参数资料
型号: DS2761BX-025/T&R
厂商: Maxim Integrated Products
文件页数: 11/24页
文件大小: 0K
描述: IC MON BATT LI-ION HP FLIP-CHIP
标准包装: 10,000
功能: 电池监控器
电池化学: 锂离子(Li-Ion)
电源电压: 2.5 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 12-UFBGA,FCBGA
供应商设备封装: 12-覆晶
包装: 带卷 (TR)
DS2761
MEMORY
The DS2761 has a 256-byte linear address space with registers for instrumentation, status, and control in
the lower 32 bytes, with lockable EEPROM and SRAM memory occupying portions of the remaining
address space. All EEPROM and SRAM memory is general purpose except addresses 30h, 31h, and 33h,
which should be written with the default values for the protection register, status register, and current
offset register, respectively. When the MSB of any 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.
EEPROM memory is shadowed by RAM to eliminate programming delays between writes and to allow
the data to be verified by the host system before being copied to EEPROM. All reads and writes to/from
EEPROM memory actually access the shadow RAM. In unlocked EEPROM blocks, the write data
command updates shadow RAM. In locked EEPROM blocks, the write data command is ignored. The
copy data command copies the contents of shadow RAM to EEPROM in an unlocked block of EEPROM
but has no effect on locked blocks. The recall data command copies the contents of a block of EEPROM
to shadow RAM regardless of whether the block is locked or not.
Table 3. MEMORY MAP
ADDRESS (HEX)
00
01
02–06
07
08
09–0B
0C
0D
0E
0F
10
11
12–17
18
19
1A–1F
20–2F
30–3F
40–7F
80–8F
90–FF
DESCRIPTION
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
READ/WRITE
R/W
R
R/W
R/W
R
R
R
R
R/W
R/W
R
R
R/W*
R/W*
R/W
* Each EEPROM block is read/write until locked by the LOCK command, after which it is read-only.
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