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參數(shù)資料
| 型號： | M38504M6A-XXXFP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 6.25 MHz, MICROCONTROLLER, PDSO42 |
| 封裝： | 8.40 X 17.50 MM, 0.80 MM PITCH, PLASTIC, SSOP-42 |
| 文件頁數(shù)： | 3/59頁 |
| 文件大?。?/td> | 885K |
| 代理商： | M38504M6A-XXXFP |
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Rev.2.13
Apr 17, 2009
Page 11 of 56
REJ03B0125-0213
3850 Group (Spec.A QzROM version)
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
The first 128 bytes and the last 2 bytes of ROM are reserved for
device testing and the rest is user area for storing programs.
In the QzROM version, 1 byte of address FFDB16 is also a
reserved area.
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 (address FFDB16)
Address FFDB16, which is the reserved ROM area of QzROM, is
the ROM code protect address. “0016” is written into this address
when selecting the protect bit write by using a serial programmer
or selecting protect enabled for writing shipment by Renesas
Technology corp.. When “0016” is set to the ROM code protect
address, the protect function is enabled, so that reading or writing
from/to QzROM 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.
As for the QzROM product shipped after writing, “0016” (protect
enabled) or “FF16” (protect disabled) is written into the ROM
code protect address when Renesas Technology corp. performs
writing.
The writing of “0016” or “FF16” can be selected as ROM option
setup (“MASK option” written in the mask file converter) when
ordering.
<Notes>
Since the contents of RAM are undefined at reset, be sure to set
an initial value before use.
Fig 8.
Memory map diagram
Zero page
Special page
RAM area
RAM size
(bytes)
Address
XXXX16
192
256
384
512
640
768
896
1024
1536
2048
User ROM area
RAM
ROM
010016
000016
004016
FF0016
XXXX16
FFFE16
FFFF16
YYYY16
ZZZZ16
00FF16
013F16
01BF16
023F16
02BF16
033F16
03BF16
043F16
063F16
083F16
ROM area
ROM size
(bytes)
Address
YYYY16
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
Address
ZZZZ16
F08016
E08016
D08016
C08016
B08016
A08016
908016
808016
708016
608016
508016
408016
308016
208016
108016
FFDC16
FFDB16
SFR area
Interrupt vector area
Reserved ROM area
(128 bytes)
Reserved ROM area
(ROM code protect address)
Not used
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| M38507ARLSS | 功能描述:M-SUPPORT TOOL RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 配件 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program RoHS指令信息:IButton RoHS Compliance Plan 標(biāo)準(zhǔn)包裝:1 系列:- 附件類型:USB 至 1-Wire? RJ11 適配器 適用于相關(guān)產(chǎn)品:1-Wire? 設(shè)備 產(chǎn)品目錄頁面:1429 (CN2011-ZH PDF) |
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