beautypg.com

FUJITSU MB91460 SERIES FR60 User Manual

Page 501

background image

485

Chapter 30 I/O Ports

3.Port Register Settings

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