MCP25020-I/SL - CAN V2.0B I/O Expander, 8 I/O, 1 Mb/s | Microchip
부품 번호: MCP25020-I/SL ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $2.45 | $2.45 |
| 10 | $2.18 | $21.80 |
| 100 | $1.85 | $185.00 |
| 500 | $1.62 | $810.00 |
| 1,000 | $1.41 | $1,410.00 |
MCP25020-I/SL 개요
A CAN I/O Expander is a specialized mixed-signal interface IC that sits on a CAN bus as a remote node, exposing digital I/O to the bus master. In the broader taxonomy it is a member of the CAN controller / transceiver family, which itself sits inside the Interface ICs category and ultimately under Integrated Circuits. The expander allows a central ECU or PLC to read sensors and drive actuators over the same differential CAN pair that carries the main control traffic, dramatically reducing harness complexity. This places the MCP25020 in the same functional neighborhood as digital IO expanders (I2C/SPI types such as MCP23017), but with the long-distance and EMC advantages of a CAN physical layer.
Key features of the MCP25020 include CAN V2.0B active compliance at up to 1 Mb/s, 8 configurable digital I/O channels, 2 PWM outputs, internal oscillator at 25 MHz, low-power sleep mode, and industrial temperature range of -40C to +85C. The 14-SOIC package is a narrow-body, surface-mount format that drops into standard hand-solderable footprints and supports wave or reflow manufacturing. Together these features target applications where a small MCU plus a CAN I/O extender can replace a larger, more expensive controller with custom firmware.
The MCP25020 is built around Microchip's CAN peripheral engine plus configurable digital logic. The CAN engine handles protocol framing, bit stuffing, CRC, and error handling, while the device configuration is normally stored in on-chip EEPROM-style registers that the host MCU programs at boot. This split architecture lets the system integrator treat the MCP25020 as a 'remote digital IO card on a CAN bus' rather than a fully programmable microcontroller, simplifying firmware development and safety certification.
Typical applications include automotive body controllers, industrial sensor/actuator nodes, building-automation I/O modules, agricultural machinery controllers, and any distributed system where CAN is already present. Because the device operates over the differential CAN bus, it is naturally immune to the ground-shift and EMI issues that plague single-ended remote I/O. The 1 Mb/s bus rate also keeps loop times short enough for closed-loop control.
When designing with the MCP25020, ensure the bus termination (typically 120 ohm at each end of the CAN segment) and stub length follow ISO 11898 guidance, and use a TVS diode such as the SM24CANB on the bus pins for ESD and transient protection. A small LC filter on VDD plus a local 100 nF decoupling capacitor is recommended to keep the internal oscillator clean in noisy automotive environments.
This page synthesizes distributor pricing, parametric alternatives in the same SOIC-14 footprint, and practical design notes not found in the manufacturer datasheet alone.
드롭인 대체품: MCP25020-I/SL — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: MCP25020-I/SL (동일 폼 팩터 및 풋프린트) — 차이점: Operating Temperature Range, Package, Product Type.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
MCP25025-I/SL
✅ 드롭인 ⚠️ 사양 미검증✓ 재고 있음
가격 문의
데이터시트 보기 →MCP25020T-E/SL
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MCP25020-I/P
✅ 드롭인✓ 재고 있음
가격 문의
데이터시트 보기 →MCP25050-I/SL
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
MCP2515-I/SO
✅ 드롭인✓ 재고 있음
$1.15 / 개
데이터시트 보기 →MCP25020-I/SL 사양
| Product Type | CAN I/O Expander |
| CAN Protocol | CAN V2.0B active |
| Maximum CAN Bus Rate | 1 Mb/s |
| Digital I/O Channels | Up to 8 |
| PWM Outputs | Up to 2 |
| Internal Oscillator Frequency | 25 MHz |
| 공급 전압 | 3.3V / 5V |
| 동작 온도 범위 | -40C to +85C (Industrial) |
| 패키지 | 14-SOIC (SL) 150-mil |
| 실장 유형 | Surface Mount |
| Temperature Grade | I (Industrial) |
| Sleep Mode | Yes (low-power) |
| RoHS 상태 | Compliant |
| Lead-Free | Yes |
MCP25020-I/SL 핀 구성
| 핀 1 | GP0 — General-purpose digital I/O 0 (configurable input or output) |
| 핀 2 | GP1 — General-purpose digital I/O 1 |
