Integrated circuits, Transistor, Semiconductors Free Datasheet Search and Download Site


ST7066U View Datasheet(PDF) - Unspecified

Part NameST7066U Unspecified1
Unspecified 
DescriptionDot Matrix LCD Controller/Driver


ST7066U Datasheet PDF : 42 Pages
First Prev 11 12 13 14 15 16 17 18 19 20 Next Last
ST7066U
l Character Generator ROM (CGROM)
The character generator ROM generates 5 x 8 dot or 5 x 11 dot character patterns from 8-bit character codes. It
can generate 240 5 x 8 dot character patterns. User-defined character patterns are also available by
mask-programmed ROM.
l Character Generator RAM (CGRAM)
In the character generator RAM, the user can rewrite character patterns by program. For 5 x 8 dots, eight
character patterns can be written, and for 5 x 11 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.
l Timing Generation Circuit
The timing generation circuit generates timing signals for the operation of internal circuits such as
DDRAM, CGROM and CGRAM. RAM read timing for display and internal operation timing by MPU
access are generated separately to avoid interfering with each other. Therefore, when writing data to
DDRAM, for example, there will be no undesirable interference, such as flickering, in areas other than
the display area.
l LCD Driver Circuit
LCD Driver circuit has 16 common and 40 segment signals for LCD driving. Data from CGRAM/CGROM is
transferred to 40 bit segment latch serially, and then it is stored to 40 bit shift latch. When each common is
selected by 16 bit common register, segment data also output through segment driver from 40 bit segment latch.
In case of 1-line display mode, COM1 ~ COM8 have 1/8 duty or COM1 ~ COM11 have 1/11duty , and in 2-line
mode, COM1 ~ COM16 have 1/16 duty ratio.
l Cursor/Blink Control Circuit
It can generate the cursor or blink in the cursor/blink control circuit. The cursor or the blink appears in the digit at
the display data RAM address set in the address counter.
V2.2
12/42
2006/05/11
Direct download click here
HOME 'ST7066U' Search

[Sitronix Technology Co., Ltd.]

Description
The ST7066U dot-matrix liquid crystal display controller and driver LSI displays alphanumeric, Japanese kana characters, and symbols. It can be configured to drive a dot-matrix liquid crystal display under the control of a 4-or8-bit microprocessor. Since all the functions such as display RAM, character  generator,  and  liquid  crystal  driver,  required fordriving a dot-matrix liquid crystal display are internally provided on one chip,  a minimal system can be interfaced with this controller/driver.

Features
● 5 x 8 and 5 x 11 dot matrix possible
● Low power operation support:
   -- 2.7 to 5.5V
● Wide range of LCD driver power
   -- 3.0 to 10V
● Correspond to high speed MPU bus
   interface
   -- 2 MHz (when VCC = 5V)
● 4-bit or 8-bit MPU interface enabled
● 80 x 8-bit display RAM (80 characters max.)
● 13,200-bit character generator ROM for a
   total of 240 character fonts(5 x 8 dot or 5 x 11
   dot)
● 64 x 8-bit character generator RAM
   -- 8 character fonts (5 x 8 dot)
   -- 4 character fonts (5 x 11 dot)
● 16-common x 40-segment liquid crystal
   display driver
● Programmable duty cycles
   -- 1/8 for one line of 5 x 8 dots with cursor
   -- 1/11 for one line of 5 x 11 dots & cursor
   -- 1/16 for two lines of 5 x 8 dots & cursor
● Wide range of instruction functions:
   Display clear, cursor home, display on/off,
   cursor on/off, display character blink, cursor
   shift, display shift
● Automatic reset circuit that initializes the
   controller/driver after power on
● Internal oscillator with external resistors
● Low power consumption
● QFP80 and Bare Chip available

Share Link : 

한국어     日本語     русский     简体中文     español
@ 2015 - 2018  [ Home  ] [ Privacy Policy ] [ Request Datasheet  ] [ Contact Us ]