PIC18F258-I/SP - 8-bit 40MHz 32KB Flash MCU w/ CAN | Microchip
N.º de pieza: PIC18F258-I/SP ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $9.42 | $9,42 |
| 10 | $8.95 | $89,50 |
| 100 | $8.1 | $810,00 |
| 500 | $7.32 | $3.660,00 |
| 1.000 | $6.55 | $6.550,00 |
PIC18F258-I/SP Descripción general
A microcontroller (MCU) is a single-chip computer containing a CPU core, non-volatile program memory (Flash/ROM), volatile data memory (SRAM), and peripheral interfaces (ADC, timers, communication blocks). The PIC18F258 belongs to Microchip's PIC18 family, positioned hierarchically as: PIC18 -> 8-bit PIC architecture -> PIC microcontroller -> microcontroller -> embedded computing IC -> semiconductor. PIC18 parts use an enhanced RISC instruction set that supports C-compilable code while retaining the simple, deterministic interrupt model that made the PIC architecture famous.
Key features include the integrated CAN 2.0A/B peripheral (one of the defining features of the 'F258' variant versus the 'F248' which lacks CAN), 8 channels of 10-bit A/D conversion, capture/compare/PWM modules, a parallel slave port, and 100 ns instruction execution. The 28-pin SPDIP package is the through-hole variant, ideal for prototyping, breadboarding, and legacy industrial designs that need a robust, socketable part.
The CAN bus (Controller Area Network) is a robust multi-drop serial protocol originally developed for automotive in-vehicle networks (ISO 11898) and now ubiquitous in industrial automation, building controls, and medical devices. The PIC18F258 is one of Microchip's early, broadly-deployed CAN-enabled MCUs and remains a frequent choice for legacy industrial CAN nodes, automotive aftermarket ECUs, and educational kits where its stable toolchain (MPLAB X, MPLAB ICD 5, XC8 compiler) and 28-pin DIP form factor accelerate development.
Typical applications include industrial CAN node controllers, automotive sensor interfaces, building automation nodes (BACnet/HVAC), low-speed motor controllers, and educational/development boards. The 32 KB Flash supports medium-complexity state machines and protocol stacks. Design consideration: the SPDIP package is much larger than modern QFN/SSOP PIC18 equivalents, so footprint reuse requires planning when modernizing to a 28-pin SOIC variant (PIC18F258-I/SO).
Alternativas directas para PIC18F258-I/SP — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con PIC18F258-I/SP (mismo factor de forma y huella) — difiere en ADC, Package, Operating Temperature, Timers, Core Architecture.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC18F258-I/SO
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC18F2580-I/SP
✅ Sustitución directa✓ En stock
$4.55 / unidad
Ver hoja de datos →PIC18F2480-I/SP
✅ Sustitución directa✓ En stock
$4.1 / unidad
Ver hoja de datos →PIC18F2685-I/SP
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC18F2520-I/SP
✅ Sustitución directa✓ En stock
$3.33 / unidad
Ver hoja de datos →PIC18F2455-I/SP
✅ Sustitución directa✓ En stock
$4.65 / unidad
Ver hoja de datos →PIC18F258-I/SP Valores máximos y características eléctricas
| Core Architecture | PIC 8-bit RISC |
| Family | PIC18F |
| Program Memory (Flash) | 32 KB (16K x 16) |
| Data RAM | 1536 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Frequency | 40 MHz |
| Performance (MIPS) | 10 MIPS |
| Supply Voltage (VDD) | 2.0 V to 5.5 V |
| Temperatura de funcionamiento | -40C to +85C (industrial) |
| Digital I/O Pins | 23 |
| ADC | 8-channel, 10-bit |
| CAN Module | CAN 2.0A/B (active) |
| UART/USART | 1x USART |
| SPI / I2C (MSSP) | 1x MSSP (SPI or I2C) |
| Timers | 4 (Timer0/1/2/3) |
| Capture/Compare/PWM | 2 CCP + 1 ECCP |
| Encapsulado | 28-pin SPDIP (SP), through-hole |
| Tipo de montaje | Through-Hole (DIP) |
| Instruction Execution Time | 100 ns |
Configuración de pines de PIC18F258-I/SP
| Pin 1 | MCLR — Master Clear (reset) input, active low |
| Pin 2 | RA0/AN0 — Digital I/O / Analog input channel 0 |
| Pin 3 | RA1/AN1 — Digital I/O / Analog input channel 1 |
| Pin 4 | RA2/AN2/VREF- — Digital I/O / Analog input channel 2 / ADC VREF- |
| Pin 5 | RA3/AN3/VREF+ — Digital I/O / Analog input channel 3 / ADC VREF+ |
| Pin 6 | RA4/T0CKI — Digital I/O / Timer0 clock input |
| Pin 7 | RA5/AN4/SS — Digital I/O / Analog input channel 4 / SPI slave select |
| Pin 8 | OSC1/CLKI — Crystal oscillator input / external clock input |
| Pin 9 | OSC2/CLKO — Crystal oscillator output / clock output |
