DS2775 Datasheet, PDF (38/44 Pages) Maxim Integrated Products – 2-Cell, Stand-Alone, Li+ Fuel-Gauge IC with Protector and Optional SHA-1 Authentication

2-Cell, Stand-Alone, Li+ Fuel-Gauge IC with
Protector and Optional SHA-1 Authentication
t_SHA
1-Wire
RESET
SKIP-ROM
COMMAND
PRESENCE
PULSE
COMPUTE
MAC COMMAND
Figure 25. Compute MAC Function Command
WAIT FOR MAC
COMPUTATION
t_SHA
8 WRITE-ZERO
TIME SLOTS
UO TO 160 READ TIME SLOTS
(READ 20-BYTE MAC)
t_EEC
1-Wire
RESET
SKIP-ROM
COMMAND
WAIT FOR MAC
COMPUTATION
PRESENCE
PULSE
COMPUTE
NEXT SECRET COMMAND
Figure 26. Compute Next Secret Function Command
WAIT FOR EEPROM
PROGRAMMING
t_EEC
1-Wire
RESET
SKIP-ROM
COMMAND
COPY
COMMAND
8 WRITE
TIME SLOTS
WAIT FOR EEPROM
PROGRAMMING
PRESENCE
PULSE
Figure 27. Copy Function Command
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