Datasheet

MAX5813/MAX5814/MAX5815
Ultra-Small, Quad-Channel, 8-/10-/12-Bit Buffered
Output DACs with Internal Reference and I
2
C Interface
16Maxim Integrated
to the MAX5813/MAX5814/MAX5815. The master termi-
nates transmission and frees the bus, by issuing a STOP
condition. The bus remains active if a Repeated START
condition is generated instead of a STOP condition.
I
2
C Early STOP and
Repeated START Conditions
The MAX5813/MAX5814/MAX5815 recognize a STOP
condition at any point during data transmission except
if the STOP condition occurs in the same high pulse as
a START condition. Transmissions ending in an early
STOP condition will not impact the internal device set-
tings. If the STOP occurs during a readback byte, the
transmission is terminated and a later read mode request
will begin transfer of the requested register data from
the beginning (this applies to combined format I
2
C read
mode transfers only, interface verification mode transfers
will be corrupted). See Figure 2.
I
2
C Slave Address
The slave address is defined as the seven most sig-
nificant bits (MSBs) followed by the R/W bit. See
Figure 4. For the TSSOP packages, the three most signifi-
cant bits are 001 with the 4 LSBs determined by ADDR1
and ADDR0 as shown in Table 1. For the WLP package,
the five most significant bits are 00011 with the 2 LSBs
determined by ADDR0 as shown in Table 2. Setting
the R/W bit to 1 configures the MAX5813/MAX5814/
MAX5815 for read mode. Setting the R/W bit to 0 config-
ures the MAX5813/MAX5814/MAX5815 for write mode.
The slave address is the first byte of information sent
to the MAX5813/MAX5814/MAX5815 after the START
condition.
The MAX5813/MAX5814/MAX5815 have the ability to
detect an unconnected state on the ADDR input for
additional address flexibility; if leaving the ADDR input
unconnected, be certain to minimize all loading on the
pin (i.e. provide a landing for the pin, but do not allow
any board traces).
I
2
C Broadcast Address
A broadcast address is provided for the purpose of
updating or configuring all MAX5813/MAX5814/MAX5815
devices on a given I
2
C bus. All MAX5813/MAX5814/
MAX5815 devices acknowledge and respond to the
broadcast device address 00010000. The devices will
respond to the broadcast address, regardless of the
state of the address pins. The broadcast mode is intend-
ed for use in write mode only (as indicated by R/W = 0 in
the address given).
Figure 3. I
2
C Acknowledge
Table 1. I
2
C Slave Address LSBs for
TSSOP Package
Table 2. I
2
C Slave Address LSBs for WLP
Package
TSSOP PACKAGE (A[6:4] = 001)
ADDR1 ADDR0 A3 A2 A1 A0
V
DDIO
V
DDIO
0 0 0 0
V
DDIO
N.C. 0 0 1 0
V
DDIO
GND 0 0 1 1
N.C. V
DDIO
1 0 0 0
N.C. N.C. 1 0 1 0
N.C. GND 1 0 1 1
GND V
DDIO
1 1 0 0
GND N.C. 1 1 1 0
GND GND 1 1 1 1
WLP PACKAGE (A[6:2] = 00011)
ADDR0 A1 A0
V
DDIO
0 0
N.C. 1 0
GND 1 1
1
SCL
START
CONDITION
SDA
29
CLOCK PULSE
FOR
ACKNOWLEDGMENT
ACKNOWLEDGE
NOT ACKNOWLEDGE