參數(shù)資料
型號： ST72171
英文描述： 8-BIT MCU WITH 8K FLASH. ADC. WDG. SPI. SCI. TIMERS SPGAS (SOFTWARE PROGRAMMABLE GAIN AMPLIFIERS). OP-AMP
中文描述： 8位8K閃存微控制器。 ADC的。水分散粒劑。的SPI。脊髓損傷。定時器SPGAS（軟件可編程增益放大器）。運放
文件頁數(shù)： 26/93頁
文件大小： 915K
代理商： ST72171
26/93
ST72E121 ST72T121
I/O PORTS
(Cont’d)
Figure 19
.
I/O Block Diagram
Table 9. Port Mode Configuration
Configuration Mode
Floating
Pull-up
Push-pull
True Open Drain
Open Drain (logic level)
Legend
:
0 -
1 -
present, not activated
present and activated
Notes
:
– No OR Register on some ports (see register map).
– ADC Switch on ports with analog alternate functions.
DR
LATCH
DDR
LATCH
D
DR SEL
DDR SEL
V
DD
PAD
ANALOG
SWITCH
ANALOG ENABLE
(ADC)
M
U
X
ALTERNATE
ENABLE
ALTERNATE
ENABLE
ALTERNATE ENABLE
1
C
ALTERNATE
OUTPUT
M
U
X
ALTERNATE INPUT
PULL-UP
P-BUFFER
(S
EE
T
ABLE
B
ELOW
)
N-BUFFER
0
1
0
OR
LATCH
OR SEL
FROM
OTHER
BITS
EXTERNAL
INTERRUPT
PULL-UP
CONDITION
GND
(S
EE
T
ABLE
BELOW
)
(S
EE
N
OTE
BELOW
)
CMOS
SCHMITT TRIGGER
SOURCE (EIx)
POLARITY
SEL
GND
V
DD
D
IODE
(S
EE
T
ABLE
BELOW
)
Pull-up
0
1
0
not present
0
P-buffer
0
0
1
not present
0
V
DD
Diode
1
1
1
not present
1
26
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