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C167CS Datasheet(PDF) 145 Page - Infineon Technologies AG

Part # C167CS
Description  16-Bit Single-Chip Microcontroller
PDF  517 Pages
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Manufacturer  INFINEON [Infineon Technologies AG]
Direct Link  http://www.infineon.com
Logo INFINEON - Infineon Technologies AG

C167CS Datasheet(HTML) 145 Page - Infineon Technologies AG

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C167CS
Derivatives
Parallel Ports
User’s Manual
7-18
V2.0, 2000-07
trigger an interrupt request in order to perform some special service routines. External
capture signals can only be applied if no address output is selected for PORT1.
During external accesses in demultiplexed bus modes PORT1 outputs the 16-bit
intra-segment address as an alternate output function.
During external accesses in multiplexed bus modes, when no BUSCON register selects
a demultiplexed bus mode, PORT1 is not used and is available for general purpose IO.
When an external bus mode is enabled, the direction of the port pin and the loading of
data into the port output latch are controlled by the bus controller hardware. The input of
the port output latch is disconnected from the internal bus and is switched to the line
labeled “Alternate Data Output” via a multiplexer. The alternate data is the 16-bit
intrasegment address. While an external bus mode is enabled, the user software should
not write to the port output latch, otherwise unpredictable results may occur. When the
external bus modes are disabled, the contents of the direction register last written by the
user becomes active.
Figure 7-8
PORT1 IO and Alternate Functions
MCA04425
P1H.7
P1H.6
P1H.5
P1H.4
P1H.3
P1H.2
P1H.1
P1H.0
P1L.7
P1L.6
P1L.5
P1L.4
P1L.3
P1L.2
P1L.1
P1L.0
Port 1
P1H
P1L
Alternate Function
General Purpose
Input/Output
A7
A6
A5
A4
A3
A2
A1
A0
8/16-Bit
Demux Bus
a)
b)
CAPCOM2
Inputs/Outputs
Analog Extension Inputs
CC24IO
CC25IO
CC26IO
CC27IO
A15
A14
A13
A12
A11
A10
A9
A8
AN23
AN22
AN21
AN20
AN19
AN18
AN17
AN16



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