Rainbow Electronics ATmega3290P_V User Manual
Page 289
289
ATmega329/3290/649/6490
2552H–AVR–11/06
H. Program Page
1.
Give WR a negative pulse. This starts programming of the entire page of data.
RDY/BSY goes low.
2.
Wait until RDY/BSY goes high (See Figure 122 for signal waveforms).
I. Repeat B through H until the entire Flash is programmed or until all data has been
programmed.
J. End Page Programming
1.
1. Set XA1, XA0 to “10”. This enables command loading.
2.
Set DATA to “0000 0000”. This is the command for No Operation.
3.
Give XTAL1 a positive pulse. This loads the command, and the internal write sig-
nals are reset.
Figure 121. Addressing the Flash Which is Organized in Pages
(1)
Note:
1. PCPAGE and PCWORD are listed in Table 132 on page 286.
PROGRAM MEMORY
WORD ADDRESS
WITHIN A PAGE
PAGE ADDRESS
WITHIN THE FLASH
INSTRUCTION WORD
PAGE
PCWORD[PAGEMSB:0]:
00
01
02
PAGEEND
PAGE
PCWORD
PCPAGE
PCMSB
PAGEMSB
PROGRAM
COUNTER
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