ST72E331 ST72T331
Pin n° Pin n°
QFP64 SDIP56
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
43
44
45
46
47
48
32
33
34
35
36
37
38
39
40
41
42
PA1
PA2
PA3
Pin Name
Type
I/O
I/O
I/O
S
S
I/O
I/O
I/O
I/O
Port A1
Port A2
Port A3
Description
Remarks
External Interrupt: EI0
External Interrupt: EI0
External Interrupt: EI0
V
DD_1
V
SS_1
PA4
PA5
PA6
PA7
TEST/V
PP
RESET
NC
NC
V
SS_2
OSCOUT
OSCIN
V
DD_2
PE0/TDO
PE1/RDI
NC
NC
1)
Main power supply
Ground
Port A4
Port A5
Port A6
Port A7
High Sink
High Sink
High Sink
High Sink
S
I/O
Test mode pin . In the EPROM programming
This pin must be tied
mode, this pin acts as the programming voltage
low in user mode
input V
PP.
Bidirectional. Active low. Top priority non maskable interrupt.
Not Connected
Not Connected
Ground
Input/Output Oscillator pin. These pins connect a parallel-resonant
crystal, or an external source to the on-chip oscillator.
Main power supply
Port E1 or SCI Transmit Data Out
Port E1 or SCI Receive Data In
Not Connected
Not Connected
S
O
I
S
I/O
I/O
Note 1: V
PP
on EPROM/OTP only.
Table 2. ST72T331Jx Pin Description
Pin n° Pin n°
QFP44 SDIP42
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
38
39
40
41
42
1
2
3
4
5
6
7
8
9
10
11
12
Pin Name
PE1/RDI
PB0
PB1
PB2
PB3
PB4
PD0/AIN0
PD1/AIN1
PD2/AIN2
PD3/AIN3
PD4/AIN4
PD5/AIN5
V
DDA
V
SSA
PF0/CLKOUT
PF1
PF2
Type
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
S
S
I/O
I/O
I/O
Description
Port E1 or SCI Receive Data In
Port B0
Port B1
Port B2
Port B3
Port B4
Port D0 or ADC Analog Input 0
Port D1 or ADC Analog Input 1
Port D2 or ADC Analog Input 2
Port D3 or ADC Analog Input 3
Port D4 or ADC Analog Input 4
Port D5 or ADC Analog Input 5
Power Supply for analog peripheral (ADC)
Ground for analog peripheral (ADC)
Port F0 or CPU Clock Output
Port F1
Port F2
Remarks
External Interrupt: EI2
External Interrupt: EI2
External Interrupt: EI2
External Interrupt: EI2
External Interrupt: EI3
External Interrupt: EI1
External Interrupt: EI1
External Interrupt: EI1
8/107
8
STMICROELECTRONICS [ STMICROELECTRONICS ]
