ST72321B STMICROELECTRONICS [STMicroelectronics], ST72321B Datasheet - Page 11

• Manufacturer Part Number: ST72321B
• Description: 64/44-pin 8-bit MCU with 32 to 60K Flash/ROM, ADC, five timers, SPI, SCI, I2C interface
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

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 2. Device Pin Description
10
11
12
13
14
15
16 10
17 11
18 12
19
20
21 13
22 14
– Input:
– Output:
1
2
3
4
5
6
7
8
9
Pin n°
2
3
4
5
6
7
8
9
-
-
-
-
-
-
-
-
-
“I/O PORTS” on page 46
28 PB0/PWM3
29 PB3/PWM0
30 PB4 (HS)/ARTCLK
31 PD0/AIN0
32 PD1/AIN1
1
2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PE4 (HS)
PE5 (HS)
PE6 (HS)
PE7 (HS)
PB1/PWM2
PB2/PWM1
PB5 / ARTIC1
PB6 / ARTIC2
PB7
PD2/AIN2
PD3/AIN3
PD4/AIN4
PD5/AIN5
PD6/AIN6
PD7/AIN7
V
V
AREF
SSA
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
Pin Name
T
= TTL 0.8V / 2V with Schmitt trigger
= CMOS 0.3V
Table 2
DD
DD
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
2)
for more details on the software configuration of the I/O ports.
S
I
, 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
DD
DD
HS
HS
HS
HS
HS
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
1)
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
, ana = analog
function
Port B3
Port B7
Port E4
Port E5
Port E6
Port E7
Port B0
Port B1
Port B2
Port B4
Port B5
Port B6
Port D0
Port D1
Port D2
Port D3
Port D4
Port D5
Port D6
Port D7
Analog Reference Voltage for ADC
Analog Ground 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
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