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ST72325 Datasheet(PDF) 54 Page - STMicroelectronics

Part # ST72325
Description  8-bit MCU with 16 to 60K Flash/ROM, ADC, CSS, 5 timers, SPI, SCI, I2C interface
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72325 Datasheet(HTML) 54 Page - STMicroelectronics

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I/O PORTS (Cont’d)
9.5.1 I/O Port Implementation
The I/O port register configurations are summa-
rised as follows.
Standard Ports
PA5:4, PC7:0, PD7:0, PE7:3,
PE1:0, PF7:3,
Interrupt Ports
PA2:0, PB6:5, PB4, PB2:0, PF1:0 (with pull-up)
True Open Drain Ports
PA7:6
Pull-Up Input Port PE2
Table 13. Port Configuration
*Pull-up always activated on PE2.
MODE
DDR
OR
floating input
0
0
pull-up input
0
1
open drain output
1
0
push-pull output
1
1
MODE
DDR
OR
floating input
0
0
pull-up interrupt input
0
1
open drain output
1
0
push-pull output
1
1
MODE
DDR
OR
floating input
0
0
floating interrupt input
0
1
open drain output
1
0
push-pull output
1
1
MODE
DDR
floating input
0
open drain (high sink ports)
1
MODE
DDR
OR
pull-up input
0
x
open drain output*
1
0
push-pull output*
1
1
Port
Pin name
Input
Output
OR = 0
OR = 1
OR = 0
OR = 1
Port A
PA7:6
floating
true open-drain
PA5:4
floating
pull-up
open drain
push-pull
PA3
floating
floating interrupt
open drain
push-pull
PA2:0
floating
pull-up interrupt
open drain
push-pull
Port B
PB7, PB3
floating
floating interrupt
open drain
push-pull
PB6:5, PB4,
PB2:0
floating
pull-up interrupt
open drain
push-pull
Port C
PC7:0
floating
pull-up
open drain
push-pull
Port D
PD7:0
floating
pull-up
open drain
push-pull
Port E
PE7:3, PE1:0
floating
pull-up
open drain
push-pull
PE2
pull-up input only
open drain*
push-pull*
Port F
PF7:3
floating
pull-up
open drain
push-pull
PF2
floating
floating interrupt
open drain
push-pull
PF1:0
floating
pull-up interrupt
open drain
push-pull


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