MC3411A 查看數據表（PDF） - Unspecified

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MC3411A

16 SEGMENT X 12 GRID VFD DRIVER WITH KEYSCAN

Unspecified 

MC3401A/3411A

PIN DESCRIPTION

PIN NAME

LED1 to LED4

OSC

DOUT

DIN

(Schmitt

Trigger)

CLK

(Schmitt

Trigger)

STB

(Schmitt

Trigger)

K1 to K2

VSS

I/O

DESCRIPTION

PIN No.

(MC3401A)

O LED Output Pin

1 to 4

Oscillator Input Pin

I

A resistor is connected to this pin to determine the

oscillation

Frequency.

Data Output Pin (N-Channel, Open-Drain)

O

This pin outputs serial data at the falling edge of the shift

clock

(starting from the lower bit)

Data Input Pin

I

This pin inputs serial data at the rising edge of the shift

clock

(starting from the lower bit)

Clock Input Pin

I This pin reads serial data at the rising edge and outputs

data at the falling edge of the shift clock

Serial Interface Strobe Pin

I The data input after the STB has fallen is processed as a

command. When this in is “HIGH”, CLK is ignored.

Key Data Input Pins

I The data inputted to these pins is latched at the end of the

display cycle.

5

6

7

8

9

10, 11

- Logic Ground Pin

12, 44

PIN No.

(MC3411A)

1 to 4

5

7

8

9

10

11, 12

13, 48

VDD

- Logic Power Pin

SG1/KS1 to

SG16/KS16

O

High-Voltage Segment Output Pins

Also acts as the Key Source.

VEE

- Pull-Down Level

SG17/GR12 to

SG24/GR5

O

High-Voltage Segment/Grid Output Pins

GR4 to GR1

O High-Voltage Grid Output Pins

13, 43

14, 47

14 to 29

15 to 32

30

33

31 to 38

34 to 41

39 to 42

43 to 46

February 28, 2013 Ver. 1.10

6/29

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