The LP5814I supports
shutdown mode to minimize the power consumption from VCC. The quiescent current from
VCC decreases to 0.1μA (typical) in SHUTDOWN mode. The LP5814I provides two pairs of methods to control the device enter and exit
SHUTDOWN mode.
- Figure 7-13 shows the method 1
- Enter
shutdown, send Shutdown_command by writing 0x33 to register 0xD
though I2C communication.
- Exit shutdown,
toggle SDA 8 times to generate 8 falling edges while keeping SCL as
high. The supported maximum toggle frequency for SDA is 100kHz.
- Figure 1-1 shows the method 2
- Enter
shutdown, pull down SCL for 100ms while keeping SDA as
high.
- Exit shutdown,
pull up SCL to generate one rising edge regardless of SDA
state.