- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄370462 > HD404324 (Hitachi,Ltd.) 4-bit HMCS400-series microcomputer(4位單片微計算機) PDF資料下載
參數(shù)資料
| 型號： | HD404324 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 4-bit HMCS400-series microcomputer(4位單片微計算機) |
| 中文描述： | 4位HMCS400系列微電腦（4位單片微計算機） |
| 文件頁數(shù)： | 73/94頁 |
| 文件大?。?/td> | 573K |
| 代理商： | HD404324 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁當(dāng)前第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁
HD404328 Series
73
ROM Addressing Modes and the P Instruction
The MCU has four ROM addressing modes, as shown in figure 45 and described below.
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 47. This means that the execution of the BR instruction on a page
boundary will make the program branch to the next page.
Note that the HMCS400-Series cross macroassembler has an automatic paging feature for ROM pages.
Zero-Page Addressing Mode:
A program can branch to the zero-page subroutine area located at $000–
$003F by executing the CAL instruction. When the CAL instruction is executed, 6 bits of immediate data
are placed in the six low-order bits of the program counter (PC
5
–PC
0
), and 0s are placed in the eight high-
order bits (PC
13
–PC
6
).
Table Data Addressing Mode:
A program can branch to an address determined by the contents of four-
bit immediate data, the accumulator, and the B register by executing the TBR instruction.
P Instruction:
ROM data addressed in table data addressing mode can be referenced with the P instruction
as shown in figure 46. If bit 8 of the ROM data is 1, eight bits of ROM data are written to the accumulator
and the B register. If bit 9 is 1, eight bits of ROM data are written to the R0 and R1 port output registers.
If both bits 8 and 9 are 1, ROM data is written to the accumulator and the B register, and also to the R0 and
R1 port output registers at the same time.
The P instruction has no effect on the program counter.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HD404326 | 4-bit HMCS400-series microcomputer(4位單片微計算機) |
| HD4074449 | 4-bit HMCS400-Series microcomputer(4位單片微計算機) |
| HD404448 | 4-bit HMCS400-Series microcomputer(4位單片微計算機) |
| HD404449 | 4-bit HMCS400-Series microcomputer(4位單片微計算機) |
| HD4074459 | 4-bit HMCS400-Series microcomputer(4位單片微計算機) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HD404324FS | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:microcomputer designed to increase program productivity |
| HD404324H | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:microcomputer designed to increase program productivity |
| HD404324S | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:microcomputer designed to increase program productivity |
| HD404324U | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:microcomputer designed to increase program productivity |
| HD404324UFS | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:microcomputer designed to increase program productivity |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。