st72321j STMicroelectronics, st72321j Datasheet - Page 9

• Manufacturer Part Number: st72321j
• Description: 8-bit Mcu With Nested Interrupts, Flash, 10-bit Adc, 5 Timers, Spi, Sci, I2c Interface
• Manufacturer: STMicroelectronics

PIN DESCRIPTION (Cont’d)
For external pin connection guidelines, refer to See “ELECTRICAL CHARACTERISTICS” on page 134.
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
Pin
– Input:
– Output:
n°
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
6
7
8
9
PB4 (HS)/ARTCLK
PD0/AIN0
PD1/AIN1
PD2/AIN2
PD3/AIN3
PD4/AIN4
PD5/AIN5
V
V
PF0/MCO/AIN8
PF1 (HS)/BEEP
PF2 (HS)
PF4/OCMP1_A/
AIN10
PF6 (HS)/ICAP1_A
PF7 (HS)/
EXTCLK_A
V
V
PC0/OCMP2_B/
AIN12
PC1/OCMP1_B/
AIN13
PC2 (HS)/ICAP2_B
PC3 (HS)/ICAP1_B
AREF
SSA
DD_0
SS_0
“I/O PORTS” on page 44
Pin Name
I = input, O = output, S = supply
A = Dedicated analog input
C
HS = 20mA high sink (on N-buffer only)
float = floating, wpu = weak pull-up, int = interrupt
OD = open drain
T
= CMOS 0.3V
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
S
S
Table
Level
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
DD
DD
HS
HS
HS
HS
HS
HS
HS
2)
for more details on the software configuration of the I/O ports.
1:
, PP = push-pull
/0.7V
/0.7V
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
DD
DD
X
X
X
X
X
X
X
X
X
X
X
X
X
Input
ei3
ei1
ei1
with input trigger
ei1
Port
X
X
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
function
Port B4
Port D0
Port D1
Port D2
Port D3
Port D4
Port D5
Analog Reference Voltage for ADC
Analog Ground Voltage
Port F0
Port F1
Port F2
Port F4
Port F6
Port F7
Digital Main Supply Voltage
Digital Ground Voltage
Port C0
Port C1
Port C2
Port C3
reset)
(after
Main
1)
, ana = analog
PWM-ART External Clock
ADC Analog Input 0
ADC Analog Input 1
ADC Analog Input 2
ADC Analog Input 3
ADC Analog Input 4
ADC Analog Input 5
Main clock out
(f
Beep signal output
Timer A Output
Compare 1
Timer A Input Capture 1
Timer A External Clock Source
Timer B Output
Compare 2
Timer B Output
Compare 1
Timer B Input Capture 2
Timer B Input Capture 1
OSC
/2)
Alternate Function
ADC Analog
Input 8
ADC Analog
Input 10
ADC Analog
Input 12
ADC Analog
Input 13
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