參數(shù)資料
型號： ST2202
廠商： Electronic Theatre Controls, Inc.
英文描述： 8 BIT Integrated Microcontroller with 256K Bytes ROM
中文描述： 8位微控制器集成256K字節(jié)ROM的
文件頁數(shù)： 8/65頁
文件大?。?/td> 1946K
代理商： ST2202
Sitronix
ST2202
Ver 2.0a
8/65
2003-May-05
7
7
.
.
M
M
E
E
M
M
O
O
R
R
Y
Y
C
C
O
O
N
N
F
F
I
I
G
G
U
U
R
R
A
A
T
T
I
I
O
O
N
N
7.1 Memory map
The logical memory space of ST2202 is divided into 3 parts:
$0000~$0FFF (4K), $4000~$7FFF (16K), and $8000~FFFF
(32K). First is for control registers, stack and system memory.
Second and third are banked areas. Logical address in these
two areas combines two bank registers,
PRR
and
DRR
respectively, and then be mapped to a physical address.
PRR
is the Program ROM Bank Register and is 12-bit long, while
DRR
is the Data ROM Bank Register of the length of 11 bits.
Both can refer to a maximum space of 64M bytes.
Only 44M (28M when
CSM0
=”0”) bytes is
addressable by chip selects.
Refer to FIGURE 7-1 for memory mapping of ST2202.
.
Control Register
Zero Page
User Memory
0000
007F
0080
00FF
0100
User Memory /
Display Memory
0200
01FF
3FFF
4000
Program Memory
(PRR)
16K bytes
7FFF
8000
Data Memory
(DRR)
32K bytes
FFFF
0000000~
0003FFF
0004000~
0007FFF
DRR = 000H
PRR = 001H
PRR = 000H
0008000~
000BFFF
000C000~
000FFFF
DRR = 001H
PRR = 003H
PRR = 002H
3FF0000~
3FF3FFF
3FF4000~
3FF7FFF
DRR = 7FEH
PRR = FFDH
PRR = FFCH
3FF8000~
3FFBFFF
3FFC000~
3FFFFFF
DRR = 7FFH
PRR = FFFH
PRR = FFEH
Interrupt Vector
7FE2
CPU Memory Mapping
Physical Memory Mapping
64M Bytes
Stack
Reserved
0FFF
1000
FIGURE 7-1 Memory Mapping
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