收藏本站
参数资料
型号： MB9AF311MPMC
元件分类： 微控制器/微处理器
英文描述： 32-BIT, FLASH, 40 MHz, RISC MICROCONTROLLER, PQFP80
封装： 0.50 MM PITCH, PLASTIC, LQFP-80
文件页数： 51/114页
文件大小： 1357K
代理商： MB9AF311MPMC
41
ATmega48PA/88PA/168PA [DATASHEET]
9223F–AVR–04/14
11.
System Control and Reset
11.1
Resetting the AVR
During reset, all I/O registers are set to their initial values, and the program starts execution from the reset vector. For Atmel
ATmega168PA the instruction placed at the reset vector must be a JMP – absolute jump – instruction to the reset handling
routine. For the Atmel ATmega48PA and Atmel ATmega88PA, the instruction placed at the reset vector must be an RJMP –
relative jump – instruction to the reset handling routine. If the program never enables an interrupt source, the interrupt
vectors are not used, and regular program code can be placed at these locations. This is also the case if the reset vector is
in the application section while the interrupt vectors are in the boot section or vice versa (Atmel ATmega88PA/168PA only).
The circuit diagram in Figure 11-1 on page 42 shows the reset logic. Table 29-5 on page 272 defines the electrical
parameters of the reset circuitry.
The I/O ports of the AVR are immediately reset to their initial state when a reset source goes active. This does not require
any clock source to be running.
After all reset sources have gone inactive, a delay counter is invoked, stretching the internal reset. This allows the power to
reach a stable level before normal operation starts. The time-out period of the delay counter is defined by the user through
the SUT and CKSEL fuses. The different selections for the delay period are presented in
Section 9.2 “Clock Sources” on page 25.
11.2
Reset Sources
The Atmel ATmega48PA/88PA/168PA has four sources of reset:
●
Power-on reset. The MCU is reset when the supply voltage is below the power-on reset threshold (VPOT).
●
External reset. The MCU is reset when a low level is present on the RESET pin for longer than the minimum pulse
length.
●
Watchdog system reset. The MCU is reset when the watchdog timer period expires and the watchdog system reset
mode is enabled.
●
Brown-out reset. The MCU is reset when the supply voltage VCC is below the brown-out reset threshold (VBOT) and the
brown-out detector is enabled.
相关PDF资料
PDF描述
MSP430G2152IRSA16 16-BIT, FLASH, 16 MHz, RISC MICROCONTROLLER, PQCC16
M37704E2EFP 16-BIT, OTPROM, 16 MHz, MICROCONTROLLER, PQFP80
MSM65544-JS 8-BIT, MROM, 10 MHz, MICROCONTROLLER, PQCC68
MSM65516SS 8-BIT, MROM, 10 MHz, MICROCONTROLLER, PDIP64
MSM65P512JS 8-BIT, OTPROM, 10 MHz, MICROCONTROLLER, PQCC44
相关代理商/技术参数
参数描述
MB9AF312KPMC1-G-JNE2 功能描述:ARM? Cortex?-M3 FM3 MB9A310K Microcontroller IC 32-Bit 40MHz 160KB (160K x 8) FLASH 52-LQFP (10x10) 制造商:cypress semiconductor corp 系列:FM3 MB9A310K 包装:托盘 零件状态:有效 核心处理器:ARM? Cortex?-M3 核心尺寸:32-位 速度:40MHz 连接性:CSIO，I2C，LIN，UART/USART，USB 外设:DMA，LVD，POR，PWM，WDT I/O 数:36 程序存储容量:160KB（160K x 8） 程序存储器类型:闪存 EEPROM 容量:- RAM 容量:16K x 8 电压 - 电源（Vcc/Vdd）:2.7 V ~ 5.5 V 数据转换器:A/D 8x12b 振荡器类型:内部 工作温度:-40°C ~ 105°C（TA） 封装/外壳:52-LQFP 供应商器件封装:52-LQFP（10x10） 标准包装:160
MB9AF312KPMC-ES-E1 制造商:FUJITSU 功能描述:
MB9AF312KPMC-G-JNE1 制造商:FUJITSU 功能描述:
MB9AF312KPMC-G-JNE2 功能描述:ARM? Cortex?-M3 FM3 MB9A310K Microcontroller IC 32-Bit 40MHz 160KB (160K x 8) FLASH 48-LQFP (7x7) 制造商:cypress semiconductor corp 系列:FM3 MB9A310K 包装:托盘 零件状态:有效 核心处理器:ARM? Cortex?-M3 核心尺寸:32-位 速度:40MHz 连接性:CSIO，I2C，LIN，UART/USART，USB 外设:DMA，LVD，POR，PWM，WDT I/O 数:36 程序存储容量:160KB（160K x 8） 程序存储器类型:闪存 EEPROM 容量:- RAM 容量:16K x 8 电压 - 电源（Vcc/Vdd）:2.7 V ~ 5.5 V 数据转换器:A/D 8x12b 振荡器类型:内部 工作温度:-40°C ~ 105°C（TA） 封装/外壳:48-LQFP 供应商器件封装:48-LQFP（7x7） 标准包装:250
MB9AF312KQN-ES-AWE2 制造商:FUJITSU 功能描述:
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*