- 您现在的位置：买卖IC网 > PDF目录132984 > MB9AF311MPMC 32-BIT, FLASH, 40 MHz, RISC MICROCONTROLLER, PQFP80 PDF资料下载
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： | 58/114页 |
| 文件大小： | 1357K |
| 代理商： | MB9AF311MPMC |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页当前第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页第110页第111页第112页第113页第114页
ATmega48PA/88PA/168PA [DATASHEET]
9223F–AVR–04/14
48
11.9
Register Description
11.9.1 MCUSR – MCU Status Register
The MCU status register provides information on which reset source caused an MCU reset.
Bit 7:4: Reserved
These bits are unused bits in the Atmel ATmega48PA/88PA/168PA, and will always read as zero.
Bit 3 – WDRF: Watchdog System Reset Flag
This bit is set if a watchdog system reset occurs. The bit is reset by a power-on reset, or by writing a logic zero to the flag.
Bit 2 – BORF: Brown-out Reset Flag
This bit is set if a brown-out reset occurs. The bit is reset by a power-on reset, or by writing a logic zero to the flag.
Bit 1 – EXTRF: External Reset Flag
This bit is set if an external reset occurs. The bit is reset by a power-on reset, or by writing a logic zero to the flag.
Bit 0 – PORF: Power-on Reset Flag
This bit is set if a power-on reset occurs. The bit is reset only by writing a logic zero to the flag.
To make use of the reset flags to identify a reset condition, the user should read and then reset the MCUSR as early as
possible in the program. If the register is cleared before another reset occurs, the source of the reset can be found by
examining the reset flags.
11.9.2 WDTCSR – Watchdog Timer Control Register
Bit 7 – WDIF: Watchdog Interrupt Flag
This bit is set when a time-out occurs in the watchdog timer and the watchdog timer is configured for interrupt. WDIF is
cleared by hardware when executing the corresponding interrupt handling vector. Alternatively, WDIF is cleared by writing a
logic one to the flag. When the I-bit in SREG and WDIE are set, the watchdog time-out interrupt is executed.
Bit 6 – WDIE: Watchdog Interrupt Enable
When this bit is written to one and the I-bit in the status register is set, the watchdog interrupt is enabled. If WDE is cleared in
combination with this setting, the watchdog timer is in interrupt mode, and the corresponding interrupt is executed if time-out
in the watchdog timer occurs. If WDE is set, the watchdog timer is in interrupt and system reset mode.
The first time-out in the watchdog timer will set WDIF. Executing the corresponding interrupt vector will clear WDIE and
WDIF automatically by hardware (the watchdog goes to system reset mode). This is useful for keeping the watchdog timer
security while using the interrupt. To stay in interrupt and system reset mode, WDIE must be set after each interrupt. This
should however not be done within the interrupt service routine itself, as this might compromise the safety-function of the
watchdog system reset mode. If the interrupt is not executed before the next time-out, a system reset will be applied.
Bit
7654321
0
––––
WDRF
BORF
EXTRF
PORF
MCUSR
Read/Write
RRRR
R/W
Initial Value
0000
See Bit Description
Bit
765
43210
WDIF
WDIE
WDP3
WDCE
WDE
WDP2
WDP1
WDP0
WDTCSR
Read/Write
R/W
Initial Value
0
X
0
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。