SN74HCU04NSR (XC723A00)
SN74HCU04N (IG142250)
Hex Inverter
1
2
3
4
5
6
7
1A
1Y
2A
2Y
3A
3Y
Vss
14
13
12
11
10
9
8
VDD
6A
6Y
5A
5Y
4A
4Y
SN74HC08NSR (XD831A00)
HD74LVC08FP (XU720A00)
Quad 2 Input AND
1
2
3
1A
1Y
4
2A
5
2B
6
2Y
7
VSS
1B
14
13
12
VDD
4A
11
4Y
10
3B
9
3A
8
3Y
4B
TC74HC32AF (XN241A00)
Quad 2 Input OR
1
2
3
1A
1Y
4
2A
5
2B
6
2Y
7
GND
1B
14
13
12
Vcc
4A
11
4Y
10
3B
9
3A
8
3Y
4B
TC74HC138AF (XM970A00)
TC74HC138AFEL (XW762A00)
3 to 8 Demultiplexer
1
2
3
4
5
6
7
A
A
Select
Enable
Output
Output
B
B
C
C
G2A
G2A
G2B
G2B
G1
G1
Y7
Y7
Y5
Y4
Y3
Y2
Y1
Y0
Y6
16
15
14
13
12
11
10
Vcc
YO
Y1
Y2
Y3
Y4
Y5
8
GND
9
Y6
SN74HC374ANSR (XQ042A00)
Octal 3-State D-Type Flip-Flop
Q
D CK
OE
Q
D CK
OE
Q
D CK
OE
Q
D CK
OE
OUTPUT
CONTROL
1Q
1D
2D
2Q
3Q
3D
4D
4Q
GND
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
Vcc
8Q
8D
7D
7Q
6Q
6D
5D
5Q
CLOCK
Q
D
CK
OE
Q
D
CK
OE
Q
D
CK
OE
Q
D
CK
OE
SN75C1168N (XU463A00)
Line Driver / Receiver
1
2
3
4
5
6
7
1B
1A
1R
1DE
2R
2A
2B
16
15
14
13
12
11
10
Vcc
1D
1Y
1Z
2DE
2Z
2Y
8
GND
9
2D
M5227P (XF751A00)
5-Band Graphic Equalizer
1
2
3
4
5
6
7
IN1
NF1
IN2
NF2
IN3
NF3
IN4
16
15
14
13
12
11
10
-Vcc
GND
+Vcc
OUT
-IN
10k
10k
47k
47k
47k
540
540
540
540
540
540
47k
47k
47k
+IN
NF5
8
NF4
9
IN5
+-
+-
+-
+-
+ -
+ -
LB1443N (XF483A00)
LED Driver
1
2
3
4
5
6
7
8
9
GND
IN
VCC
OUT
D1
D2
D3
D4
D5
1
A
2
3
4
5
6
7
8
9
+V
-IN
-V
+IN
OUT
A
A
A
+V
-IN
+IN
OUT
B
B
B
-
+
B
-
+
µ
PC4570HA (XB247A00)
Dual Operational Amplifier
M5223AFP (XV117A00)
M5223AL (XW373A00)
Dual Operational Amplifier
1
2
3
4
-V
8
7
6
5
Output A
+V
Non-Inverting
Input A
Ground
+DC Voltage
Supply
Output B
Inverting
Input B
Non-Inverting
Input B
Inverting
Input A
+
-
+
-
DM:
IC10,16(PSR-740) IC420(PSR-640)
JACK: IC02
DM: IC15(PSR-740) IC370(PSR-640)
DM: IC14(PSR-740) IC360(PSR-640)
DM: IC13,19(PSR-740) IC350,510(PSR-640)
DM: IC18,20(PSR-740) IC430,500(PSR-640)
JACK: IC01
AM: IC210,220
DM: IC33(PSR-740)
MIC: IC100(PSR-740)
MIC: IC001(PSR-740)
AM: IC320,510
IC BLOCK DIAGRAM
HD63266F (XI939A00) FDC (Floppy Disk Controller)
SED1335F0B (XQ595A00) LCDC (LCD Controller)
PSR-740/PSR-640
19
PIN
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
I/O
I
I
I
I
I
I
I
I
I
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
O
I
I
I
I
I
I
I
I
8"//5"
XTALSET
/RESET
E//RD
RW//WR
/CS
/DACK
RS0
RS1
VSS1
VSS2
D0
D1
D2
D3
D4
D5
D6
D7
/DREQ
/IRQ
/DEND
VSS3
1/2 EX1
VCC1
NUM1
NUM3
IFS
SFORM
/INP
/READY
/WPRT
NAME
Data transmission speed
Clock select
Rest
Enable/Read
Read/write/Write
Chip select
DMA acknowledge
Register select
Ground
Data bus
DMA request
Interrupt request
Data end
Ground
Power supply
Host interface select
Format data
Index pulse
Ready from FDD
Write control signal
FUNCTION
PIN
NO.
