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Microchip Technology MCP25020T-I/SL
- Part No.:
- MCP25020T-I/SL
- Manufacturer:
- Microchip Technology
- Category:
- I/O Expanders
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MCP25020T-I/SL.pdf
- Description:
- IC XPNDR 25MHZ CAN V2.0B 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,129
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Product details
Overview
MCP25020T-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 up to 1 Mb/s bus rate, features three auto-transmit buffers, two message reception buffers, one programmable mask, and two programmable filters - enabling direct integration into industrial control panels and automotive body electronics for distributed sensor/actuator interfacing.
For engineers reviewing the MCP25020T-I/SL datasheet, MCP25020T-I/SL pinout, MCP25020T-I/SL application, or MCP25020T-I/SL equivalent, key selection considerations include its non-volatile configuration memory, eight GPIOs configurable as inputs or outputs with pin-change transmit enable, 2.7V–5.5V supply range, 10 mA active current, and SOIC-14 package compatibility with legacy CAN bus infrastructure.
Technical Context
The MCP25020T-I/SL integrates a full CAN protocol engine with double-buffered RX architecture, automatic message scheduling, and hardware-based edge/threshold detection logic. Its CAN module includes dedicated TX/RX shift registers, CRC generator, error management logic (TEC/REC counters), and bit timing logic with programmable TQ segments (SyncSeg, PropSeg, PS1, PS2) and SJW for resynchronization.
It operates in Normal, Listen-Only, or Sleep modes, with automatic wake-up on bus traffic and self-configuration from EPROM to SRAM at power-up. Unlike MCP2505X variants, it lacks analog-to-digital converters and 1-wire CAN capability - confirming its role as a digital-only CAN I/O expander optimized for deterministic GPIO event reporting over CAN.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CAN Compliance | CAN v2.0B active - supports standard and extended identifiers with full protocol handling including arbitration, error signaling, and automatic retransmission. |
| Max Bit Rate | 1 Mb/s - enables real-time communication in high-speed automotive and industrial networks without external clock scaling. |
| Supply Voltage | 2.7V to 5.5V - allows direct interface with 3.3V or 5V logic systems and simplifies power design across mixed-voltage boards. |
| Active Current | 10 mA typical - ensures low power consumption during continuous CAN bus monitoring and message transmission. |
| Standby Current | 30 µA in CAN Sleep mode - supports battery-powered nodes requiring ultra-low quiescent current during idle periods. |
| GPIO Count | 8 general-purpose I/O lines - each individually configurable as input or output, with optional transmit-on-pin-change activation for event-driven messaging. |
| Package | 14-pin SOIC (150 mil) - industry-standard surface-mount footprint compatible with automated assembly and legacy PCB layouts. |
| Temperature Range | Industrial (-40°C to +85°C) - validated for operation in harsh environments such as engine compartments and factory floors. |
Pinout & Package
Package: 14-pin SOIC (150 mil), RoHS-compliant, moisture-sensitive level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GP0/AN0 | Digital I/O / Analog Input (not used) | Configurable bidirectional TTL-level GPIO; AN0 function disabled per MCP25020 device definition. |
| GP1/AN1 | Digital I/O / Analog Input (not used) | Configurable bidirectional TTL-level GPIO; AN1 function disabled per MCP25020 device definition. |
| GP2/AN2/PWM1 | Digital I/O / PWM Output (not used) | Configurable bidirectional TTL-level GPIO; PWM1 and AN2 functions disabled per MCP25020 device definition. |
| GP3/AN3/PWM2 | Digital I/O / PWM Output (not used) | Configurable bidirectional TTL-level GPIO; PWM2 and AN3 functions disabled per MCP25020 device definition. |
| GP4/VREF- | Digital I/O / Reference Ground | Configurable bidirectional GPIO; VREF- not functional - internal reference unused in MCP25020 variant. |
| GP5/VREF+ | Digital I/O / Reference Voltage | Configurable bidirectional GPIO; VREF+ not functional - internal reference unused in MCP25020 variant. |
| VSS | Ground | Primary digital ground reference for all internal circuitry and I/O structures. |
| OSC1/CLKIN | Oscillator Input | Accepts external crystal (1–20 MHz) or clock source to drive internal timing for CAN bit sampling and peripheral operation. |
| OSC2 | Oscillator Output | Crystal oscillator feedback output; required when using crystal; open when using external clock. |
| GP6/CLKOUT | Digital I/O / Clock Output | Configurable bidirectional GPIO; CLKOUT provides divided system clock for synchronization of external peripherals. |
