LC75805PE Datasheet, PDF (7/34 Pages) ON Semiconductor – LCD Display Driver with LED Driver

LC75805PE
Pin Functions
Symbol
LD1 to LD16
LD17 to LD32
LD33 to LD48
Pin No.
2 to 17
20 to 35
38 to 53
Function
These are LED driver output pins that display the display data for LED transferred
by serial data input, and high- voltage open-drain output pins. (Pull-up voltage is
30[V] maximum.) In addition, brightness adjustment of LED is possible by PWM
function, too.
Handling
Active I/O
when
unused
-
O
OPEN
COM1
55
These are common driver output pins, and Frame frequency is fo [Hz].
COM2/S38
56
COM2/S38, COM3/S37 and COM4/S36 are possible to be used as the segment
COM3/S37
57
output by control data.
-
COM4/S36
58
S35 to S1
59 to 93
These are segment output pins that display the display data for LCD transferred by
serial data input.
-
This is input pin for the external clock.
OSCI
96
Input the clock whose frequency (fCK) is between 100 and 600[kHz] at external
clock operating mode.
-
Furthermore, connect to GND at internal oscillator operating mode.
O
OPEN
O
OPEN
I
GND
CE
98
These are input pins for serial data transfer, and connect to the controller.
CL
99
CE: Chip enable
CL: Synchronized clock
DI
100
DI: Transfer data
H
I
I
GND
-
I
Display off control input pin
• INH = Low-level (VSS) ...Display forced off
LD1 to LD48 = Z (High-impedance)
INH
97
COM1 = L (VSS)
COM2/S38 to COM4/S36 = L (VSS)
S1 to S35 = L (VSS)
Internal oscillator operation is stopped.
External clock input is forbidden.
• INH = High-level (VDD)...Display on
Internal oscillator operation is possible.
(At Internal oscillator operating mode)
External clock input is possible.
(At External clock operating mode)
However, serial data can be transferred during turn off.
L
I
GND
VDD
94
This is power supply pin.
Supply the voltage between 4.5V and 5.5V.
-
-
-
VSS
1
18
19
36
These are power supply pins.
37
Connect to GND.
54
95
-
-
-
No.A2119-7/34