2019年11月29日星期五
Initialization of site writes is the same as initialization of byte writes
Generate Functions BYTE Write: A compose operation needs an 8-bit information term deal with adhering to thedevice deal with word and acknowledgment. Upon receipt of the tackle, the EEPROM will once again reply that has a zero and afterwards clock in the to start with 8-bit info phrase.
Followingreceipt of the 8-bit details term, the EEPROM will output a zero plus the addressingdevice, like a microcontroller, should terminate the produce sequence which has a stop condi-tion. At this time the EEPROM enters an internally timed publish cycle, tWR, to thenonvolatile memory.
All inputs are disabled through this generate cycle along with the EEPROM willnot answer until eventually the create is comprehensive (seek advice from Figure 2).Page Generate: The 1K/2K EEPROM is able of an 8-byte web site write, along with the 4K, 8Kand 16K equipment are capable of 16-byte site writes.
A web page compose is initiated the same as a byte generate, even so the microcontroller will not senda end condition right after the initial knowledge word is clocked in. In its place, soon after the EEPROMacknowledges receipt of the initially details term, the microcontroller can transmit nearly seven(1K/2K) or fifteen (4K, 8K, 16K) a lot more information phrases.
The EEPROM will react with a zeroafter each individual information phrase obtained. The microcontroller must terminate the web page writesequence which has a prevent problem (make reference to Figure three).The information word deal with decrease 3 (1K/2K) or four (4K, 8K, 16K) bits are internallyincremented pursuing the receipt of every facts term. The upper information word address bitsare not incremented, retaining the memory site row location.
If the phrase address,internally generated, reaches the page boundary, the subsequent byte is positioned at thebeginning of the exact same site. If a lot more than eight (1K/2K) or sixteen (4K, 8K, 16K) datawords are transmitted to your EEPROM, the data phrase deal with will “roll over” and previ-ous details will probably be overwritten.
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