| Pin 10 | INT0/RB0 — External interrupt 0 / Digital I/O RB0 |
| Pin 11 | RB1 — Digital I/O RB1 |
| Pin 12 | RB2 — Digital I/O RB2 |
| Pin 13 | RB3/PGM — Digital I/O RB3 / Low-voltage programming input |
| Pin 14 | RB4 — Digital I/O RB4 |
| Pin 15 | RB5 — Digital I/O RB5 |
| Pin 16 | RB6/PGC — Digital I/O RB6 / ICD clock |
| Pin 17 | RB7/PGD — Digital I/O RB7 / ICD data |
| Pin 18 | VSS — Ground reference |
| Pin 19 | VDD — Positive supply voltage (2.0V to 5.5V) |
| Pin 20 | RC0/T1OSO — Digital I/O RC0 / Timer1 oscillator output |
| Pin 21 | RC1/T1OSI — Digital I/O RC1 / Timer1 oscillator input |
| Pin 22 | RC2/CCP1 — Digital I/O RC2 / CCP1 PWM output |
| Pin 23 | RC3/SCK/SCL — Digital I/O RC3 / SPI clock / I2C clock |
| Pin 24 | RC4/SDI/SDA — Digital I/O RC4 / SPI data in / I2C data |
| Pin 25 | RC5/SDO — Digital I/O RC5 / SPI data out |
| Pin 26 | RC6/TX/CK — Digital I/O RC6 / USART async TX / sync clock |
| Pin 27 | RC7/RX/DT — Digital I/O RC7 / USART async RX / sync data |
| Pin 28 | CANTX — CAN bus transmit output |
Aplicaciones típicas
PIC18F258-I/SP es adecuado para 6 aplicacións: Industrial CAN Node Controller, Automotive Sensor Interface / Aftermarket ECU, Building Automation / HVAC Node, Educational / Development Boards, Low-Speed Motor Controller, Legacy Industrial Controller Modernization.
Industrial CAN Node Controller
The PIC18F258-I/SP is purpose-built for CAN 2.0A/B industrial nodes where its integrated hardware CAN controller and 28-pin DIP form factor accelerate prototyping. Its 32 KB Flash comfortably fits CANopen, DeviceNet, or J1939 protocol stacks alongside application code, while the 1.5 KB RAM buffers incoming and outgoing CAN messages at typical 125-500 kbps industrial bit rates. The 8-channel 10-bit ADC reads sensor inputs (temperature, pressure, position) at up to 30 ksps, and the 23 digital I/O drive status LEDs, relays, and optocouplers directly at 25 mA per pin. The DIP package lets engineers swap parts during firmware bring-up without rework. For ISO 11898-2 physical layer, pair the F258 with the MCP2551 or TJA1050 transceiver on the same PCB.
Recomendado
Automotive Sensor Interface / Aftermarket ECU
The PIC18F258-I/SP fits aftermarket automotive sensor modules and small ECUs that need reliable CAN communication with the vehicle bus. Its -40C to +85C industrial temperature grade tolerates under-hood thermal stress, and the 32 KB Flash holds OBD-II PID parsing plus sensor calibration tables. The integrated CAN 2.0B controller supports 11-bit and 29-bit identifiers, which is required for both standard automotive messaging and extended diagnostics. The 8-channel 10-bit ADC handles multiple analog sensors (thermistors, MAP sensors, O2 amplifiers), while the MSSP port drives a SPI accelerometer or external EEPROM. The 28-pin SPDIP package is ideal for low-volume automotive retrofits and educational vehicle electronics kits.
Recomendado
Building Automation / HVAC Node
The PIC18F258-I/SP is well suited to BACnet MS/TP or proprietary HVAC control nodes because its 32 KB Flash accommodates BACnet object libraries plus custom scheduling logic, and the CAN hardware can be reconfigured for EIA-485 transceivers via software bit-banging on the MSSP/UART lines. The 8 ADC channels read multiple analog inputs such as duct temperature, humidity, and pressure transducers simultaneously, while the CCP/ECCP modules generate PWM outputs for damper and valve actuators. The DIP package enables field-replacement on legacy building management installations where technicians prefer socketable MCUs. For mains-powered HVAC panels, the 2.0 V to 5.5 V supply range permits direct connection to 3.3 V sensor networks and 5 V logic without level shifters.
Recomendado
Educational / Development Boards
Microchip's PIC18F258-I/SP is a favorite on university microcontroller courses and hobbyist development boards because the 28-pin SPDIP package fits standard solderless breadboards without surface-mount rework. The 32 KB Flash accommodates substantial C-language coursework (XC8 compiler produces code that fits), while the CAN peripheral teaches students real industrial networking - a topic absent from simpler 8-bit parts. The 8-channel ADC and PWM modules cover analog and digital control lab exercises. Reference designs from Microchip's academic program include the PICDEM CAN kit, which pairs the F258 with an MCP2551 transceiver and demonstrates basic CAN node-to-node communication.
