参数资料
型号: DS2703G+T&R
厂商: Maxim Integrated Products
文件页数: 17/20页
文件大小: 0K
描述: IC BATT AUTHENTICAT SHA-1 8-TDFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 10,000
功能: 电池验证
电池化学: 锂离子(Li-Ion)
电源电压: 2.7 V ~ 5.5 V
工作温度: -20°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 8-TDFN
供应商设备封装: 8-TDFN-EP(2x3)
包装: 带卷 (TR)
DS2703 SHA-1 Battery Pack Authentication IC
LOW-IMPEDANCE DQ DURING COMPUTATION
The SHA-1 computation requires more current than the DQ pullup resistor used during normal communication can
supply. During the computation, the DQ source impedance must be reduced to maintain power to the device under
the higher load condition. The user must connect the low impedance source to the DQ line within t D of issuing any
command to perform a computation, and return the DQ source to normal settings before reading or writing to the
one-wire interface. See Figure 9.
Figure 9. Compute MAC Function Command
t D
t SHA
1-Wire SKIP ROM
Reset Cmd
Presence
Compute
MAC
Cmd
Apply Low
Impedance
Pull-up
(If needed)
8 Write 0
Time Slots
Up to 160 Read Time Slots
(Read 20-Byte MAC)
Pulse
17 of 20
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DS2703U+R 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:SHA-1 Battery Pack Authentication IC