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
I/O
I
I
I
O
O
O
O
O
O
O
O
O
O
O
O
O
O
/TRKO
/INDEX
/RDATA
XTAL2
EXTAL2
NC
XTAL1
EXTAL1
VSS4
VSS5
NC
VCC2
VCC3
VCC4
/WGATE
/WDATA
VSS6
/STEP
/HDIR
/HLOAD
/HSEL
VSS7
/DS0
/DS1
/DS2
/DS3
VSS8
/MON0
/MON1
/MON2
/MON3
VSS9
NAME
Track 00 signal
Index signal
Read data input from FDD
Clock
Clock
Ground
Power supply
Write control
Writ data to FDD
Ground
Step signal to control head of FDD
Direction
Head load
Head select
Ground
Drive select
Ground
Motor on
Ground
FUNCTION
PIN
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
I/O
O
O
O
O
O
O
O
O
-
I
-
-
I
I
I
I
I
O
I
I
-
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
VA5
VA4
VA3
VA2
VA1
VA0
/VWR
/VCE
/VRD
/RES
NC
NC
/RD
/WR
SEL2
SEL1
OSC1
OSC2
/CS
A0
Vdd
D0
D1
D2
D3
D4
D5
D6
D7
XD3
NAME
VRAM address bus
VRAM read/write
Memory control
Not used
Initial clear
Not used
Not used
Read strobe
Write strobe
Bus select
Bus select
Clock
Clock
Chip select
Data mode select
Power supply
Data bus
Data bus output for 4 bit dot
FUNCTION
PIN
NO.
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
I/O
O
O
O
O
O
-
O
O
O
O
O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
O
O
O
O
O
O
O
O
O
-
XD2
XD1
XD0
XECL
XSCL
Vss
LP
WF
YDIS
YD
YSCL
VD7
VD6
VD5
VD4
VD3
VD2
VD1
VD0
VA15
VA14
VA13
VA12
VA11
VA10
VA9
VA8
VA7
VA6
NC
NAME
Data bus output for 4 bit dot
S driver enable, chain clock
Data bus shift clock
Ground
X driver latch pulse
Frame signal for X/Y driver
Power down signal for displaying off mode
Scan start signal
Scan shift clock
VRAM data bus
VRAM address bus
Not used
FUNCTION
Summary of Contents for PortaTone PSR-640
Page 4: ...4 PSR 740 PSR 640 ...
Page 22: ...22 PSR 740 PSR 640 DM Circuit Board PSR 640 Component side Pattern side 2NA V350510 1 2 1 ...
Page 27: ...27 PSR 740 PSR 640 ...
Page 28: ...28 PSR 740 PSR 640 ...
Page 32: ...32 PSR 740 PSR 640 ...
Page 33: ...33 PSR 740 PSR 640 ...