The pin count of 52840-CKAA

[Hsu]

Hi Sir,

As check the ref. schematic of CKAA, the pin count shows 94.

But in the below table shows the pin count is 93

Is there a typo in the datasheet (V1.1)?

Thank you.

BRs, Han

[Simonr]

Hi

This is because the 94th "pin" is the ground plane that is under the chip. The reason it isn't added in the ball count is that it isn't a ball per se, and is not configurable.

Best regards,

Simon

[Hsu]

Hi Simon

We tried to count the number of the balls at "Figure 207: WLCSP ball assignments, top view" and we got balls count is 94.

And we tried to count the "Table 143: WLCSP ball assignments, we got ball count is 94 also.

Does the 94th "pin" list in the "Table 143"?

Thank you.

BRs, Han