HD66764
Table 1 Pin Functions (cont)
Signal Name
COM1 to
COM176
TEST2,
TEST3
Quantity
176
2
Input/
Output
Output
Connected to
Liquid crystal
Output Open
Function
Signals to drive the common lines. Output either
of VCL, VCH, or VM levels. When selected,
VCH or VCL is output. When not selected, VM
is output. When the display is off, the GND level
is output.
Test pins. Leave these pins open.
8