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參數(shù)資料
| 型號： | HD66727A04TA0L |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function |
| 中文描述： | 低功耗點陣液晶顯示控制器/鍵掃描功能驅(qū)動程序 |
| 文件頁數(shù)： | 92/97頁 |
| 文件大?。?/td> | 513K |
| 代理商： | HD66727A04TA0L |
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HD66727
92
8. Applies to resistor values (R
COM
) between power supply pins V
CC
, V1OUT, V4OUT, V5OUT and
common signal pins (COM1 to COM32, COMS1, and COMS2), and resistor values (R
SEG
) between
power supply pins V
CC
, V2OUT, V3OUT, V5OUT and segment signal pins (SEG1 to SEG60).
9. This excludes the current flowing through pull-up MOSs and output drive MOSs.
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
short-circuited
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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