
ML62Q1000 Series User's Manual
Chapter 29 Safety Function
FEUL62Q1000
29-5
29.2.3 SFR Guard Setting Register 0 (SFRGD0)
SFRGD0 is a special function register (SFR) used to disable writing the SFR by the CPU and the DMA Controller.
Data in the specified SFR area is protectable.
Address:
0xF0B4 (SFRGD0L/SFRGD0), 0xF0B5(SFRGD0H)
Access:
R/W
Access size: 8/16bit
Initial value:
0x0000
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Word
SFRGD0
Byte
SFRGD0H
SFRGD0L
Bit
-
-
-
-
-
-
-
-
-
-
SGD05 SGD04 SGD03 SGD02 SGD01 SGD00
R/W
R
R
R
R
R
R
R
R
R
R
R/W
R/W
R/W
R/W
R/W
R/W
Initial
value
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit No.
Bit symbol
name
Description
15 to 6
-
Reserved bit
5
SGD05
This bit is used to disable WDTMOD register.
See Chapter 10 "Watch Dog Timer" for details of the register.
0: The SFR is writable and readable (Initial value)
1: The SFR is unwritable and readable
4
SGD04
This bit is used to disable BCKCONn register and BRECONn register (n=0 to 3).
See Chapter 4 "Power management" for details of the registers.
0: The SFR is writable and readable (Initial value)
1: The SFR is unwritable and readable
3
SGD03
This bit is used to disable RASFMOD register.
See Section 29.2.5 "RAM Parity Setting Register (RASFMOD) "for details of the register.
0: The SFR is writable and readable (Initial value)
1: The SFR is unwritable and readable
2
SGD02
This bit is used to disable SFRs described in Chapter 22 "Voltage Level Supervisor (VLS)".
0: The SFR is writable and readable (Initial value)
1: The SFR is unwritable and readable
1
SGD01
This bit is used to disable SFRs described in Chapter 6 "Clock Generation Circuit".
0: The SFR is writable and readable (Initial value)
1: The SFR is unwritable and readable
0
SGD00
This bit is used to disable SFRs described in Chapter 5 "Interrupt".
0: The SFR is writable and readable (Initial value)
1: The SFR is unwritable and readable
Содержание ML62Q1000 Series
Страница 17: ...Chapter 1 Overview...
Страница 112: ...Chapter 2 CPU and Memory Space...
Страница 154: ...Chapter 3 Reset Function...
Страница 166: ...Chapter 4 Power Management...
Страница 196: ...Chapter 5 Interrupts...
Страница 248: ...Chapter 6 Clock generation Circuit...
Страница 274: ...Chapter 7 Low Speed Time Base Counter...
Страница 291: ...Chapter 8 16 Bit Timer...
Страница 320: ...Chapter 9 Functional Timer FTM...
Страница 382: ...Chapter 10 Watchdog Timer...
Страница 402: ...Chapter 11 Serial Communication Unit...
Страница 456: ...Chapter 12 I2 C Bus Unit...
Страница 491: ...Chapter 13 I2 C Master...
Страница 512: ...Chapter 14 DMA Controller...
Страница 531: ...Chapter 15 Buzzer...
Страница 550: ...Chapter 16 Simplified RTC...
Страница 559: ...Chapter 17 GPIO...
Страница 594: ...Chapter 18 External Interrupt Function...
Страница 612: ...Chapter 19 CRC Generator...
Страница 632: ...Chapter 20 Analog Comparator...
Страница 644: ...Chapter 21 D A Converter...
Страница 655: ...Chapter 22 Voltage Level Supervisor...
Страница 676: ...Chapter 23 Successive Approximation Type A D Converter...
Страница 709: ...Chapter 24 Regulator...
Страница 714: ...Chapter 25 Flash Memory...
Страница 743: ...Chapter 26 Code Option...
Страница 750: ...Chapter 27 LCD Driver...
Страница 788: ...Chapter 28 On Chip Debug Function...
Страница 795: ...Chapter 29 Safety Function...
Страница 813: ...Appendix A...
Страница 881: ...Revision History...