ML620Q503/Q504 User's Manual
Chapter 27
Flash Memory Control
FEUL620Q504 27-
8
27.2.8 Remap Address Register (REMAPADD)
Address: 0F0ECH
Access: R/W
Access size: 8 bits
Initial value: 00H
7
6
5
4
3
2
1
0
REMAPADD
RBTA
RES2
RES1
RES0
REA15
REA14
REA13
REA12
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial value
0
0
0
0
0
0
0
0
REMAPADD is a special function register (SFR) used to specify the remap area.
In REMAPADD, the following two types of remapping can be specified.
1. Remap the addresses from 0000H to 0FFFH (4 KB) to an area of the same size (4 KB) starting from the
address specified by the RES2 to RES0 bits and REA15 to REA12 bits.
2. Remap the addresses from 0000H to 03FFH (1 KB) to the ISP boot area (addresses from FC00H to FDFFH)
by setting the RBTA bit.
When the software reset is executed by the BRK instruction (* only the CPU is reset), the CPU executes
instructions from the beginning address of the remap area specified in REMAPADD. Note that the remap
function remaps all of the vector table areas (reset vector area, hardware interrupt vector area, and software
interrupt vector area).
* For the BRK instruction, refer to "nX-U16/100 Core Instruction Manual".
Description of Bits
•
REA15-12
(bits 3 to 0)
The REA15 to REA12 bits are used to set the higher 4 bits (bits 15 to 12) of the start address of the area
to remap.
Example) When "0BH" is set in REA15 to 12 and the BRK instruction is executed, the area from B000H
to BFFFH is mapped to 0000H to 0FFFH.
•
RES2-0
(bits 6 to 4)
The RES2 to RES0 bits are used to set the segment of the area to remap.
Since only segments 0 and 1 are used in this LSI, set these bits to 0 or 1.
•
RBTA
(bit 7)
By setting RBTA to "1", bit[11:10] of head address which remapping is set to “11”b. The head address
of remapping can be set to “FC00”H by setting REA15-12 as "F"h. And boot area can be remapping in
ISP boot area (addresses from FC00H to FDFFH). It is also possible to use the external pin (TEST0) to
boot from the ISP boot area (called "hardware remap"). For details of hardware remap, refer to "27.3. 5
Boot Area Remap Function by Hardware".
[Note]
To boot from the ISP boot area, it is necessary to write the boot program in advance in the addresses from
FC00H to FDDFH of the ISP boot area (addresses FC00H to FDFFH) by using ICE, etc. Also, be sure to
write "0FFH" in addresses from FDE0H to FDFFH.
Содержание LAPIS SEMICONDUCTOR ML620Q503
Страница 2: ...ML620Q503 Q504 User s Manual Issue Date Apr 16 2015 FEUL620Q504 01...
Страница 18: ...Chapter 1 Overview...
Страница 32: ...Chapter 2 CPU and Memory Space...
Страница 44: ...Chapter 3 Reset Function...
Страница 50: ...Chapter 4 Power Management...
Страница 70: ...Chapter 5 Interrupts...
Страница 134: ...Chapter 6 Clock Generation Circuit...
Страница 161: ...Chapter 7 Time Base Counter...
Страница 170: ...Chapter 8 Timers...
Страница 183: ...Chapter 9 Function Timer FTM...
Страница 231: ...Chapter 10 Watchdog Timer...
Страница 239: ...Chapter 11 Synchronous Serial Port SSIO...
Страница 251: ...Chapter 12 Synchronous Serial Port with FIFO SSIOF...
Страница 283: ...Chapter 13 UART...
Страница 303: ...Chapter 14 UART with FIFO UARTF...
Страница 327: ...Chapter 15 I2 C Bus Interface...
Страница 344: ...Chapter 16 Port XT...
Страница 350: ...Chapter 17 Port 0...
Страница 361: ...Chapter 18 Port 1...
Страница 368: ...Chapter 19 Port2...
Страница 379: ...Chapter 20 Port 3...
Страница 395: ...Chapter 21 Port 4...
Страница 410: ...Chapter 22 Port 5...
Страница 426: ...Chapter 23 Melody Driver...
Страница 439: ...Chapter 24 RC Oscillation type A D Converter RC ADC...
Страница 462: ...Chapter 25 Successive Approximation Type A D Converter SA ADC...
Страница 479: ...Chapter 26 Analog Comparator...
Страница 489: ...Chapter 27 Flash Memory Control...
Страница 505: ...Chapter 28 Voltage Level Supervisor VLS...
Страница 517: ...Chapter 29 LLD circuit...
Страница 519: ...Chapter 30 On Chip Debug Function...
Страница 522: ...Appendixes...
Страница 552: ...Revision History...