ZBasic System Library
25
ZBasic Microcontrollers
mega6490A, mega6490P
AT90USB646, AT90USB647, AT90USB1286,
AT90USB1287
T64
0
10, B.0
11, B.1
12, B.2
13, B.3
xmega16a4, xmega32a4
T44
0
1
24, D.4
23, C.4
27, D.7
17, C.7
25, D.5
15, C.5
26, D.6
16, C.6
xmega16d4, xmega32d4
T44
0
1
24, D.4
23, C.4
27, D.7
17, C.7
25, D.5
15, C.5
26, D.6
16, C.6
xmega64a3, xmega128a3, xmega256a3,
xmega256a3b
T64
0
1
2
30, D.4
20, C.4
40, E.4
33, D.7
23, C.7
43, E.7
31, D.5
21, C.5
41, E.5
32, D.6
22, C.6
42, E.6
xmega64d3, xmega128d3, xmega192d3, xmega256d3
T64
0
1
30, D.4
20, C.4
33, D.7
23, C.7
31, D.5
21, C.5
32, D.6
22, C.6
xmega64a1, xmega128a1
T100
0
1
2
3
29, D.4
19, C.4
39, E.4
49, F.4
32, D.7
22, C.7
42, E.7
52, F.7
30, D.5
20, C.5
40, E.5
50, F.5
31, D.6
21, C.6
41, E.6
51, F.6
For the available hardware I2C channels, the table below gives the pin numbers used for SDA and SCL.
SCL and SDA Pins by Channel for ZX Devices
ZX Device
Chan.
SCL
SDA
ZX-24, ZX-24a, ZX-24p, ZX-24n, ZX-24r, ZX-24s
0
12, C.0
11, C.1
ZX-40, ZX-40a, ZX-40p, ZX-40n, ZX-40r, ZX-40s, ZX-40t
0
22, C.0
23, C.1
ZX-44, ZX-44a, ZX-44p, ZX-44n, ZX-44r, ZX-44s, ZX-44t
0
19, C.0
20, C.1
ZX-24e, ZX-24ae, ZX-24ne, ZX-24pe, ZX-24nu, ZX-24pu, ZX-24ru, ZX-24su
0
12, C.0
11, C.1
ZX-328n, ZX-328l, ZX-32n, ZX-32l
0
28, C.5
27, C.4
ZX-1281, ZX-1281n
0
25, D.0
26, D.1
ZX-1280, ZX-1280n
0
43, D.0
44, D.1
ZX-24x
0
1
11, C.1
17, E.1
12, C.0
25, E.0
ZX-32a4
0
1
11, C.1
29, E.1
10, C.0
28, E.0
ZX-128a1
0
1
2
3
16, C.1
36, E.1
26, D.1
46, F.1
15, C.0
35, E.0
25, D.0
45, F.0
ZX-128e, ZX-128ne, ZX-1281e, ZX-1281ne
0
12, D.0
11, D.1
ZX-328nu
0
22, C.5
21, C.4
ZX-24xu
0
1
11, C.1
23, E.1
12, C.0
24, E.0
It is important to note that on the ZX-24n, ZX-24p, ZX-24r and ZX-24s, the hardware I2C channel cannot
be used while Com2 is open since pin 11 is shared by the SDA signal and TxD for Com2.
SCL and SDA Pins by Channel for Generic Target Devices
Target Device
Pkg.
Chan.
SCL
SDA
tiny24, tiny24A, tiny44, tiny44A, tiny84, tiny87, tiny167, tiny2313,
tiny2313A, tiny4313
all
-
-
-
tiny48, tiny88
P28
0
28, C.5
27, C.4
T28
0
24, C.5
23, C.4
T32
0
28, C.5
27, C.4
mega48, mega48A, mega48P, mega48PA, mega8, mega8A, mega88,
mega88A, mega88P, mega88PA, mega168, mega168A, mega168P,
mega168PA, mega328, mega328P
P28
0
28, C.5
27, C.4
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