LH1694 Ver la hoja de datos (PDF) - Sharp Electronics
Número de pieza
componentes Descripción
Fabricante
LH1694 Datasheet PDF : 10 Pages
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LH1694
VDD
O
VEE
From Internal Circuit
(VDD-VEE)
¿Applicable pins¡
OG1-OG256
Fig. 3 Output Circuit
FUNCTIONAL DESCRIPTION
Pin Functions
SYMBOL
VDD
VLS
GND
VCC
VEE
VSS
CKV
SVIO
SVOI
R/L
OE1
OE2
OE3
TEST1
TEST2
OG1-OG256
FUNCTION
Used as power supply pin for high level LCD drive.
Used as power supply pin for input level shifters.
Used as power supply pin for input level shifters.
Used as power supply pin for logic system, normally connected to VSS + 5.0 V.
Used as power supply pin for low level LCD drive.
Used as logic system power supply pin.
Used as vertical shift clock pulse input pin.
Used as vertical scanning start pulse input/output pins.
Data input/output pins for shift register. During input, data is read at the rising edge of the
CKV. During output, data is output at the falling edge of the CKV.
• When R/L = "H".
SVOI is set to data output pin for next cascade, and SVIO is set to input pin for shift data.
• When R/L = "L".
SVOI is set to input pin for shift data, and SVIO is set to data output pin for next cascade.
Used as input pin for selecting the shift direction of bi-directional shift register and for
setting the sequence of cascade connection.
LCD drive outputs shift from OG1 to OG256 when set to "H". LCD drive outputs shift from
OG256 to OG1 when set to "L".
Input pins for output-enable. LCD drive output is set to "L", when OE1, OE2, and OE3 pins
are set to "H", and it has no relation with clock input.
Relationship between enable control and output pins;
OE1 : OG1, OG4 π OG250, OG253, OG256
OE2 : OG2, OG5 π OG251, OG254
OE3 : OG3, OG6 π OG252, OG255
Used as input pins for IC testing.
Must be set to "H".
Used as output pins for LCD drive output, and which output data at 2 levels.
• Selecting data is output at VDD level .
• Non-selecting data is output at VEE level .
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