參數(shù)資料
型號(hào): HD66760
廠商: Hitachi,Ltd.
英文描述: 104 X 80-dot Graphics LCD Controller/Driver for 256 Colors
中文描述: 104 × 80點(diǎn)圖形LCD控制器/驅(qū)動(dòng)器的256色
文件頁(yè)數(shù): 96/105頁(yè)
文件大?。?/td> 653K
代理商: HD66760
HD66760
96
10. Applies to the internal oscillator operations using external oscillation resistor Rf (figure 63 and table 40).
OSC1
OSC2
Rf
Since the oscillation frequency varies depending on the OSC1 and OSC2 pin
capacitance, the wiring length to these pins should be minimized.
Figure 63 Internal Oscillation
Table 40 External Resistance Value and R-C Oscillation Frequency (Referential Data)
External
Resistance (Rf)
R-C Oscillation Frequency: fosc (kHz)
Vcc = 2.2 V
Vcc = 3.0 V
Vcc = 3.6 V
91 k
110 k
130 k
160 k
200 k
240 k
330 k
470 k
283
337
359
243
287
304
212
249
263
180
209
220
151
173
181
131
148
155
101
113
117
76
84
86
11. The step-up characteristics test circuit is shown in figure 64.
(3 to 6-times step-up)
Vcc
1
μ
F
Vci
C1+
C1–
C2+
C2–
C3+
C3–
C4+
C4–
C5+
C5–
C6+
C6–
+
GND
VLOUT
V
LCD
1
μ
F
+
1
μ
F
1
μ
F
+
+
1
μ
F
+
1
μ
F
+
1
μ
F
+
Figure 64 Step-up Characteristics Test Circuit
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