ML620Q503/Q504 User's Manual
Chapter 27
Flash Memory Control
FEUL620Q504 27-
6
27.2.5 Flash Acceptor (FLASHACP)
Address: 0F0E6H
Access: W
Access size: 8 bits
Initial value: 00H
7
6
5
4
3
2
1
0
FLASHACP
fac7
fac6
fac5
fac4
fac3
fac2
fac1
fac0
R/W
W
W
W
W
W
W
W
W
Initial value
0
0
0
0
0
0
0
0
FLASHACP is a write-only special function register (SFR) to control the block erase for the flash memory
rewrite or sector erase or enable/disable the 1-word write operation.
Description of Bits
•
fac7-0
(bits 7 to 0)
The fac7 to fac0 bits are used to restrict the block erase or sector erase or 1-word write operation in
order to prevent an unintended erase or an unintended write.
Writing "0FAH" and "0F5H" to FLASHACP in this order enables a one-time block erase or sector erase
or 1-word write.
For subsequent block erase or sector erase or 1-word write, it is necessary to write "0FAH" and "0F5H"
to FLASHACP each time.
Even if another instruction is inserted between "0FAH" and "0F5H" written to FLASHACP, the block
erase or sector erase or 1-word write is enabled. Note that, if data other than "0F5H" is written to
FLASHACP after "0FAH" is written, the "0FAH" write processing becomes invalid. So, it is necessary
to rewrite "0FAH" at first.
27.2.6 Flash Segment Register (FLASHSEG)
Address: 0F0E8H
Access: R/W
Access size: 8 bits
Initial value: 00H
7
6
5
4
3
2
1
0
FLASHSEG
–
–
–
–
–
FSEG2
FSEG1
FSEG0
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
FLASHSEG is a special function register (SFR) used to set the flash memory rewrite segment address.
Description of Bits
•
FSEG2-0
(bits 2 to 0)
The FSEG2 to FSEG0 bits are used to set the segment address of FLASH memory.
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...