03805-21-0100 IEE (INDUSTRIAL ELECTRONIC ENGINEERS), 03805-21-0100 Datasheet - Page 8

• Manufacturer Part Number: 03805-21-0100
• Description: 92B7890
• Manufacturer: IEE (INDUSTRIAL ELECTRONIC ENGINEERS)

Specifications of 03805-21-0100

• No. Of Digits / Alpha: 160
• Character Count X Line: 40 X 4
• Character Size: 10.4mm
• Supply Voltage: 5V
• Display Mode: Reflective
• Display Area Width: 248.7mm
• Display Area Height: 51.5mm

2.2.7 Character Generator RAM (CG RAM)
The CG RAM allows the user to define 8 types of 5 X 7 character patterns. Figure 4 shows the relationship
between CG RAM addresses and data patterns (Refer to Set CG RAM Address and Write to CG or DD RAM
instructions).
NOTES:
2.2.8 Parallel/Serial Data Conversion Circuitry, Timing Generator Circuitry
These blocks control the interface to the LCD drivers.
Industrial Electronic Engineers, Inc.
1) The CG RAM consists of 64 bytes. Any bytes not used for character pattern information can be
2) The 0, 1 and 2 bits of character code correspond to the 3, 4 and 5 bits of the CG RAM address.
3) The 0, 1 and 2 bits of the CG RAM address specify the row of the character pattern.
4) The 8th row of the character pattern corresponds to the cursor character pattern. If any bit in the
5) Since bit 3 is a "don't care", two character codes represent the same special character. For
7
0
Higher Order Bits
used for general purpose data RAM. The 5, 6 and 7 bits are never used for character pattern
information and are always available for use.
row is "1", then the corresponding cursor bit is a "1" regardless of cursor position. (For most
applications, the data should be "0" in this row, which allows for normal cursor operation on the
character.)
example, a character code of 07 (hexadecimal) selects the same character pattern as OF
(hexadecimal).
6
0
Van Nuys, California
Character Codes
(DD RAM Data)
Figure 4
5
0
Lower Order Bits
4
0
3
*
2
0
Relationship Between CG RAM Address, Character Codes (DD
RAM) and Character Patterns (CG RAM Data)
1
0
0
0
5
0
Higher Order Bits
Lower Order Bits
4
0
CG RAM
Address
3
0
Scale: NONE
SIZE
2
0
0
0
0
1
1
1
1
A
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
CODE IDENT NO.
05464
7
*
*
Higher Order Bits
6
*
*
Rev
Character Patterns
(CG RAM Data)
5
*
*
Lower Order Bits
C
4
1
1
1
1
1
1
1
0
3
1
0
0
1
0
0
0
0
2
1
0
0
1
1
0
0
0
Sheet 8
S03805–21–0100
1
1
0
0
1
0
1
0
0
0
0
1
1
0
0
0
1
0
Character
Pattern
Example
Cursor