S9418P データシートの表示（PDF） - Summit Microelectronics

部品番号

コンポーネント説明

メーカー

S9418P

Quad 8-Bit Nonvolatile DACPOT™ Electronic Potentiometer With a Mute Control Input

Summit Microelectronics 

S9418

RECALL COMMAND

The recall command will retrieve data from the selected

nonvolatile register and write it into the data register of the

associated DAC. This operation is initiated by taking CS#

low and clocking in a start bit followed by the recall

command and the address of the nonvolatile register to be

recalled. The eight bits of data are don’t care, so CS# can

be taken high any time after the address bits are clocked

in. Refer to Figure 4 for an illustration of the sequence of

bus conditions for a Recall operation.

Power-On Recall

Whenever the S9418 is powered on, the VOUT values will

be returned to the analog equivalent of the data byte stored

in the nonvolatile register.

MUTE Operation

The MUTE input is active high. Whenever the input is low

the VOUT will reflect the value in the data register. If MUTE

is driven high the VOUT outputs will be switched to VREFL.

Releasing the MUTE input returns the VOUT outputs to the

analog equivalent of the data register contents.

CS#

CLK

DI

VOUT

S

T

C1 C0 A1 A0

A

R

T

2023 T fig04 2.0

FIGURE 4. RECALL COMMAND SEQUENCE

2023 2.2 8/2/00

5

Share Link: