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PSD4235G2 Datenblatt(PDF) 55 Page - STMicroelectronics

Teilenummer PSD4235G2
Bauteilbeschribung  Flash In-System-Programmable Peripherals for 16-Bit MCUs
PDF  93 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
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PSD4235G2 Datenblatt(HTML) 55 Page - STMicroelectronics

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PSD4000 Series
Preliminary Information
52
The
PSD4000
Functional
Blocks
(cont.)
9.4.5 Ports A, B and C – Functionality and Structure
Ports A and B have similar functionality and structure, as shown in Figure 21. The two
ports can be configured to perform one or more of the following functions:
t MCU I/O Mode
t GPLD Output – Combinatorial PLD outputs.
t PLD Input
– Input to the PLDs.
t Address In – Additional high address inputs may be latched by ALE.
t Open Drain/Slew Rate – pins PC[7:0]can be configured to fast slew rate,
pins PA[7:0] and PB[7:0] can be configured to Open Drain
Mode.
DATA OUT
REG.
DQ
DQ
WR
WR
READ MUX
GPLD OUTPUT
P
D
B
PLD INPUT
DIR REG.
DATA IN
OUTPUT
SELECT
OUTPUT
MUX
PORT PIN
DATA OUT
Figure 21. Port A, B and C



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