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MICROPROCESSOR (lC·503) PIN ALLOCATION
6(A61
7(A71
Il A
I)
4(A41
5(A51
Memory address 3(A31
Memory address 2( A21
P27
P26
SlASI
9lA91
P37/SRDY
RF filter switch
P3!!/TXD
RF filter sw
itch
PI3
RF fi Iter sw
itch
P34/RXD
PI4
P33/CNTR
PI!!
P321INT2
P31
P3ct>
USA/etc
Cel lu lar switch
INTI
Reset
CNV
ss
Input
RESET
XIN
XOUT
ct>
Low battery
LCD Busy
v ss
Search
Mute
Memor
veo
filter I Out ut
veo
fi Iter 2 Out ut
Memor address
Memory address
Memory add ress
-
67
-
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