FRAM71B

[Hans Brueggemann]

(01-24-2017 06:15 PM)Erwin Wrote:  Is it necessary to keep the J2-4 in the ON position cause the LED is shining also in the POWER OFF state of the calculator.

if you are going to use SYSRAM area as ROM, then you have CN2-4 set while you are "filling" that area with images. once the images are loaded there, jumper CN2-4 can (and should) be removed to conserve battery power. leaving CN2-4 on all the time will increase "OFF"-current to 0.5 mA and "eat" a fresh set of batteries in about 4000 hrs (or about 1500 hrs when using Panasonic eneloops).