DM300014 Microchip Technology, DM300014 Datasheet - Page 61

• Manufacturer Part Number: DM300014
• Description: BOARD DEMO DSPICDEM 1.1 GEN PURP
• Manufacturer: Microchip Technology

Specifications of DM300014

• Processor To Be Evaluated: PIC30F
• Data Bus Width: 16 bit
• Interface Type: RS-485, CAN, SPI
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

 2003 Microchip Technology Inc.
B.3.2.2
The pixel commands give the user control over individual pixels. Pixel coordinates
(X,Y) have their origin at the lower left of the LCD display. The coordinate range is
X: 0-121 and Y: 0-31. The PixPos (X,Y) specifies the default location for pixel
commands. The home position is the bottom left of the LCD display, PixPos = (0,0).
B.3.2.3
The column commands are used to write bitmaps to the display. A column is a vertical
column of 8 pixels that spans the height of one of the character rows. Column
coordinates (X,R) have their origin at the upper left corner of the LCD.
The X is defined the same as for the pixel coordinates and the R is defined the same
as for the character coordinates. The coordinate range is X: 0->121 and R: 0->3. The
ColPos (X,R) specifies the default location for column commands. The home position
is the top left of the LCD display, ColPos = (0,0).
Unless otherwise specified, incrementing ColPosX past 121 will wrap to the next line
(i.e., ColPosX = 0 and ColPosY + 1). If ColPosY exceeds 31, it will wrap to line 0.
B.3.3
Upon a device RESET, the following LCD controller conditions are valid:
• Character cursor off
• All coordinate variables are set to their home values:
B.3.4
A basic command format is implemented on the PIC18F242. In general,
communicating with the PIC18F242 LCD controller requires adherence to this protocol:
• Command name: Description
• Cmd: Opcode value
• Data: Number of data bytes
- ChrPosC = 0, ChrPosR = 0
- PixPosX = 0, PixPosY = 0
- ColPosX = 0, ColPosR = 0
- ScrollY = 0
- [7 6 5 4 3 2 1 0] Command dependent data
- [7 6 5 4 3 2 1 0] Command dependent data
- [7 6 5 4 3 2 1 0] Command dependent data
PIXELS
COLUMNS
Power-up Defaults
Command Description
Advance Information
LCD Controller Specification
DS70099B-page 57