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LC75814V View Datasheet(PDF) - SANYO -> Panasonic

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LC75814V Datasheet PDF : 14 Pages
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LC75814V
Pin Functions
Pin
S1/P1 to
S4/P4
S5 to S16
COM1
COM2
COM3
COM4
OSC
CE
CL
DI
INH
VLCD1
VLCD2
VDD
VLCD
VSS
Pin No.
Function
1 to 4
5 to 16
Segment outputs for displaying the display data transferred by serial data input. The pins
S1/P1 to S4/P4 can be used as general-purpose output ports when so set up by the
control data.
Common driver outputs.
17 to 20 The frame frequency fO is given by: fO = (fOSC/512) Hz.
26
Oscillator connection
An oscillator circuit is formed by connecting an external resistor and capacitor to this pin.
28
29
30
Serial data transfer inputs. These pins are
connected to the control microprocessor.
CE: Chip enable
CL: Synchronization clock
DI: Transfer data
Display off control input
INH = low (VSS): Off
S1/P1 to S4/P4 = Low
(These pins are forcibly set to the segment output port function and
27
fixed at the VSS level.)
S5 to S16 = Low (VSS),
COM1 to COM4 = Low (VSS)
INH = high (VDD): On
Note that serial data transfers can be performed when the
display is forced off by this pin.
Used to apply the LCD drive 2/3 bias voltage externally. This pin must be connected to
23
VLCD2 when 1/2 bias drive is used.
Used to apply the LCD drive 1/3 bias voltage externally. This pin must be connected to
24
VLCD1 when 1/2 bias drive is used.
21
Logic block power supply. Provide a voltage in the range 2.7 to 6.0 V.
22
LCD driver block power supply. Provide a voltage in the range 2.7 to 6.0 V.
25
Ground pin. Connect to ground.
Active
I/O
Handling
when unused
O
Open
O
Open
— I/O
H
I
VDD
GND
L
I
GND
I
I
Open
Open
Serial Data Transfer Format
1. When CL is stopped at the low level
CE
CL
DI
1 1 1 1 0 0 1 0 D1 D2 D3
B0 B1 B2 B3 A0 A1 A2 A3
CCB address
8 bits
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30 D31 D32 0 P0 P1 P2 DR SC BU 0
Display data
32 bits
Control data
7 bits
DD
1 bit
1 1 1 1 0 0 1 0 D33 D34 D35
B0 B1 B2 B3 A0 A1 A2 A3
CCB address
8 bits
Note: DD ... Direction data
D53 D54 D55 D56 D57 D58 D59 D60 D61 D62 D63 D64 0 0 0 0 0 0 0 1
Display data
32 bits
Fixed data
7 bits
DD
1 bit
ILC00273
No. 6792-5/14
 

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