ST7636R 参数 Datasheet PDF下载

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%/℃)

♦

On-chip electronic contrast control function (406 steps)

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Voltage follower (LCD bias: 1/5 to 1/12)

Applicable Duty Ratios

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Various partial display

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Partial window moving & data scrolling

Operating Voltage Range

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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

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4FRC & 31 PWM function circuit to display

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64 gray-scale display.

On-chip Display Data RAM

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Capacity: 132 x 132 x 16 =278,784bits

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4K colors (RGB)=(444) mode

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65K colors (RGB)=(565) mode

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Truncated 262K colors (RGB)=(666) mode

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Truncated 16M colors (RGB)=(888) mode

LCD Driving Voltage (EEPROM)

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To store contrast adjustment value for better display

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To store adjustment value for best crosstalk

performance

EEPROM Adjustment Voltage

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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 interface with 6800-series

or 8080-series

♦

4-line serial interface (4-line-SIF)

♦

3-line serial interface (3-line-SIF)

On-chip Low Power Analog Circuit

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On-chip oscillator circuit

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Voltage converter (x2, x3, x4, x5, x6, x7, x8)

Package Type

♦

Application for COG

ST7636R

Ver 1.4

6800 , 8080 ,4-Line , 3-Line interface

1/109

2006/09/06