Currently I´m designing a power supply based on the well known LM317 voltage regulator and needed a lcd module to show the voltage and current values. Some time ago, a friend give me some PRO59801 pinpad lcd modules which is a module based on the KS0713 controller. The problem is, that this module, has an 8bit parallel interface and I´m using a low pin count pic micro. After reading the KS0713 datasheet, I fount that this controller has a serial interface that can be selected via HW pin, also the controller is on a flex cable that connects the pcb to the glass, a search took me to an BP12864C lcd/controller solution again reading the datasheet found the pin that selects the serial/parallel interface.
The module with the original connection
1 - GND
2 - VCC
3 - NC
4 - /RST
5 - /CS1
6 - RS
7 - RW_WR
8 - E_RD
9-14 DB0-DB5
DB6 - CLK
DB7 - SID
17 - led+
18 - led-
Originaly the PS pin is connected to VDD by the track marked by the red circule, just needed to cut it and connect the PS pin to GND, luckily the next pin was already conected to GND so only had to make the connection marked by the yellow circule.
Here is the final work
The power supply still is in development this is a test version, todo is the current adjustment and dummy load
