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Renesas ASI4UE-F-G1-SR
- Part No.:
- ASI4UE-F-G1-SR
- Manufacturer:
- Renesas
- Category:
- Specialized
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
ASI4UE-F-G1-SR.pdf
- Description:
- IC INTERFACE SPECIALIZED V3.0
- Quantity:
- Payment:
- Shipping:
Inventory:1,126
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Product details
Overview
ASI4UE-F-G1-SR from Integrated Device Technology is a universal AS-i interface IC compliant with AS-Interface Complete Specification V3.0, functioning as master/slave/repeater/bus-monitor in two-wire fieldbus systems. It delivers 55 mA current drive via on-chip electronic inductor, supports -40°C to +85°C operation, and integrates EEPROM for configuration storage. Used in industrial sensor/actuator interconnection with power+data over unshielded cable.
For engineers reviewing the ASI4UE-F-G1-SR datasheet, ASI4UE-F-G1-SR pinout, ASI4UE-F-G1-SR application, or ASI4UE-F-G1-SR equivalent, key selection criteria include AS-i V3.0 compliance, SSOP28 package compatibility, safety-mode timing guarantees, IR-addressing support, and dual-crystal frequency auto-detection (8/16 MHz).
Technical Context
The ASI4UE-F-G1-SR implements full AS-i physical layer and protocol handling including Manchester-II modulation/demodulation, synchronous data I/O mode, and configurable data input filtering. Its floating transmitter/receiver architecture enables symmetrical high-power bus driving while supporting both AC current and CMOS input modes on the IRD pin.
It features an integrated clock watchdog and thermal/overload protection, with dedicated pins for fault indication (FID), parameter strobing (PST), and LED status outputs (LED1/LED2). EEPROM stores ID code extension, input filter settings, and safety-mode configuration to ensure deterministic behavior across power cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| AS-i Compliance | Full AS-Interface Complete Specification V3.0 compliance, including safety-mode timing guarantees |
| Operating Temp | -40°C to +85°C ambient range, validated for industrial environments with extended thermal shutdown threshold |
| Package | SSOP28 RoHS-compliant package, 5.3 mm × 10.2 mm footprint, 0.65 mm pitch |
| Crystal Support | Automatic 8 MHz or 16 MHz crystal frequency detection on OSC1/OSC2 pins |
| Current Drive | 55 mA output capability from on-chip electronic inductor, eliminating external coil in standard applications |
| I/O Count | 4 digital inputs (DI[3:0]), 4 digital outputs (DO[3:0]), plus dedicated IRD, FID, PST, and parameter port P[3:0] |
| EEPROM | Internal non-volatile memory storing address, safety configuration, input filters, and ID_Code_Extension_1 |
Pinout & Package
ASI4UE-F-G1-SR uses a 28-pin SSOP package (5.3 mm × 10.2 mm, 0.65 mm pitch) with exposed thermal pad. Pin assignments are defined per IDT datasheet Figure 6.1 and Table 6.1.
| 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 or LEDs |
| ASIP / ASIN | Differential AS-i bus transceiver | Floating transmitter/receiver pair enabling symmetrical high-power data transmission over two-wire cable |
| IRD | Addressing channel input | Supports AC current or CMOS input modes for wireless module setup and extended addressing |
| FID | Fault indication input | Monitors power failure or external fault conditions; triggers internal safety response in Safety Mode |
| P[3:0] / PST | Parameter port | Configures device mode, input filters, data inversion, and safety parameters via EEPROM programming |
| DI[3:0] / DO[3:0] | Data I/O ports | 4-bit bidirectional data path with pre-processing (filtering, bit-selective inversion) and synchronous I/O mode |
| LED1 / LED2 | Status indicator outputs | Drive external LEDs per AS-i V3.0 status indication modes (e.g., bus activity, error, safety state) |
| OSC1 / OSC2 | Crystal oscillator interface | Accepts 8 MHz or 16 MHz fundamental-mode crystals with automatic frequency detection |
Key Features
| Feature | Design Value |
|---|---|
| Universal AS-i node support | Single IC serves master, slave, repeater, and bus-monitor roles without hardware change |
| Safety Mode operation | Deterministic 40 ms fault reaction time guarantee when enabled, matching legacy A²SI timing |
| On-chip electronic inductor | Eliminates need for external coil in standard applications, reducing BOM count and PCB area |
| Configurable data preprocessing | Bit-selective input inversion and programmable RC-filter time constants (1–100 ms) reduce microcontroller load |
| IR-addressing channel | Enables wireless setup of AS-i nodes using infrared communication without modifying bus wiring |
| Dual-crystal auto-detection | Automatic recognition of 8 MHz or 16 MHz crystals simplifies design reuse across timing-critical applications |
Applications
| AS-i Master Module | AS-i Slave Module |
|---|---|
Use Scenario: Central controller in factory automation system managing up to 31 AS-i devices over single two-wire cable. IC Role / Device Role / Timing Role: ASI4UE-F-G1-SR acts as master node, generating Manchester-II encoded frames, polling slaves, and decoding responses with <1 µs jitter tolerance. Use Value: Enables deterministic cycle times down to 5 ms with built-in communication monitor and clock watchdog ensuring robust real-time control. | Use Scenario: Distributed I/O node connecting proximity sensors and solenoid valves in packaging machinery. IC Role / Device Role / Timing Role: ASI4UE-F-G1-SR functions as slave, extracting power and data from AS-i bus, processing DI[3:0]/DO[3:0], and responding within 100 µs latency window. Use Value: On-chip 55 mA driver powers bus segments directly; configurable input filters suppress EMI-induced false triggers in noisy factory environments. |
| AS-i Safety Module | AS-i Bus Monitor |
Use Scenario: Emergency stop subsystem requiring SIL2 compliance in CNC machine tool control cabinet. IC Role / Device Role / Timing Role: ASI4UE-F-G1-SR operates in Safety Mode, enforcing strict 40 ms fault reaction time and disabling input filters to match A²SI timing behavior. Use Value: Validated safety path ensures no increase in diagnostic coverage loss versus legacy A²SI, preserving existing certification documentation. | Use Scenario: Diagnostic unit installed between AS-i master and slave segment to log communication errors and bus waveform distortions. IC Role / Device Role / Timing Role: ASI4UE-F-G1-SR runs in monitor mode, capturing all AS-i traffic without altering frame timing or bus loading characteristics. Use Value: Dedicated error signal outputs (Table 4.18) feed external FPGA for real-time bus health analysis without interrupting production line operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar AS-i interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| A²SI | Legacy IDT AS-i IC; no data preprocessing, fixed 8 MHz crystal, no IRD channel, no Safety Mode | Limited to standard AS-i V2.x designs; cannot support extended addressing or safety-certified upgrades | Select A²SI only for drop-in replacement in legacy boards where AS-i V3.0 features are unused |
| SAP5 | Successor IDT AS-i IC with enhanced diagnostics, wider temp range (-40°C to +105°C), and updated EEPROM structure | Better suited for new designs requiring extended temperature operation and improved fault logging | Choose SAP5 for greenfield projects needing longer lifecycle support and higher ambient tolerance |
Compared with A²SI and SAP5, ASI4UE-F-G1-SR provides verified AS-i V3.0 compliance with IR-addressing and Safety Mode while maintaining SSOP28 pinout compatibility-making it optimal for upgrading existing AS-i master/slave modules without layout changes.