| GP7/RST/VPP | Reset Input / Programming Voltage | Active-low reset input; VPP function reserved for In-Circuit Serial Programming™ but not used in standard operation. |
| RXCAN | CAN Receive Input | Differential CAN bus receive signal input - connects to CAN transceiver RX line; not connected in 1-wire mode (not supported). |
| TXCAN/TXRXCAN | CAN Transmit Output | Differential CAN bus transmit signal output - connects to CAN transceiver TX line; TXRXCAN mode unavailable in MCP25020. |
| VDD | Power Supply | Primary power input (2.7V–5.5V); powers all internal logic, CAN module, and GPIO drivers. |
Key Features
| Feature | Design Value |
|---|---|
| Non-volatile configuration memory | User-defined settings (filters, masks, TX IDs, GPIO directions) persist across power cycles and auto-load at startup - eliminating boot-time initialization firmware. |
| Auto-transmit on digital edge | Any of eight GPIOs can trigger immediate CAN message transmission upon rising/falling edge - enabling responsive fault/event reporting without host intervention. |
| Programmable acceptance filtering | One global mask + two independent filters (RXF0/RXF1) allow selective response to Information Request and Input messages - reducing bus load and CPU polling overhead. |
| Three prioritized transmit buffers | Dedicated TXID0 (On Bus), TXID1 (Command Ack/Error), TXID2 (Edge/Threshold) ensure deterministic message scheduling and guaranteed delivery of critical status updates. |
| CAN Sleep mode with wake-up | 30 µA standby current with automatic wake-up on bus activity - extends battery life in remote sensors while maintaining network responsiveness. |
| In-Circuit Serial Programming™ | Default configuration memory can be updated in-system via CAN bus or ICSP™ interface - enabling field reconfiguration without device removal. |
Applications
| Industrial Control Panel | Automotive Body Controller |
|---|---|
Use Scenario: Distributed I/O expansion in PLC racks or HMI-connected machinery cabinets where space and MCU resources are constrained. IC Role / Device Role / Timing Role: Standalone CAN node providing GPIO state monitoring and event-triggered messaging - replaces microcontroller-based I/O modules. Use Value: Reduces BOM count and firmware development effort by embedding CAN protocol handling and message scheduling directly in hardware. |
Use Scenario: Door module or lighting control unit requiring reliable, low-latency reporting of switch closures, lamp status, or diagnostic faults over vehicle CAN bus. IC Role / Device Role / Timing Role: Autonomous CAN endpoint managing eight local inputs/outputs with built-in edge-detection and error-condition messaging. Use Value: Enables fail-safe operation with automatic Error Condition messages (TEC/REC/EFLG) transmitted at >95 and >127 counter thresholds. |
| Remote Sensor Node | Building Automation System |
Use Scenario: Battery-powered environmental sensor (temperature, occupancy) mounted in HVAC ducts or ceiling cavities with intermittent CAN bus connectivity. IC Role / Device Role / Timing Role: Low-power CAN I/O expander entering Sleep mode between events and waking only on GPIO change or bus traffic. Use Value: Achieves multi-year battery life via 30 µA standby current and eliminates need for wake-up controller or external interrupt logic. |
Use Scenario: Lighting or blind actuator node in commercial buildings using CANopen or custom CAN-based control protocols. IC Role / Device Role / Timing Role: Deterministic I/O interface translating local button presses or position feedback into scheduled On Bus messages and command-acknowledged configuration updates. Use Value: Ensures interoperability through strict CAN v2.0B compliance and eliminates timing jitter associated with software-based CAN stacks. |
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 GPIO, no NV memory, requires external MCU); SPI interface; no auto-transmit or edge detection logic. | Requires host processor for I/O management and message generation - unsuitable for microcontroller-less nodes. | Select when integrating with existing MCU-based designs needing flexible CAN protocol offload, not autonomous I/O expansion. |
| MCP25625-H/SO | Integrated CAN controller + transceiver + 8-bit MCU core; supports CAN FD; includes flash memory and enhanced peripherals. | Higher integration and programmability, but larger footprint, higher cost, and greater design complexity than fixed-function MCP25020T-I/SL. | Select when future firmware updates, CAN FD migration, or custom logic execution are required - not for static, low-cost I/O expansion. |
Compared with MCP2515-I/SO, MCP25020T-I/SL delivers plug-and-play CAN node capability without host dependency; compared with MCP25625-H/SO, it offers lower cost, smaller size, and deterministic latency at the expense of programmability - making it optimal for fixed-role, high-volume embedded I/O endpoints.
