/RD/AN5 — PORTE bit 0 / Parallel port read / Analog input 5 |
| پن 9 | RE1/WR/AN6 — PORTE bit 1 / Parallel port write / Analog input 6 |
| پن 10 | RE2/CS/AN7 — PORTE bit 2 / Parallel port chip select / Analog input 7 |
| پن 11 | VDD — Positive supply voltage |
| پن 12 | VSS — Ground reference |
| پن 13 | OSC1/CLKI — Crystal oscillator input / external clock input |
| پن 14 | OSC2/CLKO — Crystal oscillator output / clock output |
| پن 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| پن 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| پن 17 | RC2/CCP1 — PORTC bit 2 / Capture Compare PWM 1 |
| پن 18 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| پن 19 | RD0/PSP0/C1IN+ — PORTD bit 0 / Parallel Slave Port data bit / Comparator 1 non-inverting input |
| پن 20 | RD1/PSP1/C1IN- — PORTD bit 1 / Parallel Slave Port data bit / Comparator 1 inverting input |
| پن 21 | RD2/PSP2/C2IN+ — PORTD bit 2 / Parallel Slave Port data bit / Comparator 2 non-inverting input |
| پن 22 | RD3/PSP3/C2IN- — PORTD bit 3 / Parallel Slave Port data bit / Comparator 2 inverting input |
| پن 23 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| پن 24 | RC5/SDO — PORTC bit 5 / SPI data out |
| پن 25 | RC6/TX/CK — PORTC bit 6 / USART asynchronous transmit / USART synchronous clock |
| پن 26 | RC7/RX/DT — PORTC bit 7 / USART asynchronous receive / USART synchronous data |
| پن 27 | RD4/PSP4 — PORTD bit 4 / Parallel Slave Port data bit |
| پن 28 | RD5/PSP5/P1B — PORTD bit 5 / Parallel Slave Port data bit / PWM output 1B |
| پن 29 | RD6/PSP6/P1C — PORTD bit 6 / Parallel Slave Port data bit / PWM output 1C |
| پن 30 | RD7/PSP7/P1D — PORTD bit 7 / Parallel Slave Port data bit / PWM output 1D |
| پن 31 | VSS — Ground reference |
| پن 32 | VDD — Positive supply voltage |
| پن 33 | RB0/INT0/FLT0 — PORTB bit 0 / External interrupt 0 / PWM fault input |
| پن 34 | RB1/INT1 — PORTB bit 1 / External interrupt 1 |
| پن 35 | RB2/INT2/CANTX — PORTB bit 2 / External interrupt 2 / CAN bus transmit |
| پن 36 | RB3/INT3/CANRX — PORTB bit 3 / External interrupt 3 / CAN bus receive |
| پن 37 | RB4 — PORTB bit 4 (interrupt-on-change) |
| پن 38 | RB5 — PORTB bit 5 (interrupt-on-change) |
| پن 39 | RB6/PGC — PORTB bit 6 / ICSP clock |
| پن 40 | RB7/PGD — PORTB bit 7 / ICSP data |
| پن 41 | NC — Not connected (per datasheet) |
| پن 42 | NC — Not connected (per datasheet) |
| پن 43 | NC — Not connected (per datasheet) |
| پن 44 | NC — Not connected (per datasheet) |
عام استعمالات
PIC18LF448-I/L کے لیے موزوں ہے 6 ایپلیکیشنs: Automotive CAN Node Body Electronics, Industrial HVAC Fan Controller, Sensor Hub with CAN Bus Aggregation, Small Motor Control Board, Low-Power Instrumentation Node, Industrial Backplane PLCC Module.
Automotive CAN Node Body Electronics
The PIC18LF448-I/L's integrated CAN 2.0B controller supports up to 1 Mbps bit rates, ideal for body-control modules on CAN bus networks. Its 2.0V-5.5V LF supply lets the MCU share a single LDO with 3.3V sensors, while 16 KB of flash covers typical door/seat/lighting logic. Decoupling 100 nF on each VDD pin and a 120-ohm CAN termination keep the bus EMI-compliant.
تجویز کردہ
Industrial HVAC Fan Controller
Industrial HVAC controllers benefit from the PIC18LF448-I/L's hardware PWM (10-bit, 2 channels), 10-bit ADC for temperature feedback, and industrial -40C to +85C rating. With 16 KB flash and 768 B SRAM, the MCU can run a closed-loop PID in C while driving TRIAC or IGBT motor drivers via PWM. The 44-pin PLCC through-hole package survives high-vibration environments better than fine-pitch SMD alternatives.
