參數(shù)資料
型號: HD66727
廠商: Hitachi,Ltd.
英文描述: Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function(帶鍵掃描功能的圖形LCD控制器/驅動器)
中文描述: 低功耗點陣液晶顯示控制器/鍵掃描功能(帶鍵掃描功能的圖形液晶顯示控制器/驅動器驅動程序)
文件頁數(shù): 93/98頁
文件大?。?/td> 1576K
代理商: HD66727
HD66727
93
10.This excludes the current flowing through the input/output units. The input level must be fixed high or
low because through current increases if the CMOS input is left floating.
11.The following shows the relationship between the operation frequency (f
OSC
) and current consumption
(I
CC
) (Figure 52).
R-C oscillation frequencies: fosc (kHz)
40
30
20
10
0
I
μ
A
V
CC
= 3V
0 50 100 150 200 250
Display on (typ.)
Sleep mode (typ.)
Standby mode (typ.)
1/34
duty
1/26
duty
1/18
duty
1/10
duty
80
60
40
20
0
I
μ
A
V
CC
= 3V
3 4 5 6 7 8 9 10 11
LCD drive voltages: VLCD (V)
VREF-VREFP short-circuited
VREF left disconnected
VREF = VREFP = VREFM
VREF-VREFM
short-circuited
Figure 52 Relationship between the Operation Frequency and Current Consumption
12.Each COM and SEG output voltage is within
±
0.15V of the LCD voltage (V
CC
, V1, V2, V3, V4, V5)
when there is no load.
13.Applies to the external clock input (Figure 53).
Oscillator
OSC1
Open
OSC2
t
rcp
t
fcp
T
h
T
l
0.7V
CC
0.5V
CC
0.3V
CC
Duty =
T
h
+T
l
T
h
100%
X
Figure 53 External Clock Supply
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