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參數(shù)資料
| 型號(hào)： | M30624MGA-XXXFP |
| 廠(chǎng)商： | Mitsubishi Electric Corporation |
| 英文描述： | SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| 中文描述： | 單片16位CMOS微機(jī) |
| 文件頁(yè)數(shù)： | 224/274頁(yè) |
| 文件大?。?/td> | 3495K |
| 代理商： | M30624MGA-XXXFP |
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CPU Rewrite Mode (Flash Memory Version)
Mitsubishi microcomputers
M16C / 62A Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
224
End
Start
Execute read array command or reset flash
memory by setting flash memory reset bit (by
writing
“
1
”
and then
“
0
”
in succession) (Note 3)
Single-chip mode, memory expansion
mode, or boot mode
Set processor mode register (Note 1)
Using software command execute erase,
program, or other operation
(Set lock bit disable bit as required)
Jump to transferred control program in RAM
(Subsequent operations are executed by control
program in this RAM)
Transfer CPU rewrite mode control
program to internal RAM
Note 1: During CPU rewrite mode, set the main clock frequency as shown below using the main clock divide ratio
select bit (bit 6 at address 0006
16
and bits 6 and 7 at address 0007
16
):
6.25 MHz or less when wait bit (bit 7 at address 0005
16
) =
“
0
”
(without internal access wait state)
12.5 MHz or less when wait bit (bit 7 at address 0005
) =
“
1
”
(with internal access wait state)
Note 2: For CPU rewrite mode select bit to be set to
“
1
”
, the user needs to write a
“
0
”
and then a
“
1
”
to it in
succession. When it is not this procedure, it is not enacted in
“
1
”
. This is necessary to ensure that no
interrupt or DMA transfer will be executed during the interval.
Note 3: Before exiting the CPU rewrite mode after completing erase or program operation, always be sure to
execute a read array command or reset the flash memory.
Note 4:
“
1
”
can be set. However, when this bit is
“
1
”
, user ROM area is accessed.
(Boot mode only)
Write
“
0
”
to user ROM area select bit (Note 4)
Write
“
0
”
to CPU rewrite mode select bit
(Boot mode only)
Set user ROM area select bit to
“
1
”
Set CPU rewrite mode select bit to
“
1
”
(by
writing
“
0
”
and then
“
1
”
in succession)(Note 2)
*1
*1
Program in ROM
Program in RAM
Figure 1.26.2. CPU rewrite mode set/reset flowchart
Figure 1.26.3. Shifting to the low speed mode flowchart
End
Start
X
IN
oscillating
Transfer the program to be executed in the
low speed mode, to the internal RAM.
Switch the count source of BCLK.
X
IN
stop. (Note 2)
Jump to transferred control program in RAM
(Subsequent operations are executed by control
program in this RAM)
Note 1: For flash memory power supply-OFF bit to be set to
“
1
”
, the user needs to write a
“
0
”
and then a
“
1
”
to it in
succession. When it is not this procedure, it is not enacted in
“
1
”
. This is necessary to ensure that no
interrupt or DMA transfer will be executed during the interval.
Note 2: Before the count source for BCLK can be changed from X
IN
to X
CIN
or vice versa, the clock to which
the count source is going to be switched must be oscillating stably.
Wait time until the internal circuit stabilizes
(Set NOP instruction about twice)
Set flash memory power supply-OFF bit to
“
0
”
Set flash memory power supply-OFF bit to
“
1
”
(by writing
“
0
”
and then
“
1
”
in succession)(Note 1)
*1
*1
Program in ROM
Program in RAM
Process of low speed mode
Wait until the X
IN
has stabilized
Switch the count source of BCLK (Note 2)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M30624MGA-XXXGP | SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30624MG-247FP | SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30624MG-327FP | SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30624MGA-322FP | QUID+OSINE FUNCTION |
| M30624MGA-333FP | SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M30624MGA-XXXGP | 制造商:MITSUBISHI 制造商全稱(chēng):Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30624MGM-437FP | 制造商:MITSUBISHI 制造商全稱(chēng):Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30624MGM-443FP | 制造商:MITSUBISHI 制造商全稱(chēng):Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30624MGN-XXXFP | 制造商:MITSUBISHI 制造商全稱(chēng):Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30624MGN-XXXGP | 制造商:MITSUBISHI 制造商全稱(chēng):Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
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