تجویز کردہ
Sensor Hub with CAN Bus Aggregation
For aggregating multiple analog/digital sensors onto a CAN bus, the PIC18LF448-I/L offers 34 digital I/O lines plus its 10-bit ADC and MSSP (SPI/I2C) for connecting external sensors. The 256-byte EEPROM allows per-node calibration storage. The LF voltage range lets a single rail power 3.3V sensors and 5V actuators while the MCU arbitrates CAN traffic with built-in acceptance filters.
تجویز کردہ
Small Motor Control Board
Stepper and BLDC motor control leverages the PIC18LF448-I/L's three timers, 2-channel 10-bit PWM, and quadrature encoder inputs on the IOC ports. With 40 MHz CPU throughput the part can execute field-oriented control loops up to a few kHz, and the LF silicon runs from 2.0V allowing single-cell Li-ion packs. The PLCC socket footprint enables field-replaceable modules on the production line.
تجویز کردہ
Low-Power Instrumentation Node
Battery-powered instrumentation nodes take advantage of the PIC18LF448-I/L's 2.0V minimum VDD, allowing two AA cells or a single Li-ion cell. The integrated USART plus MSSP enables wired or wireless link layers via low-power RF transceivers, and the BOR/LVD/POR/WDT safety chain provides graceful brown-out recovery for unattended sensor installations.
تجویز کردہ
Industrial Backplane PLCC Module
PLCC through-hole sockets remain popular in industrial backplanes where field-replaceable modules reduce MTTR. The PIC18LF448-I/L's 44-pin PLCC can be inserted in a low-cost IC socket, and its CAN or USART ports bridge to the backplane bus. With 100K flash endurance and -40C to +85C industrial rating, the part supports decades-long industrial lifetimes typical of building automation and process control.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC18LF448-I/L — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC18LF448-I/PT | PIC18F448-I/L | PIC18F448A-I/L | PIC18LF458-I/L | PIC18LF442-I/L |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin PLCC (16.59 x 16.59 mm) | 44-pin TQFP (SMD) | 44-pin PLCC - same | 44-pin PLCC - same | 44-pin PLCC - same | 44-pin PLCC - same |
| Flash Memory | 16 KB | 16 KB | 16 KB | 16 KB | 32 KB | 16 KB |
| SRAM | 768 bytes | 768 bytes | 768 bytes | 768 bytes | 1536 bytes | 768 bytes |
| CAN Controller | Yes (CAN 2.0B) | Yes | Yes | Yes | Yes | No |
| Operating Voltage | 2.0V to 5.5V | 2.0V to 5.5V | 4.2V to 5.5V | 4.2V to 5.5V | 2.0V to 5.5V | 2.0V to 5.5V |
| Maximum CPU Clock | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| I/O Pins | 34 | 34 | 34 | 34 | 34 | 34 |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
اہم امتیازی خصوصیات
- Integrated CAN 2.0B controller in a 44-pin PLCC footprint (بمقابلہPIC18LF442-I/L)
- Wide 2.0V to 5.5V LF voltage range versus standard 4.2V to 5.5V F-range parts (بمقابلہPIC18F448-I/L)
- Drop-in pin compatibility with both PLCC through-hole and TQFP SMD packages (بمقابلہPIC18LF448-I/PT)
ڈیزائن نوٹس
Place a 100 nF ceramic decoupling capacitor within 5 mm of each VDD/VSS pair (pins 11/12 and 31/32) and a single bulk 10 uF tantalum or ceramic at the package entry. The LF silicon draws approximately 16 mA at 40 MHz/5V, so a 100 mA LDO is sufficient; for battery applications pair with an MCP1700 LDO for sub-microamp quiescent current.
Keep the crystal traces between pins 13 (OSC1) and 14 (OSC2) short and symmetric. Guard the crystal with a ground ring and avoid routing signal traces under it. For CAN pins 35 (CANTX) and 36 (CANRX), route a differential pair to the MCP2551 transceiver with 120-ohm characteristic impedance and place the 120-ohm termination resistor within 10 mm of each bus end.
Configuration bits must be programmed to enable the internal oscillator or to specify the external clock range - leaving them at the default (HS oscillator) on the LF variant can prevent startup below 2.0V. Also verify the BOR is enabled for the application supply range; the LF silicon supports BOR voltages down to 2.0V but requires the LBOR fuse correctly set.
تعمیل کی معلومات
RoHS compliance per Microchip product page. The 'I' industrial temperature grade (-40C to +85C) is rated for industrial environments but is not AEC-Q100 qualified; for AEC-Q100 automotive use, choose the PIC18F458 or PIC18F448A with 'E' extended temperature grade.
