Atmel AT89C系列單片機電路板設計指南
Designing Boards with Atmel AT89C51,AT89C52, AT89C1051, and AT89C2051 for Writing Flash at In-Circuit Test. Recent improvements in chips and teste...
Designing Boards with Atmel AT89C51,AT89C52, AT89C1051, and AT89C2051 for Writing Flash at In-Circuit Test. Recent improvements in chips and teste...
設計一種基于AT89C52的語音錄放系統,利用單片機、ISD2560語音錄放器件、麥克風、揚聲器等元器件實現硬件電路的設計,并利用C51高級語言設計ISD2560器件控制字的寫入和定時中斷程序。經軟硬件調試,結果表明該系統錄放效果良好,具有一定的工程實用價值。 Abst...
The PCA9555 is a 24-pin CMOS device that provides 16 bits of General Purpose parallelInput/Output (GPIO) expansion for I2C-bus/SMBus applications and ...
The PCA9557 is a silicon CMOS circuit which provides parallel input/output expansion for SMBus and I2C-bus applications. The PCA9557 consists of an...
Designing Boards with Atmel AT89C51, AT89C52, AT89C1051, and AT89C2051 for Writing Flash at In-Circuit Test:Recent improvements in chips andtesters ha...