ST72E331 ST72T331
1.2 PIN DESCRIPTION
Figure 2. 64-Pin Thin QFP Package Pinout
NC
NC
PE1/RDI
PE0/TDO
V
DD_2
OSCIN
OSCOUT
V
SS_2
NC
NC
RESET
TEST/V
PP 1)
PA7
PA6
PA5
PA4
Figure 4. 44-Pin Thin QFP Package Pinout
PE4
PE5
PE6
PE7
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
AIN0/PD0
AIN1/PD1
AIN2/PD2
AIN3/PD3
AIN4/PD4
AIN5/PD5
AIN6/PD6
AIN7/PD7
V
DDA
V
SSA
V
DD_3
V
SS_3
CLKOUT/PF0
PF1
PF2
NC
OCMP1_A/PF4
NC
ICAP1_A/PF6
EXTCLK_A/PF7
1. V
PP
on EPROM/OTP only
1. V
PP
on EPROM/OTP only
Figure 3. 56-Pin Shrink DIP Package Pinout
PB4
PB5
PB6
PB7
AIN0/PD0
AIN1/PD1
AIN2/PD2
AIN3/PD3
AIN4/PD4
AIN5/PD5
AIN6/PD6
AIN7/PD7
V
DDA
V
SSA
CLKOUT/PF0
PF1
PF2
OCMP1_A/PF4
ICAP1_A/PF6
EXTCLK_A/PF7
V
DD_0
V
SS_0
PC0/OCMP2_B
PC1/OCMP1_B
PC2/ICAP2_B
PC3/ICAP1_B
PC4/MISO
PC5/MOSI
1. V
PP
on EPROM/OTP only
Figure 5. 42-Pin Shrink DIP Package Pinout
1 (EI3)
2 (EI3)
3 (EI3)
4 (EI3)
5
6
7
8
9
10
11
12
13
14
15 (EI1)
16 (EI1)
17 (EI1)
18
19
20
21
22
23
24
25
26
27
28
(EI2) 56
(EI2) 55
(EI2) 54
(EI2) 53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
(EI0) 34
(EI0) 33
(EI0) 32
(EI0) 31
30
29
PB3
PB2
PB1
PB0
PE7
PE6
PE5
PE4
PE1/RDI
PE0/TD0
V
DD_2
OSCIN
OSCOUT
V
SS_2
RESET
TEST/V
PP1)
PA7
PA6
PA5
PA4
V
SS_1
V
DD_1
PA3
PA2
PA1
PA0
PC7/SS
PC6/SCK
1. V
PP
PB4
AIN0/PD0
AIN1/PD1
AIN2/PD2
AIN3/PD3
AIN4/PD4
AIN5/PD5
V
DDA
V
SSA
CLKOUT/PF0
PF1
PF2
OCMP1_A/PF4
ICAP1_A/PF6
EXTCLK_A/PF7
PC0/OCMP2_B
PC1/OCMP1_B
PC2/ICAP2_B
PC3/ICAP1_B
PC4/MISO
PC5/MOSI
AIN5/PD5
V
DDA
V
SSA
CLKOUT/PF0
PF1
PF2
OCMP1_A/PF4
ICAP1_A/PF6
EXTCLK_A/PF7
V
DD_0
V
SS_0
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
48
1
47
2
(EI0) 46
3
(EI0) 45
4
(EI0) 44
5 (EI2)
(EI0) 43
6 (EI2)
7 (EI2)
42
8 (EI2)
41
9 (EI3)
40
10 (EI3)
39
11 (EI3)
38
12 (EI3)
37
13
36
14
35
15
34
16
33
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
(EI1)
(EI1)
(EI1)
V
SS_1
V
DD_1
PA3
PA2
PA1
PA0
PC7/SS
PC6/SCK
PC5/MOSI
PC4/MISO
PC3/ICAP1_B
PC2/ICAP2_B
PC1/OCMP1_B
PC0/OCMP2_B
V
SS_0
V
DD_0
PE1/RDI
PB0
PB1
PB2
PB3
PB4
AIN0/PD0
AIN1/PD1
AIN2/PD2
AIN3/PD3
AIN4/PD4
44 43 42 41 40 39 38 37 36 35 34
33
1
32
(EI2)
2
(EI0) 31
(EI2)
3
30
4 (EI2)
(EI2)
29
5
(EI3)
28
6
27
7
26
8
25
9
24
10
23
11
12 13 14 15 16 17 18 19 20 21 22
(EI1)
(EI1)
(EI1)
RESET
TEST/V
PP1)
PA7
PA6
PA5
PA4
PE0/TD0
V
DD_2
OSCIN
OSCOUT
V
SS_2
V
SS_1
V
DD_1
PA3
PC7/SS
PC6/SCK
PC5/MOSI
PC4/MISO
PC3/ICAP1_B
PC2/ICAP2_B
PC1/OCMP1_B
PC0/OCMP2_B
1 (EI3)
2
3
4
5
6
7
8
9
10 (EI1)
11 (EI1)
12 (EI1)
13
14
15
16
17
18
19
20
21
(EI2)
(EI2)
(EI2)
(EI2)
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
(EI0)
24
23
22
PB3
PB2
PB1
PB0
PE1/RDI
PE0/TD0
V
DD_2
OSCIN
OSCOUT
V
SS_2
RESET
TEST/V
PP1)
PA7
PA6
PA5
PA4
V
SS_1
V
DD_1
PA3
PC7/SS
PC6/SCK
on EPROM/OTP only
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