Availability
ASI4UE-F-G1-SR is available at Aetrix Electronics and suitable for industrial automation, factory floor I/O systems, and safety-critical AS-i network deployments requiring stable component supply across extended product lifecycles.
Supply support for ASI4UE-F-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, communications, and computing markets.
The ASI4U family was designed specifically for AS-i fieldbus implementations, delivering full V3.0 compliance, safety-mode determinism, and flexible node-role configuration in compact packages.
FAQ
What is the operating temperature range specified for ASI4UE-F-G1-SR?
The ASI4UE-F-G1-SR is rated for operation from -40°C to +85°C ambient temperature. This extended low-temperature capability distinguishes it from the standard ASI4U variant (-25°C to +85°C) and supports deployment in cold-storage facilities and outdoor industrial enclosures. The specification is validated per IDT datasheet Section 2.2 and confirmed by thermal shutdown threshold testing at 150°C junction temperature.
Does ASI4UE-F-G1-SR support both 8 MHz and 16 MHz crystals?
Yes, ASI4UE-F-G1-SR supports automatic detection of either 8 MHz or 16 MHz fundamental-mode crystals connected to OSC1 and OSC2 pins. This feature eliminates manual configuration and allows reuse of the same PCB layout across timing-critical applications requiring different cycle times. The auto-detection mechanism is implemented in hardware and requires no firmware intervention.
Is ASI4UE-F-G1-SR pin-compatible with the legacy A²SI IC?
Yes, ASI4UE-F-G1-SR is functionally and pin-compatible with IDT's A²SI IC, enabling direct replacement in existing board layouts. The SSOP28 footprint, pin assignments, and power sequencing behavior match exactly. However, safety-critical applications must enable Safety Mode in ASI4UE-F-G1-SR to maintain identical fault reaction timing as the A²SI.
How does the Safety Mode in ASI4UE-F-G1-SR ensure compliance with AS-i safety requirements?
ASI4UE-F-G1-SR Safety Mode disables data input filtering and synchronous I/O to guarantee ≤40 ms fault reaction time-matching the legacy A²SI timing. It enforces strict EEPROM configuration rules (e.g., permitting only safety code sequences containing "1110") and routes inputs through a dedicated low-latency path. This mode is required for SIL2-certified AS-i Safety modules replacing A²SI-based designs.
What is the purpose of the IRD pin on ASI4UE-F-G1-SR?
The IRD (Infrared Data) pin on ASI4UE-F-G1-SR serves as an additional addressing channel supporting AC current or CMOS input modes. It enables wireless setup of AS-i nodes using infrared handsets without modifying bus wiring, simplifying commissioning in hard-to-reach locations. In master mode, IRD carries Manchester-II modulated signals for remote parameter programming and node identification.
ASI4UE-F-G1-SR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 28-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Actuator Sensor Interface
- Interface:
- AS-i
- Voltage - Supply:
- 16V ~ 33.1V
- Supplier Device Package:
- 28-SSOP
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
ASI4UE-F-G1-SR FAQ
1.How can I place an order for ASI4UE-F-G1-SR through Aetrix?
Please submit a Request for Quotation (RFQ) for ASI4UE-F-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-F-G1-SR reliable?
The price and inventory of ASI4UE-F-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-F-G1-SR is usually 5 days.
3.What payment methods are accepted for ASI4UE-F-G1-SR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ASI4UE-F-G1-SR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ASI4UE-F-G1-SR?
ASI4UE-F-G1-SR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ASI4UE-F-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-F-G1-SR?
For technical support, including ASI4UE-F-G1-SR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ASI4UE-F-G1-SR requirements.
6.How does Aetrix verify that ASI4UE-F-G1-SR is sourced from the original manufacturer or authorized distributors?
All ASI4UE-F-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-F-G1-SR meets industry standards.
7.What is the process for return or replacement of ASI4UE-F-G1-SR?
All ASI4UE-F-G1-SR units undergo pre-shipment inspection (PSI). If there is an issue with ASI4UE-F-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-F-G1-SR part is unused and in its original packaging.
Return procedure for ASI4UE-F-G1-SR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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