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Microchip Technology MCP25025T-I/SL
- Part No.:
- MCP25025T-I/SL
- Manufacturer:
- Microchip Technology
- Category:
- I/O Expanders
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MCP25025T-I/SL.pdf
- Description:
- IC XPNDR 4MHZ CAN 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,544
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Product details
Overview
MCP25025T-I/SL from Microchip Technology is a CAN v2.0B-compliant I/O expander IC that implements autonomous CAN node functionality without requiring an external microcontroller. It supports programmable bit rates up to 1 Mb/s, features three auto-transmit buffers, two message reception buffers, one programmable mask, and two programmable filters - enabling direct integration into industrial control and automotive body electronics systems.
For engineers reviewing the MCP25025T-I/SL datasheet, MCP25025T-I/SL pinout, MCP25025T-I/SL application, or MCP25025T-I/SL equivalent, this device delivers deterministic CAN messaging with edge- and threshold-triggered transmission, non-volatile configuration storage, and 8 configurable GPIOs - critical for distributed sensor/actuator nodes in harsh EMI environments.
Technical Context
The MCP25025T-I/SL integrates a full CAN protocol engine with double-buffered RX architecture, hardware-based acceptance filtering (one mask + two filters), and automatic retransmission logic compliant with ISO 11898-1. Its finite state machine handles bit-level arbitration, CRC generation/checking, and error confinement via independent TEC/REC counters.
It supports 1-wire CAN bus operation (TXCAN/TXRXCAN pin dual-role), self-configuration from non-volatile memory at power-up, and in-circuit serial programming (ICSP™) of default configuration. The device enters low-power CAN Sleep mode with 30 µA standby current and wakes on bus traffic or digital input change-of-state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CAN Compliance | CAN v2.0B active - supports both standard (11-bit) and extended (29-bit) identifiers with full protocol handling |
| Max Bit Rate | 1 Mb/s - programmable via CNF1–CNF3 registers; enables high-speed diagnostics and real-time control loops |
| GPIO Count | 8 bidirectional I/O lines - individually configurable as inputs or outputs; supports transmit-on-pin-change |
| Non-Volatile Memory | On-chip EPROM - stores user configuration and loads automatically at power-up; eliminates external configuration EEPROM |
| Supply Voltage | 2.7V to 5.5V - single-rail operation compatible with 3.3V and 5V industrial logic domains |
| Active Current | 10 mA typical - enables continuous CAN monitoring and I/O polling in battery-sensitive applications |
| Standby Current | 30 µA in CAN Sleep mode - supports ultra-low-power wake-on-bus or wake-on-GPIO functionality |
| Operating Temp | -40°C to +85°C (Industrial grade) - qualified for under-hood and factory-floor deployment |
Pinout & Package
Package: 14-pin SOIC (150 mil), RoHS-compliant, surface-mount. Pin-compatible with PDIP variant but optimized for automated assembly and thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GP0/AN0 | Digital I/O / Analog Input | Bidirectional TTL-level GPIO; analog input channel 0 when A/D enabled (not applicable to MCP25025) |
| GP1/AN1 | Digital I/O / Analog Input | Bidirectional TTL-level GPIO; analog input channel 1 (A/D not present in MCP25025) |
| GP2/AN2/PWM1 | Digital I/O / PWM Output | Configurable as GPIO or 10-bit PWM output; no analog input function in MCP25025 |
| GP3/AN3/PWM2 | Digital I/O / PWM Output | Configurable as GPIO or second 10-bit PWM output; no analog input function in MCP25025 |
| GP4/VREF- | Digital I/O / Reference Input | GPIO or external negative reference for A/D (unused in MCP25025; tied internally) |
| GP5/VREF+ | Digital I/O / Reference Input | GPIO or external positive reference for A/D (unused in MCP25025; tied internally) |
| VSS | Ground | Primary digital ground reference for all internal circuitry and I/O drivers |
| OSC1/CLKIN | Oscillator Input | Connects to crystal (1–20 MHz) or external clock source for CAN timing and internal logic |
| OSC2 | Oscillator Output | Crystal oscillator feedback output; requires external load capacitor for crystal operation |
| GP6/CLKOUT | Digital I/O / Clock Output | Configurable as GPIO or buffered system clock output (e.g., for synchronizing peripherals) |
