ST7565P Ver la hoja de datos (PDF) - Unspecified
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ST7565P Datasheet PDF : 71 Pages
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ST7565P
PIN DESCRIPTIONS
Power Supply Pins
Pin Name
VDD
VDD2
VSS
VRS
V0, V1,
V2, V3,
V4,Vss
I/O
Function
No. of Pins
Power
Supply
Power supply
13
Power
Supply
Power supply
10
Power
Supply
Ground
2
Power This is the internal-output VREG power supply for the LCD power supply voltage
Supply regulator.
2
This is a multi-level power supply for the liquid crystal drive. The voltage Supply
applied is determined by the liquid crystal cell, and is changed through the use of a
resistive voltage divided or through changing the impedance using an op. amp.
Voltage levels are determined based on Vss, and must maintain the relative
magnitudes shown below.
V0 ≧V1 ≧V2 ≧V3 ≧V4 ≧Vss
Power
Supply When the power supply turns ON, the internal power supply circuits produce the V1
10
to V4 voltages shown below. The voltage settings are selected using the LCD bias
set command.
1/65 DUTY 1/49 DUTY 1/33 DUTY 1/55 DUTY 1/53 DUTY
V1 8/9*V0,6/7*V0 7/8*V0,5/6*V0 5/6*V0,4/5*V0 7/8*V0,5/6*V0 7/8*V0,5/6*V0
V2 7/9*V0,5/7*V0 6/8*V0,4/6*V0 4/6*V0,3/5*V0 6/8*V0,4/6*V0 6/8*V0,4/6*V0
V3 2/9*V0,2/7*V0 2/8*V0,2/6*V0 2/6*V0,2/5*V0 2/8*V0,2/6*V0 2/8*V0,2/6*V0
V4 1/9*V0,1/7*V0 1/8*V0,1/6*V0 1/6*V0,1/5*V0 1/8*V0,1/6*V0 1/8*V0,1/6*V0
LCD Power Supply Pins
Pin Name
CAP1P
CAP1N
CAP2P
CAP2N
CAP3P
CAP4P
CAP5P
VOUT
VR
I/O
Function
No. of Pins
O
DC/DC voltage converter. Connect a capacitor between this terminal and the CAP1N
terminal.
4
O
DC/DC voltage converter. Connect a capacitor between this terminal and the CAP1P
terminal.
2
O
DC/DC voltage converter. Connect a capacitor between this terminal and the CAP2N
terminal.
2
O
DC/DC voltage converter. Connect a capacitor between this terminal and the CAP2P
terminal.
2
O
DC/DC voltage converter. Connect a capacitor between this terminal and the CAP1N
terminal.
2
O
DC/DC voltage converter. Connect a capacitor between this terminal and the CAP2N
terminal.
2
O
DC/DC voltage converter. Connect a capacitor between this terminal and the CAP1N
terminal.
2
O
DC/DC voltage converter. Connect a capacitor between this terminal and VSS or
VDD
2
Output voltage regulator terminal. Provides the voltage between VSS and V0 through
I
a resistive voltage divider.
IRS = “L” : the V0 voltage regulator internal resistors are not used.
2
IRS = “H” : the V0 voltage regulator internal resistors are used.
Ver 2.1b
19/71
2009/09/14
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