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Hi,
The PSoC 4XX7_BLE state that Max ESR allowed is 60 Ohm.
In my design I am using the lower spec models like CY8C4127LQI-BL473, which only runs at 24MHz, as opposed to the faster ones in the family that run at 48MHz.
But the spec (Document Number: 001-90479 Rev. *N) has one ESR number for both and it is the same number 60 Ohm.
I was wondering - In the context of cost reduction for my product - can I use a lower spec crystal with max 100 Ohm ESR for the CY8C4127LQI-BL473 ?
I am working in the Chinese consumer electronics market and the higher quality crystals are more expensive.
Please advise,
Shachar
Solved! Go to Solution.
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Hi Shachar,
The BLESS sub-system hardware runs over a maximum of 24 MHz in all the PSOC 4 BLE family devices and the maximum ESR requirement for the 24-MHz crystal to be used with PSoC 4 BLE devices is 60 Ω at 24-MHz. We do not recommend to use a max 100 Ohm ESR.
-Gyan
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Hi Shachar,
The BLESS sub-system hardware runs over a maximum of 24 MHz in all the PSOC 4 BLE family devices and the maximum ESR requirement for the 24-MHz crystal to be used with PSoC 4 BLE devices is 60 Ω at 24-MHz. We do not recommend to use a max 100 Ohm ESR.
-Gyan