E2B0052-19-66
¡ Semiconductor
¡ Semiconductor
ML9052
GENERAL DESCRIPTION
This version: Jun. 1999
ML9052
e
Pr
lim
y
ar
in
132-Channel LCD Driver with Built-in RAM for LCD Dot Matrix Displays
The ML9052 is an IC for dot matrix graphic LCD devices carrying out bit map display. This IC
can drive a dot matrix graphic LCD panel under the control of an 8-bit microcontroller. Since all
the functions necessary for driving a bit map type LCD device are incorporated in a single chip,
using the ML9052 makes it possible to implement a bit map type dot matrix graphic LCD system
with only a few chips.
Since the bit map method, in which one bit of display RAM data turns ON or OFF one dot in the
display panel, is employed, it is possible to carry out displays with a high degree of freedom such
as Chinese character displays, etc. With a single device, it is possible to construct a graphic
display system with a maximum of 132
¥
97 dots. The display can be expanded further using two
devices.
The ML9052 with a built-in RAM, which is fabricated using the CMOS process, achieves low-
power operation and is ideally suitable for displays in battery-operated portable equipment.
The ML9052 has 97 common signal outputs and 132 segment signal outputs and a single device
can drive a display of up to 97
¥
132 dots.
This device is not resistant to radiation or to light.
FEATURES
• Direct display of the RAM data using the bit map method
Display RAM data "1" ... Dot is displayed
Display RAM data "0" ... Dot is not displayed
• Display RAM capacity
97
¥
132 = 12804 dots
• LCD drive circuits
97 common outputs, 132 segment outputs
• Microcontroller interface: Can select an 8-bit parallel or serial interface
• Built-in voltage multiplier circuit for the LCD drive power supply
• Built-in LCD drive power supply adjustment circuit
• Built-in LCD drive bias resistors
• Line inversion drive/frame inversion drive (selected by a command)
• Built-in oscillator circuit (Internal RC oscillator/external clock input)
• A variety of commands
Read/write of display data, display ON/OFF, normal/reverse display, all dots ON/all dots
OFF, set page address, set display start address, etc.
• Power supply voltage
Logic power supply: V
DD
-V
SS
= 1.8 V to 5.5 V
Voltage multiplier reference voltage: V
IN
-V
SS
= 1.8 V to V
DD
(5-times multiplier
Æ
1.8 V to 3.6 V, 6-times multiplier
Æ
1.8 to 3 V, 7-times multiplier
Æ
1.8
to 2.5 V)
LCD drive voltage: V
BI
-V
SS
= 6.0 to 18 V
• Package: Gold bump chip, TCP
1/64
OKI [ OKI ELECTRONIC COMPONETS ]
