电子发烧友网>电子资料下载>电子资料>国民技术N32G45X&N32G4FR系列硬件设计指南V1

国民技术N32G45X&N32G4FR系列硬件设计指南V1

4110474 2022-11-07 | rar | 0.74 MB | 次下载 | 免费

资料介绍

1. N32G45X/N32G4FR 系列 MCU 硬件设计检查列表................................................................................. 1

1.1 电源供电简介....................................................................................................................................... 1

1.2 供电方案............................................................................................................................................... 1

1.3 备用电池............................................................................................................................................... 1

1.4 外部引脚复位电路............................................................................................................................... 1

1.5 外部时钟电路....................................................................................................................................... 1

1.6 启动引脚连接....................................................................................................................................... 2

1.7 独立 ADC 转换器 ................................................................................................................................ 2

1.8 IO 上电脉冲处理.................................................................................................................................. 4

1.9 IO 耐压值.............................................................................................................................................. 5

1.10 防静电设计......................................................................................................................................... 6

1.10.1 PCB 设计 ................................................................................................................................. 6

1.10.2 ESD 防护器件 ......................................................................................................................... 6

1.11 调试接口............................................................................................................................................. 7

1.1 BOOT 串口接口................................................................................................................................... 7

2. 整体设计建议................................................................................................................................................. 8

3. 最小系统参考设计原理图............................................................................................................................. 9

3.1 LQFP100 ............................................................................................................................................... 9

3.2 LQFP80 ............................................................................................................................................... 10

3.3 LQFP64 ................................................................................................................................................11

3.4 LQFP48 ............................................................................................................................................... 12

3.5 LQFP32 ............................................................................................................................................... 13

3.6 QFN40................................................................................................................................................. 14

3.7 QFN32................................................................................................................................................. 15

4. PCB LAYOUT 参考................................................................................................................................... 16

5. 典型故障分析............................................................................................................................................... 17

5.1 电源管脚与地短路............................................................................................................................. 17

5.2 GPIO 损坏........................................................................................................................................... 17

5.3 ADC 采样不准 ................................................................................................................................... 17

6. 历史版本....................................................................................................................................................... 18

7. 声明............................................................................................................................................................... 19