| GP7/RST/VPP | Reset Input / Programming Voltage | Active-low reset; VPP used only during ICSP™ programming (5V required) |
| RXCAN | CAN Receive Input | Differential CAN bus receive signal input; high-impedance when 1-wire mode enabled |
| TXCAN/TXRXCAN | CAN Transmit Output / 1-Wire Mode | Standard CAN TX output; functions as combined TX/RX in optional 1-wire CAN mode (MCP25025-specific feature) |
| VDD | Power Supply | 2.7–5.5V main supply; powers CAN transceiver interface, logic core, and I/O drivers |
Key Features
| Feature | Design Value |
|---|---|
| Programmable CAN bit timing | Full control over SyncSeg, PropSeg, PS1, PS2, and SJW via CNF1–CNF3 registers - enables precise bus timing calibration across temperature and cable lengths |
| Auto-transmit on event | Hardware-triggered transmission on digital input edge or analog threshold crossing - eliminates host polling and reduces latency to <100 µs |
| Non-volatile configuration | User-defined masks, filters, TX IDs, and I/O states stored in EPROM - ensures consistent behavior across power cycles without host initialization |
| 1-wire CAN bus option | Single-wire physical layer support via TXCAN/TXRXCAN pin - reduces wiring cost and connector count in space-constrained nodes |
| Error-condition messaging | Automatic transmission of TEC/REC/EFLG status on error-warning (>95) or error-passive (>127) events - enables remote diagnostics without host intervention |
| Self-configuration at startup | Automatic transfer of EPROM contents to SRAM upon power-up - guarantees functional readiness within 10 ms of VDD stabilization |
Applications
| Industrial Sensor Node | Automotive Body Control |
|---|---|
Use Scenario: Remote temperature/humidity sensor with local digital inputs monitoring door/window status in HVAC ducts or factory enclosures. IC Role / Device Role / Timing Role: Standalone CAN node collecting GPIO states and transmitting periodic On Bus messages; triggers immediate TX on door-open edge detection. Use Value: Eliminates need for separate MCU and CAN controller; reduces BOM cost by 30% and PCB area by 45% versus discrete solution. |
Use Scenario: Seatbelt reminder module interfacing with buckle switch, ignition status, and chime driver in entry-level vehicles. IC Role / Device Role / Timing Role: CAN I/O expander receiving ignition-on command and transmitting seatbelt status; schedules On Bus message every 500 ms. Use Value: Meets ISO 11898-1 timing requirements for Class A diagnostics; supports 1-wire CAN to simplify harness routing behind dashboard. |
| Building Automation Controller | Off-Highway Equipment Monitor |
Use Scenario: Lighting control panel with occupancy sensors and relay outputs managing zone lighting in commercial buildings. IC Role / Device Role / Timing Role: Local I/O aggregator translating motion-detection edges into CAN messages; uses TXID2 for immediate alert transmission. Use Value: Achieves sub-200 µs response from sensor activation to CAN frame transmission - meets EN 50131-1 reaction time mandates. |
Use Scenario: Hydraulic pressure monitor on agricultural tractor implementing fault reporting and service interval tracking. IC Role / Device Role / Timing Role: Autonomous node reading pressure switch inputs and transmitting error-condition messages on REC >127. Use Value: Enables predictive maintenance via standardized CAN error frames; operates reliably at -40°C ambient per SAE J1455. |
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 EEPROM | Used where host processor manages all configuration and scheduling; lacks auto-transmit on event capability | Select when design already includes a capable MCU and requires maximum flexibility in message handling logic |
| MCP25625-E/ML | Integrated CAN controller + SPI interface + 3.3V LDO; adds 128-byte RAM buffer and enhanced error recovery | Suited for designs needing host-driven dynamic filter updates and multi-message burst transmission | Choose for new designs requiring higher data throughput and future-proofing; not pin-compatible with MCP25025T-I/SL |
Compared with MCP2515-I/SO, the MCP25025T-I/SL reduces system complexity by embedding configuration memory and autonomous messaging; compared with MCP25625-E/ML, it offers lower cost and simpler integration for fixed-function nodes but lacks SPI configurability and advanced diagnostics.
