ATmega169P datasheet(28/393 Pages) ATMEL

No. de pieza	ATmega169P

Descripción Electrónicos	8-bit Microcontroller with 16K Bytes In-System Programmable Flash

PDF	393 Pages

Scroll/Zoom	100%

Fabricante Electrónico	ATMEL [ATMEL Corporation]

Página de inicio	http://www.atmel.com

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28 / 393 page

8018N–AVR–08/09

ATmega169P

the selected address. If EEMWE is zero, setting EEWE will have no effect. When EEMWE has

been written to one by software, hardware clears the bit to zero after four clock cycles. See the

description of the EEWE bit for an EEPROM write procedure.

• Bit 1 – EEWE: EEPROM Write Enable

The EEPROM Write Enable Signal EEWE is the write strobe to the EEPROM. When address

and data are correctly set up, the EEWE bit must be written to one to write the value into the

EEPROM. The EEMWE bit must be written to one before a logical one is written to EEWE, oth-

erwise no EEPROM write takes place.

• Bit 0 – EERE: EEPROM Read Enable

The EEPROM Read Enable Signal EERE is the read strobe to the EEPROM. When the correct

address is set up in the EEAR Register, the EERE bit must be written to a logic one to trigger the

EEPROM read. The EEPROM read access takes one instruction, and the requested data is

available immediately. When the EEPROM is read, the CPU is halted for four cycles before the

next instruction is executed.

ATmega169P Datasheet(PDF) 28 Page - ATMEL Corporation