Rainbow Electronics DS1852 User Manual
Page 15
DS1852
15 of 25
Table 00h (Lower)
Memory Location
(Table 00h, Lower)
Name of Location
Function
00h – 5Fh
IEEE Data
This memory block is used to store required GBIC data.
60h
Temperature MSB
This byte contains the MSB of the 15-bit 2’s complement
temperature output from the temperature sensor.
61h
Temperature LSB
This byte contains the LSB of the 15-bit 2’s complement
temperature output from the temperature sensor.
62h – 63h
V
cc
Value
These bytes contain the MSB (62h) and the LSB (63h) of the
measured V
CC
.
64h – 65h
B
in
Value
These bytes contain the MSB (64h) and the LSB (65h) of the
measured B
in.
66h – 67h
P
in
Value
These bytes contain the MSB (66h) and the LSB (67h) of the
measured P
in.
68h – 69h
R
in
Value
These bytes contain the MSB (68h) and the LSB (69h) of the
measured R
in.
6Eh
IO States
Bit 0 will be 0 when the analog monitoring is active.
6Fh
A/D Updated
Allows the user to verify if an update from the A/D has occurred to
the five values: temperature, V
CC
, B
in
, P
in
and R
in
. The user writes
the byte to 00h. Once a conversion is complete for a given value, its
bit will change to ‘1’.
70h – 73h
Alarm Flags
These bits reflect the state of the alarms as a conversion updates.
High alarm bits are ‘1’ if converted value is greater than
corresponding high limit. Low alarm bits are ‘1’ if converted value
is less than corresponding low limit. Otherwise, bits are ‘0’.
74h – 77h
Warning Flags
These bits reflect the state of the warnings as a conversion updates.
High warning bits are ‘1’ if converted value is greater than
corresponding high limit. Low warning bits are ‘1’ if converted
value is less than corresponding low limit. Otherwise, bits are ‘0’.
7Bh – 7Eh
Password Entry Bytes
PWE Byte 3 (7Bh) MSByte
PWE Byte 2 (7Ch)
PWE Byte 1 (7Dh)
PWE Byte 0 (7Eh) LSByte
The four bytes are used for password entry. The entered password
will determine the user’s R/W privileges. During power-up these
bits are set to all 1s.
7Fh
Table Select Byte
This byte determines which of the upper memory pages are
selected.
00h — No physical memory
01h — Manufacturer EEPROM
02h — Manufacturer EEPROM
03h — Device settings