PEDL9044-03
1
Semiconductor
ML9044-xxA/xxB
DOT MATRIX LCD CONTROLLER DRIVER
This version:
Mar. 2001
Previous version: Dec. 1999
Preliminary
GENERAL DESCRIPTION
The ML9044 used in combination with an 8-bit or 4-bit microcontroller controls the operation of a character type
dot matrix LCD.
FEATURES
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Easy interfacing with 8-bit or 4-bit microcontroller
Switchable between serial and parallel interfaces
Dot-matrix LCD controller/driver for a small (5
×
7 dots) or large (5
×
10 dots) font
Built-in circuit allowing automatic resetting at power-on
Built-in 17 common signal drivers and 120 segment signal drivers
Built-in character generation ROM capable of generating 160 small characters (5
×
7 dots) or 32 large
characters (5
×
10 dots)
Creation of character patterns by programming: up to 8 small character patterns (5
×
8 dots) or up to 4 large
character patterns (5
×
11 dots)
Built-in RC oscillation circuit using external or internal resistors
Program-selectable duties: 1/9 duty (1 line: 5
×
7 dots + cursor + arbitrator), 1/12 duty (1 line: 5
×
10 dots +
cursor + arbitrator), or 1/17 duty (2 lines: 5
×
7 dots + cursor + arbitrator)
Built-in bias dividing resistors to drive the LCD
Bi-directional transfer of segment outputs
Bi-directional transfer of common outputs
Equipped with a 120-dot arbitrator
Display shifting on each line
Built-in contrast control circuit
Built-in voltage multiplier circuit
Chip (Gold Bump)
Product name: ML9044-xxA/xxB CVWA (xx: Character generator ROM code number)
ML9044-51A/51B CVWA (General character generator ROM code)
xxA: With dummy bumps on both sides of the chip
xxB: Without dummy bumps on both sides of the chip
1/60
OKI [ OKI ELECTRONIC COMPONETS ]
