RESISTANCE CHANGE MEMORY AND WRITE METHOD OF THE SAME
First Claim
1. A resistance change memory comprising:
- a resistance change element having a high-resistance state and a low-resistance state in accordance with write information; and
a write circuit configured to supply a write current that the write current flowing through the resistance change element is held constant before and after the resistance change element is changed from the high-resistance state to the low-resistance state, and apply a write voltage that the write voltage applied to the resistance change element is held constant before and after the resistance change element is changed from the low-resistance state to the high-resistance state.
4 Assignments
0 Petitions
Accused Products
Abstract
A resistance change memory includes a resistance change element having a high-resistance state and a low-resistance state in accordance with write information, and a write circuit configured to supply a write current that the write current flowing through the resistance change element is held constant before and after the resistance change element is changed from the high-resistance state to the low-resistance state, and apply a write voltage that the write voltage applied to the resistance change element is held constant before and after the resistance change element is changed from the low-resistance state to the high-resistance state.
-
Citations
20 Claims
-
1. A resistance change memory comprising:
-
a resistance change element having a high-resistance state and a low-resistance state in accordance with write information; and a write circuit configured to supply a write current that the write current flowing through the resistance change element is held constant before and after the resistance change element is changed from the high-resistance state to the low-resistance state, and apply a write voltage that the write voltage applied to the resistance change element is held constant before and after the resistance change element is changed from the low-resistance state to the high-resistance state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A resistance change memory comprising a memory cell in which a resistance change element having a high-resistance state and a low-resistance state in accordance with write information and a cell transistor are connected in series, wherein
when changing the resistance change element from the high-resistance state to the low-resistance state, a write current is supplied from the resistance change element to the cell transistor, and when changing the resistance change element from the low-resistance state to the high-resistance state, the write current is supplied from the cell transistor to the resistance change element.
-
16. A write method of a resistance change memory including a resistance change element having a high-resistance state and a low-resistance state in accordance with write information,
the method comprising supplying a write current that the write current flowing through the resistance change element is held constant before and after the resistance change element is changed from the high-resistance state to the low-resistance state, and applying a write voltage that the write voltage applied to the resistance change element is held constant before and after the resistance change element is changed from the low-resistance state to the high-resistance state.
Specification