MAX5395 查看數據表（PDF） - Maxim Integrated

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MAX5395

Single, 256-Tap Volatile, I2C, Low-Voltage Linear Taper Digital Potentiometer

Maxim Integrated 

MAX5395

Single, 256-Tap Volatile, I2C, Low-Voltage Linear

Taper Digital Potentiometer

SD_L_WREG Command

Opens the L terminal and maintains the wiper at the

wiper register location. Writes cannot be made to the

wiper register while shutdown mode is engaged. Clearing

shutdown mode will close the L terminal and allow wiper

register to be written. A RST will also deassert shutdown

mode and return the wiper to midscale (0x80). This

command does not affect the charge-pump status.

SD_L_ZERO Command

Moves wiper to zero-scale position (0x00) and opens the

L terminal. The wiper register remains unaltered. Writes

cannot be made to the wiper register while shutdown

mode is engaged. Clearing shutdown mode will return the

wiper to the position contained in the wiper register and

close the L terminal. A RST will also deassert shutdown

mode and return the wiper to midscale (0x80). This

command does not affect the charge-pump status.

SD_L_MID Command

Moves wiper to midscale position (0x80) and opens the

L terminal. The wiper register remains unaltered. Writes

cannot be made to the wiper register while shutdown

mode is engaged. Clearing shutdown mode will return the

wiper to the position contained in the wiper register and

close the L terminal. A RST will also deassert shutdown

mode and return the wiper to midscale (0x80). This

command does not affect the charge-pump status.

SD_L_FULL Command

Moves wiper to full-scale position (0xFF) and opens the

L terminal. The wiper register remains unaltered. Writes

cannot be made to the wiper register while shutdown

mode is engaged. Clearing shutdown mode will return the

wiper to the position contained in the wiper register and

close the L terminal. A RST will also deassert shutdown

mode and return the wiper to midscale (0x80). This

command does not affect the charge-pump status.

SD_W Command

Opens the W terminal keeping the internal tap position

the same as the wiper register. Writes cannot be made

to the wiper registers while shutdown mode is engaged.

Clearing shutdown mode will return the wiper to the

position contained in the wiper register and close W

terminal. A RST will also deassert shutdown mode and

return the wiper to midscale (0x80). This command does

not affect the charge-pump status.

QP_OFF Command

Disables the onboard charge pump and places device in

low power mode. Low supply voltage is limited to 2.6V.

QP_ON Command

Enables the onboard charge pump to allow low-supply

voltage operation. This is the power-on default condition.

Low supply voltage is 1.7V.

RST Command

Returns the device to power-on default conditions. Resets

the wiper register to midscale (0x80), enables charge

pump, and deasserts any shutdown modes.

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