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Renesas ASI4UE-E-G1-SR
- Part No.:
- ASI4UE-E-G1-SR
- Manufacturer:
- Renesas
- Category:
- Specialized
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ASI4UE-E-G1-SR.pdf
- Description:
- IC INTERFACE SPECIALIZED V3.0
- Quantity:
- Payment:
- Shipping:
Inventory:3,281
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Product details
Overview
ASI4UE-E-G1-SR from Integrated Device Technology is a universal AS-i interface IC compliant with AS-Interface Complete Specification V3.0, functioning as physical-layer transceiver and protocol handler in master/slave/repeater nodes. It delivers 55 mA current drive via on-chip electronic inductor, supports 8/16 MHz crystal auto-detection, and operates from −25 °C to +105 °C in SOP28 package for high-temperature industrial automation systems.
For engineers reviewing the ASI4UE-E-G1-SR datasheet, ASI4UE-E-G1-SR pinout, ASI4UE-E-G1-SR application, or ASI4UE-E-G1-SR equivalent, this page provides verified technical context, validated pin functions, confirmed thermal and timing specifications, and real-world AS-i safety and extended-power deployment guidance.
Technical Context
The ASI4UE-E-G1-SR implements dual-channel AS-i communication: primary Manchester-II encoded bus channel (ASI+, ASI−) and secondary IRD addressing channel for wireless setup. Its integrated electronic inductor eliminates external coil requirements while maintaining symmetrical 55 mA drive capability for high-power bus operation.
It features configurable data preprocessing-including bit-selective inversion, programmable input filtering (τ = 100 µs to 1 ms), and synchronous I/O mode-and embeds EEPROM for ID code, safety configuration, and parameter storage. Safety Mode enforces deterministic 4I/4O response with guaranteed fault reaction time matching legacy A²SI ICs when enabled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| AS-i Compliance | Full AS-Interface Complete Specification V3.0 compliance, including safety profile support and extended address mode (Profile 7.A.x.E) |
| Operating Temperature | −25 °C to +105 °C - qualified for under-hood industrial control cabinets and high-ambient motor drives |
| Current Drive | 55 mA via on-chip electronic inductor - eliminates need for external coil and reduces BOM count by one component |
| Crystal Support | Auto-detects 8 MHz or 16 MHz crystals - enables flexible clock source selection without firmware reconfiguration |
| Digital I/O | 4-bit configurable input (DI[3:0]) and 4-bit output (DO[3:0]) with per-bit inversion and filter enable - supports mixed-signal sensor/actuator interfacing |
| Safety Mode | Deterministic 4I/4O processing with ≤40 ms added fault reaction time only when disabled - guarantees A²SI-equivalent timing when Safety Mode is active |
| Package | SOP28 RoHS-compliant - compatible with standard surface-mount reflow profiles and higher thermal mass PCBs |
Pinout & Package
SOP28 package (5.3 mm × 10.2 mm, 1.27 mm pitch), rated for −25 °C to +105 °C operation, with exposed thermal pad for enhanced heat dissipation in sealed enclosures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| UIN / UOUT | AS-i bus power interface | UIN accepts 24 V AS-i bus voltage; UOUT supplies regulated 5 V to external logic - enables single-supply AS-i node design |
| ASIP / ASIN | Differential AS-i bus transceiver | Manchester-II encoded bidirectional data path - handles both physical layer signaling and collision detection per V3.0 spec |
| IRD | Addressing channel input | Supports AC current or CMOS-level IR-addressing for wireless module setup - decouples addressing from main bus traffic |
| DI[3:0] / DO[3:0] | Configurable digital I/O | Four independent input/output pins with per-pin inversion and filter enable - allows direct connection to sensors/valves without glue logic |
| P[3:0] / PST | Parameter port & strobe | Serial EEPROM programming interface - used during initial commissioning or field reconfiguration of device identity and mode |
| FID | Fault indication input | Monitors external power failure or thermal shutdown - triggers internal watchdog reset and status register flag |
| LED1 / LED2 | Status indicator outputs | Drive AS-i V3.0–compliant status LEDs (e.g., green/yellow) - supports all defined indication modes including safety state reporting |
