參數(shù)資料
型號(hào)： GMS34140T
廠商： Hynix Semiconductor Inc.
英文描述： 4-BIT SINGLE CHIP MICROCOMPUTERS
中文描述： 4位單片機(jī)微機(jī)
文件頁(yè)數(shù)： 21/49頁(yè)
文件大?。?/td> 328K
代理商： GMS34140T
2 - 3
Data memory (RAM)
Up to 32 nibbles (16 words
2pages
4bits) is incorporated for storing data.
The whole data memory area is indirectly specified by a data pointer (X,Y). Page
number is specified by zero bit of X register, and words in the page by 4 bits in
Y-register. Data memory is composed in 16 nibbles/page. Figure 2-2 shows the
configuration.
0
1
2
3
15
Output port
Y-register (Y)
X-register (X)
D0
D9 R0
R3 REMOUT
Page 0
Page 1
0
1
4
A0~A3
Data memory page (0~1)
X-register (X)
X-register is consist of 2bit, X0 is a data pointer of page in the RAM, X1 is only
used for selecting of D8~D9 with value of Y-register
Fig 2-2 Composition of Data Memory
X1=1
X1=0
D8
D9
Y=0
Y=1
D1
D0
Table 2-1 Mapping table between X and Y register
Chapter 2. Architecture
4
2
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