Method and circuitry for preventing propagation of undesired ATD pulses in a flash memory device
US5563843A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1995 |
| Grant date | Oct 8, 1996 |
| Priority date | — |
| Expiry date | Mar 9, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C8/18
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An Address Transition Detection (ATD) circuit for use in memory devices. The ATD circuit includes a pulse generator for generating an ATD pulse. For asynchronous memory device, the pulse generator generates the ATD pulse in response to an address transition, wherein for synchronous devices, the pulse generator generates the ATD pulse in response to control signals that indicate a valid address. The ATD circuit also includes a control circuit and a mask circuit. The control circuit is operative to asserting a first control signal in response to receiving the pulse. The mask circuit is coupled between the output of the pulse generator and the control circuit for preventing propagation of the ATD pulse if the first control signal is active.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.