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UPSD3422 Datasheet(PDF) 72 Page - STMicroelectronics

Part # UPSD3422
Description  Turbo Plus Series Fast Turbo 8032 MCU with USB and Programmable Logic
PDF  293 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UPSD3422 Datasheet(HTML) 72 Page - STMicroelectronics

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I/O ports of mcu module
uPSD34xx
72/293
Figure 18.
MCU I/O cell block diagram for port 3
Figure 19.
MCU I/O cell block diagram for port 4
P3.X Pin
Digital_Pin_Data_In
Q
D
PRE
SFR
P3.X
Latch
8032 Data Bus Bit
GPIO P3.X SFR
Write Latch
MCU_Reset
P3.X SFR Read Latch
(for R-M-W instructions)
P3.X SFR Read Pin
Select_Alternate_Func
Disables High-Side Driver
IN 1
IN 0
Y
MUX
VCC
VCC
VCC
SEL
Enable_I
2
C
WEAK
PULL-UP, B
STONGER
PULL-UP, A
LOW
SIDE
HIGH
SIDE
DELAY,
1 MCU_CLK
DELAY,
1 MCU_CLK
Q
Digital_Alt_Func_Data_Out
AI09601
P4.X Pin
Digital_Pin_Data_In
Q
D
PRE
SFR
P4.X
Latch
8032 Data Bus Bit
GPIO P4.X SFR
Write Latch
MCU_Reset
P4.X SFR Read Latch
(for R-M-W instructions)
P4.X SFR Read Pin
Select_Alternate_Func
For PCA Alternate Function
IN 1
IN 0
Y
MUX
VCC
VCC
VCC
SEL
Enable_Push_Pull
WEAK
PULL-UP, B
STONGER
PULL-UP, A
LOW
SIDE
HIGH
SIDE
DELAY,
1 MCU_CLK
DELAY,
1 MCU_CLK
Q
Digital_Alt_Func_Data_Out
AI09602



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