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ST72324BK2 Datasheet(PDF) 58 Page - STMicroelectronics

Part # ST72324BK2
Description  8-bit MCU, 3.8 to 5.5 V operating range with 8 to 32 Kbyte Flash/ROM, 10-bit ADC, 4 timers, SPI, SCI
PDF  188 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72324BK2 Datasheet(HTML) 58 Page - STMicroelectronics

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I/O ports
ST72324B
58/188
9.5.1
I/O port implementation
The I/O port register configurations are summarized Table 31.
Table 30.
I/O port interrupt control/wake-up capability
Interrupt event
Event flag
Enable Control bit Exit from WAIT Exit from HALT
External interrupt on selected
external event
-
DDRx, ORx
Yes
Yes
Table 31.
Port configuration
Port
Pin name
Input (DDR = 0)
Output (DDR = 1)
OR = 0
OR = 1
OR = 0
OR = 1
Port A
PA7:6
Floating
True open-drain (high sink)
PA5:4
Floating
Pull-up
Open drain
Push-pull
PA3
Floating
Floating interrupt
Open drain
Push-pull
Port B
PB3
Floating
Floating interrupt
Open drain
Push-pull
PB4, PB2:0
Floating
Pull-up
Open drain
Push-pull
Port C
PC7:0
Floating
Pull-up
Open drain
Push-pull
Port D
PD5:0
Floating
Pull-up
Open drain
Push-pull
Port E
PE1:0
Floating
Pull-up
Open drain
Push-pull
Port F
PF7:6, 4
Floating
Pull-up
Open drain
Push-pull
PF2:0
Floating
Pull-up
Open drain
Push-pull
Table 32.
I/O port register map and reset values
Address (Hex.)
Register label
7
654321
0
Reset value of all I/O port registers
0
000000
0
0000h
PADR
MSB
LSB
0001h
PADDR
0002h
PAOR
0003h
PBDR
MSB
LSB
0004h
PBDDR
0005h
PBOR
0006h
PCDR
MSB
LSB
0007h
PCDDR
0008h
PCOR
0009h
PDDR
MSB
LSB
000Ah
PDDDR
000Bh
PDOR



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