MCP2515T-I/ML - 1Mbps SPI CAN Controller | Microchip Technology
MPN： MCP2515T-I/ML ✓ 啟用中MCP2515T-I/ML 概覽
A CAN controller is a semiconductor that manages frame creation, arbitration, acknowledgment, error detection, and bus data movement according to the Controller Area Network standard. The MCP2515 belongs to the hierarchy of CAN controller, communication controller, interface IC, and semiconductor. Unlike a CAN physical-layer transceiver, it does not directly connect to the bus's differential CANH and CANL conductors. It instead exchanges commands and status data with a host processor over SPI while a separate transceiver converts the controller's logic signals to the physical bus.
The MCP2515 provides two receive buffers, acceptance masks, and acceptance filters for selecting CAN identifiers. These features help the host avoid processing irrelevant traffic. It also includes interrupt signaling, request-to-send control, programmable bit timing, loopback and silent modes, and a standby low-power state. A 1 Mbps bus rate supports demanding industrial and automotive networking, although the final operating rate depends on oscillator accuracy, transceiver characteristics, wiring, termination, and network topology.
The controller's SPI host interface provides an effective separation between real-time bus handling and host-side protocol software. The processor can configure bit timing and filters, place messages into transmit buffers, retrieve received frames, and read interrupt status without bit-banging the CAN bus. The exposed thermal pad provides a direct heat-transfer path to the PCB, while the small QFN footprint supports compact controller modules and embedded equipment. Internal timing references and external-clock arrangements must follow the manufacturer's pin and application guidance.
Typical uses include industrial automation equipment, vehicle diagnostic interfaces, building-control gateways, embedded motor-control systems, CAN-to-SPI bridges, and communications modules. It is especially appropriate when a microcontroller lacks a native CAN peripheral or when a dedicated controller allows the host processor to share communication tasks. A physical-layer transceiver such as an MCP2551-class device remains necessary in every practical CAN bus implementation.
Designers should follow the recommended decoupling, grounding, exposed-pad soldering, and high-speed layout practices in the manufacturer datasheet. Keep the SPI clock and signal routes compact, provide a low-impedance ground return, place input and output capacitors close to their pins, and connect the exposed pad to the ground plane with an adequate thermal-via pattern. Confirm oscillator and bit-timing settings at the intended bus speed because incorrect oscillator configuration or inadequate transceiver propagation delay can prevent reliable arbitration.
This product page combines the device's core protocol and package characteristics with practical integration guidance, verified sourcing links, and an honest assessment of available drop-in alternatives. It is intended to help engineers select the controller, plan its PCB implementation, and evaluate replacement options without confusing protocol equivalence with true package-level drop-in compatibility.
直接替換替代品，適用於 MCP2515T-I/ML — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： MCP2515T-I/ML （相同外形與佔位） — 差異在於 Package, Product Type, Supported Frame Types, CAN Specification, Maximum CAN Data Rate.
MCP2515-I/ML
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →MCP2515T-E/MLVAO
✅ 直接替換聯絡詢價
查看資料表 →MCP2515-E/MLVAO
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →MCP2515T-I/ML 規格
| Product Type | Stand-alone CAN controller |
| CAN Specification | CAN 2.0B |
| Maximum CAN Data Rate | 1 Mbps |
| Host Interface | SPI |
| 工作電源電壓 | 2.7 V to 5.5 V |
| 工作溫度 | -40°C to +85°C |
| Supported Frame Types | Standard data frames, extended data frames, and remote frames |
| Receive Buffer Count | 2 buffers |
| Receive Filtering | Masks and filters |
| 封裝 | 20-pin QFN, 4 x 4 mm |
| Package Height | 0.90 mm |
| Exposed Pad | Present |
| Technology | CMOS |
| Power Management Modes | Sleep and standby |
| RoHS 狀態 | Compliant |
| Order Packaging | Tape and reel |
MCP2515T-I/ML 腳位配置
| 腳位 1 | TXD — CAN transmit data input from the CAN transceiver |
| 腳位 2 | RXD — CAN receive data output to the CAN transceiver |
| 腳位 3 | INT — Interrupt request output to the host controller |
| 腳位 4 | GND — Ground connection |
| 腳位 5 | VDD — Power supply input |
| 腳位 6 | SCK — SPI serial clock input |
| 腳位 7 | SO — SPI slave output to the host controller |
| 腳位 8 | SI — SPI slave input from the host controller |
| 腳位 9 | GND — Ground connection |
| 腳位 10 | CLKIN — Clock input |
| 腳位 11 | NC — No connection |
| 腳位 12 | NC — No connection |
| 腳位 13 | NC — No connection |
| 腳位 14 | NC — No connection |
| 腳位 15 | NC — No connection |
| 腳位 16 | NC — No connection |
| 腳位 17 | RXBF — Receive buffer full status output |
| 腳位 18 | TXBF — Transmit buffer full status output |
| 腳位 19 | VDD — Power supply input |
| 腳位 20 | GND — Ground connection and exposed-pad thermal connection |
典型應用
MCP2515T-I/ML 適用於 6 應用s: Industrial Automation Controller, Vehicle Diagnostic Gateway, Building Control Network Gateway, Embedded Motor Control Interface, CAN-to-SPI Communication Module, Remote Sensor and Telemetry Node.
