SN8P2977
8-Bit Micro-Controller with Regulator, PGIA, 24-bit ADC
SONiX TECHNOLOGY CO., LTD
Page 99
Version 1.7
11.6 R-TYPE LCD DRIVER MODE
In LCD R-type driver, LCD power (VLCD) is auto connected to VDD via internal circuit. V3 and V2 bias voltage source
from internal voltage division by resistors. The following diagram shows the connection of 1/4 duty with 1/3 bias and 1/2
bias.
1/4 duty with 1/3 bias:
V3
V2
V
LCD
LCDMOD [1:0]
V
DD
35 k
Ω
SN8P2977
1uF
LCDBIAS = 0
( Open )
35 k
Ω
35 k
Ω
R-Type LCD current consumption =
3
35k
VLCD