| 摘要 |
A memory device has one memory cell which can operate in both a single-level cell mode and a multi-level cell mode. The memory device includes a signal transmission path for multi-level cell mode in which a multi-bit digital signal representing various input states to a memory circuit is converted by a digital-to-analog converter and stored in the memory cell and the stored data is read by converting a signal output from the memory cell into a multi-bit digital signal with an analog-to-digital converter. The multi-bit digital signal is outputted from the memory circuit and a signal transmission path for the single-level cell mode in which a single-bit digital signal representing two states inputted to the memory circuit is directly stored in the memory cell and the stored signal stored directly outputted from the memory cell. [Reference numerals] (101) Receive first conversion command to convert working mode of terminal to target mode;(102) According to the first conversion command, convert working mode of terminal to target mode and target mode displays packet conversion (PS) domain service being in contact and circuit conversion (CS) domain service being in contact block |
