Ferroelectric memory plate power reduction
View Patent ↗Methods, systems, and devices for ferroelectric memory plate power reduction are described. A plate line may be coupled with a voltage source, a capacitor, and one or more sections of a bank of ferroelectric memory cells. During a write operation, the capacitor may be discharged onto the plate line and the resulting voltage may be adjusted (e.g., increased) by the voltage source before writing one or more memory cells. During a write-back operation, a capacitor associated with one or more memory cells may be discharged onto the plate line and stored at the capacitor. The charge may be re-applied to the plate line and adjusted (e.g., increased) by the voltage source during the write-back.
1. An apparatus, comprising:
a first ferroelectric memory cell coupled with a plate line;
a first capacitor coupled with the first ferroelectric memory cell through the plate line and a first switching component, the first capacitor configured to apply a first voltage to the first ferroelectric memory cell through the plate line when the first switching component is activated; and
a voltage source coupled with the plate line through a second switching component and coupled with the first capacitor through a third switching component, wherein the voltage source is configured to apply a second voltage to the plate line when the second switching component is activated and wherein the voltage source is configured to charge the first capacitor when the third switching component is activated.
2. The apparatus of claim 1 , further comprising:
a fourth switching component coupled with the first capacitor, wherein the voltage source is configured to charge the first capacitor when the fourth switching component is deactivated.
3. The apparatus of claim 2 , wherein the first switching component is coupled with a first side of the first capacitor, and the third switching component and the fourth switching component are coupled with a second side of the first capacitor.
4. The apparatus of claim 2 , further comprising:
a fifth switching component coupled with the plate line, wherein the voltage source is configured to apply the second voltage to the plate line when the fifth switching component is deactivated, and wherein a ground voltage source is configured to discharge the plate line when the fifth switching component is activated.
5. The apparatus of claim 1 , further comprising:
a second ferroelectric memory cell coupled with the plate line, the first capacitor coupled with the second ferroelectric memory cell through the plate line and a fourth switching component associated with the second ferroelectric memory cell, wherein the first switching component is associated with the first ferroelectric memory cell.
6. The apparatus of claim 1 , further comprising:
a plurality of ferroelectric memory cells coupled with the plate line, the first capacitor configured to apply the first voltage to the plurality of ferroelectric memory cells and the voltage source configured to apply the second voltage to the plurality of ferroelectric memory cells when the second switching component is activated.
7. The apparatus of claim 6 , further comprising:
a fourth switching component coupled with the plate line, the first capacitor configured to apply the first voltage to the plate line and the voltage source configured to apply the second voltage to the plate line when the fourth switching component is activated, wherein the fourth switching component is associated with a second ferroelectric memory cell from a section of memory cells.