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LC7573NM Datasheet(PDF) 4 Page - Sanyo Semicon Device

No. de pieza LC7573NM
Descripción Electrónicos  1/2 Duty VFD Driver for Frequency Display
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Fabricante Electrónico  SANYO [Sanyo Semicon Device]
Página de inicio  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LC7573NM Datasheet(HTML) 4 Page - Sanyo Semicon Device

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Pin Functions
Serial Data Transfer Format
1. When CL is stopped at the low level
2. When CL is stopped at the high level
Figure 2
No. 3587-4/10
LC7573N, 7573NM
Pin No.
Pin
I/O
Function
Handling
when unused
1
VFL
Driver block power supply. A voltage of between 8.0 and 18.0 V must be supplied.
2
VDD
Logic block power supply. A voltage of between 4.5 and 5.5 V must be supplied.
5
VSS
Ground. Must be connected to the system ground.
3
OSC
I/O
Oscillator connection. An oscillator circuit is formed by connecting an external resistor and capacitor
to this pin.
VDD
Display off control input
4
BLK
I
BLK = low (VSS): Display off (G1 and G2 = low)
GND
BLK = high (VDD): Display on
Note that serial data can be transferred while the display is turned off.
7
CL
Serial data transfer inputs. These pins must be
CL: synchronization clock
8
DI
I
connected to the system controller.
DI: transfer data
GND
9
CE
CE: chip enable
When the analog dimmer is selected, the analog voltage applied to this pin controls the duty of the G1
and G2 digit output pins. Since a 6-bit A/D converter is applied to this analog voltage and that result is
6
DIM
I
input to a decoder that provides a built-in dimmer curve, the relationship between the analog voltage
GND
and the duty can be specified as a mask program. Note that 63/96 · VDD is the full-scale level for the
6-bit A/D converter.
30, 29
G1, G2
O
Digit outputs. The frame frequency fO is (fOSC/4096) Hz
Open
28 to 10
S1 to S19
O
Segment outputs for displaying the display data transferred by serial data input.
Open


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