UC1682
80x104RGB CSTN Controller-Driver
Revision 0.6
7
Name
Type
Pins
Description
HIGH VOLTAGE LCD DRIVER OUTPUT
SEG1 ~
SEG312
HV
SEG (column) driver outputs. Support up to 104 x RGB pixels.
Leave unused drivers open-circuit.
COM1 ~
COM80
HV
COM (row) driver outputs. Support up to 80 rows. Leave unused COM
drivers open-circuit.
When designing LCM, always start from COM1. If the LCM has N pixel
rows and N is less than 80, set CEN to be N-1, and leave COM drivers
[N+1 ~ 80] open-circuit.
MISC. PINS
VDDX
O
Auxiliary VDD. These pins are connected to the main VDD bus on chip. They
are provided to facilitate chip configurations in COG and COF applications.
These pins should not be used to provide VDD power to the chip. It is not
necessary to connect VDDX to main VDD externally.
TST4
I/HV
Test control. This pin has on-chip pull-up/down resistor. Leave it open
during normal operation.
TST4 is also used as one of the high voltage programming power supply
for OTP operation. For COG design with OTP options, please wire out
TST4 with an ITO trace resistance of 200 Ω or less.
TST2
I/O
Test I/O pins. Leave these pins open during normal use.
TP[5:1]
I
Test control. Leave these pins open during normal use.
Note: Several control registers will specify “0 based index” for COM and SEG electrodes. In those
situations, COMX or SEGX will correspond to index X-1, and the value ranges for those index
registers will be 0~79 for COM and 0~311 for SEG.