Sitronix
1. INTRODUCTION
ST7575
66 x 102 Dot Matrix LCD Controller/Driver
ST7575 is a driver & controller LSI for graphic dot-matrix liquid crystal display systems. It contains 102-segment and
65-common with 1-icon-common driver circuits. This chip is connected directly to a microprocessor which accepts 3-line
or 4-line serial peripheral interface (SPI) or 8-bit parallel interface. Display data stores in an on-chip display data RAM
(DDRAM) of 66 x 102 bits. 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 to drive liquid crystal, it is possible to make a
display system with the fewest components.
2. FEATURES
Single-chip LCD Controller & Driver
Driver Output Circuits
102-segment / 65-common+1-icon-common (1/66 duty)
On-chip Display Data Ram
-
Capacity: 66X102= 6,732 bits
-
-
interface
supports
Low Power Consumption Analog Circuit
-
-
Voltage booster (X4, X5)
Voltage regulator generates LCD operating voltage
(Temperature Gradient: -0.11%/°C)
Electronic contrast control (128 steps)
Voltage follower generates LCD bias voltages
(1/4 ~ 1/11 bias)
Wide supply voltage range
-
-
VDD1
–
VSS1 : 1.8 ~ 3.3V
VDD2
–
VSS2 : 2.4 ~ 3.3V
Microprocessor Interface
-
8-bit
parallel
bi-directional
6800-series or 8080-series MPU
-
3-line & 4-line SPI (serial peripheral interface) are
available (write only)
External RESB (reset) pin
Built-in oscillation circuit
-
Oscillator requires no external component
Display supply voltage range
-
-
Application Vop range : 8V ~ 9.5V
Programmable voltage (Vop) : 10.56V (max)
°
Temperature range: -30 to +85 C
Support LCD Module Size up to 1.8”
ST7575
6800 , 8080 , 4-Line , 3-Line interface
Sitronix Technology Corp. reserves the right to change the contents in this document without prior notice.
Ver 1.3
1/51
2007/09/12
SITRONIX [ SITRONIX TECHNOLOGY CO., LTD. ]
