BQ34110EVM-796: BQ34110EVM-796 Voltage calibration error
Part Number: BQ34110EVM-796
just now I find out a problem that the BQ34110-EVM796 can't write the bq34110 dataflash correctly.
I write the BQ34110 the Number of the Series cell dataflash,the write operation step:
Change the Number of the Series cell to 0x08 and the BQ34110 default is 0x01Use the Advanced Comm section to write the data flash.Start Register 3E, Bytes to Write 55 41 (data flash address)Start Register 40, Byte to Write 08 (new data)Start Register 60, Byte to Write 61 (checksum)Start Register 61, Byte to Write 05 (length of data written)
after this operation and I want to read the Number of the Series cell dataflash but the value is still 0x01
now I don't know how to resolve this question?
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In reply to Matt Sunna:
I measure the voltage of VEN , the voltage between the VEN and pack- is about 0.3V when I connect the 10V battery to the BQ34110EVM ,and when I shorten the LOAD jumper and I am aware of the board around the R21 is very hot so I think the BQ34110EVM is bad . I think of a thing that I have misconnected the J2 jumper.the detail connection is below:
I connected the J2 jumper as the red circle but when I found out the misconnection ,I cut off the battery quickly
when I disconnnect the LOAD jumper I connect the BQ34110EVM by EV2400 ,I find out the Flash Update Okay Voltage is 2800mv,now I measure the voltage is 0.3v,this is the reason why I can't wirte the BQ34110 flash successfully,I want to know if there are devices damaged when I misconnected the J2 disconnection.
In reply to darren:
The EVM may still be okay. Correct the J2 jumper setting so that the correct voltage is going into the VBAT pin. Then carefully follow the steps from Section 3.2.1 of the EVM User Guide (see below). If R21 is getting hot, it is due to the LEN pin driving the learning load. You can remove the J10 jumper if you are not using that feature right now - it is for the End-of-Service special feature.
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