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ST72C171 Fiches technique(PDF) 32 Page - STMicroelectronics

No de pièce ST72C171
Description  8-BIT MCU with 8K FLASH, ADC, WDG, SPI, SCI, TIMERS SPGAs Software Programmable Gain Amplifiers, OP-AMP
PDF  152 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72C171 Fiches technique(HTML) 32 Page - STMicroelectronics

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I/O PORTS (Cont’d)
Figure 26
. I/O Block Diagram
Table 5. Port Mode Configuration
Legend:
0 -
present, not activated
1 -
present and activated
Notes:
– No OR Register on some ports (see register map).
– ADC Switch on ports with analog alternate functions.
DR
DDR
LATCH
LATCH
DR SEL
DDR SEL
VDD
PAD
ANALOG
SWITCH
ANALOG ENABLE
(ADC)
M
U
X
ALTERNATE
ALTERNATE
ALTERNATE ENABLE
ALTERNATE
M
U
X
ALTERNATE INPUT
PULL-UP (SEE TABLE BELOW)
OUTPUT
P-BUFFER
(SEE TABLE BELOW)
N-BUFFER
1
0
1
0
OR
LATCH
OR SEL
FROM
OTHER
BITS
EXTERNAL
PULL-UP
CONDITION
ENABLE
ENABLE
GND
(SEE TABLE BELOW)
(SEE NOTE BELOW)
CMOS
SCHMITT TRIGGER
SOURCE (EIx)
INTERRUPT
SENSITIVITY
SEL
Configuration Mode
Pull-up
P-buffer
Floating
0
0
Pull-up
1
0
Push-pull
0
1
True Open Drain
not present
not present
Open Drain (logic level)
0
0



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