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ATA6613 Datasheet(PDF) 45 Page - ATMEL Corporation |
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ATA6613 Datasheet(HTML) 45 Page - ATMEL Corporation |
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45 / 364 page  45 9111G–AUTO–05/10 ATA6612/ATA6613 7.5.3.2 The EEPROM Address Register – EEARH and EEARL • Bits 15..9 – Res: Reserved Bits These bits are reserved bits in the ATA6612/ATA6613 and will always read as zero. • Bits 8..0 – EEAR8..0: EEPROM Address The EEPROM Address Registers – EEARH and EEARL specify the EEPROM address in the 512 bytes EEPROM space. The EEPROM data bytes are addressed linearly between 0 and 255/511/511. The initial value of EEAR is undefined. A proper value must be written before the EEPROM may be accessed. 7.5.3.3 The EEPROM Data Register – EEDR • Bits 7..0 – EEDR7.0: EEPROM Data For the EEPROM write operation, the EEDR Register contains the data to be written to the EEPROM in the address given by the EEAR Register. For the EEPROM read operation, the EEDR contains the data read out from the EEPROM at the address given by EEAR. 7.5.3.4 The EEPROM Control Register – EECR • Bits 7..6 – Res: Reserved Bits These bits are reserved bits in the ATA6612/ATA6613 and will always read as zero • Bits 5, 4 – EEPM1 and EEPM0: EEPROM Programming Mode Bits The EEPROM Programming mode bit setting defines which programming action that will be triggered when writing EEPE. It is possible to program data in one atomic operation (erase the old value and program the new value) or to split the Erase and Write operations in two different operations. Bit 1514 13 121110 9 8 ––– –––– EEAR8 EEARH EEAR7 EEAR6 EEAR5 EEAR4 EEAR3 EEAR2 EEAR1 EEAR0 EEARL 765 4321 0 Read/Write R R RRRRR R/W R/W R/W R/W R/W R/W R/W R/W R/W Initial Value 000 0000 X X XXXX XXX Bit 7 6 54321 0 MSB LSB EEDR Read/Write R/W R/W R/W R/W R/W R/W R/W R/W Initial Value 0 0 00000 0 Bit 765 43 2 1 0 – – EEPM1 EEPM0 EERIE EEMPE EEPE EERE EECR Read/Write R R R/W R/W R/W R/W R/W R/W Initial Value 0 0 X X 0 0 X 0 |
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