Table of Contents
Advertisement
C.2 Power Saving by Power Supply Control
The following shows some power control methods effective for power saving.
Internal logic voltage regulator
• Setting the internal operating voltage V
Set V
to 1.8 V during normal operation and do not set it to 2.5 V except for Flash programming.
D1
• Enabling the heavy load protection function for the internal logic voltage regulator increases current
consumption.
Disable the heavy load protection function during normal operation except when the internal logic voltage
regulator becomes unstable due to driving a heavy load.
LCD system voltage regulator
• Turning the power voltage booster on increases current consumption.
If the supply voltage V
voltage regulator with V
than 2.5 V.
• Enabling the heavy load protection function for the LCD system voltage regulator increases current
consumption.
Disable the heavy load protection function during normal operation except when the display quality on the
LCD becomes unstable due to driving a heavy load.
• When the LCD display is not necessary, turn the LCD driver off. Also the power voltage booster should be
turned off.
Supply voltage detector (SVD)
• The SVD operation increases current consumption.
Turn the SVD module off when supply voltage detection is not necessary.
S1C17704 TECHNICAL MANUAL
to 2.5 V increases current consumption.
D1
is 2.5 V or more, turn the power voltage booster off and drive the LCD system
DD
. The power voltage booster should be used when the supply voltage V
DD
EPSON
APPENDIX C POWER SAVING
DD
is less
AP-33
Advertisement
Table of Contents
