ASI4UE-E-G1-ST - AS-Interface v3.0 Universal Slave IC | Renesas
N.º de pieza: ASI4UE-E-G1-ST ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $14.2 | $14,20 |
| 10 | $12.75 | $127,50 |
| 100 | $10.1 | $1.010,00 |
| 500 | $8.65 | $4.325,00 |
| 1.000 | $7.4 | $7.400,00 |
ASI4UE-E-G1-ST Descripción general
An AS-Interface (AS-i) IC is a specialized transceiver integrated circuit that implements the physical and data-link layers of the AS-i fieldbus. The bus was created to economically connect binary sensors and actuators over a single unshielded twisted pair, eliminating the analog I/O modules and analog wiring harnesses traditionally required in factory automation. AS-i transceivers sit between a microcontroller and the bus, handling Manchester-coded transmission, slave AC modulation/demodulation, and node addressing that complements the ASI4U IC. The ASI4UE-E-G1-ST extends this role with full AS-i v3.0 compliance and A²SI pin compatibility for migration from older 3rd-party AS-i slave ASICs.
Key features include AS-Interface Complete Specification v3.0 compliance, integrated non-volatile EEPROM for storage of slave parameters and node address, an AS-i safety option for short response times on safety-related events, A²SI function and pin compatibility, programmable by stationary or handheld programming devices, and operation over the industrial -40C to +85C temperature range. The wide-body 28-SOIC package facilitates robust through-hole-style PCB mounting for the high-voltage industrial environment associated with the 24 V AS-i bus rail.
Architecturally, the ASI4UE-E-G1-ST combines a high-voltage bus transceiver front-end, an analog modulator/demodulator block implementing the AS-i AC current modulation scheme, a Manchester encoder/decoder, an integrated oscillator, and a serial peripheral interface (SPI) for connection to an external microcontroller. Configuration data, the AS-i slave address, and ID codes are stored in the internal EEPROM, which is programmable in-circuit by a handheld or stationary programmer. The special AS-i safety option provides deterministic short response times for safety-at-work applications.
Typical applications include industrial binary sensor modules, industrial valve manifolds, indicator lights and stack lights, AS-i safety modules, AS-i gateway modules, AS-i slave I/O blocks, and AS-i repeater systems.
When designing with the ASI4UE-E-G1-ST, place 100 nF decoupling close to VCC and follow the reference PCB layout in the datasheet to meet EMI/EMC compliance. The integrated oscillator minimizes external components and the EEPROM eliminates external parameter memory.
This page synthesizes distributor pricing, drop-in alternatives, and practical AS-i bus design notes not found in the manufacturer datasheet.
Alternativas directas para ASI4UE-E-G1-ST — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con ASI4UE-E-G1-ST (mismo factor de forma y huella) — difiere en Operating Temperature, Package, Programming Interface.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
ASI4UE-G1-SR
✅ Sustitución directa✓ En stock
$5.45 / unidad
Ver hoja de datos →ASI4UE-E-G1-SR
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ASI4UE-E-G1-ST
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$7.4 / unidad
Ver hoja de datos →ASI4UE-E-G1-ST Especificaciones
| Función | AS-Interface (AS-i) Slave Transceiver / Network Interface |
| AS-Interface Specification | Complete Specification v3.0 |
| Compliance / Compatibility | A2SI pin and function compatible |
| Data Storage | Internal EEPROM for slave parameters and node address |
| Programming Interface | In-circuit programmable by stationary or handheld programmer |
| AS-i Safety Option | Yes (short response time for safety events) |
| Role | Slave node (function and pin compatible with A2SI) |
| Bus Topology | Two-wire unshielded cable (power + data) |
| Supply Voltage (Logic Domain) | 3.3 V typical digital interface |
| Bus Supply | 29.5 V to 31.6 V AS-i network nominal |
