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MAX1968 SHDN Pin is on 5V Voltage Level but it is controlled with 3V3 Voltage Level #43

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opened 2024-04-23 12:36:35 +08:00 by linuswck · 0 comments
linuswck commented 2024-04-23 12:36:35 +08:00
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It functionally works so far without any problem on Kirdy rev0_3 and older version of Thermostat(2.2.1) (fixed in 2.2.2).
https://github.com/sinara-hw/Thermostat/issues/112

The MAX1968 specification says the following.
image

Logic High Threshold = 5V x 0.75 = 3.75V

We should add a voltage translator for that.

It functionally works so far without any problem on Kirdy rev0_3 and older version of Thermostat(2.2.1) (fixed in 2.2.2). https://github.com/sinara-hw/Thermostat/issues/112 The MAX1968 specification says the following. ![image](/attachments/d99a07c0-9935-441a-9ac7-574c266ba791) Logic High Threshold = 5V x 0.75 = 3.75V We should add a voltage translator for that.
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Reference: sinara-hw/kirdy#43
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