DS2790G+T&R Maxim Integrated Products, DS2790G+T&R Datasheet - Page 29

• Manufacturer Part Number: DS2790G+T&R
• Description: IC FUEL GAUGE BATT 28-TDFN
• Manufacturer: Maxim Integrated Products

Specifications of DS2790G+T&R

• Function: Fuel, Gas Gauge/Monitor
• Battery Type: Lithium-Ion (Li-Ion)
• Voltage - Supply: 2.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-TDFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 10. 2-Wire Communication Examples
I
I
DS2790 Software POR Sequence
DS2790 2-Wire Programming Request
2
2
S
S
S
S
C/SMBus Write Data Sequence
C/SMBus Read Data Sequence
Address
Address
Address
Address
Slave
Slave
Slave
Slave
Master to Slave
Slave to Master
Potential Clock Extension if Cmd Release Latch Clear,
Potential Clock Extension if Cmd Release Latch Clear,
Wr Ack
Wr Ack
Wr Ack
Wr Ack
Command Enable
Command Enable
Command
Command
Byte
Byte
FEh
FEh
CMD_HM_DIS = 0,
CMD_HM_DIS = 0,
and CMD_HM = 0
and CMD_HM = 0
Ack
Ack
Ack
Ack
Data Byte
P
P
Byte 1
Data
1
S
S
Address
Address
Ack
Ack
Slave
Slave
Data Byte
Data Byte
Wr Ack
Wr Ack
29 of 41
Initiate Programming over
8
n
Repeated FEh Generates
the 2-Wire Interface
Potential Clock Extension when RXD is full.
Software POR
Ack
Ack
FEh
FDh
Data Byte
S
9
Address
Ack
Ack
Slave
Ack
P
P
Rd
Potential Clock Extension when TXD is empty.
P
Ack
2-Wire Programming
Sequence Begins
Data Byte
1
Ack
Data Byte
2
Nack
P