SM6311 datasheet(3/11 Pages) SAMHOP

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Page 3

PIN DESCRIPTION

V.1.2, MAY,2003

FUNCITON DESCRIPTION

Outputs serial data at falling edge of shift clock,

starting from lower bit.

Input serial data at rising edge of shift clock,

starting from lower bit.

Connect this pin to GND of system.

Reads serial data at rising edge, and outputs

data at falling edge.

While STB is low, Data is valid; while STB is

high, CLK is ignored.

Data input to these pins is latched at end of

display cycle.

5V+10%.

Segment output pins (Dual function as key

source).

These pins are selectable for segment or grid

output.

VDD-35V max.

Grid output pins

CMOS output. +20 mA max.

Connect resistor for determining oscillation

frequency to this pin.

4 bit general-purpose input port.

7,51

10 to 13

14, 33, 45

15 to 26

27 to 32

35 to 36

37 to 44

46 to 50

PIN NO.

1 to 4

SYMBOL

DOUT

DIN

GND

CLK

STB

K1 to K4

VDD

Sg1/KS1~

Sg12/KS12

Sg12/G16~

Sg20/G9

VEE

G1~G8

LED1~LED5

OSC

S1 to S4

PIN NAME

Data Output

Data Input

Logic Ground

Clock Input

Strobe

Key data input

Logic Power

Segment/Key

Segment/Grid

Pull Down

Level

Grid

LED Output

Oscillator Pin

Switch Input

SM6311

SAMHOP Microelectronics Corp.

VFD CONTROLLER / DRIVER

SM6311 Datasheet(PDF) 3 Page - SamHop Microelectronics Corp.

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