Availability
MCP25025T-I/SL is available at Aetrix Electronics and suitable for industrial sensor nodes, automotive body electronics, building automation controllers, and off-highway equipment monitors requiring stable component supply and long-term lifecycle support.
Supply support for MCP25025T-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 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 specifically as autonomous CAN I/O expanders to simplify distributed node implementation in cost-sensitive, low-complexity networks - targeting applications where adding a full MCU is unnecessary.
FAQ
What is the primary function of the MCP25025T-I/SL in a CAN network?
The MCP25025T-I/SL functions as a standalone CAN I/O expander that implements full CAN v2.0B protocol handling without requiring an external microcontroller. It autonomously manages message transmission and reception, processes input changes, and executes preconfigured responses - making the MCP25025T-I/SL ideal for simple sensor/actuator nodes where MCU overhead is unjustified.
Does the MCP25025T-I/SL support both standard and extended CAN identifiers?
Yes, the MCP25025T-I/SL supports both standard (11-bit) and extended (29-bit) CAN identifiers through its programmable acceptance mask and dual filters. The mask register allows selective comparison of identifier bits, and the device correctly interprets EXIDE bits in received frames - ensuring robust interoperability in mixed-ID networks using the MCP25025T-I/SL.
How does the MCP25025T-I/SL handle power management in low-duty-cycle applications?
The MCP25025T-I/SL supports CAN Sleep mode with only 30 µA standby current and can wake on bus traffic or digital input change-of-state. Its non-volatile configuration ensures immediate readiness after wake-up, and the self-configuration sequence completes within 10 ms - enabling the MCP25025T-I/SL to maintain responsiveness while minimizing average power in battery-powered remote nodes.
Can the MCP25025T-I/SL be reprogrammed in-system after soldering?
Yes, the MCP25025T-I/SL supports In-Circuit Serial Programming™ (ICSP™) of its non-volatile configuration memory using the GP7/VPP pin and standard Microchip programming tools. This allows field updates to masks, filters, TX IDs, and I/O configurations without removing the MCP25025T-I/SL from the board - supporting post-deployment calibration and firmware patching.
What distinguishes the MCP25025T-I/SL from the MCP25055 variant?
The MCP25025T-I/SL lacks the four-channel 10-bit A/D converter present in the MCP25055, and does not include analog input pins (AN0–AN3) or VREF± terminals. Both share identical CAN engine, GPIO count, PWM capability, and 1-wire CAN support - but the MCP25025T-I/SL targets purely digital I/O expansion, whereas the MCP25055 adds analog sensing capability.
MCP25025T-I/SL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
MCP25025T-I/SL FAQ
1.How can I place an order for MCP25025T-I/SL through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP25025T-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 MCP25025T-I/SL reliable?
The price and inventory of MCP25025T-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 MCP25025T-I/SL is usually 5 days.
3.What payment methods are accepted for MCP25025T-I/SL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP25025T-I/SL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP25025T-I/SL?
MCP25025T-I/SL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP25025T-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 MCP25025T-I/SL?
For technical support, including MCP25025T-I/SL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP25025T-I/SL requirements.
6.How does Aetrix verify that MCP25025T-I/SL is sourced from the original manufacturer or authorized distributors?
All MCP25025T-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 MCP25025T-I/SL meets industry standards.
7.What is the process for return or replacement of MCP25025T-I/SL?
All MCP25025T-I/SL units undergo pre-shipment inspection (PSI). If there is an issue with MCP25025T-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 MCP25025T-I/SL part is unused and in its original packaging.
Return procedure for MCP25025T-I/SL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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