Hi I am an electrical-electronics enginerring student and I am currently trying to design a 15W wireless power transportation solution using P9242-R chip. I followed the datasheet to draw the schematic of most of the circuit. But I came accross some parts that I don't really understand how it works and whether if I should put it in my design or not.
The pins 25-29 are reserved and it is advised not to connect them in "Table 1. Pin Descriptions" in 6th page. But they are connected to a NOR Flash component. The capacitance and resistance values are not given too.
1) As I understand, there are mainly three versions of this IC: P9242-RNDGI8, P9242-R3NDGI8 and P9242-RBNDGI8. P9242-R3NDGI8 comes with application firmware and P9242-RBNDGI8 doesn't. But what about P9242-RNDGI8? Because it is the only version that I found avaliable to order.
2) As I understand, the flash component is required for only the versions without the application firmware. If P9242-RNDGI8 comes without the firmware how can it be programmed, using which tools and are there any guides for that?
3) About the EN' which is the first pin, should I just connect it to the ground to keep the IC running all the time or is it needs to be connected to another controller chip? Whith its object detection capabilities I think it wouldn't cause much inefficiency to connect this pin directly to the ground but I am not sure.
4) To set the LED pattern and Enabling/Disabling the Q-factor Detection for FOD the resistor values are given in a table (Table 9. page 18). I don't really understand "LED/Q-Fact Pin Voltage" What should I consider while choosing an option and what does it mean to have pull-up and pull-down voltages in there? The same thing goes for the information given in Table 6. in page 15 I don't know which treshold value to choose.
5) What is the programming connector is for if the chip comes with its own application firmware and if it doesn't do I need to use these ports to program it?
6) Lastly, are there any possible ways to simulate the chip before buying it?
Thank you for your attention.
Thanks to the Digikey customer service my questions are answered. Here I am pasting the contents of the mail I received so anyone having the same questions can benefit from them.
Have you checked this document already? https://www.renesas.com/us/en/document/mah/p9242-r-evk-evaluation-board-user-manual?language=en&r=194646
I think the chip comes with its firmware already and is programmable through designated pins (for different functions). These pins are programmed with resistor networks and voltage levels described from the datasheet. I suggest you check out the link above and see the reference schematic and description of operations, i think it will answer most of your questions.
HeraldRenesasRulz Forum Moderatorhttps://renesasrulz.com/https://academy.renesas.com/en-us.knowledgebase.renesas.com/
Thank you for answering. I have checked that document you suggested and found out the answer for a part of the question 4. So in that document it is written that option 7 is choosed to be default. Apart from that, I couldn't find answers for the rest of my questions. The version of the chip used in the evaluation board is not given in the user manual document but I found out that the U2 component used in the evaluation board is the NOR flash that I wasn't sure about. So again, as I understand, I may be wrong but, the need of using a flash memory indicates that the model of the chip used in this evaluation board is one that comes without the application software. Again, I am not sure whether the stocked version (P9242-RNDGI8) needs a flash memory or programming and if it does need, exactly how I can do that.
Please take a look at the attached guidelines. The schematic on page 16 should be helpful.
To answer the customer questions:
Product Specialist - Semiconductors