Rainbow Electronics DS1858 - Manual (Page 14)

DS1858
Dual Temperature-Controlled Resistors with
Three Monitors
14 ____________________________________________________________________
MEMORY
LOCATION
(hex)
EEPROM/
SRAM
R/W
DEFAULT
SETTING
(hex)
NAME OF LOCATION FUNCTION
6F SRAM — — Conversion updates —
Bit 7 — R/W 0 TAU
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.
6 — R/W 0 V CC U
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 0 MON1U
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 0 MON2U
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.
Main Device (continued)