OKI Semiconductor
ML9041A-xxA/xxB
DOT MATRIX LCD CONTROLLER DRIVER
PEDL9041A-02
Issue Date: Mar. 15, 2002
Preliminary
GENERAL DESCRIPTION
The ML9041A 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 100 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
100-dot arbitrator display
Line display shifting
Built-in contrast control circuit
Built-in voltage multiplier circuit
Gold Bump Chip
With dummy bumps on both sides of the chip:
ML9041A-xxA CVWA
Without dummy bumps on both sides of the chip: ML9041A-xxB CVWA
*xx indicates a character generator ROM code number.
*01A and 01B indicate general character generator ROM code numbers.
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