| Temperatura de funcionamiento | -40C to +85C |
| Encapsulado | 28-SOIC wide-body (SOP-28) |
| Tipo de montaje | Surface Mount |
| Estado RoHS | Compliant |
Configuración de pines de ASI4UE-E-G1-ST
| Pin 1 | AS+ — AS-i bus positive terminal (data + power) |
| Pin 2 | AS- — AS-i bus negative terminal (data + power return) |
| Pin 3 | VCC — Logic supply for digital interface |
| Pin 4 | GND — Logic ground |
| Pin 5 | RESET — Reset input (active low) |
| Pin 6 | OSC1 — Oscillator input |
| Pin 7 | OSC2 — Oscillator output |
| Pin 8 | TXD — UART transmit data to host microcontroller |
| Pin 9 | RXD — UART receive data from host microcontroller |
| Pin 10 | CS — Chip select for host interface |
| Pin 11 | SCLK — Serial clock for host interface |
| Pin 12 | MOSI — Master out slave in for host interface |
| Pin 13 | MISO — Master in slave out for host interface |
| Pin 14 | IRQ — Interrupt request to host microcontroller |
| Pin 15 | A0 — Address/Configuration line 0 |
| Pin 16 | A1 — Address/Configuration line 1 |
| Pin 17 | A2 — Address/Configuration line 2 |
| Pin 18 | A3 — Address/Configuration line 3 |
| Pin 19 | TEST — Test mode enable |
| Pin 20 | PROG — Programming mode enable |
| Pin 21 | SAFETY — AS-i safety option enable |
| Pin 22 | VBUS — Bus supply monitor |
| Pin 23 | BIAS — Bias network |
| Pin 24 | FILTER — Analog filter node |
| Pin 25 | DET — Signal detect output |
| Pin 26 | DRV — Bus driver control |
| Pin 27 | NC — Not connected (per datasheet) |
| Pin 28 | EP — Exposed pad (thermal/ground, solder to PCB ground plane) |
Aplicaciones típicas
ASI4UE-E-G1-ST es adecuado para 6 aplicacións: Industrial Binary Sensor Modules, AS-i Valve Manifold Connectivity, Industrial Stack Lights and Indicators, AS-i Safety Modules (Safety at Work), AS-i Slave I/O Blocks (Digital I/O Modules), AS-i Gateway and Repeater Modules.
Industrial Binary Sensor Modules
The ASI4UE-E-G1-ST is the canonical AS-i slave transceiver for connecting discrete binary sensors to an AS-i master over a single two-wire unshielded cable. The AS-i Complete Specification v3.0 compliance guarantees interoperability with every compliant master, while the integrated EEPROM stores the node address and ID codes so the sensor module is configurable without a separate EEPROM. The 28-SOIC wide-body package supports industrial -40C to +85C operation and is suited for IP67 sensor housings in factory automation lines.
Recomendado
AS-i Valve Manifold Connectivity
Pneumatic valve manifolds are a classic AS-i use case: the ASI4UE-E-G1-ST handles the bus transceiver function, the integrated oscillator eliminates an external crystal, and the on-chip analog front-end runs the AS-i current-modulation scheme. Designers benefit from the A2SI pin compatibility for legacy migration, the in-circuit programmable EEPROM for late-stage node addressing, and the industrial -40C to +85C temperature window that supports unheated cabinets and outdoor-mounted manifolds.
Recomendado
Industrial Stack Lights and Indicators
AS-i stack lights replace hard-wired 24V indicator towers with a single two-wire bus cable. The ASI4UE-E-G1-ST serves each lamp-driver node, providing the bus interface and the non-volatile storage that holds the indicator color mapping. Its 28-SOIC wide-body package simplifies PCB layout for the high-side driver circuits that switch the indicator lamps, while the v3.0 compliance ensures the stack light nodes enumerate correctly with any compliant AS-i master gateway.
Recomendado
AS-i Safety Modules (Safety at Work)
The ASI4UE-E-G1-ST includes the AS-i safety option that delivers short, predictable latency on safety-emitted interrupts. Used inside an AS-i safety module (for example, an emergency-stop or interlock module), it provides the bus interface while the host microcontroller runs the safety logic. The -40C to +85C operating range and the integrated EEPROM for safety configuration make the part a viable choice for safety-rated I/O blocks connected to an AS-i safety master.
