µPD75048
5. EEPROM
The µPD75048 contains the 1024-word x 4-bit EEPROM (Electrically Erasable PROM).
The EEPROM of the µPD75048 has the following characteristics.
• The EEPROM can retain its contents even if the power is turned off.
• In the same manner as the static RAM, data can be manipulated (auto-erase/write/read) in 4-bit
or 8-bit units by using a memory manipulation instruction
• The contens of EEPROM are automatically erased or written by hardware, so that the overhead
of the software is alleviated.
• Write time .... 10 ms.
• Number of write operation100,000 times (guaranteed).
• Write operation can be controlled by interrupt.
• When write operation is completed an interrupt occurs.
• When overwrite is executed. (Write operation is executed during write operation)
• Whether or not the EEPROM is possible to be written can be checked by individually checking the
write status flag.
21