12-Character 1-Line Dot Matrix LCD Controller Driver with Smooth Scroll
Manufacturer's part number :
The NJU6624A is a Dot Matrix LCD controller driver for 12-character 1-line with icon display in single chip.
It contains bleeder resistance, general output port, keyscan circuit, CR oscillator, microprocessor interface circuit, instruction decoder controller, character generator ROM/RAM, high voltage operation common and segment drivers, and others.
The character generator ROM consisting of 7,840 bits stores 224 kinds of character Font. Each 1,120 bits CG RAM and Icon display RAM can store 32 kinds of special character displayed on the dot matrix display area or 60 kinds of Icon on the Icon display area.
The 8-common (7 for character, 1 for icon) and 71-segment drivers operate 12-character 1-line with 60 Icon LCD display and LED driver drives 4 LED which can use like as indicator.
The 16th display contrast control function is incorporated. Therefore, the contrast adjustment is operated easily by only simple power supply circuit on-chip.
The complete CR oscillator requires no external components. The serial interface which operates by 1MHz, communicates with external MCU.
As an outstanding feature, NJU6624A/B realizes the horizontal smooth scroll of characters by combination of instructions.
The combination of NJU6624A as the Master and NJU6624B as the slave drive the 12-character and 2-line LCD panel or 24-character 1--line in 1/8 duty.
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Technical Data :
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- 12-character 1-line Dot Matrix LCD Controller Driver
- Maximum 60 Icon Display
- Serial Direct Interface with Microprocessor
- Display Data RAM - 14 x 8 bits : Maximum 12-character 1-line Display
- Character Generator ROM - 7,840 bits : 224 Characters for 5 x 7 Dots
- Character Generator RAM - 1,120 bits : 32 Patterns( 5 x 7 Dots )
- Icon Display RAM - Maximum 60 Icons
- High Voltage LCD Driver : 8-common / 71-segment
- Duty and Bias Ratio : 1/8 duty, 1/4 bias
- Master/Slave Function :NJU6624A : Master, NJU6624B : Slave
- Useful Instruction Set : Clear Display, Address Home, Display ON/OFF Cont., Display Blink, Address Shift, Character Shift, Dot shift, Keyscan ON/OFF Cont. etc.
- 32Key Input (4x8 keyscan)
- General output port (4 ports)
- Power On Initialization / Hardware Reset
- Bleeder Resistance on-chip
- Software contrast control(16 step)
- Oscillation Circuit on-chip
- Low Power Consumption
- n Operating Voltage (2.4 to 5.5 V)
- Package Outline (QFP 100)
- C-MOS Technology