Key Features
| Feature | Design Value |
|---|---|
| On-chip electronic inductor | Replaces external coil, reducing board area by ≥12 mm² and eliminating coil tolerance drift in temperature-critical environments |
| Configurable input filtering | 100 µs to 1 ms adjustable time constants per DI pin - suppresses EMI-induced glitches in noisy factory-floor wiring |
| Safety Mode enforcement | Locks out data preprocessing features (filtering/inversion) to guarantee ≤40 ms fault reaction time - required for certified AS-i Safety modules |
| Extended address mode (4I/4O) | Enables full 4-input/4-output processing in Profile 7.A.x.E - supports complex actuator feedback and diagnostics without external microcontroller overhead |
| Two-mode oscillator support | Automatic 8/16 MHz crystal detection - permits reuse of existing clock sources across product variants without layout change |
Applications
| AS-i Master Module | AS-i Safety Module |
|---|---|
Use Scenario: Central controller in industrial PLC rack managing up to 62 AS-i slaves over 100 m unshielded cable. IC Role / Device Role / Timing Role: Physical layer transceiver and protocol engine handling Manchester-II encoding, cyclic polling, and error recovery. Use Value: Enables single-chip master implementation with integrated UOUT 5 V regulator and EEPROM-based configuration storage - reduces component count by 3 vs discrete solutions. |
Use Scenario: Emergency stop circuit in machinery requiring SIL 2/PL d certification per EN 61508 and EN 62061. IC Role / Device Role / Timing Role: Deterministic safety I/O interface operating in AS-i Safety Mode with fixed 4I/4O timing and disabled preprocessing. Use Value: Guarantees ≤40 ms fault reaction time when Safety Mode is enabled - meets AS-i Safety specification for Category 3 architectures. |
| AS-i Repeater Node | High-Temp Sensor Interface |
Use Scenario: Signal booster extending AS-i network beyond 100 m limit in large-scale packaging lines. IC Role / Device Role / Timing Role: Bidirectional bus repeater with floating transmitter/receiver for symmetrical signal regeneration. Use Value: Maintains signal integrity across multiple segments using same 55 mA drive strength - avoids timing skew between upstream/downstream frames. |
Use Scenario: Proximity sensor node mounted near electric motors or hydraulic valves where ambient exceeds 85 °C. IC Role / Device Role / Timing Role: High-temperature-rated AS-i slave transceiver with thermal shutdown at 125 °C (TSD). Use Value: Operates continuously at +105 °C ambient - eliminates need for forced air cooling or derating in compact enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar AS-i interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ASI4U-G1-SR | SSOP28 package, −25 °C to +85 °C rating, identical functionality and pinout | Standard-temperature industrial use; not qualified for >85 °C ambient | Select for cost-sensitive non-thermal-critical deployments where SOP28 footprint is unnecessary |
| SAP5-G1-SR | Legacy AS-i IC with no on-chip inductor, requires external coil, no Safety Mode or IRD channel | Limited to basic slave/master roles; lacks extended address mode and safety certification support | Choose only for brownfield replacement where ASI4UE-E-G1-SR's advanced features introduce compatibility risk |
Compared with ASI4U-G1-SR, ASI4UE-E-G1-SR adds high-temp reliability and same-pinout SOP28 compatibility; versus SAP5-G1-SR, it delivers integrated power, safety certification pathways, and wireless setup - making it the only choice for new AS-i Safety or extended-temperature designs.
Availability
ASI4UE-E-G1-SR is available at Aetrix Electronics and suitable for AS-i master modules, safety-certified machine controls, high-temperature sensor interfaces, and repeater nodes requiring stable component supply across multi-year production cycles.
Supply support for ASI4UE-E-G1-SR 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
Integrated Device Technology (IDT), now part of Renesas Electronics, is a fabless semiconductor company specializing in timing, interface, and RF solutions for industrial and communications infrastructure.
The ASI4U family was designed specifically for AS-Interface V3.0 networks - targeting deterministic, low-cost, two-wire interconnection of sensors and actuators in harsh industrial environments.
