I'm using a PIC12F1840 chip with an MPU9250 accelerometer to collect movement data. I'm currently using a 1Kb, SPI RAM chip, but it gets full quite quickly, and there is also data loss while trying to read the data from it (due to the RAM's need for continuous power!).
It doesn't have to be quick, the MPU's fastest speed is the only 184Hz, and I'm planning to use it on a slower setting by default. Can someone suggest some type of memory?
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Mike
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Samu Nemeth
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If you don't have continuous power you need a EEPROM and not a RAM to hold your data. – Mike Dec 03 '20 at 05:43
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Well, in ideal circumstances the power outage is only a fraction of a second! – Samu Nemeth Dec 03 '20 at 16:49
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You can try SPI F-RAM like: FM25CL64B-G – GJ. Dec 03 '20 at 20:58
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A `fraction of a second`is more than enough to lose data in a RAM! – Mike Dec 04 '20 at 05:43
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Are you trying to make some kind of offline data logger with non-volatile memory? Like recording accelerometer values for maybe 1 day, then retrieve them back from a PC? – Tagli Dec 16 '20 at 08:41
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yes, but only recording for 10-20 minutes – Samu Nemeth Dec 18 '20 at 15:18