HD66750 Datasheet, PDF (89/96 Pages) Hitachi Semiconductor – 128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions

HD66750/1
3. The TEST pin must be grounded and the IM1/0 and OPOFF pins must be grounded or connected to
Vcc.
4. Applies to the resistor value (RCOM) between power supply pins V1OUT, V2OUT, V5OUT, GND and
common signal pins, and resistor value (RSEG) between power supply pins V1OUT, V3OUT, V4OUT,
GND and segment signal pins.
5. This excludes the current flowing through output drive MOSs.
6. 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.
7. The following shows the relationship between the operation frequency (fosc) and current consumption
(Icc) (figure 57).
Vcc = 3V ^<T.B.D>
Vcc = 3 V, fosc = 70 kHz ^<T.B.D>
60
30
Display on (typ.)
40
Iop (µA)
20
20
Sleep (typ.) ^{ILCD (µA)}
10
Standby (typ.)
0
0 20 40 60 80 100
0
11.0
R-C oscillation frequencies: fosc (kHz)
typ.
13.0
15.0
17.0
LCD drive voltage: VLCD (V)
Figure 57 Relationship between the Operation Frequency and Current Consumption
8. Each COM and SEG output voltage is within ±0.15 V of the LCD voltage (Vcc, V1, V2, V3, V4, V5)
when there is no load.
9. Applies to the external clock input (figure 58).
2 kΩ
Oscillator
Open
OSC1
OSC2
0.7Vcc
0.5Vcc
0.3Vcc
Th
Tl
t _rcp
tfcp
Figure 58 External Clock Supply
Duty = ^Th x 100%
Th + Tl
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