Precharge Voltage Supplying Circuit

Abstract

A precharge voltage supplying circuit comprises a transistor operating in response to a control signal, wherein the transistor is connected between a first node to which an internal voltage is supplied and a second node to which a precharge voltage is supplied, and a resistance element connected in parallel to the transistor between the first node and the second node.

1 - 19 . (canceled) 
     
     
         20 . A precharge voltage supplying circuit, comprising:
 a transistor operating in response to a control signal, wherein the transistor is connected between a first node to which an internal voltage is supplied and a second node to which a precharge voltage is supplied; and   a resistance element connected in parallel to the transistor between the first node and the second node.   
     
     
         21 . The precharge voltage supplying circuit of  claim 20 , wherein the precharge voltage is supplied to a pair of bit lines in response to a bit line equalizing control signal. 
     
     
         22 . The precharge voltage supplying circuit of  claim 20 , wherein the precharge voltage is produced by a voltage drop across the resistance element or by a voltage drop across the transistor which is turned on in response to the control signal. 
     
     
         23 . A precharge voltage supplying circuit, comprising:
 a transistor operating in response to a control signal, wherein the transistor is connected between a first node to which an internal voltage is supplied and a second node to which a precharge voltage is supplied; and   a resistance element connected in series to the transistor between the first node and the second node.   
     
     
         24 . The precharge voltage supplying circuit of  claim 23 , wherein the precharge voltage is supplied to a pair of bit lines in response to a bit line equalizing control signal. 
     
     
         25 . The precharge voltage supplying circuit of  claim 26 , further comprising:
 wherein the logic unit includes a NOR gate for a NOR operation of a ground voltage signal and the test mode signal.   
     
     
         26 . The precharge voltage supplying circuit of  claim 23 , further comprising:
 a logic unit configured to receive a test mode signal and produce an enable signal; and   a switching element for connecting the first and second nodes in response to the enable signal from the logic unit.   
     
     
         27 . The precharge voltage supplying circuit of  claim 23 , wherein the switching element is a NMOS transistor connected between the first node and the second node. 
     
     
         28 . The precharge voltage supplying circuit of  claim 20 , further comprising:
 a logic unit configured to receive a test mode signal and produce an enable signal; and   a switching element for connecting the first and second nodes in response to the enable signal from the logic unit.   
     
     
         29 . The precharge voltage supplying circuit of  claim 28 , wherein the logic unit includes a NOR gate for a NOR operation of a ground voltage signal and the test mode signal. 
     
     
         30 . The precharge voltage supplying circuit of  claim 29 , wherein the switching element is a NMOS transistor connected between the first node and the second node.