单片机的掩模 ROM集成到单片机中，并在生产单片机时一次性编程写入。
The mask-programmed read only memory of the microcontroller is integrated into the microcontroller and programmed once and for all during manufacture of the microcontroller.
这种内存设备可以被编程一次，所以它们有时被作为写一次或一次性编程设备来看待。
These memory devices can be programmed only once, so they are sometimes referred to as write-once or one-time programmable devices.
AD5172和AD5173是一款双通道、256抽头、一次性可编程（OTP）数字电位器，它采用熔丝链技术实现永久性程序设置。
The AD5172/ AD5173 are dual-channel, 256-position, one-time programmable (OTP) digital potentiometers1 that employ fuse link technology to achieve memory retention of resistance settings.
AD5172和AD5173是一款双通道、256抽头、一次性可编程（OTP）数字电位器，它采用熔丝链技术实现永久性程序设置。
The AD5172/ AD5173 are dual-channel, 256-position, one-time programmable (OTP) digital potentiometers1 that employ fuse link technology to achieve memory retention of resistance settings.
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