参数资料
型号: MC56F8322VFAER2
厂商: Freescale Semiconductor
文件页数: 88/136页
文件大小: 0K
描述: IC HYBRID CTRLR 16BIT 48-LQFP
标准包装: 2,000
系列: 56F8xxx
核心处理器: 56800E
芯体尺寸: 16-位
速度: 60MHz
连通性: CAN,SCI,SPI
外围设备: POR,PWM,温度传感器,WDT
输入/输出数: 21
程序存储器容量: 40KB(20K x 16)
程序存储器类型: 闪存
RAM 容量: 6K x 16
电压 - 电源 (Vcc/Vdd): 2.25 V ~ 3.6 V
数据转换器: A/D 6x12b
振荡器型: 内部
工作温度: -40°C ~ 105°C
封装/外壳: 48-LQFP
包装: 带卷 (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
相关PDF资料
PDF描述
MCF5207CVM166J IC MCU 32BIT RISC 144-MAPBGA
MC68908GZ16MFJE IC MCU 8BIT 16K FLASH 32-LQFP
EGG.0B.307.CLL CONN RCPT 7POS PNL MNT SKT W/NUT
PKG.M0.8SL.LG CONN RCPT 8POS PNL MNT SCKT SLDR
HR25A-7J-8P CONN JACK 8POS MALE SOLDER
相关代理商/技术参数
参数描述
MC56F8323 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:16-bit Digital Signal Controllers
MC56F8323EVM 功能描述:开发板和工具包 - 其他处理器 MC56F832X Dev Kit RoHS:否 制造商:Freescale Semiconductor 产品:Development Systems 工具用于评估:P3041 核心:e500mc 接口类型:I2C, SPI, USB 工作电源电压:
MC56F8323EVM 制造商:Freescale Semiconductor 功能描述:Tools Development kit Kit Con
MC56F8323EVME 功能描述:开发板和工具包 - 其他处理器 MC56F8323 EVAL BRD RoHS:否 制造商:Freescale Semiconductor 产品:Development Systems 工具用于评估:P3041 核心:e500mc 接口类型:I2C, SPI, USB 工作电源电压:
MC56F8323EVME 制造商:Freescale Semiconductor 功能描述:Evaluation Kit for MC56F832x and MC56F81