SM6311 Datasheet, PDF (3/11 Pages) SamHop Microelectronics Corp. – VFD CONTROLLER / DRIVER

SAMHOP Microelectronics Corp.
VFD CONTROLLER / DRIVER
SM6311
PIN DESCRIPTION
SYMBOL
S1 to S4
PIN NAME
Switch Input
DOUT
Data Output
DIN
Data Input
GND
Logic Ground
CLK
Clock Input
STB
Strobe
K1 to K4
Key data input
VDD
Sg1/KS1~
Sg12/KS12
Sg12/G16~
Sg20/G9
VEE
G1~G8
Logic Power
Segment/Key
Segment/Grid
Pull Down
Level
Grid
PIN NO.
1 to 4
5
6
7,51
8
9
10 to 13
14, 33, 45
15 to 26
27 to 32
35 to 36
34
FUNCITON DESCRIPTION
4 bit general-purpose input port.
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.
37 to 44
Grid output pins
LED1~LED5 LED Output
OSC
Oscillator Pin
46 to 50
52
CMOS output. +20 mA max.
Connect resistor for determining oscillation
frequency to this pin.
Page 3
V.1.2, MAY,2003