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参数资料
| 型号： | DS2778G+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 38/46页 |
| 文件大小： | 0K |
| 描述： | IC FUEL GAUGE LI+ 2CELL 14-TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 功能： | 燃料，电量检测计/监控器 |
| 电池化学： | 锂离子（Li-Ion）、锂聚合物（Li-Pol） |
| 电源电压： | 4 V ~ 9.2 V |
| 工作温度： | -20°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-WFDFN 裸露焊盘 |
| 供应商设备封装： | 14-TDFN-EP（3x5） |
| 包装： | 带卷 (TR) |
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2-Cell, Stand-Alone, Li+ Fuel-Gauge IC with
Protector and Optional SHA-1 Authentication
register, address 1Fh, bit 6) to a 1. If the LOCK bit is 0
or if setting the LOCK bit to 1 does not immediately
precede the Lock command, the Lock command has
Table 12. All Function Commands
no effect. The Lock command is permanent; a locked
block can never be written again.
COMMAND
Write Challenge
Compute MAC without ROM ID (and
Return MAC for the DS2776 only)
Compute MAC with ROM ID (and Return
MAC for the DS2776 only)
Clear Secret
Compute Next Secret without the ROM ID
Compute Next Secret with ROM ID
Read ROM ID (DS2778 only)
Read MAC (DS2778 only)
Lock Secret
HEX
0Ch
36h
35h
5Ah
30h
33h
39h
3Ah
60h
DESCRIPTION
Writes 64-bit challenge for SHA-1 processing. Required immediately prior
to all Compute MAC and Compute Next Secret commands.
Computes hash of the message block with logical 1s in place of ROM ID.
(Returns the 160-bit MAC for the DS2776 only.)
Computes hash of the message block using the ROM ID. (Returns the
160-bit MAC for the DS2776 only.)
Clears the 64-bit secret to 0000 0000 0000 0000h.
Generates new global secret.
Generates new unique secret.
Returns the ROM ID (DS2778 only).
Returns the 160-bit MAC (DS2778 only).
Sets lock bit to prevent changes to the secret.
Read Data
Write Data
Copy Data
Recall Data
Lock
69h, XXh Reads data from memory starting at address XXh.
6Ch, XXh Writes data to memory starting at address XXh.
48h, XXh Copies shadow RAM data to EEPROM block containing address XXh.
B8h, XXh Recalls EEPROM block containing address XXh to RAM.
6Ah, XXh Permanently locks the block of EEPROM containing address XXh.
Reset
BBh
Resets DS2775/DS2776 (software POR).
Table 13. Guide to Function Command Requirements
COMMAND
Write Challenge
Compute MAC
Compute Next Secret
Clear/Lock Secret, Set/Clear
Read Data
Write Data
Copy Data
Recall Data
Lock
Reset
ISSUE MEMORY ADDRESS
(BITS)
—
—
—
—
8
8
8
8
8
—
ISSUE 00h BEFORE READ
—
Yes
—
—
—
—
—
—
—
—
READ/WRITE TIME SLOTS
Write: 64
Read: Up to 160
—
—
Read: Up to 2048
Write: Up to 2048
—
—
—
—
38
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2778K | 功能描述:电源管理IC开发工具 RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| DS2780 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Stand-Alone Fuel Gauge IC |
| DS2780_09 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Standalone Fuel Gauge IC |
| DS2780E | 制造商:Maxim Integrated Products 功能描述:STANDALONG FUELD GAUGE TSSOP - Rail/Tube |
| DS2780E/R | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Stand-Alone Fuel Gauge IC |
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