DS2784 Maxim Integrated Products, DS2784 Datasheet - Page 34
DS2784
Manufacturer Part Number
DS2784
Description
1-Cell Stand-Alone Fuel Gauge IC
Manufacturer
Maxim Integrated Products
Datasheet
1.DS2784.pdf
(37 pages)
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Table 12. Guide to Function Command Requirements
Write Challenge
Compute MAC
Compute Next Secret
Clear/Lock Secret, Set/Clear
Overdrive
Read Data
Write Data
Copy Data
Recall Data
Lock
Reset
Figure 9. Compute MAC Function Command
1-Wire
Reset
Presence
Pulse
COMMAND
SKIP ROM
Cmd
DS2784: 1-Cell Stand-Alone Fuel Gauge IC with Li+ Protector and SHA-1 Authentication
Compute
MAC
Cmd
ISSUE MEMORY
Wait for MAC
Computation
ADDRESS
t
SHA
8 bits
8 bits
8 bits
8 bits
8 bits
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34 of 37
BEFORE READ
Time Slots
ISSUE 00h
8 Write 0
Yes
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Up to 160 Read Time Slots
(Read 20-Byte MAC)
Read: up to 2048
Write: up to 2048
Read: up to 160
READ/WRITE
TIME SLOTS
Write: 64
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