NJU6624B

Features:

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. e.t.c.
32Key Input (4x8 keyscan)
 General output port (4 ports)
eneral n Power On Initialization / Hardware Reset
Bleeder Resistance on-chip
Software contrast control(16 step)
Oscillation Circuit on-chip
Low Power Consumption
Operating Voltage --- 2.4 to 5.5 V
Package Outline --- QFP 100
C-MOS Technology

Pinout




Specifications

P A R A M E T E R	SYMBOL	R A T I N G S	UNIT	NOTE
Supply Voltage(1)	V D D	-0.3 to +7.0	V
Supply Voltage(2)	V L C D 1	V S S + 1 0 . 5 t o V S S + 0 . 3	V	V L C D 1 T e r m i n a l
Input Voltage	V IN	-0.3 to VDD+0.3	V
Operating Temperature	Topr	- 4 0 t o + 8 5	oC
Storage Temperature	Tstg	- 5 5 t o + 1 2 5	oC
P o w e r D i s s i p a t i o n	P D	500	m W

Description

The NJU6624A/B is a Dot Matrix LCD controller driver for 12-character 1-line with icon display in single chip.
NJU6624B contains bleeder resistance, general output port, keyscan circuit, CR oscillator, microprocessor interface circuit, instruction decoder con- controller, character generator ROM/RAM, high voltage operation com- troller, common and segment drivers, and others.
 The character of NJU6624B 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 of NJU6624B 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 sup- supply circuit on-chip.
The complete CR oscillator of NJU6624B requires no external components.
The serial interface which operates by 1MHz, communicates with ex- external MCU.
As an outstanding feature, NJU6624A/B realizes the horizontal smooth scroll of characters by combination ofinstr-uctions.
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.