HD44780UA02FS datasheet(13/59 Pages) HITACHI

Part #	HD44780UA02FS

Description	Dot Matrix Liquid Crystal Display Controller/Driver

Download	59 Pages

Scroll/Zoom	100%

Manufacturer	HITACHI [Hitachi Semiconductor]

Direct Link	http://www.renesas.com/eng

Logo

13 / 59 page

HD44780U

13

Character Generator ROM (CGROM)

The character generator ROM generates 5

× 8 dot or 5 × 10 dot character patterns from 8-bit character

codes (Table 4). It can generate 208 5

× 8 dot character patterns and 32 5 × 10 dot character patterns. User-

defined character patterns are also available by mask-programmed ROM.

Character Generator RAM (CGRAM)

In the character generator RAM, the user can rewrite character patterns by program. For 5

× 8 dots, eight

character patterns can be written, and for 5

× 10 dots, four character patterns can be written.

Write into DDRAM the character codes at the addresses shown as the left column of Table 4 to show the

character patterns stored in CGRAM.

See Table 5 for the relationship between CGRAM addresses and data and display patterns.

Areas that are not used for display can be used as general data RAM.

Modifying Character Patterns

• Character pattern development procedure

The following operations correspond to the numbers listed in Figure 7:

1. Determine the correspondence between character codes and character patterns.

2. Create a listing indicating the correspondence between EPROM addresses and data.

3. Program the character patterns into the EPROM.

4. Send the EPROM to Hitachi.

5. Computer processing on the EPROM is performed at Hitachi to create a character pattern listing, which

is sent to the user.

6. If there are no problems within the character pattern listing, a trial LSI is created at Hitachi and samples

are sent to the user for evaluation. When it is confirmed by the user that the character patterns are

correctly written, mass production of the LSI proceeds at Hitachi.

Similar Part No. - HD44780UA02FS

Manufacturer	Part #	Datasheet	Description
Hitachi Semiconductor	HD44780U	513Kb / 97P	Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function

Manufacturer	Part #	Datasheet	Description
Hitachi Semiconductor	HD66712	662Kb / 88P	Dot-Matrix Liquid Crystal Display Controller/Driver
KODENSHI_AUK CORP.	KK44780	366Kb / 10P	DOT MATRIX LIQUID CRYSTAL DISPLAY CONTROLLER & DRIVER
Hitachi Semiconductor	HD66710	507Kb / 73P	(Dot Matrix Liquid Crystal Display Controller/Driver)
Integral Corp.	IN44780U	190Kb / 10P	DOT MATRIX LIQUID CRYSTAL DISPLAY CONTROLLER & DRIVER
	IN44780	345Kb / 10P	DOT MATRIX LIQUID CRYSTAL DISPLAY CONTROLLER & DRIVER
	IZD1520U	221Kb / 12P	DOT MATRIX LIQUID CRYSTAL DISPLAY CONTROLLER & DRIVER
Hitachi Semiconductor	HD66780	2Mb / 48P	Dot Matrix Liquid Crystal Display Controller and Driver
	HD66717	716Kb / 90P	(Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver)
	HD44102	911Kb / 22P	Dot Matrix Liquid Crystal Graphic Display Column Driver)
List of Unclassifed Man...	AX6108	243Kb / 31P	Dot Matrix Liquid Crystal Graphic Display Column Driver