參數資料
型號: SSD1854
廠商: Electronic Theatre Controls, Inc.
英文描述: LCD Segment / Common Driver with Controller CMOS
中文描述: LCD段/與普通的CMOS驅動器控制器
文件頁數: 39/48頁
文件大?。?/td> 771K
代理商: SSD1854
SSD1854
Series
Rev 1.0
08/2002
SOLOMON
34
11 AC CHARACTERISTICS
Table 11 - AC Characteristics
(Unless otherwise specified, Voltage Referenced to V
SS
, V
DD,
V
CI
= 2.7V,
T
A
= -20 to 85
°
C)
Symbol
F
osc
Parameter
Test Condition
Oscillator Resistor = 680K
Min
-10
Typ
-
Max
+10
Unit
%
Variation of Oscillation Frequency
F
OSC
+
Frame Frequency =
MUX
)
PWM
(
×
where
F
osc
is the oscillation Frequency
PWM is the Pulse Width Modulation level
MUX is the multiplex ratio
Example 1:
F
osc =
120KHz; PWM = 9 level; MUX = 160
Frame Frequency = 75 Hz
Example 2:
F
osc =
120KHz; PWM = 15 level; MUX = 128
Frame Frequency = 58.6 Hz
Oscillation Frequency at different VDD
60.00
90.00
1
20.00
1
50.00
1
80.00
2
1
0.00
1
.8
2.
1
2.4
2.7
3
3.3
VDD (V)
O
470K
560K
680K
820K
1
000K
Figure 8 - Oscillation Frequency at different VDD at 25
°
C
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