Sitronix
1. INTRODUCTION
ST7585
66 x 102 Dot Matrix LCD Controller/Driver
ST7585 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
-
-
Low Power Consumption Analog Circuit
-
-
Voltage booster (X5)
Voltage regulator generates LCD operating voltage
(Temperature Gradient: -0.05%/°C)
Electronic contrast control (32 steps)
Voltage follower generates LCD bias voltages
(1/7 and 1/9 bias)
Wide Supply Voltage Range
-
-
VDD1
–
VSS1 : 1.8V ~ 3.3V (covers 1.7V~3.4V)
VDD2
–
VSS2 : 2.7V ~ 3.3V (covers 2.6V~3.4V)
Microprocessor Interface
-
8-bit parallel bi-directional interface for 6800-series
or 8080-series MPU
-
3-line & 4-line SPI (serial peripheral interface) are
available (write only)
-
Compatible with I C interface
2
Recommend Display Supply Voltage
-
Vop: 8.5V ~ 9.5V (1/9 bias)
External RESB (reset) Pin
Built-in Oscillation Circuit
-
Oscillator requires no external component
LCD Module Size: 1.4” (up to 1.8”)
Temperature Range: -30°C ~ +85°C
Built-in OTP (One-Time Programmable) Function
ST7585
ST7585i
6800 , 8080 , 4-Line , 3-Line interface
I
2
C interface
Sitronix Technology Corp. reserves the right to change the contents in this document without prior notice.
Ver 1.0c
1/51
2009/04/14
SITRONIX [ SITRONIX TECHNOLOGY CO., LTD. ]
