HD66740 Datasheet, PDF (82/95 Pages) Hitachi Semiconductor – 112 x 80-dot Graphics LCD Controller/Driver

HD66740
3. The TEST pin must be grounded and the IM2/1, IM0/ID, and OPOFF pins must be grounded or
connected to Vcc.
4. Corresponds to the high output for clock-synchronized serial interface.
5. 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, when current Id is flown through all driver output pins.
6. This excludes the current flowing through pull-up MOSs and output drive MOSs.
7. 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.
8. The following shows the relationship between the operation frequency (fosc) and current
consumption (Icc) (figure 42).
Vcc = 3 V
Vcc = 3 V, fosc = 86 kHz
60
30
Display on (typ.)
40
Iop (µA)
20
Sleep (typ.)
20
ILCD (µA)
10
Standby (typ.)
0
0 20 40 60 80 100
0
8.0
R-C oscillation frequencies: fosc (kHz)
typ.
10.0
12.0
14.0
LCD drive voltage: VLCD (V)
Figure 42 Relationship between the Operation Frequency and Current Consumption
9. 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.
10. Applies to the external clock input (figure 43).
1.5k to 2k
Oscillator
Open
OSC1
OSC2
0.7Vcc
0.5Vcc
0.3Vcc
Th
Tl
trcp
t _fcp
Figure 43 External Clock Supply
Th
Duty =
×100
Th+Tl
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