Datasheet
DS2746 Low-Cost 2-Wire Battery Monitor
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Figure 1. Accumulation Bias Register Format
Address 62h
S 2
4
2
3
2
2
2
1
2
0
X X
MSb LSb
“S”: sign bit
Units: 6.25Vh/Rsns
MEMORY
The DS2746 has memory space with registers for instrumentation, status, and control. When the MSB of a two-
byte register is read, both the MSB and LSB are latched and held for the duration of the read data command to
prevent updates during the read and ensure synchronization between the two register bytes. For consistent results,
always read the MSB and the LSB of a two-byte register during the same read data command sequence.
Table 4. Memory Map
ADDRESS (HEX) DESCRIPTION READ/WRITE POR DEFAULT
00 Reserved —
01 Status/Config Register R/W X1110X00b
02 to 07 Reserved —
08 Auxiliary Input 0 Register MSB R 00h
09 Auxiliary Input 0 Register LSB R 00h
0A Auxiliary Input 1 Register MSB R 00h
0B Auxiliary Input 1 Register LSB R 00h
0C Voltage Register MSB R 00h
0D Voltage Register LSB R 00h
0E Current Register MSB R 00h
0F Current Register LSB R 00h
10 Accumulated Current Register MSB R/W Undefined
11 Accumulated Current Register LSB R/W Undefined
12 to 60 Reserved —
61 Offset Bias Register R/W 00h
62 Accumulation Bias Register R/W 00h
63 to FF Reserved —