Hello,
According to this document, it stated that:
http://cache.freescale.com/files/microcontrollers/doc/ref_manual/KL36P121M48SF4RM.pdf
VIREG maximum should never be externally driven to any level other than VDD - 0.15 V
Does this mean, we can select the VIREG other than the 1.0V as mentioned in the datasheet?
Customer try to use KL36 to drive a 5V LCD segment display and she is trying to use internal charge pump features.
Please help on this.
Thanks.
Hello Hui_Ma,
Thanks a lot.
Some how, the KL36 technical manual might need to revised. And also I found out the diagram in the KL36 reference manual is confusing also:
It stated the VDD is specified between 2.7V to 5.5V which should be revised if KL36 series is not able to drive a 5V LCD segment display.
I do check the K30 technical manual and it is clear on how we can set the VLL1, VLL2 and VLL3 voltage to drive a 5V LCD segment display here:
http://cache.freescale.com/files/32bit/doc/ref_manual/K30P81M100SF2V2RM.pdf
Thanks.
Hi Allen,
Yes, you are right. The Figure 42-43 in KL36 reference manual with incorrect info.
I will let document team know and figure it out.
Thank you for the notification.
Best regards,
Ma Hui
Hello Ma Hui,
Thanks a lot for the clarification.
The KL36 data sheet and technical reference manual need to state clearly that it cannot be used to drive 5V LCD segment display which is a bit confusing to the customer.
Thanks for your fast response regarding this and I appreciate your help in this.
Regards,
Allen
Hi Allen,
KL36 SLCD module could not support 5V LCD segment display.
Customer can consider to use K30_72MHz product as a replacement.
More detailed info, please check below link:
K30_72 |Kinetis K30 72 MHz MCUs|Freescale
Have a great day,
best regards,
Ma Hui
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