参数资料
| 型号： | COP8CDR9IMT8 |
| 厂商： | National Semiconductor |
| 文件页数： | 89/111页 |
| 文件大小： | 0K |
| 描述： | IC MCU CMOS 8BIT 48-TSSOP |
| 标准包装： | 38 |
| 系列： | COP8™ 8C |
| 核心处理器： | COP8 |
| 芯体尺寸： | 8-位 |
| 速度： | 20MHz |
| 连通性： | Microwire/Plus（SPI），UART/USART |
| 外围设备： | POR，PWM，WDT |
| 输入/输出数： | 39 |
| 程序存储器容量： | 32KB（32K x 8） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 1K x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 2.7 V ~ 5.5 V |
| 数据转换器： | A/D 16x10b |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 48-TFSOP（0.240"，6.10mm 宽） |
| 包装： | 管件 |
| 其它名称： | *COP8CDR9IMT8 |
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SNOS535I – OCTOBER 2000 – REVISED MARCH 2013
The Software Trap indicates an unusual or unknown error condition. Generally, returning to normal
execution at the point where the Software Trap occurred cannot be done reliably. Therefore, the Software
Trap service routine should re-initialize the stack pointer and perform a recovery procedure that re-starts
the software at some known point, similar to a device Reset, but not necessarily performing all the same
functions as a device Reset. The routine must also execute the RPND instruction to reset the STPND flag.
Otherwise, all other interrupts will be locked out. To the extent possible, the interrupt routine should record
or indicate the context of the device so that the cause of the Software Trap can be determined.
If the user wishes to return to normal execution from the point at which the Software Trap was triggered,
the user must first execute RPND, followed by RETSK rather than RETI or RET. This is because the
return address stored on the stack is the address of the INTR instruction that triggered the interrupt. The
program must skip that instruction in order to proceed with the next one. Otherwise, an infinite loop of
Software Traps and returns will occur.
Programming a return to normal execution requires careful consideration. If the Software Trap routine is
interrupted by another Software Trap, the RPND instruction in the service routine for the second Software
Trap will reset the STPND flag; upon return to the first Software Trap routine, the STPND flag will have the
wrong state. This will allow maskable interrupts to be acknowledged during the servicing of the first
Software Trap. To avoid problems such as this, the user program should contain the Software Trap
routine to perform a recovery procedure rather than a return to normal execution.
Under normal conditions, the STPND flag is reset by a RPND instruction in the Software Trap service
routine. If a programming error or hardware condition (brownout, power supply glitch, etc.) sets the
STPND flag without providing a way for it to be cleared, all other interrupts will be locked out. To alleviate
this condition, the user can use extra RPND instructions in the main program and in the Watchdog service
routine (if present). There is no harm in executing extra RPND instructions in these parts of the program.
Figure 5-25. VIS Flow Chart
Copyright 2000–2013, Texas Instruments Incorporated
Functional Description
79
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相关代理商/技术参数 |
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|---|---|
| COP8CDR9IMTA8 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:8-Bit CMOS Flash Microcontroller with 32k Memory, Virtual EEPROM, 10-Bit A/D and Brownout |
| COP8CDR9KMT7 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:8-Bit CMOS Flash Microcontroller with 32k Memory, Virtual EEPROM, 10-Bit A/D and Brownout |
| COP8CDR9KMT8 | 功能描述:IC MCU EEPROM 8BIT 32K 56-TSSOP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:COP8™ 8C 其它有关文件:STM32F101T8 View All Specifications 特色产品:STM32 32-bit Cortex MCUs 标准包装:490 系列:STM32 F1 核心处理器:ARM? Cortex?-M3 芯体尺寸:32-位 速度:36MHz 连通性:I²C，IrDA，LIN，SPI，UART/USART 外围设备:DMA，PDR，POR，PVD，PWM，温度传感器，WDT 输入/输出数:26 程序存储器容量:64KB（64K x 8） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:10K x 8 电压 - 电源 (Vcc/Vdd):2 V ~ 3.6 V 数据转换器:A/D 10x12b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:36-VFQFN，36-VFQFPN 包装:托盘 配用:497-10030-ND - STARTER KIT FOR STM32497-8853-ND - BOARD DEMO STM32 UNIV USB-UUSCIKSDKSTM32-PL-ND - KIT IAR KICKSTART STM32 CORTEXM3497-8512-ND - KIT STARTER FOR STM32F10XE MCU497-8505-ND - KIT STARTER FOR STM32F10XE MCU497-8304-ND - KIT STM32 MOTOR DRIVER BLDC497-6438-ND - BOARD EVALUTION FOR STM32 512K497-6289-ND - KIT PERFORMANCE STICK FOR STM32MCBSTM32UME-ND - BOARD EVAL MCBSTM32 + ULINK-MEMCBSTM32U-ND - BOARD EVAL MCBSTM32 + ULINK2更多... 其它名称:497-9032STM32F101T8U6-ND |
| COP8CDR9KMTA8 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:8-Bit CMOS Flash Microcontroller with 32k Memory, Virtual EEPROM, 10-Bit A/D and Brownout |
| COP8CDR9LVA7 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:8-Bit CMOS Flash Microcontroller with 32k Memory, Virtual EEPROM, 10-Bit A/D and Brownout |
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