st10f269z1 STMicroelectronics, st10f269z1 Datasheet - Page 71
st10f269z1
Manufacturer Part Number
st10f269z1
Description
St10f269 16-bit Mcu With Mac Unit, 256k Byte Flash Memory And 12k Byte Ram
Manufacturer
STMicroelectronics
Datasheet
1.ST10F269Z1.pdf
(184 pages)
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ST10F269
The pins of Port 2 combine internal bus data with alternate data output before the port latch input.
Figure 26 : Block Diagram of a Port 2 Pin
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
Write Port P2.y
Compare Trigger
Alternate
Data
Output
Write ODP2.y
Read ODP2.y
Write DP2.y
Open Drain
Read DP2.y
Read P2.y
Direction
Latch
Latch
1
0
MUX
Fast External Interrupt Input
1
Alternate Data Input
Output
Latch
MUX
corresponding direction register DP3. Most port
lines can be switched into push-pull or open drain
mode by the open drain control register ODP2
1
0
Clock
Latch
Input
12 - PARALLEL PORTS
Output
Buffer
x = 7...0
y = 15...0
P2.y
CCyIO
EXxIN
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