Data reading method and device of charged erasable programmable read-only memory

Abstract

The embodiment of the invention provides a data reading method for a charged erasable programmable read-only memory, which comprises the following steps: when a data acquisition request is received, determining the model, a first initial address, a reading quantity and a second initial address of a memory to be read; performing write operation according to the model of the to-be-read memory, wherein the write operation is used for sending write operation information containing the first initial address to the to-be-read memory; and starting reading from the first initial address of the to-be-read memory by adopting a sequential reading mode, continuously reading the data of the read quantity, and storing the read data into the storage array of the main chip unit according to the second initial address. According to the invention, a sequential reading mode is adopted, the Eeprom reading efficiency and reading speed can be improved, and the method is suitable for various types of Eeprom and has universality.

Description

technical field [0001] One or more embodiments of this specification relate to the field of data reading technology, in particular to a method and device for reading data from a charged erasable programmable read-only memory, and an electric control system for household appliances. Background technique [0002] Eeprom (Electrically Erasable Programmable Read-Only Memory in English, Electrically Erasable Programmable Read-Only Memory in Chinese) can be used in many household appliances, by using Eeprom to store some important parameters and status data. The models of external Eeprom commonly used by most home appliances are 24c02, 24c04, 24c08, 24c16, 24c32 or 24c64. There are usually three operation methods for reading data from an external Eeprom: "read current address", "random read" and "sequential read". Among them, "current address read" and "random read" can only read One byte of data stored in a certain address in the Eeprom needs to stop the write operation after ea...

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Problems solved by technology

[0003] Now, although many home appliances use the 24c02 Eeprom with 256 bytes of storage space to meet the needs, some products need to use Eeprom with larger storage space, for example, 24c04, 24c08, 24c16, 24c32, 24c64 Eeprom , and for different types of Eeprom, the control methods for the read operation are also different, so the software used by the main control chip for reading is in different forms and cannot be used universally.

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