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Sitronix Technology

ST7556 Datasheet Preview

ST7556 Datasheet

65 x 102 Dot Matrix LCD Controller/Driver

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ST
Sitronix
ST7556
65 x 102 Dot Matrix LCD Controller/Driver
1. INTRODUCTION
The ST7556 is a driver & controller LSI for graphic dot-matrix liquid crystal display systems. It contains 102 segment
and 65 common with 1 ICOM driver circuits. This chip is connected directly to a microprocessor, accepts 4-line serial
interface (SPI) or 8-bit parallel interface, display data can store 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
Driver Output Circuits
(external clock also possible)
102 segment outputs / 65+1 common outputs
- Voltage converter (x4)
On-chip Display Data ram
- Voltage regulator (temperature gradient
- Capacity: 66X102=6,732 bits
-0.05%/°C)
Microprocessor Interface
- Voltage follower
- 8-bit parallel bi-directional interface with
- On-chip electronic contrast control function (128
6800-series or 8080-series
steps)
- 4-line SPI (serial peripheral interface) available
- Liquid crystal driving voltage :
(only write operation)
V0 -VSS = max 12 V (external power supply)
On-chip Low Power Analog Circuit
- Generation of LCD supply voltage (externally
External RESB (reset) pin
Vout voltage supply is possible)
Logic supply voltage range VDD -VSS
- Generation of intermediate LCD bias voltages
- 1.8 to 3.3V
Temperature range: -30 to +85 degree
- Oscillator requires no external components
www.DataSheet4U.com
Ver 2.2
1/43
2005/10/05




Sitronix Technology

ST7556 Datasheet Preview

ST7556 Datasheet

65 x 102 Dot Matrix LCD Controller/Driver

No Preview Available !

ST7556
3. PAD Arrangement (COG)
Chip Size: 10,310 um × 1,150 um
Bump Pitch:
PAD NO 1 ~ 148 , 250 ~ 272 : 75.5 um (com/seg) PAD NO 149 ~ 248 : 75 um (I/O) PAD NO 148 ~ 149 : 114 um
PAD NO 248 ~ 249 : 93.5 um (Reset) PAD NO 249 ~ 250 : 95.9 um (Reset)
Bump Size:
PAD NO 1 ~ 125 , 137 ~ 248 , 250 ~ 261 : 55(x) um 60(y) um PAD NO 249 : 92(x) um 60(y) um
PAD NO 126 ~ 136 , 262 ~ 272 : 60(x)um 55(y) um
Bump Height: 17 um
Chip Thickness: 635 um
www.DataSheet4U.com
Ver 2.2
2/43
2005/10/05


Part Number ST7556
Description 65 x 102 Dot Matrix LCD Controller/Driver
Maker Sitronix Technology
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ST7556 Datasheet PDF






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