 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
ATtiny24-20SSU Datasheet(PDF) 21 Page - ATMEL Corporation |
|
|
|||||||||||||||||||||||||||||
ATtiny24-20SSU Datasheet(HTML) 21 Page - ATMEL Corporation |
|
|
21 / 236 page  21 8006H–AVR–10/09 ATtiny24/44/84 5.5.2 EEARL – EEPROM Address Register • Bit 7 – EEAR7: EEPROM Address This is the most significant EEPROM address bit of ATtiny44. In devices with less EEPROM, i.e. ATtiny24, this bit is reserved and will always read zero. The initial value of the EEPROM Address Register (EEAR) is undefined and a proper value must therefore be written before the EEPROM is accessed. • Bits 6..0 – EEAR6..0: EEPROM Address These are the (low) bits of the EEPROM Address Register. The EEPROM data bytes are addressed linearly in the range 0...128/256/512. The initial value of EEAR is undefined and a proper value must be therefore be written before the EEPROM may be accessed. 5.5.3 EEDR – EEPROM Data Register • 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. 5.5.4 EECR – EEPROM Control Register • Bit 7 – Res: Reserved Bit This bit is reserved for future use and will always read as 0 in ATtiny24/44/84. For compatibility with future AVR devices, always write this bit to zero. After reading, mask out this bit. • Bit 6 – Res: Reserved Bit This bit is reserved in the ATtiny24/44/84 and will always read as zero. • Bits 5, 4 – EEPM1 and EEPM0: EEPROM Programming Mode Bits The EEPROM Programming mode bits setting defines which programming action that will be triggered when writing EEPE. It is possible to program data in one atomic operation (erase the Bit 765 432 10 0x1E (0x3E) EEAR7 EEAR6 EEAR5 EEAR4 EEAR3 EEAR2 EEAR1 EEAR0 EEARL Read/Write R/W R/W R/W R/W R/W R/W R/W R/W Initial Value X X X X X X X X Bit 765 432 10 0x1D (0x3D) EEDR7 EEDR6 EEDR5 EEDR4 EEDR3 EEDR2 EEDR1 EEDR0 EEDR Read/Write R/W R/W R/W R/W R/W R/W R/W R/W Initial Value 0 0 0 0 0 0 0 0 Bit 765 432 10 0x1C (0x3C) – – 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 |
|
Link URL |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link to Datasheet | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
New Zealand ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
