參數(shù)資料
型號： MC56F8322VFAER2
廠商： Freescale Semiconductor
文件頁數(shù)： 88/136頁
文件大?。?/td> 0K
描述： IC HYBRID CTRLR 16BIT 48-LQFP
標(biāo)準(zhǔn)包裝： 2,000
系列： 56F8xxx
核心處理器： 56800E
芯體尺寸： 16-位
速度： 60MHz
連通性： CAN，SCI，SPI
外圍設(shè)備： POR，PWM，溫度傳感器，WDT
輸入/輸出數(shù)： 21
程序存儲器容量： 40KB（20K x 16）
程序存儲器類型： 閃存
RAM 容量： 6K x 16
電壓 - 電源 (Vcc/Vdd)： 2.25 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 6x12b
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 105°C
封裝/外殼： 48-LQFP
包裝： 帶卷 (TR)
配用： MC56F8323EVME-ND - BOARD EVALUATION MC56F8323
Functional Description
56F8322 Technical Data, Rev. 16
Freescale Semiconductor
55
Preliminary
5.3.2
Interrupt Nesting
Interrupt exceptions may be nested to allow an IRQ of higher priority than the current exception to be
serviced. The following tables define the nesting requirements for each priority level.
5.3.3
Fast Interrupt Handling
Fast interrupts are described in the DSP56800E Reference Manual. The interrupt controller recognizes
fast interrupts before the core does.
A fast interrupt is defined (to the ITCN) by:
1. Setting the priority of the interrupt as level 2, with the appropriate field in the IPR registers
2. Setting the FIMn register to the appropriate vector number
3. Setting the FIVALn and FIVAHn registers with the address of the code for the fast interrupt
When an interrupt occurs, its vector number is compared with the FIM0 and FIM1 register values. If a
match occurs, and it is a level 2 interrupt, the ITCN handles it as a fast interrupt. The ITCN takes the vector
address from the appropriate FIVALn and FIVAHn registers, instead of generating an address that is an
offset from the VBA.
The core then fetches the instruction from the indicated vector adddress and if it is not a JSR, the core starts
its fast interrupt handling.
Table 5-1 Interrupt Mask Bit Definition
SR[9]1
1. Core status register bits indicating current interrupt mask within the core.
SR[8]1
Permitted Exceptions
Masked Exceptions
0
Priorities 0, 1, 2, 3
None
0
1
Priorities 1, 2, 3
Priority 0
1
0
Priorities 2, 3
Priorities 0, 1
1
Priority 3
Priorities 0, 1, 2
Table 5-2. Interrupt Priority Encoding
IPIC_LEVEL[1:0]1
1. See IPIC field definition in Section 5.6.30.2
Current Interrupt
Priority Level
Required Nested
Exception Priority
00
No Interrupt or SWILP
Priorities 0, 1, 2, 3
01
Priority 0
Priorities 1, 2, 3
10
Priority 1
Priorities 2, 3
11
Priorities 2 or 3
Priority 3
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC56F8323 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:16-bit Digital Signal Controllers
MC56F8323EVM 功能描述:開發(fā)板和工具包 - 其他處理器 MC56F832X Dev Kit RoHS:否 制造商:Freescale Semiconductor 產(chǎn)品:Development Systems 工具用于評估:P3041 核心:e500mc 接口類型:I2C, SPI, USB 工作電源電壓:
MC56F8323EVM 制造商:Freescale Semiconductor 功能描述:Tools Development kit Kit Con
MC56F8323EVME 功能描述:開發(fā)板和工具包 - 其他處理器 MC56F8323 EVAL BRD RoHS:否 制造商:Freescale Semiconductor 產(chǎn)品:Development Systems 工具用于評估:P3041 核心:e500mc 接口類型:I2C, SPI, USB 工作電源電壓:
MC56F8323EVME 制造商:Freescale Semiconductor 功能描述:Evaluation Kit for MC56F832x and MC56F81
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