HD66760 Datasheet, PDF (95/105 Pages) Hitachi Semiconductor – 104 X 80-dot Graphics LCD Controller/Driver for 256 Colors

HD66760
3. The TEST, VSW1, and VSW2 pins must be grounded and the IM2-0 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. Even if the CS pin is low or
high when an access with the interface pin is not performed, current consumption does not change.
7. The following shows the relationship between the operation frequency (fosc) and current consumption
(Icc) (figure 61).
Vcc = 3 V
400
Vcc = 3 V, fosc = 173 kHz
40
300
30
200
20
100
0
100 150 200 250 300 350
R-C oscillation frequencies: fosc (kHz)
10
0
8.0
10.0
12.0
14.0
LCD drive voltage: VLCD (V)
Figure 61 Relationship between the Operation Frequency and Current Consumption
8. Each COM and SEG output voltage is within Å}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 62).
2 kΩ
Oscillator
Open
OSC1
OSC2
0.7Vcc
0.5Vcc
0.3Vcc
Th
Tl
t _rcp
tfcp
Figure 62 External Clock Supply
Duty = ^Th _{x 100%}
Th + Tl