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ML9090-01- Datasheet

  • ML9090-01-

  • LCD Driver with Key Scanner and RAM

  • 38頁

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PEDL9090-02
隆 Semiconductor
ML9090-01,-02
LCD Driver with Key Scanner and RAM
This version: Jan. 2000
Previous version: Nov. 1998
Pr
ar
in
im
el
y
GENERAL DESCRIPTION
The ML9090-01 and ML9090-02 are LCD drivers that contain internal RAM and a key scan
function. They are best suited for car audio displays.
Since 1-bit data of the display RAM corresponds to the light-on or light-off of 1-dot of the LCD
panel (a bit map system), a flexible display is possible.
A single chip can implement a graphic display system of a maximum of 80
樓
16 dots (80
樓
8 dots
for the ML9090-01, 80
樓
16 dots for the ML9090-02) and an arbitrator display system of 80
樓
2 dots.
Since containing voltage multipliers, the ML9090-01 and ML9090-02 require no power supply
circuit to drive the LCD.
Since the internal 5
樓
5 scan circuit has eliminated the needs of key scanning by the CPU, the ports
of the CPU can be efficiently used.
FEATURES
鈥?Logic voltage: V
DD
2.7 to 5.5 V
鈥?LCD drive voltage: V
BI
6 to 16 V (positive voltage)
鈥?80 segment outputs,10 common outputs for ML9090-01 and 18 common outputs for ML9090-
02
鈥?Built-in bit-mapped RAM (ML9090-01: 80
樓
10 = 800 bits, ML9090-02: 80
樓
18 = 1440 bits)
鈥?4-pin serial interface with CPU:
CS, CP,
DI/O, KREQ
鈥?Built-in LCD drive bias resistors
鈥?Built-in voltage doubler and tripler circuits
鈥?Built-in 5
樓
5 key scanner
鈥?Port A output : 1 pin, output current: -15mA: (may be used for LED driving)
鈥?Port B output : 8 pins
Output current (available for the ML9090-01 only)
鈥?mA : 5 pins
鈥?5mA : 3 pins
鈥?Temperature range: 鈥?0 to +85藲C
鈥?Package: 128-pin plastic QFP (QFP128-P-1420-0.50-K) (Product name: ML9090-01GA)
(Product name: ML9090-02GA)
Model
Display duty
No. of display lines
No. of port B outputs
1/8
8
8
ML9090-01
1/9
9
8
1/10
10
8
1/16
16
鈥?/div>
ML9090-02
1/17
17
鈥?/div>
1/18
18
鈥?/div>
APPLICATION
鈥?Car audio
1/38

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