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sinara-hw / Thermostat_EEM

Thermostat with 4 TEC and 8 sensor channels in EEM form factor
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I2C isolation #19

Closed jordens closed 3 years ago

jordens commented 3 years ago

Let's use CPU_RESETn to drive those FETs. It's later than P5V0 and later than P3V3

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jordens commented 3 years ago

I'd also place the LM75 on the EEM side of the I2C bus (I2C_SDA/SCL instead of I2C4_SDA/SCL) and power it from P3V3_MP.

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jordens commented 3 years ago

And we need 10k pullups to P3V3_MP on the EEM side of the I2C bus (I2C_SDA/SCL).

gkasprow commented 3 years ago

I'd use P5V0A which wakes up as the last one after P3V3. It will result with lower Rdson.

gkasprow commented 3 years ago

obraz