Recomendado
Low-Speed Motor Controller
The PIC18F258-I/SP drives small brushed DC motors, stepper motors, and fans through its ECCP (Enhanced Capture/Compare/PWM) modules, which generate up to 10-bit PWM at 40 MHz core clock with programmable dead-band control for H-bridges. The 32 KB Flash fits trapezoidal commutation tables or simple field-oriented control loops for sensorless BLDC applications. The 8-channel 10-bit ADC reads back-EMF sensing circuits at 30 ksps with the 10 MIPS core providing sufficient bandwidth. The integrated CAN bus enables integration into industrial multi-axis systems. Engineers designing 24 V motor drivers typically pair the F258 with gate drivers like the MCP14A0154 or IRS2003 for the power stage.
Recomendado
Legacy Industrial Controller Modernization
When modernizing 1990s-vintage industrial controllers built around older PIC microcontrollers, the PIC18F258-I/SP provides the same DIP through-hole form factor for socketed PCB replacement while adding modern peripherals like CAN 2.0B, 10-bit ADC, and 32 KB Flash - typically 8x the memory of the legacy part. The PIC18 instruction set is largely backwards-compatible with PIC16 code, easing firmware migration, and Microchip's MPLAB X IDE with the XC8 compiler supports both legacy and new codebases. The 8-channel ADC and PWM modules replace multiple discrete components from older designs, reducing BOM cost. For users with existing PIC18F458 40-pin designs, the F258 is pin-compatible at the register level.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC18F258-I/SP — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC18F258-I/SO | PIC18F2580-I/SP | PIC18F2480-I/SP | PIC18F2685-I/SP |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SPDIP (SP) | 28-SOIC wide (SO) | 28-SPDIP (SP) - same | 28-SPDIP (SP) - same | 28-SPDIP (SP) - same |
| Program Memory | 32 KB Flash | 32 KB Flash | 32 KB Flash | 16 KB Flash | 96 KB Flash |
| CAN Module | CAN 2.0A/B | CAN 2.0A/B | CAN 2.0A/B (enhanced) | CAN 2.0A/B | CAN 2.0A/B (enhanced) |
| ADC | 8-ch, 10-bit | 8-ch, 10-bit | 8-ch, 10-bit (with auto-acquisition) | 8-ch, 10-bit | 8-ch, 10-bit (higher sampling) |
| RAM | 1536 bytes | 1536 bytes | 1536 bytes | 768 bytes | 3328 bytes |
| EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 1024 bytes |
| Max CPU Frequency | 40 MHz | 40 MHz | 32 MHz | 32 MHz | 40 MHz |
| I/O Pins | 23 | 23 | 23 | 23 | 23 |
Diferenciadores clave
- Integrated CAN 2.0A/B hardware controller on a 28-pin DIP part (frente a PIC18F2520-I/SP)
- 32 KB Flash versus the lower-memory F2480 family (frente a PIC18F2480-I/SP)
- Through-hole 28-SPDIP package supports prototyping and socketed designs (frente a PIC18F258-I/SO)
- Mature, stable PIC18 toolchain with MPLAB X and XC8 compiler (frente a Cross-brand ARM Cortex-M0 alternatives (STM32F0, LPC1100))
Notas de diseño
Estimated: The PIC18F258-I/SP typically draws 15-25 mA active at 40 MHz/5V and 1-5 microamps in sleep mode. Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 19) and a bulk 10 uF tantalum or ceramic capacitor on the same rail. For CAN bus applications, isolate the PIC power from the transceiver power with a ferrite bead to prevent bus switching transients from resetting the MCU.
When designing the PCB for the 28-SPDIP package, leave at least 0.1 inch (2.54 mm) between adjacent pads for through-hole soldering and standard 0.6-inch DIP socket footprints. The crystal oscillator pins (OSC1 pin 8, OSC2 pin 9) require short traces to the crystal and load capacitors - keep trace length under 5 mm to avoid noise coupling into the ADC. The CANTX pin (pin 28) trace to the CAN transceiver should be impedance-controlled (50 ohm) for high-speed CAN, though most industrial designs at 125 kbps tolerate direct routing.
Do not forget the MCLR pull-up resistor (typically 10 kohm to VDD) - the PIC18 will not start without it. Also, configure the configuration bits (CONFIG1H, CONFIG2L, etc.) correctly for the oscillator mode and watchdog timer; misconfigured config bits are the #1 cause of 'dead' PIC18 designs. For CAN applications, configure the CAN module's BRG (bit rate generator) values to match the bus baud rate, and verify with an oscilloscope that the CANTX pin produces clean dominant/recessive transitions before connecting to a live bus.
Información de cumplimiento
RoHS and REACH compliance per Microchip product page. Industrial temperature grade (-I) only - the F258 is not AEC-Q100 qualified for automotive safety-critical applications. For automotive-grade CAN PIC18 MCUs, refer to PIC18F2585-I/SP automotive variants.
