Other Power Saving Methods - Epson S1C17M01 Technical Manual

APPENDIX B POWER SAVING
B.2 Other Power Saving Methods
Supply voltage detector configuration
Continuous operation mode (SVDCTL.SVDMD[1:0] bits = 0x0) always detects the power supply voltage,
therefore, it increases current consumption. Set the supply voltage detector to intermittent operation mode or
turn it on only when required.
LCD driver configurations
• Setting the LCD voltage regulator to operate with the V
creases current consumption. Select the V
supply voltage V
DD
• The lower booster clock frequency setting (LCD8TIM.BSTC[1:0] bits) for the LCD voltage booster decreas-
es current consumption. Note, however, that the load characteristic becomes worse.
• Setting the LCD voltage regulator into heavy load protection mode (LCD8PWR.HVLD bit = 1) increases
current consumption. Heavy load protection mode should be set only when the display becomes unstable.
AP-B-2
reference voltage (LCD8PWR.VCSEL bit = 1) when the power
C2
is 2.2 V or higher.
Seiko Epson Corporation
reference voltage (LCD8PWR.VCSEL bit = 0) in-
C1
S1C17M01 TECHNICAL MANUAL
(Rev. 1.2)