EPC120 EPC [Espros Photonics corp], EPC120 Datasheet
EPC120
Related parts for EPC120
EPC120 Summary of contents
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... Fully integrated Light-Barrier Chips with 2-Wire Bus Interface General Description The epc120 is a general purpose, fully integrated self-contained CMOS circuit to be used in light-barrier applications. The chips contain a controller which drives an LED, typically an IR-LED. The LED is used in a pulsed mode to increase the signal-to-noise ratio even when there is very strong sunlight biasing the photo diode ...
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... N GND 0 0.5 DD 0.5 0.7 1.3 0.1 30 200 0 6µ 6µs 1.4 1.6 1.8 Datasheet epc12x - V2.1 www.espros.ch epc120 Units V V °C % Units MHz ppm µ kΩ RMS 20 ...
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... If the input current pulse is above this level, the recovery time t is undefined (refer to section 'Other REC Parameters') After a strong current pulse (I = 100µA) pulse epc120 Values Units dependent on settings µA Programmable between µs 1 and 8 dependent on settings µs Datasheet epc12x - V2.1 www.espros.ch ...
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... Not connected. Leave that pin floating. Not connected. Connect this pin with VSS. ... File: This document is confidential and protected by law and international trades. It must not be shown to any third party nor be copied in any form without our written permission 4 epc120 GND ...
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... LED light pulse width, etc. allow the device to be parametrized in the final system (OTP memory). The bus controller activates the emitting side of the epc120 and reads the status of the levels at the photodiode input. The status of the answers to the interface chip can be 'no light pulse received', 'low level light pulse received' and 'high level light pulse received' ...
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... In a system with several reflective light barrier beams, each individual light barrier contains an emitter and a receiver. They are located at the same place receiver acts a photodiode and as an emitter a LED. Both can be controlled by only one single epc120. In contrast to the epc11x-family, which are also light barrier chips, the epc120 can be used in a large distributed system. The devices are synchronized over the 2-wire bus line, organized by one epc100 and a microcontroller ...
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... If there is no obstacle between epc120 and his reflector, the element receives this light pulse and stores it into a local memory. 4. The bus controller reads out the content of the memory in the epc120 chip and stores the status (light beam interrupted or not interrupted) into its data memory. ...
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... Chapter Error: Reference source not found on Corner Inductor Bus Wire Length 0.5 MHz 16µH 12 … 100m 1 MHz 8µH 6 … 12m 2 MHz 4µH 3 … MHz 2µH ≤ 3m Receiver Command Data Received Message Error Correction Manchester Decoder + Error Detection A/D Converter Datasheet epc12x - V2.1 www.espros.ch epc120 3 ...
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... Figure 9: Bus termination network Parity Bits Register Data Parity Bits Datasheet epc12x - V2.1 epc120 www.espros.ch ...
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... ESPROS Photonics Corporation Characteristics subject to change without notice 1.78 3.16 5.62 10 17.78 31.62 56.23 100 Pitch [cm] T DataRate Figure 11: Manchester encoded signal on the bus should range of 250 to 500 mV. Ideal for this setting is a swing voltage epc120 100 of the S measured on the bus should be min. ...
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... Parameter Memory The epc120 device contains a memory to store the application parameters. The following classes of data are stored on each device: • Unique chip ID and chip adjustments (factory set) • Physical device address in the application, representing the beam number • Application parameters This data can be permanently stored in a read-only memory is copied from the ROM to the RAM ...
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... Data rate on the 2-wire bus 9 Values Default Setting Recommended Setting 0 250 kbit the physical 2-wire bus length 100 meters 1 500 kbit Mbit Mbit/s if the physical 2-wire bus length is less than 3 meters ...continued on next page... 12 X (typical setting) Datasheet epc12x - V2.1 epc120 www.espros.ch ...
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... Table 3: epc120 Registers 0 and 16 Function This bit will automatically be set when register 17 is programmed. Values Register 17 is not programmed Register 17 is programmed no function, must be set to “0” must be set to “010” Table 4: epc120 Registers 1 and 17 13 epc120 Datasheet epc12x - V2.1 www.espros.ch ...
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... Settling time delay from inactive to active mode Values Default Setting Comments Table 5: epc120 Registers 2 and >=60μs SCAN <60μs SCAN Datasheet epc12x - V2.1 epc120 www.espros.ch ...
