ina219 datasheet
Table Of Contents
- 1 Features
- 2 Applications
- 3 Description
- Table of Contents
- 4 Revision History
- 5 Related Products
- 6 Pin Configuration and Functions
- 7 Specifications
- 8 Detailed Description
- 8.1 Overview
- 8.2 Functional Block Diagram
- 8.3 Feature Description
- 8.4 Device Functional Modes
- 8.5 Programming
- 8.6 Register Maps
- 9 Application and Implementation
- 10 Power Supply Recommendations
- 11 Layout
- 12 Device and Documentation Support
- 13 Mechanical, Packaging, and Orderable Information
INA219
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SBOS448G –AUGUST 2008–REVISED DECEMBER 2015
pointer. This byte is followed by an Acknowledge from the master; then the slave transmits the least significant
byte. The master acknowledges receipt of the data byte. The master may terminate data transfer by generating a
Not-Acknowledge after receiving any data byte, or generating a START or STOP condition. If repeated reads
from the same register are desired, it is not necessary to continually send the register pointer bytes; the INA219
retains the register pointer value until it is changed by the next write operation.
Figure 15 and Figure 16 show write and read operation timing diagrams, respectively. Note that register bytes
are sent most-significant byte first, followed by the least significant byte. Figure 17 shows the timing diagram for
the SMBus Alert response operation. Figure 18 shows a typical register pointer configuration.
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