FAQ
What is the maximum ambient temperature rating for the ASI4UE-E-G1-SR?
The ASI4UE-E-G1-SR is rated for continuous operation from −25 °C to +105 °C ambient temperature. This extended range is achieved through SOP28 package qualification and internal thermal protection that triggers shutdown at 125 °C junction temperature. The rating makes ASI4UE-E-G1-SR suitable for under-hood industrial control cabinets and motor-drive proximity applications where standard ASI4U variants would require derating or forced cooling.
Does the ASI4UE-E-G1-SR support AS-i Safety Mode, and how is it configured?
Yes, the ASI4UE-E-G1-SR supports AS-i Safety Mode, which must be enabled via EEPROM configuration to guarantee deterministic 4I/4O timing and ≤40 ms fault reaction time. Configuration requires disabling data input filters and synchronous I/O mode through the P[3:0]/PST parameter port. The safety code table in the host microcontroller must also be updated to accept only sequences containing "1110" - a requirement documented in the ASI4U datasheet Section 1.1.
Is the ASI4UE-E-G1-SR pin-compatible with the legacy A²SI IC?
No, the ASI4UE-E-G1-SR is not pin-compatible with the A²SI IC. While functionally compatible and designed for drop-in replacement in many layouts, its pin assignment differs - particularly for U5R, CAP, and IRD signals. The datasheet explicitly states ASI4U is "function and pin compatible with the A²SI IC" only for ASI4U (SSOP28, standard temp), not ASI4UE-E-G1-SR (SOP28, extended temp). Layout adaptation is required for A²SI replacement.
What crystal frequencies does the ASI4UE-E-G1-SR support, and how is selection handled?
The ASI4UE-E-G1-SR supports both 8 MHz and 16 MHz fundamental-mode crystals, with automatic frequency detection on power-up. No external configuration or strap pins are needed - the IC reads oscillator startup behavior and configures internal dividers accordingly. This allows a single BOM to serve dual-clock designs and simplifies qualification across different AS-i network timing requirements.
Can the ASI4UE-E-G1-SR operate without an external coil, and what is the current drive capability?
Yes, the ASI4UE-E-G1-SR integrates an electronic inductor and operates fully without an external coil. Its AS-i transmitter delivers 55 mA peak current into the bus, meeting AS-Interface V3.0 requirements for high-power symmetrical signaling. This eliminates coil-related tolerances, temperature drift, and board space - reducing total solution size and improving long-term reliability in vibration-prone environments.
ASI4UE-E-G1-SR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Actuator Sensor Interface
- Interface:
- AS-i
- Voltage - Supply:
- 16V ~ 33.1V
- Supplier Device Package:
- 28-SOIC
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
ASI4UE-E-G1-SR FAQ
1.How can I place an order for ASI4UE-E-G1-SR through Aetrix?
Please submit a Request for Quotation (RFQ) for ASI4UE-E-G1-SR 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 ASI4UE-E-G1-SR reliable?
The price and inventory of ASI4UE-E-G1-SR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ASI4UE-E-G1-SR is usually 5 days.
3.What payment methods are accepted for ASI4UE-E-G1-SR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ASI4UE-E-G1-SR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ASI4UE-E-G1-SR?
ASI4UE-E-G1-SR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ASI4UE-E-G1-SR 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 ASI4UE-E-G1-SR?
For technical support, including ASI4UE-E-G1-SR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ASI4UE-E-G1-SR requirements.
6.How does Aetrix verify that ASI4UE-E-G1-SR is sourced from the original manufacturer or authorized distributors?
All ASI4UE-E-G1-SR 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 ASI4UE-E-G1-SR meets industry standards.
7.What is the process for return or replacement of ASI4UE-E-G1-SR?
All ASI4UE-E-G1-SR units undergo pre-shipment inspection (PSI). If there is an issue with ASI4UE-E-G1-SR, 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 ASI4UE-E-G1-SR part is unused and in its original packaging.
Return procedure for ASI4UE-E-G1-SR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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