Datasheet
Table Of Contents
- FEATURES
- DESCRIPTION
- ABSOLUTE MAXIMUM RATINGS
- DISSIPATION RATINGS
- RECOMMENDED OPERATING CONDITIONS
- ELECTRICAL CHARACTERISTICS
- DEVICE INFORMATION
- PARAMETER MEASUREMENT INFORMATION
- TYPICAL CHARACTERISTICS
- DETAILED DESCRIPTION
- APPLICATION INFORMATION
DATA IN
Start
DATA OUT ACK
RFA A1 A0 D4 D3 D2 D1 D0DA7
0
DA6
1
DA5
0
DA4
0
DA3
1
DA2
1
DA1
1
DA0
0
Device Address DATABYTE
EOS Start EOS
Start
TPS62420-Q1
www.ti.com
SLVSA56 –DECEMBER 2009
MODE Selection
Because of the MODE/DATA pin is used for two functions, interface and a MODE selection, the device needs to
determine when it has to decode the bit stream or to change the operation mode.
The device enters forced PWM mode operation immediately whenever the MODE/DATA pin turns to high level.
The device stays also in forced PWM mode during the whole time of a protocol reception.
With a falling edge on the MODE/DATA pin the device starts bit decoding. If the MODE/DATA pin stays low for at
least t
timeout
, the device get’s an internal timeout and Power Save Mode operation is enabled.
A protocol which is sent within this time will be ignored, because the falling edge for the Mode change will be first
interpreted as start of the first bit. In this case it is recommended to send first the protocol and change at the end
of the protocol to Power Save Mode.
Figure 28. Easy Scale Protocol Overview
Copyright © 2009, Texas Instruments Incorporated Submit Documentation Feedback 21
Product Folder Link(s): TPS62420-Q1