MEMORY DEVICE WITH RELAXED TIMING PARAMETER ACCORDING TO TEMPERATURE, OPERATING METHOD THEREOF, AND MEMORY CONTROLLER AND MEMORY SYSTEM USING THE MEMORY DEVICE

摘要

A memory device used with a relaxed timing requirement specification according to temperatures, an operation method thereof, and a memory controller and a memory system using the memory device are provided. The memory device has a first timing characteristic at a first temperature and a second timing characteristic that is longer than the first timing characteristic at a second temperature. If a temperature of the memory device is higher than a reference temperature, the memory controller controls the first timing characteristic as a timing requirement specification of the memory device. If the temperature of the memory device is lower than the reference temperature, the memory controller controls the second timing characteristic as the timing requirement specification of the memory device.

主权项

1. A method of operating a memory device including a plurality of memory cells, the method comprising:
setting a first timing parameter when a temperature of the memory device is a first temperature; applying the first timing parameter when writing data to a set of memory cells of the memory device; switching the first timing parameter to a second timing parameter that includes time periods longer than those of the first timing parameter when a temperature of the memory device is a second temperature; and applying the second timing parameter when writing data to the set of memory cells.