MCP2515-I/ST - Stand-Alone CAN Controller with SPI, TSSOP-20 | Microchip
N.º de pieza: MCP2515-I/ST ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $2.85 | $2,85 |
| 10 | $2.55 | $25,50 |
| 100 | $2.18 | $218,00 |
| 500 | $1.92 | $960,00 |
| 1.000 | $1.65 | $1.650,00 |
MCP2515-I/ST Descripción general
A CAN controller is a protocol engine that handles the framing, bit stuffing, error handling, and acknowledgement of CAN messages on the bus, offloading this real-time burden from the host MCU. The MCP2515 family sits between a microcontroller and a CAN transceiver (such as the MCP2551 or MCP2562), making it ideal for adding a CAN interface to MCUs that lack a built-in CAN peripheral. Within the network taxonomy, it lives under CAN protocol controllers → serial protocol ICs → interface ICs → wired communication semiconductors.
Key features include two acceptance masks and six acceptance filters for selective message acceptance, two buffer sizes with prioritized message storage, a loopback mode for self-test, and hardware support for time-triggered protocols. According to the manufacturer datasheet, it operates from a single 2.7V–5.5V supply, consumes only 10 mA active and 1 µA standby typical, and integrates CLKOUT/FCLK outputs plus maskable interrupt and wake-up pins. Compared to its predecessor MCP2510, the MCP2515 adds faster SPI throughput and data-byte filtering.
Typical applications cover automotive body and infotainment networks, industrial automation, medical instrumentation requiring CAN connectivity, IoT sensor gateways, and embedded hobbyist platforms such as Arduino and Raspberry Pi CAN HATs. Designers benefit from the well-documented Microchip libraries that simplify bring-up.
When designing with this IC, ensure the SPI lines (SCK, MOSI, MISO, CS) are routed with characteristic impedance in mind and place decoupling capacitors within 1 cm of the VDD pin to meet CAN bus EMC requirements.
Alternativas directas para MCP2515-I/ST — 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 MCP2515-I/ST (mismo factor de forma y huella) — difiere en CAN Specification, Clock Output, Package, Host Interface, Mounting Type.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
MCP2515T-I/ST
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MCP2515T-E/ST
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MCP2515-I/SO
✅ Sustitución directa✓ En stock
$1.15 / unidad
Ver hoja de datos →MCP2515-E/ST
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MCP2515-I/P
✅ Sustitución directa✓ En stock
$1.78 / unidad
Ver hoja de datos →MCP2515-I/ST Especificaciones
| Product Type | Stand-alone CAN Controller |
| CAN Specification | CAN 2.0B (standard and extended frames) |
| Maximum Bus Speed | 1 Mb/s |
| Host Interface | SPI (up to 10 MHz) |
| Operating Voltage | 2.7 V to 5.5 V |
| Active Current | 10 mA typical |
| Standby Current | 1 µA typical |
| Acceptance Masks | 2 |
| Acceptance Filters | 6 |
| Receive Buffers | 2 with prioritization |
| Temperatura de funcionamiento | -40 °C to +85 °C (industrial) |
| Encapsulado | TSSOP-20 |
| Tipo de montaje | Surface Mount |
| Interrupt Output | Yes (INT pin, maskable) |
| Clock Output | CLKOUT / FCLK programmable |
| Lead-Free / RoHS | Yes, compliant |
Configuración de pines de MCP2515-I/ST
| Pin 1 | TXCAN — CAN transmit output to transceiver |
| Pin 2 | RXCAN — CAN receive input from transceiver |
| Pin 3 | CLKOUT — Programmable clock output |
| Pin 4 | SO — SPI MISO to host MCU |
| Pin 5 | SI — SPI MOSI from host MCU |
| Pin 6 | SCK — SPI clock from host MCU |
| Pin 7 | CS — SPI chip select (active low) |
| Pin 8 | RESET — Device reset input, active low |
| Pin 9 | VDD — Positive supply voltage, 2.7 V to 5.5 V |
| Pin 10 | VSS — Ground |
| Pin 11 | OSC2 — Crystal oscillator output |
| Pin 12 | OSC1 — Crystal oscillator input |
| Pin 13 | INT — Interrupt output to host MCU |
| Pin 14 | SCK_OUT — Programmable clock output / CLKOUT alt |
| Pin 15 | NC — Not connected (per datasheet) |
| Pin 16 | NC — Not connected (per datasheet) |
| Pin 17 | NC — Not connected (per datasheet) |
| Pin 18 | NC — Not connected (per datasheet) |
| Pin 19 | RX0BF — Receive buffer 0 interrupt pin |
| Pin 20 | TX0RTS — Transmit buffer 0 request-to-send pin |
Aplicaciones típicas
MCP2515-I/ST es adecuado para 6 aplicacións: Automotive CAN Bus Networks, Industrial Automation PLCs, Medical Device CAN Connectivity, IoT Sensor Gateways and Bridges, Robotics and Motion Control, Hobbyist and Maker Platforms (Arduino, Raspberry Pi).
