PIC18F448-E/P - 8-bit MCU 16KB Flash CAN 40-DIP | Microchip
MPN: PIC18F448-E/P ✗ סוף ייצורPIC18F448-E/P סקירה
An 8-bit microcontroller (MCU) is a programmable single-chip computer that processes data in 8-bit words and integrates a CPU, non-volatile program memory, volatile data memory, and programmable peripherals. PIC18F parts sit in the PIC18 family, which is Microchip's enhanced 8-bit architecture built on a modified Harvard core with hardware multiplier and 16-bit instruction word, and the broader PIC (Peripheral Interface Controller) family above it is one of the foundational microcontroller lineages in modern embedded design.
Key features include 25 MIPS peak throughput at 40 MHz, an internal 8 MHz oscillator with PLL options, 10-bit ADC up to 8 channels, a USART with LIN support, MSSP for SPI/I2C, two analog comparators, four timer modules, and a 10-channel PWM. The integrated ECAN module supports CAN 2.0B with eight transmit/receive mailboxes, enabling robust automotive and industrial networking without an external CAN controller.
The architecture combines the standard PIC18 instruction set with a hardware multiply routine in 8 cycles, a 31-level hardware stack, and a 16-bit wide program memory bus that lets the CPU fetch data from program memory in one cycle. The device has 36 digital I/O pins and on-chip debug via ICD, and runs from 4.2 V to 5.5 V (typical 5 V supply), reflecting its industrial-grade origin.
Typical applications include automotive body and chassis CAN nodes, industrial CAN-based sensor and actuator nodes, building automation gateways, HVAC controllers, and embedded HMI panels that benefit from the 40-pin through-hole format for prototype and retrofit designs.
When designing with this device, ensure your compiler selection migrates cleanly because the -E suffix marks the Extended temperature grade; the standard PIC18F448-I/P remains the commercial-grade alternative and is generally interchangeable electrically but should be selected against your ambient derating.
This page consolidates distributor pricing, drop-in same-package alternatives, and engineering design notes drawn from the manufacturer datasheet, so you can verify a board revision without re-deriving every spec.
חלופות תחליף ישיר עבור PIC18F448-E/P — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם PIC18F448-E/P (אותו גורם צורה וטביעת רגל) — שונים ב Operating Temperature, Package, Timers, RoHS Status, Program Memory (Flash).
PIC18F4480-E/P
✅ Drop-In ⚠️ מפרטים לא מאומתיםצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F448-I/P
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F458-I/P
✅ Drop-In ⚠️ מפרטים לא מאומתיםצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F4420-E/P
✅ Drop-In ⚠️ מפרטים לא מאומתיםצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F4320-I/P
✅ Drop-In ⚠️ מפרטים לא מאומתיםצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F448-E/P דירוגים מרביים ומאפיינים חשמליים
| Core Architecture | PIC (8-bit, Harvard) |
| Family | PIC18F |
| Core Clock Frequency | 40 MHz max |
| Program Memory | 16 KB (8K x 16) Flash (Enhanced) |
| RAM | 768 bytes |
| EEPROM | 256 bytes |
| מתח אספקה | 4.2 V to 5.5 V |
| טמפרטורת פעולה | -40 °C to +125 °C (Extended "-E") |
| מארז | 40-pin PDIP (0.600"/15.24 mm) |
| סוג הרכבה | Through-Hole (DIP-40) |
| Digital I/O Pins | 36 |
| ADC | 10-bit, up to 8 channels |
| CAN Module | ECAN (CAN 2.0B), 8 mailboxes |
| UART/USART | 1 x USART with LIN |
| SPI/I2C | MSSP (SPI / I2C) |
| Timers | 4 modules |
| Comparators | 2 analog |
| PWM Channels | Up to 10 channels |
| סטטוס RoHS | Compliant (current Microchip product) |
תצורת פינים של PIC18F448-E/P
| פין 1 | MCLR/VPP — Master Clear (Reset) input or programming voltage |
| פין 2 | RA0/AN0 — PORTA bit 0 / Analog input 0 / CANRX |
| פין 3 | RA1/AN1 — PORTA bit 1 / Analog input 1 / CANTX |
| פין 4 | RA2/AN2/VREF- — PORTA bit 2 / Analog input 2 / VREF- |
| פין 5 | RA3/AN3/VREF+ — PORTA bit 3 / Analog input 3 / VREF+ |
