ATmega88PA Automotive Atmel Corporation, ATmega88PA Automotive Datasheet - Page 276
ATmega88PA Automotive
Manufacturer Part Number
ATmega88PA Automotive
Description
Manufacturer
Atmel Corporation
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• Bit 1 – PGERS: Page Erase
If this bit is written to one at the same time as SELFPRGEN, the next SPM instruction within
four clock cycles executes Page Erase. The page address is taken from the high part of the
Z-pointer. The data in R1 and R0 are ignored. The PGERS bit will auto-clear upon completion
of a Page Erase, or if no SPM instruction is executed within four clock cycles. The CPU is
halted during the entire Page Write operation.
• 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
special 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 com-
pletion 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.
Atmel ATmega48PA/88PA/168PA [Preliminary]
276
9223B–AVR–09/11
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