803 b is electrically connected to the ground voltage line 814 g like reference numerals in fig8 b refer to the same elements in aforementioned embodiments unless otherwise specified those skilled in the art should understand from the disclosure that the esd protection function of the esd protection device 1003 and the esd protection device 903 will not be affected by whether the second node 803 b is coupled to the power supply voltage line 814 p or to the ground voltage line 814 g and this applies to all the following embodiments fig9 a illustrates an esd protection apparatus for a programmable device according to another embodiment of the present invention wherein the main difference to fig7 a is that the gate of the esd protection device 903 is electrically connected to one end of the conducting wire 1103 and the other end of the conducting wire 1103 is electrically connected to the ground voltage line 1101 so that the esd protection device 903 stays in normally off status when there is no esd and the programmable device can work properly unaffected by the esd protection device 903 when esd occurs the esd protection device 903 has interface breakdown between n type dopant and p well n pw and will form a low impedance current path to bypass transient esd current produced by the esd to protect the programmable device from the damage of the esd similarly this esd protection apparatus also applies to the esd protection when the second node 803 b is coupled to the ground voltage line 814 g as shown in fig9 b same reference numerals in fig9 a and 9b refer to the same elements in fig7 a unless.