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Section 3 Exception Handling
Rev. 6.00 Sep 12, 2006 page 70 of 526
REJ09B0326-0600
Bit 5
Reserved bit:
Bit 5 is reserved: it is always read as 0 and cannot be modified.
Bit 4
SCI1 Interrupt Request Flag (IRRS1)
Bit 4: IRRS1
Description
0
Clearing condition:
(initial value)
When IRRS1 = 1, it is cleared by writing 0
1 Setting
condition:
When an SCI1 transfer is completed
Bits 3 to 0
Reserved Bits:
Bits 3 to 0 are reserved: they are always read as 0 and cannot be
modified.
Interrupt Request Register 3 (IRR3)
Bit
7 6 5 4 3 2 1 0
INTF7 INTF6 INTF5 INTF4 INTF3 INTF2 INTF1 INTF0
Initial
value 0 0 0 0 0 0 0 0
Read/Write R/W
*
R/W
*
R/W
*
R/W
*
R/W
*
R/W
*
R/W
*
R/W
*
Note:
*
Only a write of 0 for flag clearing is possible.
IRR3 is an 8-bit read/write register, in which a corresponding flag is set to 1 by a transition at pin
INT
7
to
INT
0
. The flags are not cleared automatically when an interrupt is accepted. It is necessary
to write 0 to clear each flag. Upon reset, IRR3 is initialized to H'00.
Bits 7 to 0
INT
7
to INT
0
Interrupt Request Flags (INTF7 to INTF0)
Bit n: INTFn
Description
0
Clearing condition:
(initial value)
When INTFn = 1, it is cleared by writing 0
1 Setting
condition:
When the designated signal edge is input at pin
INT
n
(n = 7 to 0)
Summary of Contents for F-ZTAT H8/3642A Series
Page 6: ...Rev 6 00 Sep 12 2006 page iv of xx ...
Page 8: ...Rev 6 00 Sep 12 2006 page vi of xx ...
Page 22: ...Rev 6 00 Sep 12 2006 page xx of xx ...
Page 124: ...Section 5 Power Down Modes Rev 6 00 Sep 12 2006 page 102 of 526 REJ09B0326 0600 ...
Page 188: ...Section 6 ROM Rev 6 00 Sep 12 2006 page 166 of 526 REJ09B0326 0600 ...
Page 190: ...Section 7 RAM Rev 6 00 Sep 12 2006 page 168 of 526 REJ09B0326 0600 ...
Page 298: ...Section 9 Timers Rev 6 00 Sep 12 2006 page 276 of 526 REJ09B0326 0600 ...
Page 378: ...Section 12 A D Converter Rev 6 00 Sep 12 2006 page 356 of 526 REJ09B0326 0600 ...
Page 446: ...Section 13 Electrical Characteristics Rev 6 00 Sep 12 2006 page 424 of 526 REJ09B0326 0600 ...