Address transforming circuit and semiconductor memory device including the same

摘要

An address transforming circuit that can change a memory mapping when a system is booted includes a switch control signal generating circuit and an address transforming unit. The switch control signal generating circuit generates alternately enabled switch control signals synchronized with a reset signal. The address transforming unit transforms bits of a first address to generate a second address in response to the switch control signals. Accordingly, a semiconductor memory device including the address transforming circuit has a long lifetime and high reliability.

主权项

1. An address transforming circuit, comprising:
a switch control signal generating circuit configured to generate alternately enabled switch control signals that are synchronized with a reset signal; and an address transforming unit configured to transform bits of a first address to generate a second address in response to the switch control signals, wherein the switch control signals include: a first switch control signal configured to be enabled in response to the reset signal; a second switch control signal configured to be enabled in response to a falling edge of the first switch control signal; and a third switch control signal configured to be enabled in response to a falling edge of the second switch control signal.