ZBasic System Library
33
ZBasic Microcontrollers
Analog Comparator Input Pins for ZX Devices
ZX Device
AIN0
Pin
AIN1
Pin
ZX-24, ZX-24a, ZX-24p, ZX-24n, ZX-24r, ZX-24s
18, B.2
19, B.3
ZX-40, ZX-40a, ZX-40p, ZX-40n, ZX-40r, ZX-40s, ZX-40t
3, B.2
4, B.3
ZX-44, ZX-44a, ZX-44p, ZX-44n, ZX-44r, ZX-44s, ZX-44t
42, B.2
43, B.3
ZX-328n, ZX-328l
12, D.6
13, D.7
ZX-32n, ZX-32l
10, D.6
11, D.7
ZX-1281, ZX-1281n, ZX-1280, ZX-1280n
4, E.2
5, E.3
ZX-24e, ZX-24ae, ZX-24pe, ZX-24ne, ZX-24pu, ZX-24nu, ZX-24ru, ZX-24su
26, B.2
25, B.3
ZX-128e, ZX-128ne , ZX-1281e, ZX-1281ne
18, E.2
17, E.3
ZX-328nu
9, D.6
10, D.7
On the ZX-24 models, AIN0 is common with pin A.2 and AIN1 is common with pin A.0 so these I/O pins
will need to be configured to be inputs in high-impedance mode. Note, however, that ZX-24 models built
using boards earlier than Rev 5 (see the bottom side of the board), AIN1 has no external connection so
the negative input must be supplied via the analog multiplexor.
The table below shows the analog comparator input pins for generic ATtiny and ATmega targets.
Analog Comparator Input Pins for Generic ATtiny and Atmega Devices
Target Device
Pkg.
AIN0
Pin
AIN1
Pin
tiny24, tiny24A, tiny44, tiny44A, tiny84
P14
12, A.1
11, A.2
Q20
4, A.1
3, A.2
tiny48, tiny88
P28
12, D.6
13, D.7
T28
8, D.6
9, D.7
T32
10, D.6
11, D.7
tiny87, tiny167
P20
9, A.6
10, A.7
Q20
11, A.6
12, A.7
tiny2313, tiny2313A, tiny4313
P20
12, B.0
13, B.1
Q20
10, B.0
11, B.1
mega48, mega48A, mega48P, mega48PA, mega8, mega8A, mega88,
mega88A, mega88P, mega88PA, mega168, mega168A, mega168P,
mega168PA, mega328, mega328P
P28
12, D.6
13, D.7
T32
10, D.6
11, D.7
mega16, mega16A, mega164A, mega164P, mega164PA, mega32, mega32A,
mega324P, mega324PA, mega644, mega644A, mega644P, mega644PA,
mega1284P, mega161, mega162, mega163, mega323
P40
3, B.2
4, B.3
T44
42, B.2
43, B.3
mega8515, mega8535
P40
3, B.2
4, B.3
T44
42, B.2
43, B.3
L44
4, B.2
5, B.3
mega165, mega165A, mega165P, mega165PA, mega325, mega325P,
mega645, mega645A, mega645P, mega169, mega169A, mega169P,
mega169PA, mega329, mega329P, mega329PA, mega649, mega649A,
mega649P
T64
4, E.2
5, E.3
mega3250, mega3250P, mega6450, mega6450A, mega6450P,
mega3290, mega3290P, mega6490, mega6490A, mega6490P
T100
4, E.2
5, E.3
mega1281, mega2561, mega64, mega64A, mega128, mega128A,
AT90CAN32, AT90CAN64, AT90CAN128
T64
4, E.2
5, E.3
mega640, mega1280, mega2560
T100
4, E.2
5, E.3
mega8U2, mega16U2, mega32U2, AT90USB82, AT90USB162
T32
7, D.1
8, D.2
AT90USB646, AT90USB647, AT90USB1286, AT90USB1287
T64
1, E.6
2, E.7
mega16U4, mega32U4
T44
1, E.6
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