AT32UC3A3/A4

1

2

说明................................................. .............................................. 3

Blockdiagram ................................................. .......................................... 4

2.1

处理器和架构............................................... ................................ 5

3

4

信号说明................................................ ................................. 6

封装和引脚排列............................................... ................................ 11

4.1

4.2

4.3

4.4

4.5

包...........................................................................................................11

外设复用的I / O线........................................... ...................... 14

信号说明................................................ .......................................... 18

I / O口线注意事项............................................. ...................................... 23

电源注意事项................................................ ..................................... 24

5

电源注意事项................................................ ........................... 25

5.1

5.2

电源................................................ ................................................ 25

电压调节器................................................ ............................................ 25

6

I / O口线注意事项............................................. ............................ 26

6.1

6.2

6.3

6.4

JTAG管脚.......................................................................................................26

RESET_N引脚................................................ .................................................. 26

TWI引脚..........................................................................................................26

GPIO引脚........................................................................................................26

7

回忆................................................. ............................................... 27

7.1

7.2

7.3

7.4

嵌入式存储器................................................ ...................................... 27

物理内存映射............................................... ...................................... 27

外设地址映射............................................... ................................... 28

CPU局部总线的映射.............................................. ................................... 30

8

外设................................................. ............................................ 32

8.1

8.2

8.3

8.4

时钟连接................................................ ........................................... 32

外设复用的I / O线........................................... ...................... 32

振荡器引脚................................................ .............................................. 35

外围概述................................................ ......................................... 37

9

引导顺序................................................ ....................................... 46

9.1

9.2

开始时钟的............................................... ............................................. 46

初始指令获取.............................................. ............................ 46

10电气特性............................................... ....................... 47

10.1

绝对最大额定值* .............................................. ............................. 47

89

32072C–AVR32–2010/03