Section 28
Power-Down Modes
Rev. 0.50 May 18, 2006 Page 1385 of 1588
REJ09B0313-0050
28.2.13 Deep Standby Cancel Source Flag Register (DSFR)
DSFR is a 16-bit readable/writable register composed of two types of bits. One is the flag that
confirms which interrupt canceled deep standby mode. The other is the bit that releases the state of
pins after canceling deep standby mode. When deep standby mode is canceled by an interrupt
(NMI or IRQ) or a manual reset, this register retains the previous data although power-on reset
exception handling is executed. When deep standby mode is canceled by a power-on reset, this
register is initialized to H’0000. Only word access is valid.
All flags must be cleared immediately before transition to deep standby mode.
Note: When writing to this register, see section 28.4, Usage Notes.
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R/(W)
*
R
R
R
R
R
R/(W)
*
R/(W)
*
R/(W)
*
R/(W)
*
R/(W)
*
R/(W)
*
R/(W)
*
R/(W)
*
R/(W)
*
R/(W)
*
Note:
*
Only 0 can be written after reading 1 to clear the flag.
IO
KEEP
-
-
-
-
-
MRESF NMIF
IRQ7F IRQ6F IRQ5F IRQ4F IRQ3F IRQ2F IRQ1F IRQ0F
Bit:
Initial value:
R/W:
Bit Bit
Name
Initial
Value
R/W Description
15 IOKEEP
0 R/(W)
*
Release of Pin State Retention
Releases the retention of the pin state after canceling
deep standby mode
0: Pin state not retained
[Clearing condition]
Writing 0 after reading 1
1: Pin state retained
[Setting condition]
When deep standby mode is entered
14 to 10
All 0
R
Reserved
These bits are always read as 0. The write value
should always be 0.
9 MRESF
0 R/(W)
*
MRES
Flag
0: No interrupt on
MRES
pin
1: Interrupt on
MRES
pin
Содержание Single-Chip Microcomputer SH7203
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Страница 242: ...Section 8 Cache Rev 0 50 May 18 2006 Page 212 of 1588 REJ09B0313 0050 ...
Страница 400: ...Section 9 Bus State Controller BSC Rev 0 50 May 18 2006 Page 370 of 1588 REJ09B0313 0050 ...
Страница 668: ...Section 11 Multi Function Timer Pulse Unit 2 MTU2 Rev 0 50 May 18 2006 Page 638 of 1588 REJ09B0313 0050 ...
Страница 696: ...Section 13 Watchdog Timer WDT Rev 0 50 May 18 2006 Page 666 of 1588 REJ09B0313 0050 ...
Страница 726: ...Section 14 Realtime Clock RTC Rev 0 50 May 18 2006 Page 696 of 1588 REJ09B0313 0050 ...
Страница 796: ...Section 15 Serial Communication Interface with FIFO SCIF Rev 0 50 May 18 2006 Page 766 of 1588 REJ09B0313 0050 ...
Страница 876: ...Section 17 I2 C Bus Interface 3 IIC3 Rev 0 50 May 18 2006 Page 846 of 1588 REJ09B0313 0050 ...
Страница 1020: ...Section 19 Controller Area Network RCAN TL1 Rev 0 50 May 18 2006 Page 990 of 1588 REJ09B0313 0050 ...
Страница 1054: ...Section 21 D A Converter DAC Rev 0 50 May 18 2006 Page 1024 of 1588 REJ09B0313 0050 ...
Страница 1226: ...Section 23 USB 2 0 Host Function Module USB Rev 0 50 May 18 2006 Page 1196 of 1588 REJ09B0313 0050 ...
Страница 1294: ...Section 24 LCD Controller LCDC Rev 0 50 May 18 2006 Page 1264 of 1588 REJ09B0313 0050 ...
Страница 1386: ...Section 26 I O Ports Rev 0 50 May 18 2006 Page 1356 of 1588 REJ09B0313 0050 ...
Страница 1512: ...Section 30 List of Registers Rev 0 50 May 18 2006 Page 1482 of 1588 REJ09B0313 0050 ...
Страница 1598: ...Section 31 Electrical Characteristics Rev 0 50 May 18 2006 Page 1568 of 1588 REJ09B0313 0050 ...
Страница 1606: ...Appendix Rev 0 50 May 18 2006 Page 1576 of 1588 REJ09B0313 0050 ...
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