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參數(shù)資料
| 型號： | DS80CH11 |
| 英文描述： | System Energy Manager |
| 中文描述： | 系統(tǒng)能量管理器 |
| 文件頁數(shù)： | 25/88頁 |
| 文件大?。?/td> | 598K |
| 代理商： | DS80CH11 |
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DS80CH11
011200 25/88
4.2.2
A second data pointer register (DPTR 1) is incorporated
into the SEM in addition to the standard one in the 8051.
This feature allows faster execution of many operations
involving data memory access, such as block moves.
Dual Data Pointer
Operation of the dual data pointer function is fully docu-
mented in the Dallas High Speed Micro User’s Guide.
4.3
Interface techniques for interfacing external memory as
program or data storage to the SEM via Ports 0 and 2
are described in the Dallas High Speed Micro User’s
Guide.
EXTERNAL MEMORY INTERFACE
4.4
The SEM incorporates a full 256 bytes of direct RAM.
This RAM is accessed in a manner identical to that of a
DIRECT (SCRATCHPAD) RAM ACCESS
standard 80C52 compatible device. A full description of
this memory along with the instructions that access it is
contained in the Dallas High Speed Micro User’s Guide.
4.5
Special Function Registers (SFRs) control most special
features of the SEM. This allows the SEM to have many
new features but use the same instruction set as the
8051. When writing software to use a new feature, an
equate statement defines the SFR to an assembler or
compiler. This is the only change needed to access the
new function. The SEM duplicates the SFRs contained
in the standard 80C52. Table 4–2 is a summary of the
values loaded into the SEM’s SFR’s on reset. Table 4–3
is a summary of all of the SFR’s and the control bits they
contain.
SPECIAL FUNCTION REGISTERS
相關PDF資料 |
PDF描述 |
|---|---|
| DS83C520 | EPROM/ROM High-Speed Micro |
| DS83C520-ECL | EPROM/ROM High-Speed Micro |
| DS83C520-ENL | EPROM/ROM High-Speed Micro |
| DS83C520-MCL | EPROM/ROM High-Speed Micro |
| DS83C520-MNL | EPROM/ROM High-Speed Micro |
相關代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS80CH11+E02 | 制造商:Maxim from Components Direct 功能描述:MAXIM DS80CH11+E02 SYSTEM ENERGY MANAGERS - Trays 制造商:Maxim 功能描述:Maxim DS80CH11+E02 System Energy Managers |
| DS80CH11-E02 | 制造商:Maxim from Components Direct 功能描述:MAXIM DS80CH11-E02 SYSTEM ENERGY MANAGERS - Trays 制造商:Maxim 功能描述:Maxim DS80CH11-E02 System Energy Managers |
| DS80E100 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:5 to 12.5 Gbps, Power-Saver Equalizer for Backplanes and Cables |
| DS80EP100 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:5 to 12.5 Gbps, Power-Saver Equalizer for Backplanes and Cables |
| DS80EP100_08 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:5 to 12.5 Gbps, Power-Saver Equalizer for Backplanes and Cables |
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