max5253aepp Maxim Integrated Products, Inc., max5253aepp Datasheet - Page 11

• Manufacturer Part Number: max5253aepp
• Description: Max5253 +3v, Quad, 12-bit Voltage-output Dac With Serial Interface
• Manufacturer: Maxim Integrated Products, Inc.

Figure 5. Serial-Interface Timing Diagram
Figure 6. Detailed Serial-Interface Timing Diagram
The power-down lockout pin PDL disables software
shutdown when low. When in shutdown, transitioning
PDL from high to low wakes up the part with the output
set to the state prior to shutdown. PDL could also be
used to asynchronously wake up the device.
Any number of MAX5253s can be daisy chained by
connecting the DOUT pin of one device to the DIN pin
of the following device in the chain (Figure 7).
DOUT
SCLK
DIN
CS
(MODE 0)
(MODE 1)
DOUT
SCLK
DOUT
DIN
CS
t
CSO
______________________________________________________________________________________
A1
A1
A1
Power-Down Lockout ( PDL )
1
t
MSB FROM
PREVIOUS WRITE
A0
MSB FROM
PREVIOUS WRITE
CSS
+3V, Quad, 12-Bit Voltage-Output DAC
Daisy-Chaining Devices
t
DS
A0
A0
t
C1
DH
C1
C1
C0 D11 D10 D9
C0
C0
D11 D10 D9
D11 D10 D9
t
CL
DATA PACKET (N-1)
DATA PACKET (N-1)
t
DATA PACKET (N)
CH
D8
D8
D8
8
D7
D7
D7
9
D6
D6
D6
Since the MAX5253’s DOUT pin has an internal active
pull-up, the DOUT sink/source capability determines
the time required to discharge/charge a capacitive
load. Refer to the serial-data-out V
cations in the Electrical Characteristics.
Figure 8 shows an alternate method of connecting sev-
eral MAX5253s. In this configuration, the data bus is
common to all devices; data is not shifted through a
daisy chain. More I/O lines are required in this configu-
ration because a dedicated chip-select input (CS) is
required for each IC.
D5
D5
D5
D4
with Serial Interface
t
DO1
D4
D4
D3
t
D3
D3
CP
t
DO2
D2
D2
D2
D1
D1
D1
D0
D0
D0
16
t
CSH
A1
A1
DATA PACKET (N)
DATA PACKET (N)
COMMAND
EXECUTED
t
CS1
OH
t
CSW
and V
OL
specifi-
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