Recomendado
AS-i Slave I/O Blocks (Digital I/O Modules)
Digital I/O blocks aggregate 4-8 binary signals over AS-i. The ASI4UE-E-G1-ST handles the bus interface in each slave block, while the host microcontroller reads inputs and drives outputs through optocouplers. The integrated oscillator and EEPROM keep the bill of materials minimal, which matters in cost-sensitive I/O blocks. The wide-body 28-SOIC package allows generous creepage between the bus pins and the logic interface pins, supporting IEC 61131-2 style industrial certification.
Recomendado
AS-i Gateway and Repeater Modules
AS-i gateways translate between an AS-i network and a higher-level fieldbus (PROFIBUS, PROFINET, EtherNet/IP). The ASI4UE-E-G1-ST is the bus transceiver on the gateway board, paired with a host microcontroller that runs the gateway protocol stack. AS-i repeater modules can use the same part to retransmit the bus signal at extended cable lengths. The v3.0 compliance and A2SI compatibility make the part the standard silicon for both gateway and repeater designs.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ASI4UE-E-G1-ST — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ASI4UE-G1-SR | ASI4UE-E-G1-SR | ASI4UE-G1-ST |
|---|---|---|---|---|
| Package | 28-SOIC wide-body (SOP-28, 300-mil) | 28-SOIC wide-body - same | 28-SOIC wide-body - same | 28-SSOP - different (not drop-in) |
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| AS-Interface Specification | Complete Specification v3.0 | Complete Specification v3.0 | Complete Specification v3.0 | Complete Specification v3.0 |
| Integrated EEPROM | Yes (non-volatile configuration) | Yes | Yes | Yes |
| AS-i Safety Option | Yes | Yes | Yes | Yes |
| A2SI Compatibility | Function + pin compatible | Function + pin compatible | Function + pin compatible | Function + pin compatible |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Mounting Type | Surface Mount (wide-body SOIC) | Surface Mount (wide-body SOIC) | Surface Mount (wide-body SOIC) | Surface Mount (SSOP) |
| RoHS Compliance | Compliant | Compliant | Compliant | Compliant |
| Lifecycle Status | Active | Active | Active | Active |
Diferenciadores clave
- AS-i Complete Specification v3.0 compliance with A2SI pin compatibility (frente a A2SI (third-generation AS-i slave IC from competitor))
- Integrated non-volatile EEPROM (frente a Discrete AS-i slave ASIC with external EEPROM)
- AS-i safety option for short safety-event latency (frente a Standard AS-i slave transceivers without safety option)
Notas de diseño
Place a 100 nF ceramic decoupling capacitor as close as possible to the VCC (pin 3) and GND (pin 4) of the ASI4UE-E-G1-ST. The wide-body SOIC package leaves adequate copper area for a small ground plane under the digital interface pins. Route the bus pins (AS+ and AS-) directly to the connector with a short, low-inductance trace and avoid running digital signals parallel to the bus traces to minimize crosstalk.
Do not omit the EEPROM programming sequence during module commissioning. The integrated EEPROM stores the AS-i slave address and ID codes, and the node will fail enumeration if the EEPROM is blank. Use the Renesas-recommended handheld or stationary programming device to write the address before connecting the node to a powered AS-i network.
The AS-i bus uses a current-modulation scheme with a center frequency of approximately 100 kHz. Keep the bus trace impedance and length matched to the network specifications in the AS-i Complete Specification. Excessive bus capacitance from long cables or improper termination will degrade the modulation waveform and cause intermittent communication errors, especially in safety-related applications.
Información de cumplimiento
RoHS compliant per Renesas product page. AEC-Q100 is not applicable because the part targets industrial factory automation, not automotive applications. REACH compliance assumed per Renesas corporate policy.
