Features: · 4,096-color STN LCD driver
· Built-in LCD Drivers : 40 common Drivers x 128RGB Drivers (384-segment Drivers in B&W)
· Built-in Display Data RAM (DDRAM) : 61,440 bits for Graphic Display
· Programmable Display Mode
- Variable 16-grayscale Mode : 4,096 Colors
- Variable 8-grayscale Mode : 256 Colors
- Fixed 8-grayscale Mode : 256 Colors
- B&W Mode : Black & White
· 8-/16-bit Parallel Interface Selectable
· 8-/16-bit Bus Length for Display Data Selectable
· 3-/4-line Serial Interface Selectable
· Programmable Duty Ratio and Bias Ratio
· Programmable Internal Voltage Booster : Maximum 5 times
· Programmable Contrast Control : 128-step Electrical Variable Resistor (EVR)
· Various Useful Instructions
· Low Operating Current : 450uA Typical at VDD=3V, 4-time Boost, Checker Flag Display
· Low Logic Voltage : 1.7V to 3.3V
· Wide LCD Voltage Range : 5.0V to 18.0V
· C-MOS Technology
· Slim Chip for COG
· Package : Bump Chip / TCPSpecifications
| PARAMETER |
SYMBOL |
CONDITION |
TERMINAL |
RATING |
UNIT |
| Supply Voltage (1) |
VDD |
VSS=0V
VSSH=0V
Ta = +25°C |
VDD |
-0.3 to +4.0 |
V |
| Supply Voltage (2) |
VEE |
VEE |
-0.3 to +4.0 |
V |
| Supply Voltage (3) |
VOUT |
VOUT |
-0.3 to +19.0 |
V |
| Supply Voltage (4) |
VREG |
VREG |
-0.3 to +19.0 |
V |
| Supply Voltage (5) |
VLCD |
VLCD |
-0.3 to +19.0 |
V |
| Supply Voltage (6) |
V1, V2, V3, V4 |
V1, V2, V3, V4 |
-0.3 to VLCD + 0.3 |
V |
| Input Voltage |
VI |
*1 |
-0.3 to VDD + 0.3 |
V |
| Storage Temperature |
Tstg |
|
|
-45 to +125 |
°C |
NOTE1) D0 to D15, CSb, RS, RDb, WRb, OSC1, RESb, TEST1, and TEST2
NOTE2) To stabilize the LSI operation, place decoupling capacitors between VDD and VSS and between VEE and VSSH.
DescriptionThe NJU6820 is a 40COMMON x 128RGB LCD driver for 4,096-color STN display. NJU6820 contains common drivers, RGB drivers, a serial and a parallel MPU interface circuit, an internal LCD power supply, grayscale palettes and 61,440-bit display data RAM. The segment drivers for RGB (Red, Green, Blue) independently produce optimum 16 grayscales from a built-in 32-grayscale palette, and the LSI achieves 4,096 colors (16x16x16).
In addition, the NJU6820 operates with a low voltage of 1.7V and a low operating current, therefore it is ideally suited for battery-powered handheld applications.
NJU6820 Data Sheet
