- 您现在的位置：买卖IC网 > PDF目录134951 > Q80C32-30SHXXX:RD (TEMIC SEMICONDUCTORS) 8-BIT, 30 MHz, MICROCONTROLLER, CQFP44 PDF资料下载
参数资料
| 型号： | Q80C32-30SHXXX:RD |
| 厂商： | TEMIC SEMICONDUCTORS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, 30 MHz, MICROCONTROLLER, CQFP44 |
| 文件页数： | 50/83页 |
| 文件大小： | 8336K |
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页当前第50页第51页第52页第53页第54页第55页第56页第57页第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
49
32117D–AVR-01/12
AT32UC3C
6.2
Startup Considerations
This chapter summarizes the boot sequence of the AT32UC3C. The behavior after power-up is
controlled by the Power Manager. For specific details, refer to the Power Manager chapter.
6.2.1
Starting of clocks
At power-up, the BOD33 and the BOD18 are enabled. The device will be held in a reset state by
the power-up circuitry, until the VDDIN_33 (resp. VDDCORE) has reached the reset threshold of
the BOD33 (resp BOD18). Refer to the Electrical Characteristics for the BOD thresholds. Once
the power has stabilized, the device will use the System RC Oscillator (RCSYS, 115KHz typical
frequency) as clock source. The BOD18 and BOD33 are kept enabled or are disabled according
to the fuse settings (See the Fuse Setting section in the Flash Controller chapter).
On system start-up, the PLLs are disabled. All clocks to all modules are running. No clocks have
a divided frequency, all parts of the system receive a clock with the same frequency as the inter-
nal RC Oscillator.
6.2.2
Fetching of initial instructions
After reset has been released, the AVR32UC CPU starts fetching instructions from the reset
address, which is 0x8000_0000. This address points to the first address in the internal Flash.
The internal Flash uses VDDIO voltage during read and write operations. It is recommended to
use the BOD33 to monitor this voltage and make sure the VDDIO is above the minimum level
(3.0V).
The code read from the internal Flash is free to configure the system to use for example the
PLLs, to divide the frequency of the clock routed to some of the peripherals, and to gate the
clocks to unused peripherals.
相关PDF资料 |
PDF描述 |
|---|---|
| Q80C32-36:R | 8-BIT, 36 MHz, MICROCONTROLLER, CQFP44 |
| Q80C32-36SHXXX:R | 8-BIT, 36 MHz, MICROCONTROLLER, CQFP44 |
| Q80C32-42:D | 8-BIT, 42 MHz, MICROCONTROLLER, CQFP44 |
| Q80C32-42:R | 8-BIT, 42 MHz, MICROCONTROLLER, CQFP44 |
| Q80C32-42SHXXX:D | 8-BIT, 42 MHz, MICROCONTROLLER, CQFP44 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| Q80N-5 | 制造商:POWERBOX 制造商全称:Powerbox 功能描述:0.5 WATTS - 100 - 10KV SINGLE OUTPUT DC/DC INDUSTRIAL |
| Q-810 | 功能描述:交流电源插头和插座 NEMA L5-15P LOCKING DEVICE RoHS:否 制造商:Hirose Connector 产品:Plugs 系列: 电流额定值:3 A 电压额定值:30 V 安装角:Straight 安装风格:Cable 颜色: 端口数量: |
| Q81022511000000 | 制造商:Epson Electronics America Inc 功能描述:TF2-J4DB1 184.3200MHZ |
| Q811 | 制造商:Captive Fastener Corporation 功能描述: |
| Q-812 | 制造商:Qualtek Electronics Corporation 功能描述:NEMA TWIST-LOCK 制造商:Qualtek Electronics Corporation 功能描述:Nema St Blade Twist Lock |
发布紧急采购，3分钟左右您将得到回复。