MD4S
16
B1
21
23
V
CCA
V
CCB
24
B8
14
13
12
11
1
2
DIR
22
G
10
A8
3
A1
Logic
Level
Converter
Same as above block
V
CCA
DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND
GND
V
CCB
V
CCB
G
B1
B2
B3
B4
B5
B6
B7
B8
GND
(TOP VIEW)
INPUTS
OUTPUTS
FUNCTION
G
L
L
H
DIR
A-BUS
B-BUS
L
H
X
A=B
OUTPUT
INPUT
B=A
INPUT
OUTPUT
Z
High lmpedance
X : Don't Care
Z : High lmpedance
1
2
3
4
5
6
7
8
9
10
11
12
15
14
13
18
17
16
21
20
23
24
22
19
SDATA
XIN
XOUT
DIG15
DIG12
DIG11
DIG00
SCK
CS 14
15
16
16
20
18
17
RESET
SEG35
SEG27
SEG26
SEG00
23
31
33
59
1
12
61
64
P1
P0
SEGMENT
OUTPUT
CIRCUIT
OUTPUT
PORT
(2 BIT)
CGRAM
(35 BITX16)
CGROM
(35 BITX160)
DECODER
DECODER
DISPLAY CODE
REGISTER
(8 BITX16)
SERIAL
RECEIVE
CIRCUIT
CORD/
COMMAND
CONTROL
CIRCUIT
DISPLAY
CONTROL
REGISTER
DISPLAY
CONTROLLER
CLOCK
GENERATION
DIGITAL
OUTPUT
CIRCUIT
16
TC7S86F1 (XR681A00)
Exclusive OR Gate
TC74LVC4245FS (XU229A00)
Dual Supply Octal Bus Transceiver
1
5
2
3
4
IN B
GND
Vcc
OUT Y
IN A
M66004SP (XN173A00)
16 Digit 5 X 7 Sement VFD Controller
MAIN IC114
MAIN IC202
SUB IC801
www. xiaoyu163. com
QQ 376315150
9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299