参数资料
型号: M34283G2-XXXGP
元件分类: 微控制器/微处理器
英文描述: 4-BIT, MROM, 4 MHz, MICROCONTROLLER, PDSO20
封装: 4.40 X 6.50 MM, 0.65 MM PITCH, PLASTIC, LSSOP-20
文件页数: 4/41页
文件大小: 441K
代理商: M34283G2-XXXGP
Rev.1.01
Mar 20, 2006
page 10 of 62
REJ03B0109-0101
4283 Group
Fig. 10 ROM map of M34283G2
PROGRAM MEMORY (ROM)
The program memory is a mask ROM. 1 word of ROM is
composed of 9 bits. ROM is separated every 128 words by the
unit of page (addresses 0 to 127).
Table 1 ROM size and pages
Fig. 11 RAM map
Page 2 (addresses 010016 to 017F16) is the special page for
subroutine calls. Subroutines written in this page can be called
from any page with the 1-word instruction (BM). Subroutines
extending from page 2 to another page can also be called with
the BM instruction when it starts on page 2.
ROM pattern of all addresses can be used as data areas with
the TABP p instruction.
DATA MEMORY (RAM)
1 word of RAM is composed of 4 bits, but 1-bit manipulation
(with the SB j, RB j, and SZB j instructions) is enabled for the
entire memory area. A RAM address is specified by a data
pointer. The data pointer consists of registers X and Y. Set a
value to the data pointer certainly when executing an instruction
to access RAM.
Table 2 shows the RAM size. Figure 11 shows the RAM map.
Part number
M34283G2
ROM size ( 9 bits)
2048 words
Pages
16 (0 to 15)
Part number
M34283G2
RAM size
64 words 4 bits (256 bits)
Table 2 RAM size
0
87
6
54
3
21
000016
008016
017F16
Subroutine special page
007F16
00FF16
010016
07FF16
018016
Page 1
Page 2
Page 0
Page 3
Page 15
Register
Y
Register X
0
1
2
3
4
5
6
7
0 1
RAM 64 words 4 bits (256 bits)
23
64 words
8
9
10
11
12
13
14
15
M34283G2
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