Data Sheet

Read Data Protocol

The read data protocol is used to read to register from the

MAX17043/MAX17044 starting at the memory address

specified by MAddr. Both register bytes must be read

in the same transaction for the register data to be valid.

Data0 represents the data byte in memory location

MAddr, Data1 represents the data from MAddr + 1, and

DataN represents the last byte read by the master:

S. SAddr W. A. MAddr. A. Sr. SAddr R. A.

Data0. A. Data1. A... DataN. N. P

Data is returned beginning with the MSB of the data in

MAddr. Because the address is automatically increment-

ed after the LSB of each byte is returned, the MSB of the

data at address MAddr + 1 is available to the host imme-

diately after the acknowledgment of the data at address

MAddr. If the bus master continues to read beyond

address FFh, the MAX17043/MAX17044 output data val-

ues of FFh. Addresses labeled Reserved in the memory

map return undefined data. The bus master terminates

the read transaction at any byte boundary by issuing a no

acknowledge followed by a STOP or Repeated START.

PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO.

8 TDFN T823+1 21-0174 90-0091

9 UCSP W91C1+1 21-0459

Refer to

Application Note 1891

MAX17043/MAX17044 1-Cell/2-Cell Fuel Gauge with

ModelGauge and Low-Battery Alert

www.maximintegrated.com

Maxim Integrated

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Package Information

For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”,

“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing

pertains to the package regardless of RoHS status.