ST10R272L - PARALLEL PORTS
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7.6
Port 5
Port 5 pins are 5 V tolerant and fail-safe (voltage max. with respect to Vss is -0.5 to 5.5, even
if the chip is non powered). For more information on this refer to the ST10R272L Data Sheet.
This 6-bit input port can only read data. There is no output latch and no direction register.
Data written to P5 will be lost.
P5 (FFA2h / D1h)
SFR
Reset Value: XX - -h
Figure 41 Block diagram of port 4 pin SSPDAT/ A22
Bit
Function
P5.y
Port data register P5 bit y (Read only)
VR02075D
Output
Buffer
Latch
Port Output
0
1
MUX
Write P4.y
Read P4.y
Enable
Function
Alternate
0
1
MUX
Read DP4.y
Write DP4.y
Direction
'1'
Input
Latch
Clock
Latch
s
u
B
l
a
n
r
e
t
n
I
P4.6
Signal
Control
SSP
Data
Output
SSP
SSP
Data In
MUX
1
0
Alternate
Data
Output
0
1
MUX
SSP
Enabled
5
4
3
2
1
0
11
10
9
8
7
6
15
14
13
12
-
-
-
-
-
-
r
r
-
-
-
-
r
r
r
r
P5.11
P5.12
P5.13
P5.14
P5.15
P5.10