Automotive CAN Bus Networks
The MCP2515-I/ST adds a CAN 2.0B interface to body-electronics and infotainment MCUs without a built-in CAN peripheral. Its 1 Mb/s bus speed covers the standard high-speed CAN automotive physical layer, and the SPI host interface simplifies connection to small microcontrollers. The 1 µA standby current suits always-on CAN nodes, while the industrial -40 °C to +85 °C rating handles under-hood and dashboard environments. Reference designs pair the MCP2515-I/ST with an external MCP2551 transceiver to drive CANH/CANL bus signals.
Recomendado
Industrial Automation PLCs
Programmable logic controllers use CAN as a deterministic field bus for sensor and actuator communication. The MCP2515-I/ST provides six acceptance filters that reduce host MCU interrupt overhead by pre-screening CAN traffic, freeing CPU cycles for control loops. Its 2.7 V to 5.5 V supply range integrates with both 3.3 V Cortex-M and 5 V legacy industrial controllers. The TSSOP-20 surface mount package supports automated assembly in volume PCBA lines, and the datasheet's loopback mode aids factory test and field diagnostics.
Recomendado
Medical Device CAN Connectivity
Patient monitors, infusion pumps, and lab analyzers increasingly use CAN for internal module communication because of its robust error detection. The MCP2515-I/ST provides hardware acceptance masks that reject traffic from other subsystems, reducing host MCU load and improving real-time performance. Two prioritized receive buffers ensure critical messages are not dropped under bus congestion. According to the manufacturer datasheet the part's industrial temperature grade and Pb-free construction meet medical device manufacturing compliance. The small TSSOP-20 footprint supports compact handheld medical hardware.
Recomendado
IoT Sensor Gateways and Bridges
Wireless sensor nodes often need a CAN backhaul to collect data from automotive, marine, or industrial equipment. The MCP2515-I/ST bridges a host Wi-Fi or LoRa MCU to a CAN bus via SPI, offloading framing, bit stuffing, and error handling so the gateway MCU only processes relevant messages. Its 1 µA standby current enables battery-powered bridges that wake on CAN interrupt, while the 10 MHz SPI throughput allows fast burst reads from the receive buffers. Reference designs in the datasheet show how to wire it with low-cost MCUs in compact IoT sensors.
Recomendado
Robotics and Motion Control
Multi-axis robots and CNC machines use CAN to coordinate servo drives and I/O modules over a single robust differential bus. The MCP2515-I/ST handles 1 Mb/s CAN traffic from a robot's central controller and provides hardware filters so only motion-update frames trigger host interrupts. Its two acceptance masks and six acceptance filters are enough to segment the bus into motion, sensor, and supervisory traffic without software overhead. Combined with the MCP2551 transceiver and a TSSOP-20 footprint, this enables compact robot-controller boards.
