DS2760 Dallas Semiconducotr, DS2760 Datasheet - Page 11

• Manufacturer Part Number: DS2760
• Description: High Precision Li-Ion Battery Monitor
• Manufacturer: Dallas Semiconducotr

MEMORY MAP – Table 3
Each EEPROM block is read/write until locked by the LOCK command, after which it is read-only.
PROTECTION REGISTER
The Protection Register consists of flags that indicate protection circuit status and switches that give
conditional control over the charging and discharging paths. Bits OV, UV, COC and DOC are set when
corresponding protection conditions occur and remain set until cleared by the host system. The default
values of the CE and DE bits of the Protection Register are stored in lockable EEPROM in the
corresponding bits in address 30h. A Recall Data command for EEPROM block 1 recalls the default
values into CE and DE. The format of the Protection Register is shown in Figure 9. The function of each
bit is described in detail in the following paragraphs.
PROTECTION REGISTER FORMAT Figure – 9
OV – Overvoltage Flag. When set to 1, this bit indicates the battery pack has experienced an overvoltage
condition. This bit must be reset by the host system.
UV – Undervoltage Flag. When set to 1, this bit indicates the battery pack has experienced an
undervoltage condition. This bit must be reset by the host system.
Address (Hex)
09-0B
1A-1F
90-FF
02-06
12-17
20-2F
30-3F
40-7F
80-8F
0C
0D
0E
00
01
07
08
0F
10
11
18
19
bit 7
OV
Protection Register
Status Register
Reserved
EEPROM Register
Special Feature Register
Reserved
Voltage Register MSB
Voltage Register LSB
Current Register MSB
Current Register LSB
Accumulated Current Register MSB
Accumulated Current Register LSB
Reserved
Temperature Register MSB
Temperature Register LSB
Reserved
EEPROM, block 0
EEPROM, block 1
Reserved
SRAM
Reserved
bit 6
UV
COC
bit 5
DOC
bit 4
Address 00
Description
11 of 25
bit 3
CC
bit 2
DC
bit 1
CE
bit 0
DE
Read/Write
R/W*
R/W*
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R
R
R
R
R
DS2760