Abstract:
A multiple-time programming apparatus and method using one-time programming (OTP) elements are provided. The apparatus comprises a first adjusting OTP element, a second adjusting OTP element and a logic device. An adjusting data is written into the first adjusting OTP element. When a modification in an IC is desired, the value of a desired data and the prior adjusting data is performed exclusive-OR (XOR, hereinafter) together and written into the second adjusting OTP element. The logic device performs XOR on the first OTP signal outputted from the first adjusting OTP element and the second OTP signal outputted from second adjusting OTP element, and outputs the resulting OTP signal with desired value. Thus, the apparatus and the method according to an embodiment of the present invention allow modification of data using the OTP elements that prevents from using expensive multiple-time programming elements.
Abstract:
An apparatus and method adapted to use one-time programming (OTP) devices for multiple-time programming is disclosed. The apparatus includes a selecting device, a first adjusting OTP device, a second adjusting OTP device and a judging device. The judging device outputs a selecting signal according to whether the second adjusting OTP element is programmed. According to the selecting signal, the selecting device selects and outputs either the first OTP signal outputted from the first adjusting OTP device or the second OTP signal outputted from the second adjusting OTP device. By using this apparatus and method, the present invention serves multiple-time programming function without the high costs of manufacturing multiple-time programming devices.
Abstract:
A multiple-time programming apparatus and method using one-time programming (OTP) elements are provided. The apparatus comprises a first adjusting OTP element, a second adjusting OTP element and a logic device. An adjusting data is written into the first adjusting OTP element. When a modification in an IC is desired, the value of a desired data and the prior adjusting data is performed exclusive-OR (XOR, hereinafter) together and written into the second adjusting OTP element. The logic device performs XOR on the first OTP signal outputted from the first adjusting OTP element and the second OTP signal outputted from second adjusting OTP element, and outputs the resulting OTP signal with desired value. Thus, the apparatus and the method according to an embodiment of the present invention allow modification of data using the OTP elements that prevents from using expensive multiple-time programming elements.
Abstract:
An apparatus and method adapted to use one-time programming (OTP) devices for multiple-time programming is disclosed. The apparatus includes a selecting device, a first adjusting OTP device, a second adjusting OTP device and a judging device. The judging device outputs a selecting signal according to whether the second adjusting OTP element is programmed. According to the selecting signal, the selecting device selects and outputs either the first OTP signal outputted from the first adjusting OTP device or the second OTP signal outputted from the second adjusting OTP device. By using this apparatus and method, the present invention serves multiple-time programming function without the high costs of manufacturing multiple-time programming devices.