DS2784G+T&R Maxim Integrated Products, DS2784G+T&R Datasheet - Page 38

• Manufacturer Part Number: DS2784G+T&R
• Description: IC FUEL GAUGE STND-ALONE 14-TDFN
• Manufacturer: Maxim Integrated Products

Specifications of DS2784G+T&R

• Function: Fuel, Gas Gauge/Monitor
• Battery Type: Lithium-Ion (Li-Ion), Lithium-Polymer (Li-Pol)
• Voltage - Supply: 2.5 V ~ 4.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 14-TDFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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 10. 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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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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