IA70C20 Datasheet, PDF (10/27 Pages) InnovASIC, Inc – 8-Bit Microcontroller

IA70C20
8-Bit Microcontroller
Data Sheet
August 19, 2008
b5/r/w_n
b7/clkout
b0/t2out
b1/t1out
b2
a0
a1
a2
a3
a4/sclk
a7/ec1
int3_n
int1_n
reset_n
a6/ec2
a5/rxd
xtal2/clkin
xtal1
d7
d6
1 ^U 40
2
39
3
38
4
37
5
36
6
35
7
34
8
33
9
32
10 31
11 30
12 29
13 28
14 27
15 26
16 25
17 24
18 23
19 22
20 21
V_ss
b6/enable_n
b4/alatch
b3/txd
mc
c7
c6
c5
c4
c3
c2
c1
c0
d0
d1
V_cc
d2
d3
d4
d5
1 2 3 4 5 6 44 43 42 41 40
a0 7
39 Vss
a1 8
38 c7
a2 9
37 c6
a3 10
36 c5
a4/sclk 11
35 c4
a7/ec1 12
34 _c3
int3_n 13
33 _c2
int1_n 14
32 c1
reset_n 15
31 c0
a6/ec2 16
30 d0
nc 17
29 d1
18 19 20 21 22 23 24 25 26 27 28
A. Plastic 40-Pin DIP
B. 44-Pin PLCC
3. Addressing Modes
IA70C20 assembly language supports eight addressing modes. These eight modes
are listed in Table 1. A description of each mode follows the table.
Table 1. IA70C20 Addressing Modes
Addressing Mode
Single register
LABEL
Dual register
LABEL
Peripheral file
Immediate
LABEL
LABEL
Example
DEC
INC
CLR
MOV
ADD
CMP
XORP
MOVP
AND
ANDP
BTJO
B
R45
R23
B,A
A , R17
R32 , R73
A , R17
P42 , B
%>C5 , R55
%VALUE , P32
%>D6 , R80 , LABEL
IA211030117-05
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