Patent classifications
G11C11/414
STATIC RANDOM-ACCESS MEMORY (SRAM) ARRAY CIRCUITS INCLUDING BILATERAL WELL TAP CELLS WITH REDUCED WIDTH FOLDED FINGER STRUCTURE
An SRAM array circuit in which a horizontal N-well of a well tap cell in a first row separated from a horizontal N-well of a well tap cell in a second row by a P-type substrate region is disclosed. The well tap cells include a bilateral P-type well tap disposed in the P-type substrate region between the horizontal N-wells in the first and second rows providing ground voltage to the P-type substrate on both sides of a column of well tap cells in the SRAM array circuit, rather than one P-type well tap for each side. Well tap cells without a vertical N-well reduces width, which corresponds to a reduction in width of the SRAM array circuit. The bilateral P-type well tap in a P-type implant region may include a plurality of folded fingers providing the ground voltage to the P-type substrate.
Static random-access memory (SRAM) array circuits including bilateral well tap cells with reduced width folded finger structure
An SRAM array circuit in which a horizontal N-well of a well tap cell in a first row separated from a horizontal N-well of a well tap cell in a second row by a P-type substrate region is disclosed. The well tap cells include a bilateral P-type well tap disposed in the P-type substrate region between the horizontal N-wells in the first and second rows providing ground voltage to the P-type substrate on both sides of a column of well tap cells in the SRAM array circuit, rather than one P-type well tap for each side. Well tap cells without a vertical N-well reduces width, which corresponds to a reduction in width of the SRAM array circuit. The bilateral P-type well tap in a P-type implant region may include a plurality of folded fingers providing the ground voltage to the P-type substrate.
SRAM arrays and methods of manufacturing same
An embodiment static random access memory (SRAM) array includes a first SRAM mini array having a first plurality of functional SRAM cells in a first column of the SRAM array. Each of the first plurality of functional SRAM cells share a first bit line (BL). The SRAM array further includes a second SRAM mini array having a second plurality of functional SRAM cells in the first column. Each of the second plurality of functional SRAM cells share a second BL independently controlled from the first BL. The SRAM array further includes and a SRAM dummy array between the first SRAM mini array and the second SRAM mini array. The SRAM dummy array includes a plurality of SRAM array abut dummy cells in the first column. A first endpoint of the first BL and a second endpoint of the second BL are disposed in the SRAM dummy array.
SRAM arrays and methods of manufacturing same
An embodiment static random access memory (SRAM) array includes a first SRAM mini array having a first plurality of functional SRAM cells in a first column of the SRAM array. Each of the first plurality of functional SRAM cells share a first bit line (BL). The SRAM array further includes a second SRAM mini array having a second plurality of functional SRAM cells in the first column. Each of the second plurality of functional SRAM cells share a second BL independently controlled from the first BL. The SRAM array further includes and a SRAM dummy array between the first SRAM mini array and the second SRAM mini array. The SRAM dummy array includes a plurality of SRAM array abut dummy cells in the first column. A first endpoint of the first BL and a second endpoint of the second BL are disposed in the SRAM dummy array.
SRAM Arrays and Methods of Manufacturing Same
An embodiment static random access memory (SRAM) array includes a first SRAM mini array having a first plurality of functional SRAM cells in a first column of the SRAM array. Each of the first plurality of functional SRAM cells share a first bit line (BL). The SRAM array further includes a second SRAM mini array having a second plurality of functional SRAM cells in the first column. Each of the second plurality of functional SRAM cells share a second BL independently controlled from the first BL. The SRAM array further includes and a SRAM dummy array between the first SRAM mini array and the second SRAM mini array. The SRAM dummy array includes a plurality of SRAM array abut dummy cells in the first column. A first endpoint of the first BL and a second endpoint of the second BL are disposed in the SRAM dummy array.
SRAM Arrays and Methods of Manufacturing Same
An embodiment static random access memory (SRAM) array includes a first SRAM mini array having a first plurality of functional SRAM cells in a first column of the SRAM array. Each of the first plurality of functional SRAM cells share a first bit line (BL). The SRAM array further includes a second SRAM mini array having a second plurality of functional SRAM cells in the first column. Each of the second plurality of functional SRAM cells share a second BL independently controlled from the first BL. The SRAM array further includes and a SRAM dummy array between the first SRAM mini array and the second SRAM mini array. The SRAM dummy array includes a plurality of SRAM array abut dummy cells in the first column. A first endpoint of the first BL and a second endpoint of the second BL are disposed in the SRAM dummy array.
SRAM arrays and methods of manufacturing same
An embodiment static random access memory (SRAM) array includes a first SRAM mini array having a first plurality of functional SRAM cells in a first column of the SRAM array. Each of the first plurality of functional SRAM cells share a first bit line (BL). The SRAM array further includes a second SRAM mini array having a second plurality of functional SRAM cells in the first column. Each of the second plurality of functional SRAM cells share a second BL independently controlled from the first BL. The SRAM array further includes and a SRAM dummy array between the first SRAM mini array and the second SRAM mini array. The SRAM dummy array includes a plurality of SRAM array abut dummy cells in the first column. A first endpoint of the first BL and a second endpoint of the second BL are disposed in the SRAM dummy array.
SRAM arrays and methods of manufacturing same
An embodiment static random access memory (SRAM) array includes a first SRAM mini array having a first plurality of functional SRAM cells in a first column of the SRAM array. Each of the first plurality of functional SRAM cells share a first bit line (BL). The SRAM array further includes a second SRAM mini array having a second plurality of functional SRAM cells in the first column. Each of the second plurality of functional SRAM cells share a second BL independently controlled from the first BL. The SRAM array further includes and a SRAM dummy array between the first SRAM mini array and the second SRAM mini array. The SRAM dummy array includes a plurality of SRAM array abut dummy cells in the first column. A first endpoint of the first BL and a second endpoint of the second BL are disposed in the SRAM dummy array.
SRAM ARRAYS AND METHODS OF MANUFACTURING SAME
An embodiment static random access memory (SRAM) array includes a first SRAM mini array having a first plurality of functional SRAM cells in a first column of the SRAM array. Each of the first plurality of functional SRAM cells share a first bit line (BL). The SRAM array further includes a second SRAM mini array having a second plurality of functional SRAM cells in the first column. Each of the second plurality of functional SRAM cells share a second BL independently controlled from the first BL. The SRAM array further includes and a SRAM dummy array between the first SRAM mini array and the second SRAM mini array. The SRAM dummy array includes a plurality of SRAM array abut dummy cells in the first column. A first endpoint of the first BL and a second endpoint of the second BL are disposed in the SRAM dummy array.
SRAM ARRAYS AND METHODS OF MANUFACTURING SAME
An embodiment static random access memory (SRAM) array includes a first SRAM mini array having a first plurality of functional SRAM cells in a first column of the SRAM array. Each of the first plurality of functional SRAM cells share a first bit line (BL). The SRAM array further includes a second SRAM mini array having a second plurality of functional SRAM cells in the first column. Each of the second plurality of functional SRAM cells share a second BL independently controlled from the first BL. The SRAM array further includes and a SRAM dummy array between the first SRAM mini array and the second SRAM mini array. The SRAM dummy array includes a plurality of SRAM array abut dummy cells in the first column. A first endpoint of the first BL and a second endpoint of the second BL are disposed in the SRAM dummy array.