S6B0741 Ver la hoja de datos (PDF) - Samsung
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Fabricante
S6B0741 Datasheet PDF : 74 Pages
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S6B0741
128 SEG / 129 COM DRIVER & CONTROLLER FOR STN LCD
INTRODUCTION
The S6B0741 is a driver & controller LSI for 4-level gray scale graphic dot-matrix liquid crystal display systems. It
contains 128 segment and 129 common driver circuits. This chip is connected directly to a microprocessor, accepts
Serial Peripheral Interface (SPI) or 8-bit parallel display data and stores in an on-chip display data RAM of 128 x 129
x 2 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 necessary to drive liquid crystal, it is possible to
make a display system with the fewest components.
FEATURES
4-level (White, Light Gray, Dark Gray, Black) Gray Scale Display with PWM and FRC Methods
DDRAM data [2n: 2n+1]
00
01
Gray scale
White
Light gray
(Accessible column address, n = 0, 1, 2, ……, 125, 126, 127)
10
Dark gray
11
Dark
Driver Output Circuits
− 128 segment outputs / 129 common outputs
Applicable Duty Ratios
Duty ratio
1/16 ~ 1/128 (ICON disabled)
1/17 ~ 1/129 (ICON enabled)
Applicable LCD bias
1/5 to 1/12
− Various partial display
− Partial window moving & data scrolling
On-chip Display Data RAM
− Capacity: 129 × 128 × 2 = 33,024bits
Microprocessor Interface
− 8-bit parallel bi-directional interface with 6800-series or 8080-series
− SPI (serial peripheral interface) available (only write operation)
On-chip Low Power Analog Circuit
− On-chip oscillator circuit
− Voltage converter (x3, x4, ×5 or x6)
− Voltage regulator (temperature coefficient: -0.125%/°C, or external input)
− On-chip electronic contrast control function (64 steps)
− Voltage follower (LCD bias : 1/5 to 1/12)
Operating Voltage Range
− Supply voltage (VDD): 1.8 to 3.3V
− LCD driving voltage (VLCD = V0 - VSS): 4.0 to 15.0 V
Maximum display area
129 × 128
1
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