IIC Calculator for S912ZVLA

Boris_Bloxsberg — Mon, 21 Jul 2025 11:13:00 GMT

Hi,

is there IIC calculator avaible to calculate the value of the IIC0IBFD - Register?

Could someone provide link or somethink else....

Re: IIC Calculator for S912ZVLA

lama — Tue, 22 Jul 2025 17:45:39 GMT

Hi,

There is no such calculator and I do not think such calculator is necessary.

f_iic = fbus / SCL Divider

SCL Divider = fbus / f_iic

For example;

fbus = 32,000,000 Hz

f_iic = 100,000 Hz

SCL Divider = 32,000,000 / 100,000 = 320

Now, go to the Table 16-7. IIC Divider and Hold Values and search for 320 in the SCL Divider column.

There are more results for different IBFD[7:6], MUL in the table. The difference is then in SDA hold clocks.

Final value for clock setup is IBFD = IBC[7:0] = code from the first column of the table.

Best regards,

Ladislav

Boris_Bloxsberg — Fri, 25 Jul 2025 08:18:26 GMT

thx