MAX517 Maxim, MAX517 Datasheet - Page 10

• Manufacturer Part Number: MAX517
• Description: 2-Wire Serial 8-Bit DACs with Rail-to-Rail Outputs
• Manufacturer: Maxim

2-Wire Serial 8-Bit DACs with
Rail-to-Rail Outputs
Figure 8a. Setting One DAC Output (MAX517/MAX518/MAX519)
Figure 8b. Setting Both DAC Outputs (MAX518/MAX519)
Figure 9. Entering the Power-Down State
10
______________________________________________________________________________________
SDA
SDA
(a)
(b)
SDA
CONDITION
CONDITION
SDA
START
START
START
CONDITION
SDA
NOTE: X = DON'T CARE
0
START
CONDITION
1
1
0
0
ADDRESS BYTE
0
0
1
1
1
AD3
or
1
ADDRESS BYTE
ADDRESS BYTE
1
OUTPUT BYTE
(FULL SCALE)
1
0
0
ADDRESS BYTE
AD3
AD3
AD2 AD1 AD0 0
0
or
or
or
1
1
1
(
1
AD3
DAC1 INPUT LATCH
SET TO FULL SCALE
or
1
AD2 AD1 AD0 0
AD2 AD1AD0 0 0
or
or
1
1
1
AD2AD1 AD0 0
or
1
1
1 1
ACK
0
ACK
ACK
ACK
0
0
0
)
(
ACK
STOP
CONDITION
0
DAC OUTPUTS CHANGE HERE:
DAC0 AND DAC1 GO TO FULL SCALE.
0
0
0 0 0 0 1
(ADDRESSING DAC0)
COMMAND BYTE
0
0
0
(ADDRESSING DAC0)
COMMAND BYTE
COMMAND BYTE
0
0
(ADDRESSING DAC0)
0
COMMAND BYTE
0
0
0
(PD)
(PD)
0
1
0 0 0
0
X X X
X X
0 0 0
ACK
0
0
CONDITION
ACK
ACK
0
1
0
ACK
STOP
0
1
)
1
1
OUTPUT BYTE
(FULL SCALE)
1
1
1
(
1
OUTPUT BYTE
1
(FULL SCALE)
DEVICE ENTERS
POWER-DOWN STATE
1
OUTPUT BYTE
(FULL SCALE)
1
(
1
SET TO FULL SCALE.
DAC0 INPUT LATCH
(
1
1
1
DAC0 INPUT LATCH
SET TO FULL SCALE
(
1
DAC0 INPUT LATCH
SET TO FULL SCALE
1
1
1
1
1
ACK
1
0
1
)
ACK
1
0
0
)
ACK
(
0
0
DEVICE ENTERS POWER-DOWN STATE.
DAC0 OUTPUT LATCH SET TO FULL SCALE.
STOP
CONDITION
)
(ADDRESSING DAC1)
(
STOP
CONDITION
DAC OUTPUT CHANGES HERE:
DAC0 GOES TO FULL SCALE.
COMMAND BYTE
0
)
0
0 0
0
1
ACK
0
)
)