US 12,451,890 B2
Power down circuit and power down method
Chih-Hang Chang, Hsinchu (TW)
Assigned to NANYA TECHNOLOGY CORPORATION, New Taipei (TW)
Filed by NANYA TECHNOLOGY CORPORATION, New Taipei (TW)
Filed on Mar. 22, 2023, as Appl. No. 18/188,427.
Prior Publication US 2024/0322684 A1, Sep. 26, 2024
Int. Cl. H03K 17/22 (2006.01); H03L 5/02 (2006.01)
CPC H03L 5/02 (2013.01) [H03K 17/223 (2013.01)] 9 Claims
OG exemplary drawing
 
8. A power down method, comprising:
holding a first power signal to generate a second power signal;
comparing the first power signal and the second power signal to generate a comparison result on determining whether the first power signal is dropped to be lower than a first threshold voltage; and
holding the second power signal to be greater than a second threshold voltage for a predetermined time length after the first power signal is dropped to be lower than the first threshold voltage.