hd66717 Renesas Electronics Corporation., hd66717 Datasheet - Page 10

• Manufacturer Part Number: hd66717
• Description: Low-power Dot-matrix Liquid Crystal Display Controller/driver -
• Manufacturer: Renesas Electronics Corporation.

Table 1
Signal
COM1 to
COM32
SEG1 to
SEG60
ACOM
ASEG1 to
ASEG10
V2/V3
V1OUT to
V5OUT
VREFP,
VREF,
VREFM
V
V
AGND
OSC1/
OSC2
EE
CC
/GND
Number
of Pins
32
60
1
10
5
3
2
10
2
2
2
Pin Functional Description (cont)
I/O
O
O
O
O
I
I or O —
I
—
—
—
—
Device
Interfaced with Function
LCD
LCD
LCD
LCD
Open or
Short-circuited
Open or
Short-circuited
Power supply
Power supply
Power supply
Oscillation
resistor/clock
Common output signals for character display: COM1 to
COM8 for the first line, COM9 to COM16 for the second
line, COM17 to COM24 for the third line, and COM25 to
COM32 for the fourth line. All the unused pins output
deselection waveforms. During sleep mode (SLP= 1) or
standby mode (STB = 1), all pins output V
Segment output signals for segment icon display and
character display. During sleep mode (SLP = 1) or standby
mode (STB = 1), all pins output V
Common output signal for annunciator display; can drive
display statically between V
V
Segment output signals for annunciator display; can drive
display statically between V
level while annunciator display is turned off (DA = 0).
V2/V3 are voltage levels for the internal operational
amplifiers; can drive LCD with 1/4 bias when V2 and V3
are short-circuited and with 1/6 bias when they are left
disconnected.
Used for output from the internal operational amplifiers
when they are used (OPOFF = GND); when amplifiers'
driving capability is insufficient, attach a capacitor to
stabilize the output. Especially these capacitors for V1OUT
and V4OUT must be attached in 1/26 duty and 1/34 duty.
When the amplifiers are not used (OPOFF = V
voltages can be supplied to these pins externally.
Adjusts the driving capability of the internal operational
amplifiers according to the LCD power supply voltage.
LCD Power Supply
Voltage (V
V
V
V
V
V
V
contrast of annunciators; AGND ³ GND.
For R-C oscillation, connect an external resistor
For external clock supply, input clock pulses to OSC1.
GND power supply for LCD drive
Low level power supply for annunciator display; can adjust
CC
CC
CC
CC
CC
CC
CC
–V
–V
–V
–V
–V
: +2.4V to +5.5V, GND (logic): 0V
level while annunciator display is turned off (DA = 0).
EE
EE
EE
EE
EE
: 3V–5V
: 4V–6V
: 5V–8V
: 7V or more
= 13V max.
CC
–V
EE
)
Only VREF and VREFM shorted
Pin Settings VREF,
VREFP, and VREFM
Only VREF and VREFP shorted
All pins open
All pins shorted
CC
CC
and AGND levels; outputs
and AGND levels; output V
CC
level.
CC
level.
HD66717
CC
); V1 to V5
461
CC