Specifications

ST72325xx
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Table 3. LQFP32/DIP32 Device Pin Description
Pin n°
Pin Name
Type
Level Port
Main
function
(after
reset)
Alternate function
LQFP32
DIP32
Input
Output
Input Output
float
wpu
int
ana
OD
PP
14V
AREF
6)
I Analog Reference Voltage for ADC
25V
SSA
6)
S Analog Ground Voltage
3 6 PF0/MCO/AIN8 I/O C
T
X ei1 X X X Port F0
Main clock out
(f
OSC
/2)
ADC Analog
Input 8
4 7 PF1 (HS)/BEEP I/O C
T
HS X ei1 X X Port F1 Beep signal output
58
PF4/OCMP1_A/
AIN10
I/O C
T
X XXXXPort F4
Timer A Output
Compare 1
ADC Analog
Input 10
6 9 PF6 (HS)/ICAP1_A I/O C
T
HS X X X X Port F6 Timer A Input Capture 1
710
PF7 (HS)/
EXTCLK_A
I/O C
T
HS X X X X Port F7 Timer A External Clock Source
811
PC0/OCMP2_B/
AIN12
I/O C
T
X XXXXPort C0
Timer B Output
Compare 2
ADC Analog
Input 12
912
PC1/OCMP1_B/
AIN13
I/O C
T
X XXXXPort C1
Timer B Output
Compare 1
ADC Analog
Input 13
10 13 PC2 (HS)/ICAP2_B I/O C
T
HS X X X X Port C2 Timer B Input Capture 2
11 14 PC3 (HS)/ICAP1_B I/O C
T
HS X X X X Port C3 Timer B Input Capture 1
12 15
PC4/MISO/ICCDA-
TA
I/O C
T
X XXXPort C4
SPI Master In /
Slave Out Data
ICC Data Input
13 16 PC5/MOSI/AIN14 I/O C
T
X XXXXPort C5
SPI Master Out /
Slave In Data
ADC Analog
Input 14
14 17 PC6/SCK/ICCCLK I/O C
T
X X X X Port C6 SPI Serial Clock
ICC Clock
Output
15 18 PC7/SS
/AIN15 I/O C
T
X XXXXPort C7
SPI Slave Select
(active low)
ADC Analog
Input 15
16 19 PA3 (HS) I/O C
T
HS X ei0 X X Port A3
17 20 PA4 (HS) I/O C
T
HS X XXXPort A4
18 21 PA6 (HS)/SDAI I/O C
T
HS X TPort A6 I
2
C Data
1)
19 22 PA7 (HS)/SCLI I/O C
T
HS X TPort A7 I
2
C Clock
1)
20 23 V
PP
/ ICCSEL I
Must be tied low. In flash programming
mode, this pin acts as the programming
voltage input V
PP
. See Section 12.9.2 for
more details. High voltage must not be ap-
plied to ROM devices
21 24 RESET
I/O C
T
Top priority non maskable interrupt.
22 25 V
SS_2
6)
S Digital Ground Voltage
23 26 OSC2
3)
I/O Resonator oscillator inverter output
24 27 OSC1
3)
I
External clock input or Resonator oscillator
inverter input
25 28 V
DD_2
6)
S Digital Main Supply Voltage
26 29 PE0/TDO I/O C
T
X X X X Port E0 SCI Transmit Data Out
27 30 PE1/RDI I/O C
T
X X X X Port E1 SCI Receive Data In