Products>LCD Driver for Mobile Phone>ST7636R
ST7636R
65K Color Dot Matrix LCD Controller/Driver

Product Description

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.

Features
  • Driver Output Circuits
    -396 segment outputs / 132 common outputs
  • Applicable Duty Ratios
    -Various partial display
    -Partial window moving & data scrolling
  • 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
  • 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
    -On-chip oscillator circuit
    -Voltage converter (x2, x3, x4, x5, x6, x7, x8)
    -Voltage regulator (temperature gradient -0.15%/C)
    -On-chip electronic contrast control function (406 steps)
    -Voltage follower (LCD bias: 1/5 to 1/12)
  • 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
  • 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.104)
  • Package Type
    -Application for COG

Downloads

File Size Version Creation Date
Datasheet1350KV1.42006/09/07