Table of Contents
General Description............................................................................................................................................................................................1
Features............................................................................................................................................................................................................. 1
Possible Applications......................................................................................................................................................................................... 1
Functional Block Diagram.................................................................................................................................................................................. 1
Absolute Maximum Ratings (Note 1, 2) ............................................................................................................................................................ 3
Operating Ratings.............................................................................................................................................................................................. 3
Electrical Characteristics....................................................................................................................................................................................3
Timing and optical Characteristics..................................................................................................................................................................... 4
Other Parameters...............................................................................................................................................................................................5
Pin Configuration................................................................................................................................................................................................6
Layout information..............................................................................................................................................................................................7
CSP-24 Package (all measures in mm, ).................................................................................................................................................... 7
Design precautions...................................................................................................................................................................................... 7
ESD protection.............................................................................................................................................................................................7
Reflow Solder Profile..........................................................................................................................................................................................8
Packaging Information (all measures in mm).....................................................................................................................................................8
Ordering information...........................................................................................................................................................................................8
Functional Description........................................................................................................................................................................................9
1. Operation.................................................................................................................................................................................................. 9
1.1. Introduction............................................................................................................................................................................................ 9
1.2. General overview...................................................................................................................................................................................9
1.3. Operational mode................................................................................................................................................................................ 10
1.3.1. Distance measurement.....................................................................................................................................................................10
1.3.2. System sensitivity, integration time and operating range ................................................................................................................. 11
1.3.3. Ambient-light suppression................................................................................................................................................................ 12
1.3.4. Quality of the measurement result....................................................................................................................................................12
1.3.5. Ambient-light measurement (optical power-meter).......................................................................................................................... 14
1.3.6. Temperature metering.......................................................................................................................................................................14
1.3.7. Measurement sequence................................................................................................................................................................... 15
1.3.8. Calibration and compensations........................................................................................................................................................ 16
1.3.9. Extended operating range................................................................................................................................................................ 16
1.3.10. Multi range-finder application......................................................................................................................................................... 16
2. Hardware Design.................................................................................................................................................................................... 17
2.1. What performance can be achieved?..................................................................................................................................................17
2.2. General Hardware Configuration.........................................................................................................................................................18
2.3. Power Supply, Clock generation..........................................................................................................................................................18
2.4. On-chip LED driver.............................................................................................................................................................................. 19
LEDs with a +5V supply.............................................................................................................................................................................19
Short range application design (LED supply from +8.5V) ......................................................................................................................... 19
Mid range application design (LED supply from +8.5V)............................................................................................................................ 20
2.5. External LED driver..............................................................................................................................................................................20
3. Instruction Set......................................................................................................................................................................................... 21
3.1. 2-wire serial interface...........................................................................................................................................................................21
3.1.1. SCLK line.......................................................................................................................................................................................... 21
3.1.2. SDATA line........................................................................................................................................................................................ 21
3.2. Commands & responses..................................................................................................................................................................... 23
3.2.1. Command: Commands & Integration times..................................................................................................................................... 23
3.2.2. Response: Distance..........................................................................................................................................................................24
3.2.3. Response: Valid & saturated pixels .................................................................................................................................................. 24
3.2.4. Response: Q-subsample QSx.......................................................................................................................................................... 24
3.2.5. Response: Ambient-light level.......................................................................................................................................................... 25
3.2.6. Response: Temperature................................................................................................................................................................... 25
3.3. Communication tasks.......................................................................................................................................................................... 26
3.3.1. Measurement sequence (Distance or ambient-light)....................................................................................................................... 26
3.3.2. Read sequence (Valid & saturated pixels, Q-subsample QSx, Temperature) ................................................................................. 26
3.3.3. Error detection by the microprocessor............................................................................................................................................. 26
3.3.4. Reset and recovery sequence sequence ......................................................................................................................................... 27
3.3.5. Error detection by the epc600 chip...................................................................................................................................................27
3.3.6. Cycle times & response time............................................................................................................................................................ 28
Integration time.......................................................................................................................................................................................... 28
Measurement time..................................................................................................................................................................................... 28
Communication time.................................................................................................................................................................................. 28
Data processing time................................................................................................................................................................................. 28
Measurement cycle time............................................................................................................................................................................28
Response time........................................................................................................................................................................................... 28
LED on-time and LED duty cycle...............................................................................................................................................................28
4. Optical Design Considerations............................................................................................................................................................... 29
Photosensitive area................................................................................................................................................................................... 29
Signal sensitivity........................................................................................................................................................................................ 29
Ambient-light suppression..........................................................................................................................................................................29
Operating range......................................................................................................................................................................................... 29
IMPORTANT NOTICE......................................................................................................................................................................................30
© 2014 ESPROS Photonics Corporation
Characteristics subject to change without notice
2 / 30 Datasheet epc600 - V1.3
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