| פין 6 | RA4/TOCKI — PORTA bit 4 / Timer0 clock input |
| פין 7 | RA5/AN4 — PORTA bit 5 / Analog input 4 |
| פין 8 | OSC1 — Crystal/resonator input |
| פין 9 | OSC2 — Crystal/resonator output |
| פין 10 | RC0/T1OSO — PORTC bit 0 / Timer1 oscillator output |
| פין 11 | RC1/T1OSI — PORTC bit 1 / Timer1 oscillator input |
| פין 12 | RC2/CCP1 — PORTC bit 2 / Capture-Compare-PWM 1 |
| פין 13 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| פין 14 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| פין 15 | RC5/SDO — PORTC bit 5 / SPI data out |
| פין 16 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock |
| פין 17 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data |
| פין 18 | RD0/PSP0 — PORTD bit 0 / Parallel Slave Port bit 0 |
| פין 19 | RD1/PSP1 — PORTD bit 1 / Parallel Slave Port bit 1 |
| פין 20 | RD2/PSP2 — PORTD bit 2 / Parallel Slave Port bit 2 |
| פין 21 | RD3/PSP3 — PORTD bit 3 / Parallel Slave Port bit 3 |
| פין 22 | RD4/PSP4 — PORTD bit 4 / Parallel Slave Port bit 4 |
| פין 23 | RD5/PSP5 — PORTD bit 5 / Parallel Slave Port bit 5 |
| פין 24 | RD6/PSP6 — PORTD bit 6 / Parallel Slave Port bit 6 |
| פין 25 | RD7/PSP7 — PORTD bit 7 / Parallel Slave Port bit 7 |
| פין 26 | VSS — Ground (digital) |
| פין 27 | VDD — Positive supply (digital, 5 V) |
| פין 28 | RB0/INT0 — PORTB bit 0 / External interrupt 0 |
| פין 29 | RB1/INT1 — PORTB bit 1 / External interrupt 1 |
| פין 30 | RB2/INT2 — PORTB bit 2 / External interrupt 2 |
| פין 31 | RB3/INT3 — PORTB bit 3 / External interrupt 3 |
| פין 32 | RB4 — PORTB bit 4 |
| פין 33 | RB5 — PORTB bit 5 |
| פין 34 | RB6 — PORTB bit 6 / ICPGC |
| פין 35 | RB7 — PORTB bit 7 |
| פין 36 | RE0/RD — PORTE bit 0 / Parallel Slave Port read |
| פין 37 | RE1/WR — PORTE bit 1 / Parallel Slave Port write |
| פין 38 | RE2/CS — PORTE bit 2 / Parallel Slave Port chip select |
| פין 39 | AVDD — Analog positive supply |
| פין 40 | AVSS — Analog ground |
יישומים טיפוסיים
PIC18F448-E/P מתאים עבור 7 יישוםs: Industrial CAN-Based Sensor Node, Automotive Body and Chassis CAN Nodes, Building Automation Gateway Node, Embedded HMI / Control Panel Front End, DC Motor and Stepper Driver Controller, Engine Control Module Auxiliary / Sensor Front End, Test and Measurement CAN Bus Probe.
Industrial CAN-Based Sensor Node
The PIC18F448-E/P is well suited as the brain of an industrial 4-20 mA sensor that talks to a CAN bus. The integrated ECAN 2.0B module with eight mailboxes can transmit readings directly, removing the need for an external controller. The 10-bit ADC inputs analog process signals from sensor front ends, the 36 digital I/O drive LEDs, relays, and keypads, and the -40 to +125 C Extended temperature range handles factory ambient heat. Power consumption stays manageable for always-on nodes because the 5 V supply and ECAN backbone draw modest current.
מומלץ
Automotive Body and Chassis CAN Nodes
The device targets 5 V automotive body and chassis ECAN nodes such as door modules, HVAC controls, mirror controllers, and seat controllers. The ECAN module handles bus arbitration, error handling, and acceptance filtering per CAN 2.0B so messages from competing nodes do not overload the firmware. With 16 KB Flash, 768 B RAM, and 256 B EEPROM, the device can store node calibration constants such as trim values and DTC buffers in non-volatile memory. The 40-pin PDIP through-hole form factor suits legacy bus networks and field retrofit scenarios where sockets are preferred over reflow.
מומלץ
Building Automation Gateway Node
The PIC18F448-E/P can bridge BACnet, Modbus-equivalent, or proprietary sensor data onto a CAN backbone inside large commercial buildings. Its USART supports a secondary RS-485 link to legacy thermostats while ECAN drives the backbone, and the MSSP provides SPI/I2C for local sensor and EEPROM peripherals. 768 bytes of RAM handle small protocol buffers, and the firmware fits within the 16 KB Flash envelope. Extended temperature means the device survives plant rooms, attic plenums, and rooftop enclosures.
