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VFD Driver/Controller IC

PT6315

PT6315 v2.0

Page 21

Sep. 2002

APPLICATION CIRCUIT 1

44 PIN LQFP

Figure 18: PT6315 LQFP Applicaiton Circuit

Note: The capacitor (0.1uF) connected between the GND and the VDD pins must be located as close

as possible to the PT6315 chip.

12 13 14 15 16 17 18 19 20 21 22

23

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25

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31

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44

MCU

Vcc

S19 S18 S17 S16 S15 S14 S13 S12 S11 S10 S9 S8 S7 S6

S5

S4

S3 S2

S1

G9

G8

G7

G6

G5

G4

G3

G2

G2

G1

9-GRID X 19-SEGMENT VFD

10K

330

330

330

330

100K

Vcc

-VEE

10K

10K

PT6315

VCC

1N4148 x 16

0.1 F