HT0610 Holtek Semiconductor Inc., HT0610 Datasheet - Page 5

• Manufacturer Part Number: HT0610
• Description: Ht0610 -- 33x120 Lcd Driver
• Manufacturer: Holtek Semiconductor Inc.

Pin Description
Rev. 1.10
VDD
RES
VSS
DCOM
RW
CS
D0~D7
CE
OSC1
OSC2
C1P, C1N
C2P, C2N
VLL2~VLL6
DUM1, DUM2
C+, C-
VCCA1
VF, VR
COM0~COM32
VDDA
ICON1~ICON4
IBP
SEG0~SEG119 O These 120 pins provide LCD column driving signal to LCD panel.
Pin Name
I/O
¾ If internal DC/DC converter is enabled, a capacitor is required to connect these two pins.
¾
¾ If internal divider circuit is enable, a capacitor is required to connect between these two pin
¾
O
O
O
O
O These pins provide the row driving signal to LCD panel
O There are four independent annunciator driving outputs
O This pin combines with ICON1~ICON4 pins to form annunciator driving part.
B Those bi-direction pins are used for DATA or command transferring.
I
I
I
I
I
I
I
I
I
VDD is the positive supply to the digital control circuit and other circuitry in LCD bias voltage
generator (Must have same voltage level with VDDA)
Active low reset pin; reset all internal status of circuit (Same as power on reset)
VSS is ground
If pull this pin ²High² then D0~D7 bi-direction bus is used for data transferring; If DCOM pin is
²Low² then D0~D7 bi-direction bus is used for command transferring.
If pull this pin high: Indicate we want to read the display data RAM or the internal state. If we
force this to Low: Indicate we want to write data to display data RAM or write some internal
state to registers.
This pin is normal low clock input. Data on D0~D7 bi-direction data bus are latched at the fall-
ing edge of CS
High input to this pin to enable the control pins on the driver.
Oscillator input pin.
For internal oscillator mode, this is an input for the internal low power RC oscillator circuit. In
this mode, an external resistor of certain value is placed between the OSC1 and OSC2 pins.
For external oscillator mode, OSC1 pin should be left open
Oscillator output pin
For internal oscillator mode, this is an output for the internal low power RC oscillator circuit.
External Oscillator input
For external oscillator mode, OSC2 will be an input pin for external clock and no external resis-
tor is needed.
If internal tripler is enabled, a capacitor is required to connect these two pins. Otherwise, leave
these pin open.
Group of voltage level pins for driving the LCD panel. They can either be connected to external
driving circuit for external bias supply or connected internally to built-in divider circuit. For in-
ternal voltage divider enable, a 0.1mF capacitor to VSS is required on each pin.
If internal voltage divider is enable with 1/7 bias selected, a capacitor to VSS is required on
each pin. Otherwise, pull these two pin to VSS
If internal DC/DC Converter is enabled, a 0.1mF capacitor from this pin to VSS is required. It
can also be an external bias input pin if internal DC/DC converter is not used
This is a feedback path for the gain control (external contrast control) of VLL1 to VLL6. For ad-
justing the LCD driving voltage, it requires a feedback resistor placed between VR and VF, a
gain control resistor placed between VF and VSS, a 10uF capacitor placed between VR and
VSS.
VDDA is the positive supply to the noise sensitive circuitry and must have same voltage level
with VDD
5
Description
April 4, 2007
HT0610