ST72321AR STMICROELECTRONICS [STMicroelectronics], ST72321AR Datasheet - Page 10

• Manufacturer Part Number: ST72321AR
• Description: 64/44-PIN 8-BIT MCU WITH 32 TO 60K FLASH/ROM, ADC,FIVE TIMERS, SPI, SCI, I2C INTERFACE
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

ST72321
PIN DESCRIPTION (Cont’d)
For external pin connection guidelines, refer to See “ELECTRICAL CHARACTERISTICS” on page 138.
Legend / Abbreviations for
Type:
Input level:
In/Output level: C = CMOS 0.3V
Output level:
Port and control configuration:
Refer to
The RESET configuration of each pin is shown in bold. This configuration is valid as long as the device is
in reset state.
Table 1. Device Pin Description
10/189
10
11
12
13
14
15
16 10 PD3/AIN3
17 11 PD4/AIN4
18 12 PD5/AIN5
19
20
21 13 V
22 14 V
23
– Input:
– Output:
Pin n°
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
-
-
-
-
-
-
-
-
-
-
“I/O PORTS” on page 46
PE4 (HS)
PE5 (HS)
PE6 (HS)
PE7 (HS)
PB0/PWM3
PB1/PWM2
PB2/PWM1
PB3/PWM0
PB4 (HS)/ARTCLK
PB5 / ARTIC1
PB6 / ARTIC2
PB7
PD0/AIN0
PD1/AIN1
PD2/AIN2
PD6/AIN6
PD7/AIN7
V
AREF
SSA
DD_3
Pin Name
I = input, O = output, S = supply
A = Dedicated analog input
C
T
HS = 20mA high sink (on N-buffer only)
float = floating, wpu = weak pull-up, int = interrupt
OD = open drain
T
T
= TTL 0.8V / 2V with Schmitt trigger
= CMOS 0.3V
Table
I/O C
I/O C
I/O C
I/O C
I/O C
I/O C
I/O C
I/O C
I/O C
I/O C
I/O C
I/O C
I/O C
I/O C
I/O C
I/O C
I/O C
I/O C
I/O C
I/O C
S
S
DD
I
DD
2)
for more details on the software configuration of the I/O ports.
1:
, PP = push-pull
/0.7V
/0.7V
Level
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
HS
HS
HS
HS
HS
DD
DD
with input trigger
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Input
ei2
ei2
ei2
ei3
ei3
ei3
ei2
ei3
Port
X
X
X
X
X
X
X
X
Output
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
1)
, ana = analog
function
Port E4
Port E5
Port E6
Port E7
Port B0
Port B1
Port B2
Port B3
Port B4
Port B5
Port B6
Port B7
Port D0
Port D1
Port D2
Port D3
Port D4
Port D5
Port D6
Port D7
Analog Reference Voltage for ADC
Analog Ground Voltage
Digital Main Supply Voltage
reset)
(after
Main
PWM Output 3
PWM Output 2
PWM Output 1
PWM Output 0
PWM-ART External Clock
PWM-ART Input Capture 1
PWM-ART Input Capture 2
ADC Analog Input 0
ADC Analog Input 1
ADC Analog Input 2
ADC Analog Input 3
ADC Analog Input 4
ADC Analog Input 5
ADC Analog Input 6
ADC Analog Input 7
Alternate function