Title:
SEMICONDUCTOR DEVICE
Document Type and Number:
Japanese Patent JP2023042331
Kind Code:
A
Abstract:
To provide a semiconductor device in which size of a protection circuit can be reduced.SOLUTION: A semiconductor device comprises: a first protection circuit; and a second protection circuit. The first protection circuit comprises: a timer circuit; a voltage detection circuit; and a discharge element. The second protection circuit comprises a discharge circuit. The timer circuit is connected between a first pad of a power supply potential side and a second pad of a reference potential side, and controls an operation period of the first protection circuit and the second protection circuit. The voltage detection circuit is connected between the first pad and the second pad at an output side of the timer circuit, and outputs a discharge command when voltage between the first pad and the second pad exceeds a first threshold value. The discharge element is connected between the first pad and the second pad at an output side of the voltage detection circuit, and discharges from the first pad to the second pad according to the discharge command. The discharge circuit is connected between a third pad of the power supply potential side and a fourth pad of the reference potential side at the output side of the timer circuit, and discharges from the third pad to the fourth pad when voltage between the third pad and the fourth pad exceeds a second threshold value.SELECTED DRAWING: Figure 2
Inventors:
ISHIGURO SHIGEFUMI
Application Number:
JP2021149577A
Publication Date:
March 27, 2023
Filing Date:
September 14, 2021
Export Citation:
Assignee:
KIOXIA CORP
International Classes:
H01L21/822; H03K17/08; H03K19/003
Attorney, Agent or Firm:
Nakamura Yukitaka
Miyajima Manabu
Takeshi Sekine
Akira Akaoka
Takeyuki Suzuki
Miyajima Manabu
Takeshi Sekine
Akira Akaoka
Takeyuki Suzuki