COP8CCR9LVA8 (National) PDF资料下载 Datasheet(88/111 页)

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型号：	COP8CCR9LVA8
厂商：	National Semiconductor
文件页数：	88/111页
文件大小：	0K
描述：	IC MCU EEPROM 8BIT 68-PLCC
标准包装：	18
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：	欠压检测/复位，POR，PWM，WDT
输入/输出数：	59
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：	68-LCC（J 形引线）
包装：	管件
其它名称：	*COP8CCR9LVA8

SNOS535I – OCTOBER 2000 – REVISED MARCH 2013

Figure 5-24. VIS Operation

5.15.4 NON-MASKABLE INTERRUPT

5.15.4.1 Pending Flag

There is a pending flag bit associated with the non-maskable Software Trap interrupt, called STPND. This

pending flag is not memory-mapped and cannot be accessed directly by the software.

The pending flag is reset to zero when a device Reset occurs. When the non-maskable interrupt occurs,

the associated pending bit is set to 1. The interrupt service routine should contain an RPND instruction to

reset the pending flag to zero. The RPND instruction always resets the STPND flag.

5.15.4.2 Software Trap

The Software Trap is a special kind of non-maskable interrupt which occurs when the INTR instruction

(used to acknowledge interrupts) is fetched from program memory and placed in the instruction register.

This can happen in a variety of ways, usually because of an error condition. Some examples of causes

are listed below.

If the program counter incorrectly points to a memory location beyond the programmed Flash memory

space, the unused memory location returns zeros which is interpreted as the INTR instruction.

If the stack is popped beyond the allowed limit (address 06F Hex), a 7FFF will be loaded into the PC.

Since the Option Register resides at this location, and to maintain the integrity of the stack overpop

protection, the Flash memory will return a zero on an instruction fetch and a software trap will be

triggered.

A Software Trap can be triggered by a temporary hardware condition such as a brownout or power supply

glitch.

The Software Trap has the highest priority of all interrupts. When a Software Trap occurs, the STPND bit

is set. The GIE bit is not affected and the pending bit (not accessible by the user) is used to inhibit other

interrupts and to direct the program to the ST service routine with the VIS instruction. Nothing can interrupt

a Software Trap service routine except for another Software Trap. The STPND can be reset only by the

RPND instruction or a chip Reset.

Functional Description

相关代理商/技术参数	参数描述
COP8CDE9	制造商:NSC 制造商全称:National Semiconductor 功能描述:8-Bit CMOS Flash Microcontroller with 8k Memory, Virtual EEPROM, 10-Bit A/D and Brownout Reset
COP8CDE9HLQ7	制造商:NSC 制造商全称:National Semiconductor 功能描述:8-Bit CMOS Flash Microcontroller with 8k Memory, Virtual EEPROM, 10-Bit A/D and Brownout Reset
COP8CDE9HLQ9	功能描述:IC MCU FLASH 8BIT 8K A/D 44LLP RoHS:是类别:集成电路 (IC) >> 嵌入式 - 微控制器，系列:COP8™ 8C 标准包装:250 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 EEPROM 大小:- 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 ~ 125°C 封装/外壳:48-LQFP 包装:托盘配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323
COP8CDE9HVA7	制造商:NSC 制造商全称:National Semiconductor 功能描述:8-Bit CMOS Flash Microcontroller with 8k Memory, Virtual EEPROM, 10-Bit A/D and Brownout Reset
COP8CDE9HVA9	制造商:NSC 制造商全称:National Semiconductor 功能描述:8-Bit CMOS Flash Microcontroller with 8k Memory, Virtual EEPROM, 10-Bit A/D and Brownout Reset

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