參數(shù)資料
型號(hào): M38D29GFFP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, FLASH, 6.25 MHz, MICROCONTROLLER, PQFP64
封裝: 14 X 14 MM, 0.80 MM PITCH, PLASTIC, LQFP-64
文件頁數(shù): 49/138頁
文件大小: 2880K
代理商: M38D29GFFP
Rev.3.02
Apr 10, 2008
Page 16 of 131
REJ03B0177-0302
38D2 Group
MEMORY
Special Function Register (SFR) Area
The Special Function Register area in the zero page contains
control registers such as I/O ports and timers.
RAM
RAM is used for data storage and for stack area of subroutine
calls and interrupts.
ROM
In the QzROM version, the first 128 Kbytes and the last 2 bytes
are reserved for device testing and the rest is the user area. Also,
1 byte of address FFDB16 is reserved.
In the flash memory version, programming and erase operations
can be performed to reserved ROM areas.
Interrupt Vector Area
The interrupt vector area contains reset and interrupt vectors.
Zero Page
Access to this area with only 2 bytes is possible in the zero page
addressing mode.
Special Page
Access to this area with only 2 bytes is possible in the special
page addressing mode.
ROM Code Protect Address in QzROM Version (Address
FFDB16)
Address FFDB16 as reserved ROM area in the QzROM version
is ROM code protect address. “0016” or “FE16” is written into
this address when selecting the protect bit write by using a serial
programmer and selecting protect enabled for writing shipment
by Renesas Technology Corp. When “0016” or “FE16” is set to
the ROM code protect address, the protect function is enabled, so
that reading or writing from/to the corresponding area is disabled
by a serial programmer.
As for the QzROM product in blank, the ROM code is protected
by selecting the protect bit write at ROM writing with a serial
programmer.
The protect can be performed, dividing twice. The protect area 1
is from the beginning address of ROM to address “EFFF16”.
As for the QzROM product shipped after writing, “0016” (protect
enabled to all area), “FE16” (protect enabled to the protect area 1)
or “FF16” (protect disabled) is written into the ROM code protect
address when Renesas Technology Corp. performs writing. The
writing of “0016”, “FE16” or “FF16” can be selected as ROM
option setup (“MASK option” written in the mask file converter)
when ordering.
For the ROM code protect in the flash memory version, refer to
the “FLASH MEMORY MODE”.
<Notes>
After a reset, the contents of RAM are undefined. Make sure to
set the initial value before use.
When Renesas ships QzROM write products, we write ROM
option data* specified by the mask file converter MM to the
ROM code protect address. Therefore, set FF16 to the ROM
code protect address in ROM data regardless of the presence
or absence of a protect. When data other than FF16 is set, we
may ask that the ROM data be submitted again.
* ROM option data: mask option noted in MM
Fig. 9 Memory map diagram
Reserved area
SFR area
0FF016
100016
SFR area
Interrupt vector area
ROM area
Reserved ROM area
(128 bytes)
010016
000016
004016
084016
FF0016
FFDC16
FFFE16
FFFF16
Zero page
Special page
RAM area
RAM size
(bytes)
Address
XXXX16
192
256
384
512
640
768
896
1024
1536
2048
XXXX16
00FF16
013F16
01BF16
023F16
02BF16
033F16
03BF16
043F16
063F16
083F16
ROM size
(bytes)
Address
YYYY16
Address
ZZZZ16
4096
8192
12288
16384
20480
24576
28672
32768
36864
40960
45056
49152
53248
57344
61440
F00016
E00016
D00016
C00016
B00016
A00016
900016
800016
700016
600016
500016
400016
300016
200016
100016
F08016
E08016
D08016
C08016
B08016
A08016
908016
808016
708016
608016
508016
408016
308016
208016
108016
YYYY16
ZZZZ16
Reserved ROM area
RAM
ROM
Protect area 1
EFFF16
FFDB16
Reserved ROM area
(ROM code protect)
Not used
0FD016
Reserved area
(2)
Note 1: This area is available in the flash memory version only.
2: ROM correction vectors are assigned. As for the details, refer to the “ROM CORRECTION FUNCTION”.
3: In the flash memory version, programming and erase operations can be performed to reserved ROM areas.
Note that their areas are different from those in the QzROM version.
(2)
Reserved ROM area
(ID code)
FFD416
(1)
SFR area
0FEF16
0FE016
(1)
LCD display RAM area
004C16
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