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Microchip Technology MCP25025-I/SL
- Part No.:
- MCP25025-I/SL
- Manufacturer:
- Microchip Technology
- Category:
- I/O Expanders
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MCP25025-I/SL.pdf
- Description:
- IC XPNDR 4MHZ CAN 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,382
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Product details
Overview
MCP25025-I/SL from Microchip Technology is a CAN v2.0B I/O expander IC that operates as a standalone CAN node without requiring an external microcontroller. It supports programmable bit rates up to 1 Mb/s, features one programmable mask and two acceptance filters, includes three auto-transmit buffers and two message reception buffers, and provides eight general-purpose I/O lines with transmit-on-pin-change capability - used in industrial sensor networks and distributed control systems.
For engineers reviewing the MCP25025-I/SL datasheet, MCP25025-I/SL pinout, MCP25025-I/SL application, or MCP25025-I/SL equivalent, this page delivers verified technical context, real-world design meaning for key specs, validated pin functions, confirmed alternatives, and supply-ready availability details - all grounded in Microchip's DS20001664E documentation.
Technical Context
The MCP25025-I/SL integrates a full CAN v2.0B protocol engine with double-buffered receive architecture, automatic wake-up on bus traffic, and error management logic supporting Error-Active, Error-Passive, and Bus-Off states. Its bit timing logic uses programmable time quanta (TQ), synchronization jump width (SJW), and phase segments to achieve precise sample point control across variable bus conditions.
It implements hardware-based edge detection and threshold-triggered transmission via its eight GPIOs, with non-volatile configuration memory that loads automatically at power-up. The device supports optional 1-wire CAN bus operation (enabled on MCP250X5 variants) and allows runtime reconfiguration via CAN bus messages - eliminating need for external programming hardware during field updates.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CAN Compliance | Fully implements ISO 11898-1 CAN v2.0B protocol with standard and extended identifier support |
| Max Bit Rate | 1 Mb/s - enables high-speed communication in automotive and industrial real-time networks |
| Power Supply | 2.7V to 5.5V - compatible with both 3.3V and 5V system rails without level-shifting |
| Active Current | 10 mA typical - minimizes power draw in continuously operating CAN nodes |
| Standby Current | 30 µA in CAN Sleep mode - supports ultra-low-power wake-on-bus-traffic operation |
| I/O Lines | 8 GP I/O pins individually configurable as input or output - enables flexible peripheral interfacing |
| Transmit Buffers | 3 prioritized auto-transmit buffers - ensures deterministic response to digital edge or analog threshold events |
| Receive Buffers | 2 dedicated message reception buffers + Message Assembly Buffer (MAB) - prevents overrun under sustained bus load |
Pinout & Package
Package: 14-pin SOIC (150 mil) - surface-mount compatible with standard industrial PCB assembly processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GP0/AN0 | General-purpose I/O / Analog input channel 0 | Configurable bidirectional TTL pin; serves as analog input only on MCP2505X devices - not active on MCP25025-I/SL |
| GP1/AN1 | General-purpose I/O / Analog input channel 1 | Configurable bidirectional TTL pin; analog function disabled on MCP25025-I/SL per family differentiation |
| VDD | Power supply input | Connects to 2.7–5.5V rail; powers internal CAN engine, logic, and I/O drivers |
| TXCAN/TXRXCAN | CAN transmit output / 1-wire TX/RX | Primary CAN TX output; functions as bidirectional 1-wire bus line on MCP250X5 variants like MCP25025-I/SL |
| RXCAN/NC* | CAN receive input / Not connected | Standard CAN RX input; NC in 1-wire mode - confirms MCP25025-I/SL supports optional single-wire operation |
| GP5/VREF+ | General-purpose I/O / External reference voltage input | TTL I/O pin; VREF+ function inactive on MCP25025-I/SL due to absence of A/D module |
| GP4/VREF- | General-purpose I/O / External reference voltage input | TTL I/O pin; VREF- function inactive on MCP25025-I/SL |
| GP6/CLKOUT | General-purpose I/O / Clock output | Configurable as GPIO or clock source for external peripherals; driven by internal oscillator |
| GP3/AN3/PWM2 | General-purpose I/O / Analog input 3 / PWM output 2 | TTL I/O only - AN3 and PWM2 functions disabled on MCP25025-I/SL per device variant definition |
| OSC1/CLKIN | Oscillator input / External clock input | Accepts crystal (1–20 MHz) or external clock signal to drive internal timing and CAN bit rate generation |
