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参数资料
| 型号： | EVAL-ADUC7023QSPZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 14/96页 |
| 文件大小： | 0K |
| 描述： | KIT DEV FOR ADUC7023 QUICK START |
| 标准包装： | 1 |
| 类型： | MCU |
| 适用于相关产品： | ARM7TDMI |
| 所含物品： | 板 |
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Data Sheet
ADuC7023
| Page 21 of 96
More information relative to the model of the programmer and
the ARM7TDMI core architecture can be found in ARM7TDMI
technical and ARM architecture manuals available directly from
ARM Ltd.
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, and the time for the
data abort and 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 could 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.
The ARM7TDMI always runs in ARM (32-bit) mode when in
privileged modes, for example, when executing interrupt
service routines.
Rev. E
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相关代理商/技术参数 |
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|---|---|
| EVAL-ADUC7023QSPZ1 | 功能描述:BOARD EVAL FOR ADUC7023 RoHS:是 类别:编程器，开发系统 >> 通用嵌入式开发板和套件（MCU、DSP、FPGA、CPLD等） 系列:QuickStart™ PLUS 套件 产品培训模块:Blackfin® Processor Core Architecture Overview Blackfin® Device Drivers Blackfin® Optimizations for Performance and Power Consumption Blackfin® System Services 特色产品:Blackfin? BF50x Series Processors 标准包装:1 系列:Blackfin® 类型:DSP 适用于相关产品:ADSP-BF548 所含物品:板，软件，4x4 键盘，光学拨轮，QVGA 触摸屏 LCD 和 40G 硬盘 配用:ADZS-BFBLUET-EZEXT-ND - EZ-EXTENDER DAUGHTERBOARDADZS-BFLLCD-EZEXT-ND - BOARD EXT LANDSCAP LCD INTERFACE 相关产品:ADSP-BF542BBCZ-4A-ND - IC DSP 16BIT 400MHZ 400CSBGAADSP-BF544MBBCZ-5M-ND - IC DSP 16BIT 533MHZ MDDR 400CBGAADSP-BF542MBBCZ-5M-ND - IC DSP 16BIT 533MHZ MDDR 400CBGAADSP-BF542KBCZ-6A-ND - IC DSP 16BIT 600MHZ 400CSBGAADSP-BF547MBBCZ-5M-ND - IC DSP 16BIT 533MHZ MDDR 400CBGAADSP-BF548BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGAADSP-BF547BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGAADSP-BF544BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGAADSP-BF542BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGA |
| EVAL-ADuC7023QSPZ2 | 制造商:AD 制造商全称:Analog Devices 功能描述:Precision Analog Microcontroller, 12-Bit Analog I/O, ARM7TDMI MCU with Enhanced IRQ Handler |
| EVALADUC7023QSPZU1 | 制造商:Analog Devices 功能描述: |
| EVAL-ADUC7024QS | 制造商:Analog Devices 功能描述:QUICK START DEVELOPMENT SYSTEM - Bulk |
| EVAL-ADUC7024QS-U2 | 制造商:Analog Devices 功能描述:QUICK START DEVL SYST EVAL BOARD I.C. - Bulk |
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