ST
Sitronix
ST7669
262K 132
x
162 Color
Dot Matrix LCD Controller/Driver
1 INTRODUCTION
The ST7669 is a driver & controller LSI for 262K color graphic dot-matrix liquid crystal display systems. It generates 396
Segment and 162 Common driver circuits. This chip is connected directly to a microprocessor, accepts Serial Peripheral
Interface (SPI) or 8-bit/16-bit/18-bit parallel display data and stores in an on-chip display data RAM. It performs display
data RAM read/write operation with no external operating clock to minimize power consumption. In addition, because it
contains power supply circuits necessary to drive liquid crystal, it is possible to make a display system with the fewest
components.
2 FEATURES
Driver Output Circuits
♦
396 segment outputs / 162 common outputs
♦
3-line (9-bits) or 4-line( 8-bit) serial interface
On-chip Low Power Analog Circuit
♦
On-chip oscillator circuit
♦
Voltage converter (x1, x2, x3, x4, x5, x6, x7, x8) with
internal booster capacitors.
♦
Extremely Few Outsider Compoment. (Required
outsider components: Three Capacitors)
♦
On-chip Voltage Regulator
♦
On-chip electronic contrast control function
♦
Voltage follower
(LCD bias: 1/5,1/7,1/9,1/10,/11,1/12, 1/13, 1/14)
Applicable Duty Ratios
♦
Various partial display
♦
Partial window moving & data scrolling
Gray-Scale Display
♦
4FRC & 31 PWM function circuit to display 64
gray-scale display
♦
Support 8 color mode (Idle mode)
On-chip Display Data RAM
♦
Capacity: 132 x 162 x 18 =384,912 bits
Operating Voltage Range
♦
Supply Digital Voltage (VDD): 1.65 to 3.0V
♦
Supply Analog Voltage
(VDD2, VDD3, VDD4, VDD5):
2.4 to 3.3V
♦
LCD driving voltage (VOP = V0 - VSS): Max: 18V
Color support by Inteface
♦
256 color mode(RGB)=(332) mode (via LUT)
♦
4K colors (RGB)=(444) mode (via LUT)
♦
65K colors (RGB)=(565) mode
♦
262K colors (RGB)=(666) mode
♦
Truncated 16M colors (RGB)=(888) mode
LCD Driving Voltage (OTP)
♦
Contrast Adjustment Value is stored in the Built-In
OTP-ROM for better display quility.
LCD Driving
setting suggestion
♦
Vop=16.52, Bias=1/10
Package Type
♦
Application for COG
Microprocessor Interface
♦
8/16/18-bit parallel bi-directional interface with
6800-series or 8080-series
ST7669
6800 , 8080 ,4-Line , 3-Line interface
Sitronix Technology Corp. reserves the right to change the contents in this document without prior notice.
Ver 1.3a
1/216
09/26/2007
SITRONIX [ SITRONIX TECHNOLOGY CO., LTD. ]
