EPC100 EPC [Espros Photonics corp], EPC100 Datasheet

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EPC100

Manufacturer Part Number
EPC100
Description
Light-Curtain Device with 2-Wire Bus Interface
Manufacturer
EPC [Espros Photonics corp]
Datasheet
1.EPC100.pdf (9 pages)
General Description
The epc10x chip set is a general purpose CMOS integrated circuit
for light-curtain applications. epc100 is used on the receiver side
(Rx) whereas epc 101 is on the emitter side (Tx). Up to 1023
devices may be connected to two respectively four wires in paral-
lel. Each device can be individually addressed by an epc100 chip
which acts as the interface between a microcontroller and the 2-
wire bus. It manages the bus traffic between the microcontroller
and the individual Rx and Tx elements. Programmable fuses i.e.
for the address, sensitivity, LED light pulse width, etc. allow the
device to be parametrized in the final system (OTP memory).
Each chip can be put into 'standby mode' or 'operating mode' to re-
duce power consumption. During 'standby mode', power consump-
tion is reduced and the photo diode is shorted.
Refer to the separate Data Sheet of the epc101 transmitter chip
and to the Reference Manual epc10x for implementation, usage
and configuration information.
Functional Block Diagram
© 2011 ESPROS Photonics Corporation
Characteristics subject to change without notice
VDD33
VDD18
VDD
GND
Light-Curtain Device with 2-Wire Bus Interface
CS
2-wire COM
2-wire COM
Processor
Controller
Interface
Interface
SPI
SI
Feature
 Light pulse receiver
 Bus transceiver
 Advantageous wiring by communication over the power-supply lines
 High sensitive input for photo-diode current signals, typ. 60nA
 Scan period down to 30 µs
 integrated clock generator
 CSP10 package with very small footprint and standard QFN16 pack -
Applications
 Light barriers ranging from millimeters to tens of meters
 Light curtains
 Smoke detectors
 Liquid detectors
1
age available
SO
Processor
Signal
SC
Parameter
Memory
f
Datasheet epc100 - V2.1
PD
www.espros.ch
epc100
D1

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EPC100 Summary of contents

Page 1

... Up to 1023 devices may be connected to two respectively four wires in paral- lel. Each device can be individually addressed by an epc100 chip which acts as the interface between a microcontroller and the 2- wire bus. It manages the bus traffic between the microcontroller and the individual Rx and Tx elements ...

Page 2

... DD 3.0 DD33 ) -40° Values Min. Typ. PD NST 36nA 48nA 72nA 108nA 50 6.4 8 un- Relax 2.4 0 GND 0 0.5 DD 0.7 0.1 30 Datasheet epc100 - V2.1 www.espros.ch epc100 Max. Units 5.5 V 8.0 V 3.6 V +85 °C +95 % Units Max 150 mV 350 mV 600 mV 1.4 mA 2.0 mA 200 mV 9 108 nA nA 100 µ ...

Page 3

... File: Unbenannt 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 3 epc100 Top View 16-Pin QFN Package , a DDR 28.01.2010 LST Page 1 Datasheet epc100 - V2.1 www.espros.ch . ...

Page 4

... ESPROS Photonics Corporation Characteristics subject to change without notice Pulse width [us] Figure 1: Input Sensitivity vs. LED pulse length Threshold OUTH OUTN OUTN OUTH Figure 2: OUTN and OUTH threshold operation Figure 3: Typical light curtain receiver edge circuit Datasheet epc100 - V2.1 www.espros.ch epc100 ...

Page 5

... CS GND GND The epc100 device can be operated in two different modes: a) Photo Current Receivers It detects current pulses of the photo diode generated by light pulses and transmits the information using the 2-wire bus to a central con - troller, i.e. a micro controller. The devices operating as this photo current receivers are designated in the schematic diagram above ...

Page 6

... The pins at the bottom are to solder the shield to the PCB with electrical connection to GND. The hole in the front is the opening window for the photo diode. The back side of the PCB below the sensitive area (PD, epc100) shall be a polygon connected to GND to shield the circuit from the back side. The capacitors shall be of high mechanical stability (no piezoelectric effect) in order to avoid unwanted voltage modulation by mechanical shock or vibration ...

Page 7

... Approved <Name> <Data> Scale M 1:1 DIN A4 Page 1 Part Name Part No. <Partname> <x000 000> File: Unbenannt Pin 1 Solder balls Sn97.5Ag2.5 7 Layout Recommendations 0.1524 ∅ 0.3 0.5 0.5 2.5 no solder mask inside this area Bottom View <name> . 0.25 LST . Datasheet epc100 - V2.1 epc100 20.12.2011 Page 1 0.3 18.05.2011 Page 1 www.espros.ch ...

Page 8

... Package RoHS compliance CSP10 Yes QFN16 Yes CSP10 Yes QFN16 Yes 8 Pin 1 ) should not exceed +260°C for a maximum of 4 sec. 8 Pin 1 8 Packaging Method Reel Reel Reel Reel Datasheet epc100 - V2.1 epc100 www.espros.ch ...

Page 9

... 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 9 epc100 Datasheet epc100 - V2.1 www.espros.ch ...

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