VOLTAGE GENERATOR FOR ANTIFUSE PROGRAM

摘要

PURPOSE: A voltage generator for an anti-fuse program is provided to increase charge pumping efficiency by preventing a breakdown. CONSTITUTION: An N+ junction is formed in an N well, and a P+ junction is formed in a P well. Thus, the junction between metals or poly lines to each well is strengthened. A P-typed substrate is grounded, and the N well intercepts the connection between the P well and the P-typed substrate. The N well is connected to node voltage the same with the P well in order to intercept current flow between wells. A breakdown voltage between the P-typed substrates is considerably high. Therefore, the breakdown voltage is not generated in the N well.