Epson TM-U200 Series Technical Manual page 63

C o n fid e n tia l
CPU pin functions
Pin CPU
No. Function
35 AD0
36 AD1
37 AD2
38 AD3
39 AD4
40 AD5
41 AD6
42 AD7
43 A8
44 A9
45 A10
46 A11
47 A12
48 A13
49 A14
50 A15
51 VSS
52 P20
53 P21
54 P22
55 P23
56 P90
57 P91
58 P92
59 P93
60 RD
61 WR
62 P32
63 P33
64 P40
65 P41
66 P42
Rev. A
Signal Name I/O
AD0 3-state
AD1
AD2
AD3
AD4
AD5
AD6
AD7
A8 O
A9
A10
A11
A12
A13
A14
A15
VSS I
CR A/DSW1 I/O
CR B/DSW2
CR C/DSW3
CR D/DSW4
PF A/DSE5 I/O
RES/DSW6 I/O
PF C/DSW7 I/O
A19/DSW8 I/O
RD O
WR O
DKD1 O
DKD2 O
HEAD8 O
HEAD7 O
HEAD6 O
TM-U200 Series (Type A/AM)Technical Manual
Level Description
TTL Address/data bus.
Transmits address (lower 8 bits) and data.
TTL Address bus (address upper 8 bits).
(0 V) GND terminal.
TTL Carriage motor driver control 2-2 phase
excitation. All terminals on (LOW): hold.
DIP SW 1-1 to 1-4 read when P100 and P101 are
LOW.
TTL Paper feed motor driver control 2-2 phase
excitation. All terminals on (LOW): hold. DIP SW
1-5 read when P100 and P101 are LOW.
TTL DIP SW 1-6 read when P100 and P101 are LOW.
TTL Paper feed motor driver control 2-2 phase
excitation. All terminals on (LOW): hold. DIP SW
1-7 read when P100 and P101 are LOW.
TTL External memory address A19 (software)/DIP
SW 1-8 read when P100 and P101 are LOW.
TTL External memory data read signal.
TTL External memory data write signal.
TTL Drawer kick-out driver signal 1. LOW: active.
TTL Drawer kick-out driver signal 2. LOW: active.
TTL Print head #8 driver signal. LOW: on.
TTL Print head #7 driver signal. LOW: on.
TTL Print head #6 driver signal. LOW: on.
Mechanism Configuration and Operating Principles 2-21