
DS1858
Dual Temperature-Controlled Resistors with
Three Monitors
14 ____________________________________________________________________
MEMORY
LOCATION
(hex)
EEPROM/
SRAM
SETTING
FUNCTION
6F SRAM — — Conversion updates —
Bit 7 —
R/W
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
R/W
This bit goes high after a V
CC
update has
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.
5—
R/W
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.
4—
R/W
This bit goes high after a MON2 update has
occurred for the corresponding measurement
in bytes 66h to 67h. This bit can be written to
a 0 by the user and monitored to verify that a
conversion has occurred.
3——0 MON3U
This bit goes high after a MON3 update has
occurred for the corresponding measurement
in bytes 68h to 69h. This bit can be written to
a 0 by the user and monitored to verify that a
conversion has occurred.
2——0 0 —
1——0 X —
0——0 X —
70 SRAM R Alarm flags —
Bit 7 — — — TMPhi
This alarm flag goes high when the upper limit
of the temperature setting is violated.
6——— TMPlo
This alarm flag goes high when the lower limit
of the temperature setting is violated.
5——— V
CC
hi
This alarm flag goes high when the upper limit
of the V
CC
setting is violated.
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