Sharp PC-1500 Technical Reference Manual page 78

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3-3-3. Pin description
(• ): See Pad layout and structure In 3-5-2.
No.
Signal Function
No.
Signal Fu nction
name
name
1
PA l
Po :t i nptitloutput
31
RS2
RP.fi 1 S~Qt
sol ect 1 npt:t
2 Pt\2
Po rt 1n p11t/ou;pu1 32 RS3
Rcgis;cr select input
3 PAJ
?01 t 1 n put/outpu1
33
R/W
f'.leadt v .. rite inp ul
4
PA·~
Po rt input/o u1put 34
MEO
Memory
~n ab!e
inp ut
5
PAS
Port input/oulpul
35
ME1
Merno ry ('nab lc inp ut
6 P/\S
Pert inpul/ Oulpul
36 WO '.Va1 1 COr)j 1t1 on 1n pu1
7 P1\7 Pe rt inpu lfou1 p u1
37 \1,/1
•.van condition 1 npu1
8
GNO
f'0 \•1er source
JB
GND
PO\'JCf sov tCC
9
PBO
Pon
inpul/output
39
vcc
Po.,.•er SOlJrc-e
10 PB1
Pon
inpul/output
40 OMEO
f' • .,emory e nable output
11
PB2
Pon input/o ut put
41 OME 1 f' • .,ernory c nablc output
1 2
P83
Por1 input/o ut put
42
WAIT
\Vait ou1pu1
1 3
f'84 Porl input/output
43
IN T 1 n1cttup1 output
11; PBS
Po n 1 np ut/o u;put
44
RESET
lnitiaJize Olit out
1 5 PB6
Pon
inp ut1o u1pu;
45
IRO Interrupt inp ut
16 Pll7 Pon inpu11ou1pu1 . lntorfupt inpu1
46 ~OS Sasic c rock input
17 Pel> Port PC latch clock
47 CL1
Serial receive ciock input
16
PCO
Port ovt put
·~8
SDI
S<:nal fcccivc hl put
19
PCl
Port output 49
LC )
Not used
20
PC2
PO(t
CU1P UI
50 CLO Serial ret l ttn clock inpu1 / ou1put
21
PC3
Po f t o u1put
51
soo
Se rial rec / t rn input/ output
22 PC4 Port ou1pv1 52
00
Data bu$ 1npu1/ ou tpul
23 PCS
Po rt ou1pu1 53 0 1
Data bus i 1 , pu1/ ou1 put
2•1
PC6 Po rt oulpul
54
02
Data bus
i 1~pu lfo u tp u t
25 PC7
Pon o u1pu1 55
03
O~t~
!>us inpullotilput
26
cso
Chip select
i 1~p u t 56 04
Data bus inp ut/ Ol•lput
27
CSI
Chip select input
57
OS
Data bvs i nput/ Output
26
CS2
Chip select input
58 06
Data bus input /out put
29 RSO Register
sel~ ct
1npv!
59
0 7
Da:a bus i nput/ output
30
RS1 Ro91stllf select 1 npu1 60 PAO Poft inpul/ou!put
73
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