ML9090A-01

Features:

• Logic voltage: 2.7 to 5.5 V
• LCD drive voltage: 6 to 16 V (positive voltage)
• 80 segment outputs, 10 common outputs for ML9090A-01 and 18 common outputs for ML9090A-02
• Built-in bit-mapped RAM (ML9090A-01: 80 * 10 = 800 bits, ML9090A-02: 80 * 18 = 1440 bits)
• 4-pin serial interface with CPU: CS, CP, DI/O, KREQ
• Built-in LCD drive bias resistors
• Built-in voltage doubler or tripler circuit
• Built-in 5 * 5 key scanner
• Port A output : 1 pin, output current: 15 mA: (may be used for LED driving)
• Port B output : 8 pins
  Output current (available for the ML9090A-01 only)
2 mA : 5 pins
15 mA : 3 pins
• Temperature range: 40 to +85°C
• Package: 128-pin plastic QFP (QFP128-P-1420-0.50-K) (Product name: ML9090A-01GA)
  (Product name: ML9090A-02GA)


Pinout




Specifications

Parameter	Symbol	Condition	Rating	Unit	Applicable Pins
Power Supply Voltage	VDD	Ta = 25°C	0.3 to +7.0	V	VDD
Bias Voltage	VBI	Ta = 25°C	0.3 to +18.0	V	VC1, VC2, VS1, VS2, V2,V3A, V3B
Voltage Multiplier ReferenceVoltage	VIN	Ta = 25°C*1	0.3 to +9.0	V	VIN
		Ta = 25°C*2	0.3 to +6.0
Input Voltage	VI	Ta = 25°C	0.3 to VDD +0.3	V	CS, CP, DI/O,OSC1, RESET, DT,TEST, C0 to C4
Output Current	IO	Ta = 25°C	-20	mA	PA0, PB5 to PB7
		Ta = 25°C	-3	mA	PB0 to PB4
Power Dissipation	PD	Ta = 85°C	190	mW
Storage Temperature	Tstg		55 to +150	°C

VSS is the reference voltage potential for all pins.
*1: When the voltage doubler is used.
*2: When the voltage tripler is used.


Description

The ML9090A-01 and ML9090A-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 data RAM of ML9090A-01 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 m aximum of 80 × 18 dots (80 × 10 dots for the ML9090A-01, 80 × 18 dots for the ML9090A-02).

Since containing voltage multipliers, the ML9090A-01 and ML9090A-02 require no power supply circuit to drive the LCD.

Since the internal 5 × 5 scan circuit of ML9090A-01 has eliminated the needs of key scanning by the CPU, the ports of the CPU can be efficiently used.