st10f269z1 STMicroelectronics, st10f269z1 Datasheet - Page 88

• Manufacturer Part Number: st10f269z1
• Description: St10f269 16-bit Mcu With Mac Unit, 256k Byte Flash Memory And 12k Byte Ram
• Manufacturer: STMicroelectronics

12 - PARALLEL PORTS
The structure of Port 7 differs in the way the output
latches are connected to the internal bus and to
the pin driver. Pins P7.3...P7.0 (POUT3...POUT0)
Figure 40 : Block Diagram of Port 7 Pins P7.3...P7.0
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Read ODP7.y
Write ODP7.y
Write DP7.y
Open Drain
Port Output
Read DP7.y
Write DP7.y
Read P7.y
Direction
Latch
Latch
Latch
MUX
Port Data
Output
1
0
Alternate
Data
Output
EXOR
EXOR the alternate data output with the port latch
output, which allows to use the alternate data
directly or inverted at the pin driver.
=1
Clock
Latch
Input
Output
Buffer
y = 0...3
P7.y/POUTy
ST10F269