PIC18F448-E/P - 8-bit MCU 16KB Flash CAN 40-DIP | Microchip
Référence : PIC18F448-E/P ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $9.1 | $9,10 |
| 10 | $8.05 | $80,50 |
| 100 | $7.1 | $710,00 |
| 500 | $6.3 | $3 150,00 |
| 1 000 | $5.8 | $5 800,00 |
PIC18F448-E/P Présentation
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.
Alternatives de remplacement direct pour PIC18F448-E/P — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC18F448-E/P (même facteur de forme et même empreinte) — différant par Operating Temperature, Package, Timers, RoHS Status, Program Memory (Flash).
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC18F4480-E/P
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$3.79 / unité
Voir la fiche technique →PIC18F448-I/P
✅ Remplacement direct✓ En stock
$4.42 / unité
Voir la fiche technique →PIC18F458-I/P
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$7.45 / unité
Voir la fiche technique →PIC18F4420-E/P
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$2.55 / unité
Voir la fiche technique →PIC18F4320-I/P
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$4.05 / unité
Voir la fiche technique →PIC18F448-E/P Valeurs maximales et caractéristiques électriques
| 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 |
| Tension d'alimentation | 4.2 V to 5.5 V |
| Température de fonctionnement | -40 °C to +125 °C (Extended "-E") |
| Boîtier | 40-pin PDIP (0.600"/15.24 mm) |
| Type de montage | 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 |
| Statut RoHS | Compliant (current Microchip product) |
Configuration des broches de PIC18F448-E/P
| Broche 1 | MCLR/VPP — Master Clear (Reset) input or programming voltage |
| Broche 2 | RA0/AN0 — PORTA bit 0 / Analog input 0 / CANRX |
| Broche 3 | RA1/AN1 — PORTA bit 1 / Analog input 1 / CANTX |
| Broche 4 | RA2/AN2/VREF- — PORTA bit 2 / Analog input 2 / VREF- |
| Broche 5 | RA3/AN3/VREF+ — PORTA bit 3 / Analog input 3 / VREF+ |
| Broche 6 | RA4/TOCKI — PORTA bit 4 / Timer0 clock input |
| Broche 7 | RA5/AN4 — PORTA bit 5 / Analog input 4 |
| Broche 8 | OSC1 — Crystal/resonator input |
| Broche 9 | OSC2 — Crystal/resonator output |
| Broche 10 | RC0/T1OSO — PORTC bit 0 / Timer1 oscillator output |
| Broche 11 | RC1/T1OSI — PORTC bit 1 / Timer1 oscillator input |
| Broche 12 | RC2/CCP1 — PORTC bit 2 / Capture-Compare-PWM 1 |
| Broche 13 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Broche 14 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Broche 15 | RC5/SDO — PORTC bit 5 / SPI data out |
| Broche 16 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock |
| Broche 17 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data |
| Broche 18 | RD0/PSP0 — PORTD bit 0 / Parallel Slave Port bit 0 |
| Broche 19 | RD1/PSP1 — PORTD bit 1 / Parallel Slave Port bit 1 |
| Broche 20 | RD2/PSP2 — PORTD bit 2 / Parallel Slave Port bit 2 |
| Broche 21 | RD3/PSP3 — PORTD bit 3 / Parallel Slave Port bit 3 |
| Broche 22 | RD4/PSP4 — PORTD bit 4 / Parallel Slave Port bit 4 |
| Broche 23 | RD5/PSP5 — PORTD bit 5 / Parallel Slave Port bit 5 |
| Broche 24 | RD6/PSP6 — PORTD bit 6 / Parallel Slave Port bit 6 |
| Broche 25 | RD7/PSP7 — PORTD bit 7 / Parallel Slave Port bit 7 |
| Broche 26 | VSS — Ground (digital) |
| Broche 27 | VDD — Positive supply (digital, 5 V) |
| Broche 28 | RB0/INT0 — PORTB bit 0 / External interrupt 0 |
| Broche 29 | RB1/INT1 — PORTB bit 1 / External interrupt 1 |
| Broche 30 | RB2/INT2 — PORTB bit 2 / External interrupt 2 |
| Broche 31 | RB3/INT3 — PORTB bit 3 / External interrupt 3 |
| Broche 32 | RB4 — PORTB bit 4 |
| Broche 33 | RB5 — PORTB bit 5 |
| Broche 34 | RB6 — PORTB bit 6 / ICPGC |
| Broche 35 | RB7 — PORTB bit 7 |
| Broche 36 | RE0/RD — PORTE bit 0 / Parallel Slave Port read |
| Broche 37 | RE1/WR — PORTE bit 1 / Parallel Slave Port write |
| Broche 38 | RE2/CS — PORTE bit 2 / Parallel Slave Port chip select |
| Broche 39 | AVDD — Analog positive supply |
| Broche 40 | AVSS — Analog ground |
Applications typiques
PIC18F448-E/P convient pour 7 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC18F448-E/P — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- Integrated ECAN 2.0B controller (vs no CAN module) (vs PIC18F4320-I/P)
- Extended -40 to +125 C temperature grade (vs PIC18F448-I/P)
- Same 40-pin PDIP pinout as larger family (vs PIC18F458-I/P (32 KB Flash variant))
Notes de conception
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.
Informations de conformité
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.
