st10f269z1 STMicroelectronics, st10f269z1 Datasheet - Page 92

• 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 8 differs in the way the output
latches are connected to the internal bus and to
the pin driver (see Figure 43). Pins P8.7...P8.0
Figure 43 : Block Diagram of Port 8 Pins P8.7...P8.0
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Write Port P8.y
Compare Trigger
Alternate
Data
Output
Write ODP8.y
Read ODP8.y
Write DP8.y
Open Drain
Read DP8.y
Read P8.y
Direction
Latch
Latch
1
0
MUX
1
Output
Latch
Alternate Latch
Data Input
MUX
(CC23IO...CC16IO) combine internal bus data
and alternate data output before the port latch
input, as do the Port 2 pins.
1
0
Alternate Pin
Data Input
Clock
Latch
Input
Output
Buffer
y = (7...0)
z = (16...23)
ST10F269
P8.y
CCzIO