79C2040 查看數據表（PDF） - MAXWELL TECHNOLOGIES

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79C2040

20 Megabit (512K x 40-Bit) EEPROM MCM

MAXWELL TECHNOLOGIES 

20 Megabit (512 x 40-Bit) EEPROM MCM

79C2040

FIGURE 7. SOFTWARE DATA PROTECTION TIMING WAVEFORM (1) (IN PROTECTION MODE)

FIGURE 8. SOFTWARE DATA PROTECTION WAVEFORM (2) (IN NON-PROTECTION MODE)

EEPROM APPLICATION NOTES

This application note describes the programming procedures for the EEPROM modules and with details of various

techniques to preserve data integrity.

Automatic Page Write

Page-mode write feature allows 1 to 128 bytes of data to be written into the EEPROM in a single write cycle. Loading

the first byte of data, the data load window opens 30µ s for the second byte. In the same manner each additional byte

of data can be loaded within 30µ s of the preceding falling edge of either WE or CE. When CE and WE are kept high

for 100µ s after data input, the EEPROM enters the write mode automatically and the data input is written into the

EEPROM.

WE, CE Pin Operation

During a write cycle, addresses are latched by the falling edge of WE or CE, and data is latched by the rising edge of

WE or CE.

04.20.05 Rev 1

All data sheets are subject to change without notice 11

©2005 Maxwell Technologies

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