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Emulation verification method of nonvolatile memory

A simulation verification and non-volatile technology, which is applied in the field of simulation verification of non-volatile memory, can solve problems such as taking a long time and low simulation efficiency, and achieve the effects of reducing time, improving efficiency, and solving excessively long time

Active Publication Date: 2013-01-16
GIGADEVICE SEMICON SHANGHAI INC +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

From the above operation sequence, it can be seen that it takes a long time to verify the different operating states of the memory block in practice, and the simulation efficiency is extremely low.

Method used

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  • Emulation verification method of nonvolatile memory
  • Emulation verification method of nonvolatile memory
  • Emulation verification method of nonvolatile memory

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Embodiment Construction

[0052] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0053] With the development of simulation technology, the simulation verification of memory functions is generally carried out by using a behavior model (that is, virtual memory) that can replace the actual memory hardware function. This virtual memory can simulate the circuit operation of the actual memory hardware; In the process of simulation verification, technicians can simulate the external environment of the memory circuit by writing test code (testbench), and then use simulation software to view the waveform of the output signal of the circuit, that is, the simulation verification result.

[0054] For example, write the test code as:

[0055] Command: 02h 24’h000000 8’h12 8’h34 8’h56…

[0056] Among them, 02h is the instr...

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Abstract

The invention discloses an emulation verification method of a nonvolatile memory, which comprises the following steps of: obtaining an emulation memory; generating a test code and carrying out emulation verification on the functions of the memory according to the test code; determining a target erasing block according to the address code of an erasing block and carrying out the emulation verification of an erasing step on the target erasing block according to an erasing code and an internal clock parameter, wherein the emulation memory has the internal clock parameter aiming at the erasing step; the internal clock parameter is set to be lower than a normal value; and the test code comprises the erasing code and the address code of the erasing code. By the invention, the time of the emulation verification aiming at the functions of the memory can be reduced on the basis of ensuring the result of the emulation verification, and the emulation verification efficiency of using the virtual memory is improved.

Description

technical field [0001] The invention relates to the technical field of chips, in particular to a simulation verification method of two kinds of non-volatile memories. Background technique [0002] In the process of developing, designing and debugging the memory, it is necessary to simulate and verify the function of the memory. The simulation verification of the memory function can be carried out by using a behavioral model (that is, a virtual memory) that can replace the actual memory hardware function, specifically by generating a test code (testbench) and using simulation software (such as NC_verilog software or modelsim software). [0003] In the prior art, the simulation verification of this virtual memory function is essentially the same as the simulation verification of actual memory hardware. Take the erasing step of the simulation verification process of a certain virtual flash memory (Flash Memory) as an example , the specific steps to be performed include: [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11C29/00G06F9/445G06F11/36G11C11/40G11C16/02
Inventor 舒清明涂美红胡洪
Owner GIGADEVICE SEMICON SHANGHAI INC
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