Datasheet

ST72321Rx ST72321ARx ST72321Jx
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PIN DESCRIPTION (Cont’d)
For external pin connection guidelines, refer to See “ELECTRICAL CHARACTERISTICS” on page 138.
Legend / Abbreviations for Table 2 :
Type: I = input, O = output, S = supply
Input level: A = Dedicated analog input
In/Output level: C = CMOS 0.3V
DD
/0.7V
DD
C
T
= CMOS 0.3V
DD
/0.7V
DD
with input trigger
T
T
= TTL 0.8V / 2V with Schmitt trigger
Output level: HS = 20mA high sink (on N-buffer only)
Port and control configuration:
– Input: float = floating, wpu = weak pull-up, int = interrupt
1)
, ana = analog
– Output: OD = open drain
2)
, PP = push-pull
Refer to “I/O PORTS” on page 46 for more details on the software configuration of the I/O ports.
The RESET configuration of each pin is shown in bold. This configuration is valid as long as the device is
in reset state.
Table 2. Device Pin Description
Pin n°
Pin Name
Type
Level Port
Main
function
(after
reset)
Alternate function
LQFP64 LQFP44 LQFP32
Input
Output
Input Output
float
wpu
int
ana
OD
PP
1 - - PE4 (HS) I/O C
T
HS X XXXPort E4
2 - - PE5 (HS) I/O C
T
HS X XXXPort E5
3 - - PE6 (HS) I/O C
T
HS X XXXPort E6
4 - - PE7 (HS) I/O C
T
HS X XXXPort E7
5 2 28 PB0/PWM3 I/O C
T
X ei2 X X Port B0 PWM Output 3
6 3 - PB1/PWM2 I/O C
T
X ei2 X X Port B1 PWM Output 2
7 4 - PB2/PWM1 I/O C
T
X ei2 X X Port B2 PWM Output 1
8 5 29 PB3/PWM0 I/O C
T
X ei2 X X Port B3 PWM Output 0
9 6 30 PB4 (HS)/ARTCLK I/O C
T
HS X ei3 X X Port B4 PWM-ART External Clock
10 - - PB5 / ARTIC1 I/O C
T
X ei3 X X Port B5 PWM-ART Input Capture 1
11 - - PB6 / ARTIC2 I/O C
T
X ei3 X X Port B6 PWM-ART Input Capture 2
12 - - PB7 I/O C
T
X ei3 X X Port B7
13 7 31 PD0/AIN0 I/O C
T
X X X X X Port D0 ADC Analog Input 0
14 8 32 PD1/AIN1 I/O C
T
X X X X X Port D1 ADC Analog Input 1
15 9 - PD2/AIN2 I/O C
T
X X X X X Port D2 ADC Analog Input 2
16 10 - PD3/AIN3 I/O C
T
X X X X X Port D3 ADC Analog Input 3
17 11 - PD4/AIN4 I/O C
T
X X X X X Port D4 ADC Analog Input 4
18 12 - PD5/AIN5 I/O C
T
X X X X X Port D5 ADC Analog Input 5
19 - - PD6/AIN6 I/O C
T
X X X X X Port D6 ADC Analog Input 6
20 - - PD7/AIN7 I/O C
T
X X X X X Port D7 ADC Analog Input 7
21 13 1 V
AREF
I Analog Reference Voltage for ADC
22 14 2 V
SSA
S Analog Ground Voltage