參數(shù)資料
型號(hào)： DS80C410
英文描述： Network Microcontrollers with Ethernet and CAN
中文描述： 具有以太網(wǎng)和CAN接口的網(wǎng)絡(luò)微控制器
文件頁數(shù)： 47/102頁
文件大?。?/td> 2637K
代理商： DS80C410
DS80C410/DS80C411 Network Microcontrollers with Ethernet and CAN
Figure 1.
Example External Memory Map—Merged Program/Data
Enhanced Quad Data Pointers
The DS80C410 offers enhanced features for accelerating the access and movement of data. It contains four data
pointers (DPTR0, DPTR1, DPTR2, and DPTR3), in comparison to the single data pointer offered on the original
8051, and allows the user to define, for each data pointer, whether the INC DPTR instruction increments or
decrements the selected pointer. Also, realizing that many data accesses occur in large contiguous blocks, the
DS80C410 can be configured to automatically increment or decrement a data pointer on execution of certain
instructions. This improvement greatly speeds access to consecutive pieces of data since hardware can now
accomplish a task (advancing the data pointer) that previously required software execution time. Finally, each pair
of data pointers (DPTR0, DPTR1 or DPTR2, DPTR3) can be configured for an auto-toggle mode. When placed into
this mode, certain data pointer-related instructions toggle the active data-pointer selection to the other pointer in the
pair. Enabling the auto-toggle feature, with one pointer to source data and a second pointer to destination data,
greatly speeds the copying of large data blocks.
DPTR0 is located at the same address as the original 8051 data pointer, allowing the DS80C410 to execute
standard 8051 code with no modifications. The registers making up the second, third, and fourth data pointers are
located at SFR address locations not used in the original 8051. To access the extended 24-bit address range
supported by the DS80C410, a third, high-order byte (DPXn) has been added to each pointer so that each data
pointer is now composed of the SFR combination DPXn+DPHn+DPLn.
Table 8
summarizes the SFRs that make
up each data pointer.
47 of 102
CE0
=2M x 8
PCE0
= 1M x 8
PCE1
= 1M x 8
PCE2
= 1M x 8
PCE3
= 1M x 8
CE1
=2M x 8
CE7
= 2M x 8
CE6
= 2M x 8
CE5
= 2M x 8
CE4
= 2M x 8
CE3
= 2M x 8
CE2
=2M x 8
PROGRAM
MEMORY
DATA
MEMORY
N
CE0
= 2M x 8
PCE2
= 1M x 8
PCE3
= 1M x 8
CE1
= 2M x 8
CE7
= 2M x 8
CE6
= 2M x 8
CE5
= 2M x 8
CE4
= 2M x 8
CE3
= 2M x 8
CE2
= 2M x 8
PROGRAM
MEMORY
DATA
MEMORY
N
PROGRAM/
DATA
MEMORY
PDCE3
= 1
PDCE0
= 1
BEFORE
AFTER
相關(guān)PDF資料
PDF描述
DS80C410-FNY Network Microcontrollers with Ethernet and CAN
DS80C411-FNY Network Microcontrollers with Ethernet and CAN
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS80C410_09 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Network Microcontrollers with Ethernet and CAN
DS80C410-FNY 功能描述:8位微控制器 -MCU Network MCU w/Ethernet & CAN RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
DS80C410-FNY+ 功能描述:8位微控制器 -MCU Network MCU w/Ethernet & CAN RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
DS80C411 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Network Microcontrollers with Ethernet and CAN
DS80C411-FNY 功能描述:8位微控制器 -MCU Network MCU w/Ethernet & CAN RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
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