SERC816/TR RS-422 RS-423 RS-485 by STMicroelectronics

SERCOS Interface controller

Semiconductors - ICs
> Drivers & Interfaces
> Specialized Interfaces
Status: Active
Series: SERC816
RoHS: Compliant
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The SERCOS interface controller SERCON816 is an integrated circuit for SERCOS interface communication systems. The SERCOS interface is a digital interface for communication between systems which have to exchange information cyclically at short, fixed intervals (62,5 s to 65 ms). It is appropriate for the synchronous operation of distributed control or test equipment (e.g. connection between drives and numeric control). A SERCOS interface communication system consists of one master and several slaves. These units are connected by a fiber optical ring. This ring starts and ends at the master. The slaves regenerate and repeat their received data or send their own telegrams. By this method the telegrams sent by the master are received by all slaves while the master receives data telegrams from the slaves. The optical fiber assures a reliable high-speed data transmission with excellent noise immunity. The SERCOS interface controller contains all the hardware-related functions of the SERCOS interface and considerably reduces the hardware costs and the computing time requirements of the microprocessor. It is the direct link between the electro-optical receiver and transmitter and the microprocessor that executes the control algorithms. The SERCON816 can be used both for SERCOS interface masters and slaves. The circuit contains the following functions (Fig. 1): A serial interface for making a direct connection with the optical receiver and transmitter of the fiber optic ring or with drivers to an electric ring or bus. Data and clock regeneration, the repeater for ring topologies and the serial transmitter and receiver are integrated. The signals are monitored and test signals generated. The serial interface operates up to 16 Mbaud without external circuitry. A dual port RAM (2048 * 16 bit) for control and communication data. The organization of the memory is flexible. Telegram processing for automatic transmission and monitoring of synchronous and data telegrams. Only transmission data which is intended for the particular interface user is processed. The transmitted data is either stored in the internal RAM (single or double buffer) or transferred via direct memory access (DMA). The transmission of service channel information over several communication cycles is executed automatically. In addition to the SERCOS interface the SERCON816 can also be used for other real-time communications tasks. As an alternative to the fiber optical ring also bus topologies with RS-485 signals are supported (Fig. 4). The SERCON816 is therefore suitable for a wide range of applications. Remark: The SERCON816 is based on the former SERCON410B SERCOS interface controller.

Where to Buy

Prices starting from US$20.48

Distributor Stock
Logo for Avnet Silica
Avnet Silica
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500
in stock
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Newark Electronics
from US$22.40
0
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Avnet America
from US$20.48
0
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element14
from US$26.40
0
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Farnell
from US$24.74
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EBV Elektronik
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Features

Automatic transmission of synchronous and data telegrams in the communication cycle
Modulation of power of optical transmitter diode
Synchronization by external signal
Flexible RAM configuration, communication data stored in RAM (single or double buffer) or transfer via DMA
Automatic service channel transmission
Timing control signals
Compatible mode to SERCON410B SERCOS interface controller
Watchdog to monitor software and external synchronization signals
100-pin plastic flat-pack casing
Internal repeater for ring connections
Maximum transmission rate of 16 Mbaud with internal clock recovery
Single-chip controller for SERCOS interface
8/16-bit bus interface, Intel and Motorola control signals
Real time communication for industrial control systems
Data communications via optical fiber rings, RS 485 rings and RS 485 busses
Full duplex operation
Dual port RAM with 2048 word *16-bit

Last 6 months Inventory & Pricing History

Alternative Descriptions

SERCOS Interface Controller 100-Pin PQFP Tray | Avnet Silica
Interface Controller, 85Deg C, Qfp-100 | Newark Electronics
SERCOS INTERFACE CTRL, -40 TO 85DEG C | element14

Frequently Asked Questions

Where can I find additional details, specifications and documents for a SERC816/TR?

Additional datasheets, footprints and schematics for SERC816/TR are listed on our Part Details page. You can also find images and similar parts to SERC816/TR on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for SERC816/TR on our Product Comparison page. Access via the 'View Pricing & Stock' button to view SERC816/TR price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does SERC816/TR fall under?

The SERC816/TR is listed under Interfaces and Transceivers > RS-422 RS-423 RS-485.

Can I view similar or alternative parts?

You can view similar parts to SERC816/TR when available in the RS-422 RS-423 RS-485 range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the SERC816/TR you can contact the distributor directly for product support, shipping queries etc.

Is the SERC816/TR RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by STMicroelectronics.

Which authorised distributors for SERC816/TR have stock available?

Authorised distributors including Avnet Silica, Newark Electronics, Avnet America, element14 and Farnell have stock available or on a lead time for SERC816/TR.

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