Advertisement
UD-301/351
CIRCUIT DESCRIPTION
Description
SELECTOR
SW CONTROL
FL G7A grid drive terminal
FL G6A grid drive terminal
L GDA grid drive terminal
L G4A grid drive terminal
L G3A grid drive terminal
L G2A grid drive terminal
L G1A grid drive terminal
L S1 segment drive termina
L S3 segment drive termina
S4 segment drive termina
L S5 segment drive termina
L S6 segment drive termina
L S7 segment drive terminal
F
F
F
F
F
F
FL S2 segment drive termina
fs
FL.
F
F
F
F
L S8 segment drive terminal
FL S9 segment drive terminal
i Sane
FL S10 segment drive terminal
ie Ore
L_S11 segment drive terminal
ogee
unused
OPEN
FL $12
FL S12 segment drive terminal
Oe one
H=ON
FL $13
FL S13 segment drive terminal
= OFF
FL S14 segment drive terminal
FL S15/KS8
FL S15 segment drive terminal
KEY SCAN 8
FL S16/KS7
L S16 segment drive terminal
KEY SCAN 7
FL S17/KS6
L S17 segment drive terminal
KEY SCAN
6
FL S18/KS5
L S18 segment drive terminal
KEY SCAN
5
FL S19/KS4
L S19 segment drive terminal
KEY SCAN 4
FL S20/KS3
L S20 segment drive terminal
KEY SCAN
3
FL S21/KS2
L S21 segment drive terminal
KEY SCAN
2
FL S22/KS1
L S22 segment drive terminal
KEY SCAN
1
FL S23/KSO
L S23 segment drive terminal
KEY SCAN
0
| VCC
Power supply terminal
Connect with +5 V
DISC
IO
JO
lO
SO
SO
JOJO
!OJSOJSO
JOO
JOJO
sO
FL S10
FL S11
(e)
O}O
S
{e)
s)
pub
a
Eh,
eo
OOO
J;JO}/OJ;O
lO
vU
Glo
Slo
|G|olo
VEE
Poweor supply terminal for FL
Connect with —30 V
AVSS
GND for A/D
Connect with GND
A/D REFERENC
A/D reference voltage preset terminal
Connect with 5 V without backup oe
MUTE
AUDIO MUTE output
Pon
A/D (63 Hz)
Spectrum analyzer 63 Hz analog input
Core
A/D (160 Hz)
Spectrum analyzer 160 Hz analog input
Coote
A/D (400 Hz)
Spectrum analyzer 400 Hz analog input
oer
11
Advertisement
