Toshiba T6963C manual Software, Schematic diagram

Application Note

		80C51
	33pF		P1.0
	16.00mHz
		X1
			P1.1
		X 2	P1.2
	33pF		P1.3
			P1.4
	+5v		P1.5
1N4148	+
		1uF	P1.6
		RST
		10k	P1.7
			P3.0
			P3.1
			P3.2
			P3.3

	240x64LCDDISPLAY	+5v
D0	VD D	-15V
D1	FS
D2
D3	VL	20K
D4
D5	VSS
D6
D7	FG
WR
RD
CE
CD
RESET

Figure 2 Schematic diagram

Software:

The sample program here is written in 8051 assembly language and is designed to work with the hardware shown in Figure 2. It is based on a 240x64 display but is applicable to any LCD with the T6963C controller.

The program first resets the display. This reset must last a minimum of 2µS. It then sends a series of command bytes and parameters to the LCD controller to initialize it. The T6963C requires that the parameters, if any, are sent in the data mode and must precede the command byte, which is sent in the command mode.

The controller is initialized with the graphics page at 0000-077fh. This is 1920 bytes which will accommodate a full screen of data. No text is displayed in this example but the controller is initialized for text operation to illustrate the process. The text page starts immediately following the graphics page at location 0780h.

The FS (Font Select) line is set to a zero in this example which will place the 5x7 pixel character in a 8x8 pixel field. This will produce 30 characters per line with 8 lines per display (2408 =30 ). The total number of characters possible in this mode is 240. A one on the FS line will produce an 6x8 pixel field for each character.

After initialization the controller is set in the auto write mode and the display is filled with a bit- mapped graphic.

The code example is not written to be efficient but to be as simple as possible to follow.

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