PCA9561 Description
The PCA9561 is a 20-pin CMOS device consisting of four 6-bit non-volatile EEPROM registers, six hardware pin inputs and a 6-bit multiplexed output. It is used for DIP switch-free or jumper-less system configuration and supports Mobile and Desktop VID Configuration, where five preset values (four sets of internal non-volatile registers and one set of external hardware pins) set processor voltage for operation in...
PCA9561 Key Features
- Selection of non-volatile register_n as source to MUX_OUT pins via I2C-bus
- I2C-bus can override MUX_SELECT pin in selecting output source
- 6-bit 5-to-1 multiplexer DIP switch
- Four internal non-volatile registers
- Internal non-volatile registers programmable and readable via I2C-bus
- Six open-drain multiplexed outputs
- 400 kHz maximum clock frequency
- Operating supply voltage 3.0 V to 3.6 V
- 5 V and 2.5 V tolerant inputs/outputs
- Useful for Speed Step configuration of laptop puter
PCA9561 Applications
- Selection of non-volatile register_n as source to MUX_OUT pins via I2C-bus
- I2C-bus can override MUX_SELECT pin in selecting output source
- 6-bit 5-to-1 multiplexer DIP switch