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ST7636R

Sitronix Technology
Part Number ST7636R
Manufacturer Sitronix Technology
Description 65K Color Dot Matrix LCD Controller/Driver
Published Mar 31, 2011
Detailed Description ST Sitronix 1. INTRODUCTION ST7636R 65K Color Dot Matrix LCD Controller/Driver The ST7636R is a driver & controller L...
Datasheet PDF File ST7636R PDF File

ST7636R
ST7636R

Overview
ST Sitronix 1.
INTRODUCTION ST7636R 65K Color Dot Matrix LCD Controller/Driver The ST7636R is a driver & controller LSI for 65K color graphic dot-matrix liquid crystal display systems.
It generates 396 Segment and 132 Common driver circuits.
This chip is connected directly to a microprocessor, accepts Serial Peripheral Interface (SPI) or 8-bit/16-bit parallel 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 ♦ 396 segment outputs / 132 common outputs ♦ Voltage regulator (temperature gradient -0.
15%/¢J ) ♦ On-chip electronic contrast control function (406 steps) ♦ Voltage follower (LCD bias: 1/5 to 1/12) Applicable Duty Ratios ♦ Various partial display ♦ Partial window moving & data scrolling Operating Voltage Range ♦ Supply voltage (VDD, VDD1): 1.
8 to 3.
3V (VDD2, VDD3, VDD4, VDD5): 2.
4 to 3.
3V ♦ LCD driving voltage (VOP = V0 - VSS): 3.
76 to 18.
0 V ♦ The suggested value of V0 is 12~15 V under bias =1/11 or 1/12 Gray-Scale Display ♦ 4FRC & 31 PWM function circuit to display ♦ 64 gray-scale display.
On-chip Display Data RAM ♦ Capacity: 132 x 132 x 16 =278,784bits ♦ 4K colors (RGB)=(444) mode ♦ 65K colors (RGB)=(565) mode ♦ Truncated 262K colors (RGB)=(666) mode ♦ Truncated 16M colors (RGB)=(888) mode LCD Driving Voltage (EEPROM) ♦ To store contrast adjustment value for better display ♦ To store adjustment value for best crosstalk performance EEPROM Adjustment Voltage ♦ When writing value to EEPROM, VDD2~VDD5 must follow as: When Booster x6: VDD2~VDD5 =3.
3V When Booster x7: VDD2~VDD5 =2.
8V~3.
0V and Booster:ON, Regulator: OFF, Follower: OFF, Display OFF (refer EEPROM flow, page.
43 , page.
105) Microprocessor Interface ♦ 8/16-bit parallel bi-directional ...


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