I2C SPeeD
Register Address
Register Name
Function
Read/Write Control
0x18
I2CSPD
I2C speed setting
Read/Write
Register Size
Register structure
Unit
1 Byte
Unsigned Int 8 bits
none
Description:
I2C speed setting between ~39kHz and 400kHz.
The value of this parameter must be computed with the following formula
based on the wanted speed:
1
2
10
2
7
−
=
wanted
CSpeed
I
CSPD
I
Note:
Speeds greater than 100kHz have some limitations (see page 20).
Do not use a speed greater than 400kHz (<24). Greater speed will not
work.
This register cannot be saved to EEPROM and must be configured at each
power-up.
Default value:
99 (100kHz)
Examples:
Most common speeds:
100kHz : I2CSPD = 99
400kHz : I2CSPD = 24