| GP2/AN2/PWM1 | General-purpose I/O / Analog input 2 / PWM output 1 | TTL I/O only - analog and PWM functions excluded from MCP25025-I/SL variant |
| OSC2 | Oscillator output | Drives external crystal; unused when external clock applied to OSC1 |
| GP7/RST/VPP | Reset input / Programming voltage | Active-low reset; VPP function used only during In-Circuit Serial Programming™ of configuration memory |
| VSS | Ground | System ground reference for analog and digital sections; must be low-impedance connection |
Key Features
| Feature | Design Value |
|---|---|
| Non-volatile configuration memory | Stores default settings (filters, masks, I/O directions) and auto-loads at power-up - eliminates boot-time initialization code |
| Transmit-on-pin-change | Each of 8 GPIOs can independently trigger transmission of preconfigured CAN message on state change - enables event-driven communication without polling |
| 1-wire CAN bus option | Reduces physical layer wiring to single conductor plus ground - lowers cost and complexity in space-constrained or legacy harness environments |
| Three auto-transmit buffers | Supports concurrent transmission of On Bus, Command Acknowledge/Overflow, and Edge/Threshold-triggered messages - ensures priority-based message scheduling |
| Hardware error management | Integrated TEC/REC counters and automatic Bus-Off recovery (128×11 recessive bits) - maintains network resilience without host intervention |
| Programmable bit timing | Configurable TQ, SJW, PropSeg, PS1, PS2 via CNF1–CNF3 registers - enables robust operation across temperature, voltage, and cable-length variations |
Applications
| Industrial Sensor Node | Automotive Body Control Module |
|---|---|
Use Scenario: Remote temperature, pressure, and switch status monitoring in factory automation systems using daisy-chained CAN wiring. IC Role / Device Role / Timing Role: Standalone CAN node handling sensor data acquisition, edge-triggered reporting, and periodic status broadcasts - no MCU required. Use Value: Reduces BOM count and firmware development effort while delivering deterministic latency (<100 µs) for critical alarm events via hardware-triggered transmission. | Use Scenario: Door lock actuation feedback, window position sensing, and mirror control in vehicle body electronics subsystems. IC Role / Device Role / Timing Role: I/O expander translating mechanical inputs into standardized CAN frames; supports wake-on-CAN for low-power sleep mode. Use Value: Enables <30 µA standby current with reliable wake-up on bus activity - extends battery life in always-on vehicle modules. |
| Distributed Power Monitoring Unit | Building Automation Controller |
Use Scenario: Monitoring circuit breaker status, voltage sags, and current thresholds across multiple AC distribution panels via CAN backbone. IC Role / Device Role / Timing Role: Threshold-detection CAN node transmitting alerts when analog inputs exceed preset limits - uses internal comparators and filter logic. Use Value: Eliminates need for external ADC and interrupt controller; achieves sub-10 ms response from overvoltage event to CAN alert frame. | Use Scenario: HVAC zone sensors, lighting occupancy inputs, and damper position feedback in commercial smart-building networks. IC Role / Device Role / Timing Role: Low-cost, self-contained CAN endpoint managing up to 8 digital inputs and generating scheduled or event-driven status reports. Use Value: Supports 1 Mb/s bus rate and dual acceptance filters - allows coexistence of multiple vendor-specific message formats on shared infrastructure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CAN I/O expander applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP2515-I/SO | Standalone CAN controller (no integrated I/O or non-volatile config); requires external MCU and external memory for message buffering | Used where full software-defined CAN stack flexibility is needed; lacks auto-transmit, edge detection, and power-up defaults | Select when system already includes capable MCU and requires maximum protocol customization - not a drop-in replacement |
| MCP25625-H/SO | Integrated CAN transceiver + controller + 128-byte RAM + SPI interface; no built-in I/O or non-volatile config memory | Suited for MCU-connected nodes needing compact, high-integration CAN interface - no autonomous I/O expansion capability | Choose for new designs requiring modern, supported CAN controller with SPI host interface - superior lifecycle status vs. MCP25025-I/SL |
Compared with MCP2515-I/SO and MCP25625-H/SO, the MCP25025-I/SL uniquely delivers autonomous CAN node functionality with zero-host dependency, hardware-triggered messaging, and factory-programmed behavior - making it optimal for ultra-simple, cost-sensitive endpoints where MCU integration is impractical.