Availability
MCP25020T-I/SL is available at Aetrix Electronics and suitable for industrial control panels, automotive body electronics, remote sensor nodes, and building automation systems requiring stable component supply and long-term lifecycle support.
Supply support for MCP25020T-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 leading provider of microcontrollers, analog components, and connectivity solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The MCP2502X family was designed specifically as cost-optimized, microcontroller-free CAN I/O expanders for distributed embedded systems - targeting applications where simplicity, reliability, and minimal bill-of-materials are critical design constraints.
FAQ
What is the primary function of the MCP25020T-I/SL in a CAN network?
The MCP25020T-I/SL functions as a standalone CAN v2.0B I/O expander that operates autonomously without an external microcontroller. It monitors eight GPIOs, responds to CAN messages (Input, Information Request), and transmits predefined messages (On Bus, Command Ack, Error Condition, Edge-triggered) - making MCP25020T-I/SL ideal for simple, deterministic node implementations in industrial and automotive networks.
Does the MCP25020T-I/SL support analog inputs or PWM outputs?
No, the MCP25020T-I/SL does not support analog inputs or PWM outputs. These features are exclusive to the MCP2505X variants (e.g., MCP25050). The MCP25020T-I/SL is a digital-only device with eight configurable GPIOs, CAN protocol engine, and non-volatile configuration memory - confirmed by device differentiation tables and pin function definitions in DS20001664E.
Can the MCP25020T-I/SL operate in 1-wire CAN mode?
No, the MCP25020T-I/SL does not support 1-wire CAN operation. That feature is limited to MCP250X5 devices (e.g., MCP25025, MCP25055), as explicitly stated in the "Package Types" table and pin description notes. The MCP25020T-I/SL uses standard two-wire CAN bus interface with separate RXCAN and TXCAN pins.
How does the MCP25020T-I/SL handle error conditions on the CAN bus?
The MCP25020T-I/SL implements full CAN error management with Transmit Error Counter (TEC) and Receive Error Counter (REC). When TEC or REC exceeds 95, it transmits an Error Condition message containing EFLG, TEC, and REC values. Hysteresis (17-count window) prevents message flooding. At >255 TEC, it enters Bus-Off and recovers automatically after 128×11 recessive bits - all handled autonomously within MCP25020T-I/SL hardware.
Is the MCP25020T-I/SL pin-compatible with other devices in the MCP2502X/5X family?
Yes, the MCP25020T-I/SL shares identical 14-pin SOIC and PDIP footprints and pinout with all MCP2502X/5X devices, including MCP25025, MCP25050, and MCP25055. However, alternate functions (e.g., ANx, PWMx, 1-wire) are disabled or unconnected per device variant - so PCB layout is reusable, but firmware and external circuitry must match the specific variant's capabilities.
MCP25020T-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 V2.0b
- Interrupt Output:
- No
- Features:
- EEPROM, POR, PWM
- Output Type:
- Push-Pull
- Current - Output Source/Sink:
- 25mA
- Clock Frequency:
- 25 MHz
- Voltage - Supply:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
MCP25020T-I/SL FAQ
1.How can I place an order for MCP25020T-I/SL through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP25020T-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 MCP25020T-I/SL reliable?
The price and inventory of MCP25020T-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 MCP25020T-I/SL is usually 5 days.
3.What payment methods are accepted for MCP25020T-I/SL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP25020T-I/SL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP25020T-I/SL?
MCP25020T-I/SL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP25020T-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 MCP25020T-I/SL?
For technical support, including MCP25020T-I/SL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP25020T-I/SL requirements.
6.How does Aetrix verify that MCP25020T-I/SL is sourced from the original manufacturer or authorized distributors?
All MCP25020T-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 MCP25020T-I/SL meets industry standards.
7.What is the process for return or replacement of MCP25020T-I/SL?
All MCP25020T-I/SL units undergo pre-shipment inspection (PSI). If there is an issue with MCP25020T-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 MCP25020T-I/SL part is unused and in its original packaging.
Return procedure for MCP25020T-I/SL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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