HD61203U Datasheet, PDF (7/30 Pages) Hitachi Semiconductor – (Dot Matrix Liquid Crystal Graphic Display 64-Channel Common Driver)

HD61203U
Block Functions
Oscillator
The CR oscillator generates display timing signals and operating clocks for the HD61202U. It is required
when the HD61203U is used with the HD61202U. An oscillation resister Rf and an oscillation capacitor Cf
are attached as shown in Figure 1. When using an external clock, input the clock into terminal CR and
don’t connect any lines to terminals R and C.
The oscillator is not required when the HD61203U is used with the HD61830. Then, connect terminal CR
to the high level and don’t connect any lines to terminals R and C (Figure 2).
R
CR
C
R
CR
C
Rf
Cf
Open External Open
clock
Figure 1 Oscillator Connection with HD61202U
R
CR
C
Open
V_CC Open
Figure 2 Oscillator Connection with HD61830
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