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... Detection level for the comparator on the 2-wire bus. The level represents the optimum sig - nal amplitude on the bus. 10 Values Default Setting Recommended 0 50mV X 1 n/a 0 100mV 1 200mV must be set to “010” Table 6: epc120 Registers 3 and 19 Bit # ...
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... The individual epc120 elements at the 2-wire bus are normally in a sleep mode in order to keep the overall power consumption as low as possible. Thus, an epc120 element has to be activated before it can be used. This wakeup procedure needs a certain time until all internal operating levels have been stabilized ...
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... Settling Settling Figure 15: Timing of the scan process : SCAN =TSET 3⋅T T DEL SCAN T =31∗T ∗k SCANmin CLK 17 epc120 Out n+1 Out n+2 SCAN n+4 SCAN n+5 Out n+1 SCAN n+4 Out n+2 Output, Standby Receive Window Output, Standby Standby Standby <name> 1μs. Thus, the minimal scan CLK Datasheet epc12x - V2 ...
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... ESPROS Photonics Corporation Characteristics subject to change without notice Figure 16: SPI bus timing Conditions/Comments SO, SCK Register Address or Cmd Extension 18 Values Min. Typ. Max Data Datasheet epc12x - V2.1 www.espros.ch epc120 Units MHz ...
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... Broadcast 62 both 62 both 80 both 62 Designed Approved Scale Page ...D contains the returned data Datasheet epc12x - V2.1 epc120 Dn Returned Data Yes Yes Yes Yes No 26.02.2009 <Text> <Text> <Date> M 1:1 DIN A3 1 Part No. <x000 000> ...E contains 0 3 www.espros.ch 26.05.2011 ...
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... Table 8: Result of a SCAN command Extension Amplitude … … … 111 10000 1xxxxx 25nA x1xxxx 50nA xx1xxx 100nA xxx1xx 100μA xxxx1x 500μA DC xxxxx1 2mA DC Table 9: Self Test 20 Current Shape 4 Pulse Pulse Pulse Pulse DC DC Datasheet epc12x - V2.1 epc120 www.espros.ch ...
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... D 5 bit register address 0 4 … bit returned data (one complete register) 20 Table 10: Result of a READ command ...D contains the address, D ...D contains the returned <LST> . Datasheet epc12x - V2.1 epc120 10.09.2010 Page 1 www.espros.ch ...
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... ESPROS Photonics Corporation Characteristics subject to change without notice microcontroller can operate the light curtain. The address allocation, meaning the allocation epc120 microcontroller . In order to operate the light Datasheet epc12x - V2.1 www.espros.ch ...
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... Characteristics subject to change without notice PROG Register Figure 21: Direct programming procedure Device Address PROG Figure 22: Broadcast programming procedure (7.5V) and has to be kept stable buffered during the whole prog 23 400μs 7.5V 5V 400μ Register Datasheet epc12x - V2.1 epc120 7.5V 5V www.espros.ch ...
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... Considerations for Safety Applications Since the epc120-family chips can be used in safety related products, like machine safety light products, certain data integrity mechanisms have been integrated. The safety concept on chip and communication level are described in this chapter. Data Integrity on the 2-Wire Power-Bus Several mechanisms on different layers are implemented to guarantee a low residual error rate on the 2-wire power-bus ...
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... DIN A4 Page 1 Part Name Part No. <Partname> <x000 000> File: Unbenannt Pin 1 Solder balls Sn97.5Ag2.5 Figure 25: QFN-16: Mechanical dimensions 25 0.1524 ∅ 0.3 0.5 0.5 2.5 no solder mask inside this area Figure 24: CSP10: Layout recommendation Bottom View <name> . 0.25 LST . Datasheet epc12x - V2.1 epc120 19.01.2012 Page 1 0.3 15.08.2010 Page 1 www.espros.ch ...
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... QFN16 Tape Pin 1 ) should not exceed +260°C for a maximum of 4 sec QFN16 Tape Pin 1 4 Figure 26: CSP10 and QFN16 Tape Dimensions Package RoHS compliance CSP10 Yes QFN16 Yes 26 epc120 Pin 1 8 Pin 1 8 Packaging Method Reel Reel Datasheet epc12x - V2.1 www.espros.ch ...
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... ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any non-designated products in automotive applications, epc will not be responsible for any failure to meet such requirements. © 2011 ESPROS Photonics Corporation Characteristics subject to change without notice 27 epc120 Datasheet epc12x - V2.1 www.espros.ch ...