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ST10F269ZX Datasheet(PDF) 71 Page - STMicroelectronics

Part # ST10F269ZX
Description  16-BIT MCU WITH MAC UNIT, 128K to 256K BYTE FLASH MEMORY AND 12K BYTE RAM
PDF  184 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST10F269ZX Datasheet(HTML) 71 Page - STMicroelectronics

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ST10F269
12 - PARALLEL PORTS
71/184
The pins of Port 2 combine internal bus data with alternate data output before the port latch input.
12.6 - Port 3
If this 15-bit port is used for general purpose I/O,
the direction of each line can be configured by the
corresponding direction register DP3. Most port
lines can be switched into push-pull or open drain
mode by the open drain control register ODP2
Figure 26 : Block Diagram of a Port 2 Pin
Open Drain
Latch
Write ODP2.y
Read ODP2.y
Direction
Latch
Write DP2.y
Read DP2.y
MUX
0
1
Alternate Data Input
Input
Latch
Clock
P2.y
CCyIO
Output
Buffer
x = 7...0
Alternate
Data
Output
MUX
0
1
Output
Latch
≥ 1
Write Port P2.y
Compare Trigger
Read P2.y
Fast External Interrupt Input
EXxIN
y = 15...0



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