Product overview
Description
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):
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.
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All 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
EDA Symbols, Footprints and 3D Models
Quality and Reliability
Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
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SERC816 | Active | PQFP 100 14x20x2.7 | Industrial | Ecopack2 | |
SERC816/TR | Active | PQFP 100 14x20x2.7 | Industrial | Ecopack2 |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | Autoshutdown | ||
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SERC816 | | | distributors No availability of distributors reported, please contact our sales office |
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SERC816/TR | | | distributors No availability of distributors reported, please contact our sales office |
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SERC816 Active
SERC816/TR Active
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors