SN8P2977
8-Bit Micro-Controller with Regulator, PGIA, 24-bit ADC
SONiX TECHNOLOGY CO., LTD
Page 98
Version 1.7
11.5 C-TYPE LCD DRIVER MODE
The LCD C-type driver mode is support 1/3 and 1/2 bias LCD panel. The LCD power (VLCD) is supplied by internal
LCD charge-pump. The C-Type LCD charge-pump voltage level is following VLCD voltage. In C-type LCD mode, the
LCDMOD[1:0] bits f LCDM1 register must be
“0”. The following are shown the 1/3 and 1/2 bias C-Type LCD application
circuit and VLCD output voltage chart.
SN8P2977
VLCD
COM0~ COM3
SEG0~SEG15
LCD
PANEL
1uF
1/3 and 1/2 Basic C-type LCD Application Circuit
Note1: In C-type mode, a 1uF capacitor is connected to pin VLCD to VSS.
Note2: VLCD output voltage can be set from 2.6V to 3.3V and with ±0.2V accuracy.