參數(shù)資料
型號: M38049FFLSP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, FLASH, 16.8 MHz, MICROCONTROLLER, PDIP64
封裝: 17 X 56.40 MM, 1.78 MM HEIGHT, PLASTIC, SDIP-64
文件頁數(shù): 36/129頁
文件大?。?/td> 1721K
代理商: M38049FFLSP
Rev.1.00
Oct 27, 2008
Page 14 of 128
REJ03B0266-0100
3804 Group (Spec.L)
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
The RAM is used for data storage and for stack area of
subroutine calls and interrupts.
ROM
The ROM area can program/erase.
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.
<Note>
Since the contents of RAM are undefined at reset, be sure to set
an initial value before use.
Fig. 11 Memory map diagram
RAM area
RAM size
(bytes)
Address
XXXX16
192
256
384
512
640
768
896
1024
1536
2048
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
RAM
ROM
01 00 16
00 00 16
00 40 16
0FF0 16
FF00 16
FFDC16
FFFE16
FFFF16
XXXX16
YYYY16
SFR area
Interrupt vector area
Zero page
Special page
Reserved ROM area
Not used
0FFF16
SFR area
Not used
Reserved ROM area
(ROM code Protect)
Reserved ROM area
(ID code)
FFDB16
FFD416
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