ATmega328P datasheet(270/345 Pages) ATMEL

Part #	ATmega328P

Description	8-bit Microcontroller with 32K Bytes In-System Programmable Flash

PDF	345 Pages

Scroll/Zoom	100%

Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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270 / 345 page

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7810A–AVR–11/09

ATmega328P [Preliminary]

• Bit 0 – SELFPRGEN: Self Programming Enable

This bit enables the SPM instruction for the next four clock cycles. If written to one together with

either RWWSRE, BLBSET, PGWRT, or PGERS, the following SPM instruction will have a spe-

cial meaning, see description above. If only SELFPRGEN is written, the following SPM

instruction will store the value in R1:R0 in the temporary page buffer addressed by the Z-pointer.

The LSB of the Z-pointer is ignored. The SELFPRGEN bit will auto-clear upon completion of an

SPM instruction, or if no SPM instruction is executed within four clock cycles. During Page Erase

and Page Write, the SELFPRGEN bit remains high until the operation is completed.

Writing any other combination than “10001”, “01001”, “00101”, “00011” or “00001” in the lower

five bits will have no effect.

ATmega328P Datasheet(PDF) 270 Page - ATMEL Corporation