FUJITSU MB91460 SERIES FR60 User Manual
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Chapter 30 I/O Ports
3.Port Register Settings
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P24: The functions of Port 24 are controlled by PFR24
P24[7:0] is input/output for I2C serial communication signals SCL, SDA of channels 2 and 3, and External
Interrupt Triggers INT[7:0]. Otherwise, the port can be used as general purpose port.
PFR24.7
0 - Port is in general purpose port mode.
1 - Port is in resource function mode:
Resource function is SCL3 open drain, and INT7 input
Remark: This pin supports external interrupt wake up from STOP-HIZ mode. Because of this
the internal input line is not forced to low in STOP-HIZ mode if the PFR is set to ‘1’ and
interrupt is enabled with ENIR0.EN7 set to ‘1’.
PFR24.6
0 - Port is in general purpose port mode.
1 - Port is in resource function mode:
Resource function is SDA3 open drain, and INT6 input
Remark: This pin supports external interrupt wake up from STOP-HIZ mode. Because of this
the internal input line is not forced to low in STOP-HIZ mode if the PFR is set to ‘1’ and
interrupt is enabled with ENIR0.EN6 set to ‘1’.
PFR24.5
0 - Port is in general purpose port mode.
1 - Port is in resource function mode:
Resource function is SCL2 open drain, and INT5 input
Remark: This pin supports external interrupt wake up from STOP-HIZ mode. Because of this
the internal input line is not forced to low in STOP-HIZ mode if the PFR is set to ‘1’ and
interrupt is enabled with ENIR0.EN5 set to ‘1’.
PFR24.4
0 - Port is in general purpose port mode.
1 - Port is in resource function mode:
Resource function is SDA2 open drain, and INT4 input
Remark: This pin supports external interrupt wake up from STOP-HIZ mode. Because of this
the internal input line is not forced to low in STOP-HIZ mode if the PFR is set to ‘1’ and
interrupt is enabled with ENIR0.EN4 set to ‘1’.
PFR24.3
0 - Port is in general purpose port mode.
1 - Port is in resource function mode:
Resource function is INT3 input
Remark: This pin supports external interrupt wake up from STOP-HIZ mode. Because of this
the internal input line is not forced to low in STOP-HIZ mode if the PFR is set to ‘1’ and
interrupt is enabled with ENIR0.EN3 set to ‘1’.
PFR24.2
0 - Port is in general purpose port mode.
1 - Port is in resource function mode:
Resource function is INT2 input
Addr
7
6
5
4
3
2
1
0
initial
PFR24
0D98h
PFR24.7
PFR24.6
PFR24.5
PFR24.4
PFR24.3
PFR24.2
PFR24.1
PFR24.0
0000 0000
EPFR24
0DD8h
-
-
-
-
-
-
-
-
---- ----
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W