參數(shù)資料
型號: HD404848
廠商: Hitachi,Ltd.
英文描述: 4-Bit Single-Chip Microcomputer
中文描述: 4位單片機(jī)
文件頁數(shù): 111/125頁
文件大?。?/td> 471K
代理商: HD404848
HD404849 Series
111
Direct Addressing Mode:
A program can branch to any address in the ROM memory space by executing
the JMPL, BRL, or CALL instruction. Each of these instructions replaces the 14 program counter bits
(PC
13
–PC
0
) with 14-bit immediate data.
Current Page Addressing Mode:
The MCU has 64 pages of ROM with 256 words per page. A program
can branch to any address in the current page by executing the BR instruction. This instruction replaces the
eight low-order bits of the program counter (PC
7
–PC
0
) with eight-bit immediate data. If the BR instruction
is on a page boundary (address 256n + 255), executing that instruction transfers the PC contents to the next
physical page, as shown in figure 94. This means that the execution of the BR instruction on a page
boundary will make the program branch to the next page.
B
1
B
0
A
3
A
2
A
1
A
0
Accumulator
Referenced ROM address
Address Designation
RA
9
RA
8
RA
7
RA
6
RA
5
RA
4
RA
3
RA
2
RA
1
RA
0
RA
RA
RA
10
11
12
13
B
2
B
3
B register
0
0
p
3
p
0
[P]
Instruction
Opcode
p
2
p
1
RA
RO
9
RO
0
RO
8
RO
7
RO
6
RO
5
RO
4
RO
3
RO
2
RO
1
B
B
B
B
A
A
A
A
3
2
1
0
3
2
1
0
If RO = 1
Accumulator, B register
ROM data
Pattern Output
RO
9
ROM data
R2
3
2
1
0
3
2
1
0
If RO = 1
Output registers R1, R2
R2
R2
R2
R1
R1
R1
R1
RO
0
RO
8
RO
7
RO
6
RO
5
RO
4
RO
3
RO
2
RO
1
Figure 93 P Instruction
相關(guān)PDF資料
PDF描述
HD404848FS 4-Bit Single-Chip Microcomputer
HD404848H RELAY SOCKET
HD404848TF PLASTIC-GRIP
HD404849 TERMINAL
HD404849FS TERMINAL
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD404848FS 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-Bit Single-Chip Microcomputer
HD404848H 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-Bit Single-Chip Microcomputer
HD404848TF 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-Bit Single-Chip Microcomputer
HD404849 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-Bit Single-Chip Microcomputer
HD404849FS 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-Bit Single-Chip Microcomputer