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ST72521M Datasheet(HTML) 5 Page - STMicroelectronics

Part No. ST72521M
Description  8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, FIVE TIMERS, SPI, SCI, I2C, CAN INTERFACE
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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ST72521M Datasheet(HTML) 5 Page - STMicroelectronics

 
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ST72521M/R/AR
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PIN DESCRIPTION (Cont’d)
Legend / Abbreviations for Table 1:
Type:
I = input, O = output, S = supply
Input level:
A = Dedicated analog input
In/Output level: C = CMOS 0.3VDD/0.7VDD
CT= CMOS 0.3VDD/0.7VDD with input trigger
TT= 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
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 n
°
Pin Name
Level
Port
Main
function
(after
reset)
Alternate function
Input
Outpu t
1
1
PE4 (HS)
I/O CT HS
X
X
X
X
Port E4
2
2
PE5 (HS)
I/O CT HS
X
X
X
X
Port E5
3
3
PE6 (HS)
I/O CT HS
X
X
X
X
Port E6
4
4
PE7 (HS)
I/O CT HS
X
X
X
X
Port E7
5
5
PB0/PWM3
I/O CT
X
ei
2
X
X
Port B0
PWM Output 3
6
6
PB1/PWM2
I/O CT
X
ei
2
X
X
Port B1
PWM Output 2
7
7
PB2/PWM1
I/O CT
X
ei
2
X
X
Port B2
PWM Output 1
8
8
PB3/PWM0
I/O CT
X
ei2
X
X
Port B3
PWM Output 0
9
-
PG0
I/O TT
X
X
X
X
Port G0
10
-
PG1
I/O TT
X
X
X
X
Port G1
11
-
PG2
I/O TT
X
X
X
X
Port G2
12
-
PG3
I/O TT
X
X
X
X
Port G3
13
9
PB4 (HS)/ARTCLK
I/O CT HS
X
ei3
X
X
Port B4
PWM-ART External Clock
14
10
PB5/ARTIC1
I/O CT
X
ei3
X
X
Port B5
PWM-ART Input Capture 1
15
11
PB6/ARTIC2
I/O CT
X
ei3
X
X
Port B6
PWM-ART Input Capture 2
16
12
PB7
I/O CT
X
ei3
X
X
Port B7
17
13
PD0 /AIN0
I/O CT
X
X
X
X
X
Port D0
ADC Analog Input 0
18
14
PD1/AIN1
I/O CT
X
X
X
X
X
Port D1
ADC Analog Input 1
19
15
PD2/AIN2
I/O CT
X
X
X
X
X
Port D2
ADC Analog Input 2
20
16
PD3/AIN3
I/O CT
X
X
X
X
X
Port D3
ADC Analog Input 3
21
-
PG6
I/O TT
X
X
X
X
Port G6
22
-
PG7
I/O TT
X
X
X
X
Port G7
23
17
PD4/AIN4
I/O CT
X
X
X
X
X
Port D4
ADC Analog Input 4
24
18
PD5/AIN5
I/O CT
X
X
X
X
X
Port D5
ADC Analog Input 5
25
19
PD6/AIN6
I/O CT
X
X
X
X
X
Port D6
ADC Analog Input 6
26
20
PD7/AIN7
I/O CT
X
X
X
X
X
Port D7
ADC Analog Input 7


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