參數(shù)資料
型號(hào): HD66705U
廠商: Hitachi,Ltd.
英文描述: Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver(圖形LCD控制器/驅(qū)動(dòng)器)
中文描述: 低功耗點(diǎn)陣液晶顯示控制器/驅(qū)動(dòng)器(圖形液晶顯示控制器/驅(qū)動(dòng)器)
文件頁(yè)數(shù): 75/81頁(yè)
文件大?。?/td> 426K
代理商: HD66705U
HD66705U
75
6. The TEST pin must be grounded.
7. The ID5 to ID0, IM1, IM0, SFT, EXM, and OPOFF pins must be grounded or connected to V
CC
.
8. Applies to resistor values (RCOM) between power supply pins V
CC
, V1OUT, V4OUT, V5OUT and
common signal pins (COM1 to COM16, COMS1, and COMS2), and resistor values (RSEG) 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 47).
V
CC
= 3V
40
30
20
I
C
10
00
50
100 150
CR oscillator frequency
200
250
1/10
duty
1/18
duty
Display on (typ.)
Sleep (typ.)
Standby (typ.)
V
CC
= 3V
40
30
20
I
E
10
03
4
5
6
LCD drive voltage : V
LCD
=V
cc -
V
EE (V)
7
9
10
8
VREF=VREFP Short-circuited
VREF left disconnected
VREF–VREFM
Short-circuited
VREF=VREFP=VRERM
Short-circuited
5.5
15
85
Figure 47 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 48).
Oscillator
OSC1
Open
OSC2
t
rcp
t
fcp
Th
Tl
0.7V
CC
0.5V
CC
0.3V
CC
Duty =
Th+Tl
Th
100%
X
Figure 48 External Clock Supply
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