ST
Sitronix
1. INTRODUCTION
ST7529
32 Gray Scale
Dot Matrix LCD Controller/Driver
The ST7529 is a driver & controller LSI for 32 gray scale graphic dot-matrix liquid crystal display systems. It generates 255
Segment and 160 Common driver circuits. This chip is connected directly to a microprocessor, accepts Serial Peripheral
Interface (SPI), 8-bit/16-bit parallel or IIC 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
−255
segment outputs / 160 common outputs
−Maximum
resolution is 255 x 160
On-chip Low Power Analog Circuit
−
On-chip oscillator circuit
−
Voltage converter (x2, x3, x4, x5, x6, x7, x8)
−
Voltage regulator
−
Voltage follower
(LCD bias: 1/5, 1/7, 1/9, 1/10, 1/11, 1/12, 1/13, 1/14)
Applicable Duty Ratios
−
Various partial display
−
Partial window moving & data scrolling
Microprocessor Interface
−
8/16-bit parallel bi-directional interface with 6800-series
or 8080-series
−4-line
serial interface (write only)
−9
bit 3-line serial interface (write only)
Operating Voltage Range
−
Supply voltage
(VDD, VDD1, VDD2, VDD3, VDD4, VDD5): 2.4 to 3.3V
−
LCD driving voltage (VLCD = V0 - VSS): 3.76 to 18.0V
Temperature Gradient Coefficient
−
-0.130%/℃
On-chip Display Data RAM
−
Capacity : 160 x 255 x 5bit = 204000bits (Max)
LCD driving voltage (EEPROM)
−
To store contrast adjustment value for better display
Package Type
−
Application for COG and TCP
ST7529
6800, 8080, 4-Line, 3-Line interface
Ver 1.8
1/85
2007/10/25
SITRONIX [ SITRONIX TECHNOLOGY CO., LTD. ]