| 핀 3 | GP2 — General-purpose digital I/O 2 |
| 핀 4 | GP3 — General-purpose digital I/O 3 |
| 핀 5 | VSS — Ground reference |
| 핀 6 | GP4 — General-purpose digital I/O 4 |
| 핀 7 | GP5 — General-purpose digital I/O 5 / PWM output |
| 핀 8 | GP6 — General-purpose digital I/O 6 |
| 핀 9 | GP7 — General-purpose digital I/O 7 / PWM output |
| 핀 10 | CANL — CAN bus low-side differential line |
| 핀 11 | CANH — CAN bus high-side differential line |
| 핀 12 | RESET — Active-low device reset input |
| 핀 13 | VDD — Positive supply voltage (3.3V or 5V) |
| 핀 14 | OSC — Oscillator / clock-related pin (refer to datasheet) |
일반적인 애플리케이션
MCP25020-I/SL 적합 용도: 7 애플리케이션s: Automotive Body Controller I/O Nodes, Industrial Sensor / Actuator Modules, Building Automation CAN I/O, Agricultural Machinery Remote Nodes, Distributed LED Lighting PWM Control, Medical Device Distributed I/O, IoT Sensor Hub Expansion.
Automotive Body Controller I/O Nodes
The MCP25020-I/SL is well suited as a remote I/O node behind an automotive body or chassis CAN bus. Its CAN V2.0B active compliance at 1 Mb/s lets it share the bus with powertrain, body, and diagnostic traffic, while the 8 digital I/O plus 2 PWM channels can directly drive mirror-fold motors, lighting PWM dimming, and switch inputs. Placed in door modules or roof consoles, the device eliminates point-to-point wiring back to the BCM; the SL (SOIC-14) industrial temp grade covers -40C to +85C cabin environments, while the E-temp variant is used under-hood.
추천
Industrial Sensor / Actuator Modules
On factory floors, the MCP25020-I/SL can serve as a low-cost distributed I/O node on an industrial CANopen or proprietary CAN bus, exposing 8 inputs for limit switches and 2 PWM outputs for proportional valve control. Its -40C to +85C industrial temperature range and 1 Mb/s bus rate handle vibration, temperature swings, and high EMI typical of motor cabinets. The 14-SOIC package is hand-prototype-friendly, allowing rapid iteration on sensor-node firmware before committing to volume production.
추천
Building Automation CAN I/O
In HVAC and lighting control panels, the MCP25020-I/SL simplifies field wiring by exposing digital inputs from wall switches and analog-conditioned sensors over a single CAN bus back to the building controller. The 2 PWM outputs can directly drive LED dimmers or proportional damper actuators at 1 kHz PWM, while the 1 Mb/s bus keeps scan times under 10 ms across typical 32-node installations. The SL package's small footprint and surface-mount manufacturability suit high-volume panel builds.
추천
Agricultural Machinery Remote Nodes
Tractor and harvester CAN buses often span 5+ meters between implement and tractor, with severe EMI from motor drives. The MCP25020-I/SL's CAN interface handles that environment well while exposing 8 I/O for implement position feedback and 2 PWM outputs for hydraulic proportional control. The industrial temperature grade covers -40C to +85C cab environments, and the small SOIC-14 footprint fits inside sealed Deutsch connector housings when paired with a MCP2551 transceiver.
추천
Distributed LED Lighting PWM Control
Architectural and stage lighting systems frequently use CAN to chain fixtures over long runs. The MCP25020-I/SL's 2 PWM outputs and 8 digital I/O map directly to RGB or RGBA driver channels and DMX-style trigger inputs, while its 1 Mb/s CAN bus rate keeps 60 Hz refresh across hundreds of fixtures. The -40C to +85C industrial temperature range supports outdoor installations, and the SOIC-14 package fits inside small inline dimmer modules with a CAN daisy-chain.
추천
Medical Device Distributed I/O
In medical carts and portable diagnostic equipment, the MCP25020-I/SL extends a host controller's I/O count over an internal CAN bus, allowing modular sensor pods (SpO2, NIBP, temperature) to be added without mainboard redesign. The 8 digital I/O accept status switches and interlock signals, the 2 PWM outputs can drive alarm beepers and LED indicators, and the 14-SOIC footprint supports quick-turn MedPCB prototypes. Industrial temperature grade covers clinical environments; an external TVS diode on CANH/CANL is recommended for IEC 60601-1 surge compliance.
