SAF-C164SM Infineon Technologies, SAF-C164SM Datasheet - Page 152

• Manufacturer Part Number: SAF-C164SM
• Description: 16-Bit CMOS Microcontroller
• Manufacturer: Infineon Technologies

DP1L
P1L Direction Ctrl. Register
DP1H
P1H Direction Ctrl. Register
Bit
DP1X.y
Alternate Functions of PORT1
When a demultiplexed external bus is enabled, PORT1 is used as address bus.
Note that demultiplexed bus modes use PORT1 as a 16-bit port. Otherwise, all 16 port
lines can be used for general purpose IO.
The lower 11 pins of PORT1 (P1H.2 … P1L.0) serve as the inputs/outputs for the
CAPCOM6 unit.
Pins P1H.3 … P1H.0 accept the fast external inputs. P1H.3 also serves as input for timer
T7.
The upper eight pins of PORT1 (P1H.7 … P1H.0) also serve as capture inputs or
compare outputs for the CAPCOM2 unit (CC27IO … CC24IO, CC31IO … CC28IO).
As all other capture inputs, the capture input function of pins P1H.7 … P1H.0 can also
be used as external interrupt inputs (sample rate 16 TCL).
As a side benefit, the capture input capability of these lines can also be used in the
address bus mode. In this way, changes to the upper address lines could be detected
and could trigger an interrupt request in order to perform some special service routines.
External capture signals can be applied only 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.
User’s Manual
15
15
-
-
14
14
-
-
13
13
-
-
Function
Port direction register DP1H or DP1L bit y
DP1X.y = 0: Port line P1X.y is an input (high-impedance)
DP1X.y = 1: Port line P1X.y is an output
12
12
-
-
11
11
-
-
10
10
-
-
ESFR (F104
ESFR (F106
9
9
-
-
8
8
-
-
7-17
DP1
DP1
H.7
L.7
rw
rw
7
7
H
H
/82
/83
DP1
DP1
H.6
L.6
rw
rw
H
H
6
6
)
)
DP1
DP1
H.5
L.5
rw
rw
5
5
DP1
DP1
H.4
L.4
rw
rw
4
4
DP1
DP1
Reset Value: - - 00
Reset Value: - - 00
H.3
L.3
C164CM/C164SM
rw
rw
3
3
DP1
DP1
H.2
L.2
rw
rw
Parallel Ports
2
2
Derivatives
V1.0, 2002-02
DP1
DP1
H.1
L.1
rw
rw
1
1
DP1
DP1
H.0
L.0
rw
rw
0
0
H
H