Sharp CE-129P Service Manual page 3

6. P-CPU (MPD75060515,
C-MOS 1 chip 4 bit micro-computer
Terminal Terminal
name
No.
1 NC
2 NC
3
CL1
4 NC
5
CL2
NC
6
7 GNO
8 RST
_1
9 P10
10
P11
P12
12
NC
--
....
15
NC
16 P13
17
P50
18 P51
19 NC
20 NC
21 P52
22 P53
23 POO
24
P40
-
25
NC
-
28 NC
29 "- P41
P42
~~
VOO
32
NC
33
GNO
34
P43
35 NC
36
X2
-
37
NC
....
40
NC
POl
41
42
P20
43
P21
44 P22
45 P23
46 Ne
47 P60
48 P61
P62
49
P63
50
51 NC
52 NC
516 SIGNAL DESCRIPTION)
Signal name Input/Output
- -
-
-
-
-
- -
- -
-
-
-
GNO
-
Input
VOO Input/(Output)
OOUT Input/ (OutpUt)
XOUT
Input/(Output)
-
-
....
....
-
-
8USY Input/(Output)
01 Input/Output
02
Input/OutpUt
-
-
-
-
03 Input/Output
04
Input/Output
SEL1
Input
VOO Input/Output
-
-
.... ....
-
-
l.B Input/(Output)
VOO Input/(Output)
-
VOO
-
-
-
GNO
GNO
Input/Output
-
-
-
NOTUSE
-
-
....
....
-
-
SEL2
Input
R/W Output
REM2 Output
(SEL2)
Output
(SEl1)
Outpl.'t
-
-
JN (lnput)/Output
OIN
(I nput)/Output
(Input)/Output
ACK
REMl (lnput/Output
- -
-
-
System clock Oscillation frequency --
System clock
Power supply, OV
P~U reset input: when power supply is ON, reset operation.
Min 30
JlS
Setting VOO (-4"" -6V)
Oevice select data and print data
ldentification of the contents of OOUT (whether it is device select
data or print data.)
Handshake signal. latch si!Jlal by which the P-CPU abtains OOUT
data.
Oata bus line between the P-CPU and the PCU.
Data bus line between the P-CPU and the PCU.
Oata bus line between the P-CPU and the PCU.
Oata bus line between the P-CPU and the PCU.
Select input signal. It is not used in the PC-1400, El-5500
Setting VOO (-4 - -6V).
low battery detection
Setting VOO (-4 .... - SV).
Power supply VOO (-4 .... -6V)
Power supply OV
Setting GNO (OV)
Select Input signal. It is not used in the PC-1400, EL-5500 series.
Read/write signal for the PCU. High: read High-low:
Remove OFF pulse signal
PCU chip select signal. High: selected,
PCU clear signal. High: ACl active Low: normal
Paper feed key strobe signal when CPU: MP07506G516
Printe Error signal to host CPU. High: printer Error.
Handshake signal P-CPU to host CPU.
Remoto ON pulse signal.
Do not sale !
-8-
C E-l29P
Description
approx. 200 KHz
signal. Normal high.
low: non select
-
series.
write
is used.
low: Normal