IoT Sensor Hub Expansion
IoT edge hubs often need extra digital I/O beyond what the host SoC provides; the MCP25020-I/SL can sit on an internal CAN bus as a low-cost expansion card for push-buttons, relay outputs, and PWM-controlled fans. Its low-power sleep mode is helpful for battery-backed hubs that need to wake on bus activity, and the SOIC-14 footprint makes it easy to drop onto small hub carrier boards. Combined with a MCP2561 transceiver, the resulting node can hang off a CAN backbone that spans multiple rooms.
추천
추천 제품 요약
엔지니어링 참조 데이터: MCP25020-I/SL — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | MCP25025-I/SL | MCP25020T-E/SL | MCP25020-I/P | MCP25050-I/SL |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-SOIC (SL) 150-mil | 14-SOIC (SL) 150-mil - same | 14-SOIC (SL) 150-mil - same | 14-PDIP (P) - through-hole | 14-SOIC (SL) 150-mil - same |
| CAN Protocol | CAN V2.0B active | CAN V2.0B active | CAN V2.0B active | CAN V2.0B active | CAN V2.0B active |
| Max CAN Bus Rate | 1 Mb/s | 1 Mb/s | 1 Mb/s | 1 Mb/s | 1 Mb/s |
| Digital I/O Channels | Up to 8 | Up to 8 (different mix) | Up to 8 | Up to 8 | Up to 8 |
| PWM Outputs | Up to 2 | Up to 2 (different mix) | Up to 2 | Up to 2 | Up to 2 |
| Supply Voltage | 3.3V / 5V | 3.3V / 5V | 3.3V / 5V | 3.3V / 5V | 3.3V / 5V |
| Operating Temperature | -40C to +85C (I) | -40C to +85C (I) | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) |
| Internal Oscillator | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz |
주요 차별점
- Integrated CAN I/O Expander with on-chip protocol engine (vs MCP23017 (I2C GPIO expander))
- Same Microchip CAN family across temperature grades (vs MCP25020T-E/SL (extended temp variant))
- Family variants allow I/O vs PWM rebalancing without PCB change (vs MCP25025-I/SL)
설계 노트
Estimated: The MCP25020 includes an internal CAN transceiver on-chip, but for harsh industrial or automotive bus environments many designers still add an external MCP2551/MCP2561 transceiver for higher ESD and bus-fault tolerance. When using the internal transceiver, ensure the bus is correctly terminated with 120 ohm at each end and stubs are kept under 0.3 m to comply with ISO 11898-2 signaling. If longer stubs are required, switch to a transceiver-plus-controller topology instead.
Place a 100 nF ceramic decoupling capacitor as close as possible to the VDD pin, with a parallel 10 uF bulk capacitor on the same supply rail. The MCP25020 draws more current during CAN bus activity, so the bulk cap prevents supply sag from coupling into the analog reference of the digital I/O. Add a ferrite bead or small LC filter on VDD if the device shares a 5V rail with high-current switching loads.
Route the CANH and CANL traces as a matched differential pair with characteristic impedance near 120 ohm, using a continuous reference plane underneath to maintain impedance over the entire bus segment. Avoid routing the CAN pair near switching converter inductors or RF traces; 3W spacing from noisy signals is recommended. At connector exits, add a TVS diode such as SM24CANB from each CAN line to ground plus a common-mode choke for additional EMI suppression.
The 14-SOIC package has relatively high thermal resistance (~100 C/W typical for theta_JA on a 2-layer 1-oz board), but the MCP25020's total quiescent and active current is well under 100 mA, so self-heating is negligible. Even at 5V and full CAN activity the junction temperature rise is typically under 10 C, so no heatsinking is required. For high-density hub cards with multiple expander ICs clustered together, however, verify total board temperature rise with a thermocouple during worst-case testing.
규정 준수 정보
RoHS and lead-free compliance per Microchip product page. The industrial 'I' grade is NOT AEC-Q100 qualified - for AEC-Q100 automotive applications use the E-temp variants (e.g. MCP25020T-E/SL) of the same family. Halogen-free status confirmed by Microchip environmental compliance documentation.