Industrial Automation Controller
The MCP2515T-I/ML fits industrial automation equipment that exchanges commands, sensor readings, and diagnostic events over a CAN bus. Its CAN 2.0B implementation handles standard frames, extended frames, and remote frames at rates up to 1 Mbps, while two receive buffers, masks, and filters help the host process selected identifiers efficiently. The SPI interface keeps communication logic separate from the control MCU, leaving that processor available for motion control, safety logic, or diagnostics. Operating from 2.7 V to 5.5 V supports both 3.3 V and 5 V embedded systems, and the -40°C to +85°C range suits industrial equipment. A compatible high-speed transceiver remains necessary, and the final 1 Mbps capability depends on correct bit timing, termination, grounding, and layout.
推薦
Vehicle Diagnostic Gateway
The MCP2515T-I/ML can provide a compact CAN protocol interface for vehicle diagnostic gateways that need to interface an existing microcontroller or application processor. It supports both 11-bit standard identifiers and 29-bit extended identifiers, allowing the gateway to handle powertrain, chassis, and body messages through configured filters. The SPI host interface permits message exchange and interrupt handling without requiring a CAN peripheral in the host processor. Its 1 Mbps maximum data rate covers common automotive CAN networks, while the compact 4 x 4 mm QFN package supports dense electronic control units. The controller itself is not a bus transceiver, so the design must also include an appropriate automotive CAN transceiver, robust power architecture, and protection appropriate to the vehicle environment.
推薦
Building Control Network Gateway
The MCP2515T-I/ML is well suited to building-control gateways that connect sensors, actuators, lighting controllers, and HVAC equipment through CAN. Hardware acceptance masks and filters allow the gateway to respond to relevant identifiers without burdening the host with every bus frame, while interrupt support can request service when a receive buffer or transmit event requires attention. The SPI interface connects efficiently to embedded controllers such as the STM32F103 family, and the 2.7 V to 5.5 V operating range supports common industrial logic levels. Its -40°C to +85°C specification covers many equipment rooms and control cabinets. For reliable operation, the gateway should use a suitable CAN transceiver, common-reference grounding strategy, surge protection, and a bus topology consistent with the intended CAN data rate.
推薦
Embedded Motor Control Interface
The MCP2515T-I/ML can serve as the communication controller beside a real-time motor-control processor. Command arbitration, frame acknowledgment, error handling, and identifier filtering are performed by the dedicated CAN controller, allowing the main MCU to focus on current-loop control, position tracking, and fault management. Support for 1 Mbps traffic is useful when a motor system exchanges rapid position or torque commands, although the selected bit timing must account for oscillator error and transceiver delay. Two receive buffers allow the host to organize priority traffic, while masks and filters reduce unwanted interrupts. A robust implementation requires a high-speed transceiver, precise grounding, short differential routes, correct termination, and careful separation of CAN routing from motor-switching nodes.
推薦
CAN-to-SPI Communication Module
The MCP2515T-I/ML is a natural choice for a compact CAN-to-SPI bridge module because the entire CAN protocol engine is contained in one device and the host interface is already SPI. A microcontroller can configure filters and bit timing, submit frames for transmission, receive accepted frames, and manage interrupts without implementing CAN bit timing in software. The 4 x 4 mm QFN package preserves board area in small interface modules, and the 2.7 V to 5.5 V operating range supports both 3.3 V and 5 V designs. The bridge still needs a CAN transceiver, input filtering or protection as required, and a stable clock source. Firmware must also handle the controller's status flags and interrupt conditions correctly to avoid missed frames or duplicate transmission attempts.
