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ST72E311N4D0 Datasheet(PDF) 29 Page - STMicroelectronics

No. de pieza ST72E311N4D0
Descripción Electrónicos  8-BIT MCU WITH 8 TO 16K OTP/EPROM, 384 TO 512 BYTES RAM, ADC, WDG, SCI, SPI AND 2 TIMERS
PDF  100 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72E311N4D0 Datasheet(HTML) 29 Page - STMicroelectronics

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ST72E311 ST72T311
I/O PORTS (Cont’d)
Table 11. Port Configuration
Notes:
1. ST72T311N only
2. For OTP/EPROM version, when OR=0: floating & when OR=1: reserved
3. For OTP/EPROM version, when OR=0: open-drain, high sink capability & when OR=1: reserved
* Reset state (The bits corresponding to unavailable pins are forced to 1 by hardware, this affects the reset status value).
Warning: All bits of the DDR register which correspond to unconnected I/Os must be left at their reset val-
ue. They must not be modified by the user otherwise a spurious interrupt may be generated.
Port
Pin name
Input (DDR = 0)
Output (DDR = 1)
OR = 0
OR = 1
OR = 0
OR =1
Port A
PA0:PA2 1)
floating*
pull-up with interrupt
open-drain
push-pull
PA3
floating*
pull-up with interrupt
open-drain
push-pull
PA4:PA7
floating*
true open drain, high sink capability
Port B
PB0:PB4
floating*
pull-up with interrupt
open-drain
push-pull
PB5:PB7 1)
floating*
pull-up with interrupt
open-drain
push-pull
Port C
PC0:PC7
floating*
pull-up
open-drain
push-pull
Port D
PD0:PD5
floating*
pull-up
open-drain
push-pull
PD6:PD7 1)
floating*
pull-up
open-drain
push-pull
Port E
PE0:PE1
floating*
pull-up
open-drain
push-pull
PE4:PE7 1)
floating*2)
true open drain,
high sink capability3)
Port F
PF0:PF2
floating*
pull-up with interrupt
open-drain
push-pull
PF4, PF6, PF7
floating*
pull-up
open-drain
push-pull
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