
ML62Q1000 Series User's Manual
Chapter 29 Safety Function
FEUL62Q1000
29-4
29.2.2 RAM Guard Setting Register (RAMGD)
RAMGD is a special function register (SFR) used to disable writing the RAM by the CPU and the DMA Controller.
Data in the specified RAM area is protectable.
Address:
0xF0B0 (RAMGD)
Access:
R/W
Access size: 8bit
Initial value:
0x00
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Word
-
Byte
-
RAMGD
Bit
-
-
-
-
-
-
-
-
-
-
-
-
-
RGD2 RGD1 RGD0
R/W
R
R
R
R
R
R
R
R
R
R
R
R
R
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
7 to 3
-
Reserved bit
2 to 0
RGD2 to
RGD0
These bits are used to choose a protect area for writing on the RAM.
000:
All RAM area writable and readable (Initial value)
001:
0x0:0EFC0H to 0x0:0EFFFH (64 byte) is unwritable and readable
010:
0x0:0EF80H to 0x0:0EFFFH (128 byte) is unwritable and readable
011:
0x0:0EF00H to 0x0:0EFFFH (256 byte) is unwritable and readable
100:
0x0:0EE00H to 0x0:0EFFFH (512 byte) is unwritable and readable
101:
Do not use (0x0:0EE00H to 0x0:0EFFFH(512 byte) is unwritable and readable)
110:
Do not use (0x0:0EE00H to 0x0:0EFFFH(512 byte) is unwritable and readable)
111:
Do not use (0x0:0EE00H to 0x0:0EFFFH(512 byte) is unwritable and readable)
Summary of Contents for ML62Q1000 Series
Page 17: ...Chapter 1 Overview...
Page 112: ...Chapter 2 CPU and Memory Space...
Page 154: ...Chapter 3 Reset Function...
Page 166: ...Chapter 4 Power Management...
Page 196: ...Chapter 5 Interrupts...
Page 248: ...Chapter 6 Clock generation Circuit...
Page 274: ...Chapter 7 Low Speed Time Base Counter...
Page 291: ...Chapter 8 16 Bit Timer...
Page 320: ...Chapter 9 Functional Timer FTM...
Page 382: ...Chapter 10 Watchdog Timer...
Page 402: ...Chapter 11 Serial Communication Unit...
Page 456: ...Chapter 12 I2 C Bus Unit...
Page 491: ...Chapter 13 I2 C Master...
Page 512: ...Chapter 14 DMA Controller...
Page 531: ...Chapter 15 Buzzer...
Page 550: ...Chapter 16 Simplified RTC...
Page 559: ...Chapter 17 GPIO...
Page 594: ...Chapter 18 External Interrupt Function...
Page 612: ...Chapter 19 CRC Generator...
Page 632: ...Chapter 20 Analog Comparator...
Page 644: ...Chapter 21 D A Converter...
Page 655: ...Chapter 22 Voltage Level Supervisor...
Page 676: ...Chapter 23 Successive Approximation Type A D Converter...
Page 709: ...Chapter 24 Regulator...
Page 714: ...Chapter 25 Flash Memory...
Page 743: ...Chapter 26 Code Option...
Page 750: ...Chapter 27 LCD Driver...
Page 788: ...Chapter 28 On Chip Debug Function...
Page 795: ...Chapter 29 Safety Function...
Page 813: ...Appendix A...
Page 881: ...Revision History...