參數(shù)資料
型號: ML87V3104TB
廠商: OKI ELECTRIC INDUSTRY CO LTD
元件分類: 顯示控制器
英文描述: 640 X 240 PIXELS CRT OR FLAT PNL GRPH DSPL CTLR, PQFP100
封裝: 14 X 14 MM, 0.50 MM PITCH, PLASTIC, TQFP-100
文件頁數(shù): 13/69頁
文件大?。?/td> 444K
代理商: ML87V3104TB
FEDL87V3104-03
OKI Semiconductor
ML87V3104
20/69
3.1.6 Calculation of the display frame rate
The frame rate (the frame frequency) is determined by the periods of the LCD panel driving signals LCP and FRP,
the clock frequency, and the LCD driving mode.
Frame rate = FXOSC/{(FRPCYC)
× (LCPCYC) × (TPX)}
Where,
FXOSC
: External input clock frequency,
FRPCYC : Period (in units of a line) of the FRP (frame pulse) signal,
LCPCYC : Period (in units of a pixel) of the LCP (line pulse) signal,
TPX : TPX = 3/4 in the case of a color STN type LCD and TPX = 1 in all other cases.
Example:
What is the input clock frequency for making the frame rate equal to 150 Hz in the case of a color
STN QVGA (320
× 240) type LCD panel?
FRPCYC = 240 + 2 = 242
LCPCYC = 320 + 40 = 360
FXOSC = 150
× 242 × 360 × 3/4 = 9.8 MHz
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