Recomendado
Hobbyist and Maker Platforms (Arduino, Raspberry Pi)
The MCP2515-I/ST powers the widely used Arduino CAN-bus shields and Raspberry Pi CAN HATs that let makers prototype CAN nodes cheaply. Because the SPI and CAN logic are industry-standard, the part works with open-source libraries such as mcp_can and the Arduino CAN library. The TSSOP-20 in industrial grade is robust enough for hobbyist projects that occasionally see lab or automotive temperature swings, and the 1 Mb/s bus speed lets students build fast CAN networks for lab demos and robot competitions.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para MCP2515-I/ST — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MCP2515T-I/ST | MCP2515T-E/ST | MCP2515-I/SO | MCP2515-E/ST | MCP2515-I/P |
|---|---|---|---|---|---|---|
| Package | TSSOP-20 | TSSOP-20 (same) | TSSOP-20 (same) | SOIC-20 (same die, wider body) | TSSOP-20 (same) | PDIP-20 (same die, through-hole) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CAN Specification | CAN 2.0B (1 Mb/s) | CAN 2.0B (1 Mb/s) | CAN 2.0B (1 Mb/s) | CAN 2.0B (1 Mb/s) | CAN 2.0B (1 Mb/s) | CAN 2.0B (1 Mb/s) |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| Temperature Range | -40 °C to +85 °C (industrial) | -40 °C to +85 °C | -40 °C to +125 °C (extended) | -40 °C to +85 °C | -40 °C to +125 °C (extended) | -40 °C to +85 °C |
| Packaging | Tube (industrial) | Tape-and-reel (2500 pcs) | Tape-and-reel | Tube | Tube | Tube (through-hole) |
| Acceptance Filters | 6 | 6 | 6 | 6 | 6 | 6 |
| SPI Frequency Max | 10 MHz | 10 MHz | 10 MHz | 10 MHz | 10 MHz | 10 MHz |
| RoHS / Pb-Free | Yes | Yes | Yes | Yes | Yes | Yes |
Diferenciadores clave
- Industrial-grade operating range with proven CAN 2.0B support (frente a MCP2510)
- Surface-mount TSSOP-20 form factor for compact automation designs (frente a MCP2515-I/P (PDIP-20))
- Two prioritized receive buffers for high-traffic CAN networks (frente a MCP2517FD-H/SL (CAN-FD variant))
Notas de diseño
Estimated: VDD pin current at 5 V active mode is approximately 10 mA at the SPI bus running at 10 MHz, so a 100 nF decoupling ceramic placed within 5 mm of VDD and a 10 µF bulk capacitor on the same rail are sufficient. In standby mode the device draws 1 µA typical, so power-rail leakage on the host MCU is not significant when the MCP2515-I/ST is shut down.
The TSSOP-20 package requires a 0.65 mm pitch land pattern. Place the crystal (or resonator) within 5 mm of OSC1/OSC2 and route traces to avoid crossing high-current digital signals, as the CAN clock drives baud-rate generation. Keep SCK/MOSI traces short and matched to avoid SPI timing violations at the 10 MHz maximum. Reference ground pours under the IC pads improve thermal dissipation and EMI.
Pair the MCP2515-I/ST with an MCP2551 or MCP2562 transceiver; the differential CANH/CANL traces must be routed as a 120 Ω impedance-matched pair, with stubs shorter than 100 mils to minimize reflections. Place TVS diodes and a common-mode choke on the bus connector for automotive EMI immunity. Always include a 60 Ω / 120 Ω termination resistor at each end of the bus.
Do not bypass the RESET pin on power-up; either drive it actively from the host MCU or use a 100 kΩ pull-up with a 100 nF capacitor to ensure a clean startup. The CS pin must be driven low for any SPI transaction; leaving it floating can cause spurious writes to the registers. Acceptance mask/filter configuration must be completed before any CAN transmission is enabled to avoid bus errors.
Información de cumplimiento
Per the Microchip product page the I/ST part is RoHS and Pb-free but is not AEC-Q100 qualified; for AEC-Q100 designs Microchip offers AEC-grade CAN-FD silicon. REACH and conflict-minerals disclosures are available through Microchip's product compliance portal.
