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參數(shù)資料
| 型號： | MXED202 |
| 廠商： | CLARE INC |
| 元件分類： | 顯示驅(qū)動器 |
| 英文描述： | 128-Channel OLED Row Driver |
| 中文描述： | LED DISPLAY DRIVER, UUC149 |
| 封裝： | GOLD BUMP, DIE-149 |
| 文件頁數(shù)： | 2/16頁 |
| 文件大小： | 560K |
| 代理商： | MXED202 |
www.clare.com
2
MXED202
Rev. 2
Overview
A row-scan token bit is passed along the length of MXED202 shift register to successively activate the row switch-
es. The OLED cathodes of the active row(s) are switched to RTN, a low impedance return, ground or 0V typically,
while the companion column drivers source data-driven currents through each OLED to be illuminated. Inactive rows
are connected to a programmable "Off" (or Precharge) voltage to ensure the OLED's are not forward-biased. A pro-
grammable precharge interval and programmable precharge voltage are available to set initial conditions for the next
active row(s).
In normal, or single token mode, the token may be entered at either end of the MXED202 row shift register (SRIN
or SLIN), depending on the shift direction selection Shift Right (SHR). The token is shifted one row (one channel)
per clock cycle, CLK. One row maximum is active at a time. In dual mode (DUAL), the token is entered at one end
and automatically in the center, and again the tokens may be selectively shifted left or right at the CLK rate; two rows
maximum are active at a time. The MXED202 has options for 128- and 120-row display panels. When the Select
128 (S128) pin is tied low, the token is also automatically entered at the fifth cell from the entry direction end; only
the 120 middle outputs, Rows 4 through 123, should be used. Note that a lesser number of rows may be used by
resetting the MXED202 (RSTB) at any time, truncating the shift cycle.
Overview of Operation
A row-scan token bit is passed along the length of MXED202 shift register to successively activate the row switch-
es. The OLED cathodes of the active row(s) are switched to RTN, a low impedance return, ground or 0V typically,
while the companion column drivers source data-driven currents through each OLED to be illuminated. Three suc-
cessive row activations, N-1, N, N+1, are depicted in the simplified timing diagram below. Inactive rows are con-
nected to a programmable "Off" (or Precharge) voltage to ensure the OLED's are not forward-biased. A
programmable precharge interval and programmable precharge voltage are available to set initial conditions for the
next active row(s). Precharge is described on page 9.
PRELIMINARY ELECTRICAL DATA SHEET
The MXED202 is a row-multiplexed display driver, for Passive Matrix Organic Light Emitting Diode (OLED) and
Polymer Light Emitting Diode arrays (PLED, PolyLED, LEP, . . .), with anodes connected to current-sourcing column
data drivers. The common cathode rows (channels) of the display matrix are activated by sequentially switching
them to a low impedance voltage source (ground/0V, typically) in synchronism with the digital data column current
drive. The MXED202 supports precharging options to improve luminance control. It is manufactured in a high volt-
age (30 V) CMOS process and provided in bumped die and TCP (Tape Carrier Package) form.
Preliminary
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