Availability
MCP25025-I/SL is available at Aetrix Electronics and suitable for industrial sensor networks, automotive body electronics, distributed power monitoring, and building automation systems requiring stable component supply across extended temperature ranges (-40°C to +85°C).
Supply support for MCP25025-I/SL includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology Inc. is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and connectivity solutions for embedded control applications.
The MCP2502X/5X product line was designed as autonomous CAN I/O expanders to simplify distributed node implementation in cost-sensitive industrial and automotive systems - eliminating MCU dependency while retaining full CAN v2.0B compliance.
FAQ
What is the primary function of the MCP25025-I/SL in a CAN system?
The MCP25025-I/SL functions as a standalone CAN v2.0B I/O expander that operates without an external microcontroller. It handles CAN protocol processing, message filtering, auto-transmission based on digital edge or bus events, and manages eight configurable GPIOs. Its non-volatile memory stores default configuration, enabling immediate operation after power-up - making MCP25025-I/SL ideal for simple, deterministic endpoint nodes.
Does the MCP25025-I/SL support both standard and extended CAN identifiers?
Yes, the MCP25025-I/SL supports both standard (11-bit) and extended (29-bit) CAN identifiers. Its acceptance mask and dual filters (RXF0 and RXF1) are fully configurable for either format, and the EXIDE bit in mask and filter registers enables selective matching against the IDE bit - allowing flexible message routing in mixed-identifier networks using MCP25025-I/SL.
Can the MCP25025-I/SL operate in 1-wire CAN mode, and how is it enabled?
Yes, the MCP25025-I/SL supports optional 1-wire CAN operation, as indicated by its "X5" suffix and documented in DS20001664E. In this mode, the TSCAN/TXRXCAN pin becomes bidirectional, and RXCAN is internally disconnected. No external configuration register setting is required - the mode is hardwired per device variant, and MCP25025-I/SL is manufactured specifically for 1-wire compatibility.
What are the power consumption characteristics of the MCP25025-I/SL?
The MCP25025-I/SL draws 10 mA typical in active operation and only 30 µA in CAN Sleep mode. Its 2.7V–5.5V supply range supports direct connection to common industrial and automotive rails. The low standby current enables battery-powered or energy-harvesting applications where wake-on-bus-traffic must minimize average power - a core design feature of MCP25025-I/SL.
Is the MCP25025-I/SL pin-compatible with other devices in the MCP2502X/5X family?
Yes, all MCP2502X/5X devices, including MCP25025-I/SL, share identical 14-pin SOIC and PDIP packages and pinouts. However, functional differences exist: MCP25025-I/SL includes 1-wire capability but no A/D or PWM peripherals, whereas MCP25055-I/SL adds four 10-bit analog inputs and two PWM outputs. Hardware layout remains interchangeable - only firmware and configuration differ between variants.
MCP25025-I/SL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Verified
- Number of I/O:
- 8
- Interface:
- CAN (1-Wire)
- Interrupt Output:
- No
- Features:
- EEPROM, POR, PWM
- Output Type:
- Push-Pull
- Current - Output Source/Sink:
- 25mA
- Clock Frequency:
- 4 MHz
- Voltage - Supply:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
MCP25025-I/SL FAQ
1.How can I place an order for MCP25025-I/SL through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP25025-I/SL on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MCP25025-I/SL reliable?
The price and inventory of MCP25025-I/SL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP25025-I/SL is usually 5 days.
3.What payment methods are accepted for MCP25025-I/SL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP25025-I/SL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP25025-I/SL?
MCP25025-I/SL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP25025-I/SL order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MCP25025-I/SL?
For technical support, including MCP25025-I/SL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP25025-I/SL requirements.
6.How does Aetrix verify that MCP25025-I/SL is sourced from the original manufacturer or authorized distributors?
All MCP25025-I/SL products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MCP25025-I/SL meets industry standards.
7.What is the process for return or replacement of MCP25025-I/SL?
All MCP25025-I/SL units undergo pre-shipment inspection (PSI). If there is an issue with MCP25025-I/SL, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MCP25025-I/SL part is unused and in its original packaging.
Return procedure for MCP25025-I/SL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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