推薦
Remote Sensor and Telemetry Node
The MCP2515T-I/ML supports compact remote sensor nodes that publish measurements and receive configuration commands over a CAN network. Its hardware filtering limits interrupts to selected identifiers, and the SPI interface allows a low-power host MCU to control acquisition timing while the CAN controller manages bus communication. The -40°C to +85°C industrial range allows operation in protected cabinets, vehicles, and machinery, while the 3.3 V-compatible supply range can help simplify power design. The controller's 1 Mbps capability provides ample bandwidth for typical telemetry traffic, but designers should select a lower bit rate for long cables or poor EMI conditions. Reliable deployment also requires a suitable transceiver, correct common-mode grounding, protection for exposed installations, and firmware-based timeout handling for lost buses.
推薦
推薦產品摘要
工程參考資料，適用於 MCP2515T-I/ML — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | MCP2515-I/ML | MCP2515T-E/ML | MCP2515-E/ML |
|---|---|---|---|---|
| Package | 20-pin QFN, 4 x 4 mm | 20-pin QFN, 4 x 4 mm - same | 20-pin QFN, 4 x 4 mm - same | 20-pin QFN, 4 x 4 mm - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Device Type | Stand-alone CAN controller | Stand-alone CAN controller | Stand-alone CAN controller | Stand-alone CAN controller |
| CAN Specification | CAN 2.0B | CAN 2.0B | CAN 2.0B | CAN 2.0B |
| Maximum CAN Data Rate | 1 Mbps | 1 Mbps | 1 Mbps | 1 Mbps |
| Host Interface | SPI | SPI | SPI | SPI |
| Operating 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 |
| Temperature Grade | Industrial, -40°C to +85°C | Industrial grade ordering variant | Extended-temperature ordering variant | Extended-temperature ordering variant |
| Supported Frame Types | Standard, extended data, and remote frames | Standard, extended data, and remote frames | Standard, extended data, and remote frames | Standard, extended data, and remote frames |
| Receive Buffers | 2 buffers | 2 buffers | 2 buffers | 2 buffers |
主要差異化特點
- Dedicated CAN protocol engine preserves host processing capacity (對比STM32F103C8T6TR)
- Industrial temperature designation matches embedded equipment requirements (對比MCP2515T-E/ML)
- Same-footprint sourcing options reduce PCB redesign risk (對比MCP2515-I/SO)
設計說明
Place the CAN controller and its decoupling capacitors close to the associated pins. The manufacturer specifies a compact 4 x 4 mm QFN with an exposed pad, so power and ground connections must follow the recommended land pattern. Provide a continuous ground reference beneath the device, use short supply paths, and place bulk capacitance near the transceiver rather than relying on the controller's local capacitor to support the entire bus network.
Route SPI clock and data traces as a compact, controlled-length group with a continuous ground reference, and keep the CAN TXD and RXD paths away from switching nodes and high-current motor traces. The CAN differential pair belongs primarily to the physical-layer transceiver, but reducing its digital-interface length and crosstalk remains important. Avoid placing test-point stubs or unnecessary vias in critical signal paths when operating toward the 1 Mbps limit.
Treat the exposed pad as both an electrical connection and a thermal path. Apply the manufacturer's solder-paste and via-array recommendations to control voiding beneath the QFN, and connect the pad to a low-impedance ground plane. Estimated thermal performance depends on copper area, via count, airflow, and the controller's actual activity factor, so validate the final assembly under the worst operating condition rather than assuming the package alone guarantees the required junction temperature.
Do not treat the MCP2515T-I/ML as a complete CAN transceiver; add a compatible physical-layer transceiver, proper termination, and a shared reference ground. Program the bit-timing registers for the intended oscillator and bus rate, then verify propagation delay and tolerance across temperature. Also avoid confusing 3.3 V operation with 3.3 V SPI signal compatibility without checking the interface voltage limits in the manufacturer datasheet.
合規資訊
The product listing identifies the QFN package as lead-free plastic and identifies RoHS compliance. REACH, halogen-free status, and conflict-minerals status were not established.
