ds1859 Maxim Integrated Products, Inc., ds1859 Datasheet - Page 15

• Manufacturer Part Number: ds1859
• Description: Ds1859 Dual, Temperature-controlled Resistors With Internally Calibrated Monitors
• Manufacturer: Maxim Integrated Products, Inc.

Main Device (continued)
LOCATION
MEMORY
6A to 6D
68 to 69
(hex)
Bit 7
Bit 7
6E
6F
6
5
4
3
2
1
0
6
5
Dual, Temperature-Controlled Resistors with
EEPROM/
SRAM
SRAM
SRAM
SRAM
SRAM
—
—
—
—
—
—
—
—
—
—
—
R/W
R/W
R/W
R/W
R/W
—
—
—
—
—
—
R
R
R
R
R
____________________________________________________________________
DEFAULT
SETTING
(hex)
—
—
—
—
Internally Calibrated Monitors
X
0
X
X
X
X
X
X
0
0
0
NAME OF LOCATION
Conversion updates
Measured MON3
(MSB to LSB)
Logic states
Reserved
MON1U
HIZSTA
HIZCO
RDYB
V
RXL
TAU
TXF
CC
X
X
X
U
Digitized measured value for MON3.
See Table 1.
Resistor status bit. A high indicates that both
resistors are in high-impedance mode. A low
indicates that both resistors are operating
normally.
Resistor control bit. Setting this bit high
causes both resistors to go into a high-
impedance state.
This status bit is high when OUT1 is high,
assuming there is an external pullup resistor
on OUT1.
This status bit is high when OUT2 is high,
assuming there is an external pullup resistor
on OUT2.
This status bit goes high when V
below the POA level.
This bit goes high after a temperature and
address update has occurred for the
corresponding measurement in bytes 60h to
61h. This bit can be written to a 0 by the user
and monitored to verify that a conversion has
occurred.
This bit goes high after a V
occurred for the corresponding measurement
in bytes 62h to 63h. This bit can be written to
a 0 by the user and monitored to verify that a
conversion has occurred.
This bit goes high after a MON1 update has
occurred for the corresponding measurement
in bytes 64h to 65h. This bit can be written to
a 0 by the user and monitored to verify that a
conversion has occurred.
FUNCTION
—
—
—
—
—
—
CC
update has
CC
has fallen
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