ST
Sitronix
1. INTRODUCTION
2
ST7545T
66 x 102 Dot Matrix LCD Controller/Driver
The ST7545T is a driver & controller LSI for graphic dot-matrix liquid crystal display systems. It contains 102 segments
and 65 commons with 1 ICON driver circuits. This chip is connected directly to a microprocessor, accepts 8-bit parallel
interface、3-line or 4-line serial peripheral interface (SPI)、I C interface, display data can stores in an on-chip display
data RAM 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 x 65-common + 1 ICON
On-chip Display Data ram
-
Capacity: 66X102=6,732 bits
-
-
-
-
Generation of intermediate LCD bias voltages
Oscillator requires no external components
(external clock also supported)
Voltage Booster (x4, x5)
Voltage regulator(temperature gradient
-0.11%/
°C
)
-
-
Voltage follower
On-chip electronic contrast control function (128
steps)
External RESB (reset) pin
Supply voltage range
-
-
-
V
DD1
-V
SS
: 1.7 to 3.3V
V
DD2
-V
SS
: 2.4 to 3.3V
V
OUTIN
-V
SS
: 13.5V (max)
Microprocessor Interface
-
8-bit parallel bi-directional interface with
6800-series or 8080-series
-
4-line SPI (serial peripheral interface) available
(only write operation)
-
-
3-line SPI (serial peripheral interface) available
I C (Inter-Integrated Circuit) Interface
2
On-chip Low Power Analog Circuit
-
Generation of LCD supply voltage (external V
OUT
voltage supply is supported)
Temperature range: -30 to +85 degree
ST7545T-G2
6800 , 8080 ,
4-Line , 3-Line interface
(without I
2
C interface)
I
2
C interface
ST7545Ti-G2
Ver 1.5
1/48
2006/01/20
SITRONIX [ SITRONIX TECHNOLOGY CO., LTD. ]
