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| 型號： | EVAL-ADUC7028QSZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 40/104頁 |
| 文件大?。?/td> | 0K |
| 描述： | KIT DEV ADUC7028 QUICK START |
| 產(chǎn)品培訓(xùn)模塊： | ARM7 Applications & Tools Intro to ARM7 Core & Microconverters Process Control |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | QuickStart™ 套件 |
| 類型： | MCU |
| 適用于相關(guān)產(chǎn)品： | ADuC7028 |
| 所含物品： | 評估板、電源、纜線、軟件和說明文檔 |
| 產(chǎn)品目錄頁面： | 739 (CN2011-ZH PDF) |
| 相關(guān)產(chǎn)品： | ADUC7028BBCZ62-RL-ND - IC MCU FLASH 62K 12BIT ADUC7028BBCZ62-ND - IC MCU FLASH 62K 12BIT |
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ADuC7019/20/21/22/24/25/26/27/28/29
Data Sheet
Rev. F | Page 40 of 104
More information relative to the programmer’s model and the
ARM7TDMI core architecture can be found in the following
materials from ARM:
DDI0029G, ARM7TDMI Technical Reference Manual
DDI-0100, ARM Architecture Reference Manual
INTERRUPT LATENCY
The worst-case latency for a fast interrupt request (FIQ)
consists of the following:
The longest time the request can take to pass through the
synchronizer
The time for the longest instruction to complete (the
longest instruction is an LDM) that loads all the registers
including the PC
The time for the data abort entry
The time for FIQ entry
At the end of this time, the ARM7TDMI executes the instruc-
tion at 0x1C (FIQ interrupt vector address). The maximum
total time is 50 processor cycles, which is just under 1.2 s in a
system using a continuous 41.78 MHz processor clock.
The maximum interrupt request (IRQ) latency calculation is
similar but must allow for the fact that FIQ has higher priority
and may delay entry into the IRQ handling routine for an
arbitrary length of time. This time can be reduced to 42 cycles if
the LDM command is not used. Some compilers have an option
to compile without using this command. Another option is to run
the part in thumb mode where the time is reduced to 22 cycles.
The minimum latency for FIQ or IRQ interrupts is a total of
five cycles, which consist of the shortest time the request can
take through the synchronizer plus the time to enter the
exception mode.
Note that the ARM7TDMI always runs in ARM (32-bit) mode
when in privileged modes, for example, when executing
interrupt service routines.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EVAL-ADUC7029QSZ | 功能描述:EVAL DEV SYSTEM FOR ADUC7029 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 通用嵌入式開發(fā)板和套件（MCU、DSP、FPGA、CPLD等） 系列:* 標(biāo)準(zhǔn)包裝:1 系列:PICDEM™ 類型:MCU 適用于相關(guān)產(chǎn)品:PIC10F206，PIC16F690，PIC16F819 所含物品:板，線纜，元件，CD，PICkit 編程器 產(chǎn)品目錄頁面:659 (CN2011-ZH PDF) |
| EVAL-ADUC7029QSZ | 制造商:Analog Devices 功能描述:Silicon Manufacturer:Analog Devices C |
| EVAL-ADUC7032QSPZ | 制造商:Analog Devices 功能描述:EVAL BD FOR ADUC7032 - Bulk |
| EVAL-ADUC7033QSPZ | 制造商:Analog Devices 功能描述:QUICK START DEVELOPMENT SYSTEM - Bulk |
| EVAL-ADUC7034QSPZ | 制造商:Analog Devices 功能描述:EVALUATION BOARD - Boxed Product (Development Kits) |
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