MSM6794 Datasheet, PDF (1/34 Pages) OKI electronic componets – DOT MATRIX LCD DRIVER WITH 128-CHANNEL RAM

E2B0046-27-Y2
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MSM6794
DOT MATRIX LCD DRIVER WITH 128-CHANNEL RAM
This version: N_Mov_S._M19₆9₇7₉₄
Previous version: Mar. 1996
GENERAL DESCRIPTION
The MSM6794 is a dot matrix graphic liquid crystal display LSI device to display bit maps.
It drives an LCD panel for dot matrix graphic display under the control of a 4- or 8-bit
microcomputer.
All necessary functions for driving a bit map type LCD are built in on one chip. Therefore,by
using the MSM6794, a bit map type dot matrix graphic liquid crystal display system can be
implemented with a small number of chips.
Since 1-bit data of the display RAM corresponds to the light-on/off of 1-dot of the LCD panel (bit
map system), a flexible display, including kanji display, is possible. One chip comprises a graphic
display system of a maximum of 128Â¥48 dots. This display can be expanded by using multiple
chips.
The MSM6794 uses CMOS process. Since it is an internal RAM type, the MSM 6794 features low
power consumption, and is suited to display for battery-driven portable equipment.
FEATURES
• Segment outputs
• Common outputs
• Display duty
• Bit map type internal RAM
• Display data I/F
• Standby function by program
• LCD drive bias resistor (externally connected)
• Built-in voltage multiplier circuit
• LOGIC voltage
• LCD driving voltage
• Low current consumption
• Number of pads
: Maximum of 128
: Maximum of 48
: 1/33, 1/41, 1/44, 1/48
: 6,144 bits (128Â¥48 bits)
: 8-bit parallel/serial switchable
: 2.7 to 5.5V
: V_BI 5 to 12V (positive voltage)
: Maximum of 10mA (in standby mode)
: 224
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