מומלץ
Embedded HMI / Control Panel Front End
Front-panel HMIs and control panels benefit from the PIC18F448-E/P's 36 digital I/O lines, the 10-bit ADC for reading potentiometers and analog inputs, and the 10-channel PWM for backlight, LED, and indicator dimming. The MSSP supports SPI to drive character or graphic LCDs and I2C to scan keypads with a port-expander. The 40-pin PDIP package eases hand-wired prototype panels and field serviceability, while the 5 V supply matches common LCD bias rails. ECAN provides connectivity to the host controller or supervisory PLC.
מומלץ
DC Motor and Stepper Driver Controller
The PIC18F448-E/P is a low-cost controller for small DC-motor and stepper subsystems whose commands must arrive over CAN. The ECAN module receives motion commands from a master controller, while PWM channels (up to 10) drive H-bridge gate drivers or stepper coil drivers. Two analog comparators provide overcurrent fault detection, and timers measure tachometer feedback without burdening the CPU. The Extended temperature grade keeps the device functional in enclosed motor housings.
מומלץ
Engine Control Module Auxiliary / Sensor Front End
Even though the device cannot drive full engine control, it is well suited as the analog front-end for sub-systems that feed main ECMs over CAN. Analog sensors are sampled by the 10-bit ADC and translated into CAN frames by the on-chip ECAN. Two analog comparators handle threshold detection of crank, knock, or oil-pressure sensors. 16 KB Flash holds scale-and-translate tables, while 256 B EEPROM stores calibration per motor batch. -40 to +125 C range handles under-hood compartments.
מומלץ
Test and Measurement CAN Bus Probe
The PIC18F448-E/P is a self-contained CAN probe for development benches and field diagnostics. ECAN captures traffic and stores it in RAM, while the USART streams the data to a PC over RS-232 for log analysis. The 10-bit ADC samples the bus during debugging for analog integrity checks, and MSSP drives a small character LCD for headless test stands. ECAN 2.0B compatibility lets the probe decode standard and extended identifiers used in commercial fleets, while 40-pin PDIP simplifies hand-soldered lab prototypes.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC18F448-E/P — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | PIC18F4480-E/P | PIC18F448-I/P | PIC18F458-I/P | PIC18F4420-E/P | PIC18F4320-I/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 40-pin PDIP | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same |
| Flash Memory | 16 KB | 32 KB | 16 KB | 32 KB | 16 KB | 8 KB |
| RAM | 768 B | 768 B | 768 B | 1536 B | 768 B | 768 B |
| CAN Module | ECAN 2.0B | ECAN 2.0B | ECAN 2.0B | ECAN 2.0B | ECAN 2.0B | None |
| Core Frequency | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Operating Temperature | -40C to +125C (Extended) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) |
| ADC | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels |
מבדילים עיקריים
- Integrated ECAN 2.0B controller (vs no CAN module) (לעומתPIC18F4320-I/P)
- Extended -40 to +125 C temperature grade (לעומתPIC18F448-I/P)
- Same 40-pin PDIP pinout as larger family (לעומתPIC18F458-I/P (32 KB Flash variant))
הערות תכנון
Estimated: at 40 MHz core and 5.0 V supply, the PIC18F448-E/P core current can reach ~15 mA in active mode; with 768 B RAM and 16 KB Flash typical, expect between 8-15 mA. Place a 100 nF decoupling cap within 5 mm of every VDD/AVDD pair and a 10 uF bulk cap near the package. For mixed-signal designs, separate AVDD from VDD with a ferrite bead to limit digital noise coupling into the analog rails. Brown-out Reset (BOR) should be left enabled to avoid code execution past 4.2 V.
Keep the oscillator traces short: OSC1 and OSC2 must be routed within a few mm of the MCU and confined over a local ground pour. The 40-pin PDIP has generous lead pitches (2.54 mm/0.1"), so signal integrity is straightforward, but the ECAN bus still requires a 120 Ω termination at each end and a transceiver such as the MCP2551 for CAN compliance. Use 4-layer boards only when the device sits near switching regulators; for can-only nodes 2-layer stack-up with good ground is acceptable.
The Extended -40 to +125 C grade is designed for industrial environments. In open-air DIP-40 layouts, the package dissipates roughly 1 W without a heatsink in still air; for sealed enclosures, derate to approximately 0.5 W. Provide vent paths or convection gaps and route thermal mass around the package leads. Although the device itself does not generate significant heat, its analog performance benefits from stable junction temperature.
Configuration word programming: leaving the oscillator mode set to HS instead of XT for low-frequency crystals causes a clock fault on startup. Always clear the watchdog in long-loop firmware and configure BOR for 4.2 V in 5 V systems. ECAN bit-timing must be set per the bus speed, and unused mailboxes should be discarded or cleared in the interrupt service routine to avoid spurious message flags.
מידע על תאימות
RoHS compliant per Microchip product page (current production). Not AEC-Q100 qualified; for AEC-Q100 automotive drop-ins consider PIC18F4580-I/P or PIC18F26K80 series.
