ATMEGA644PV ATMEL [ATMEL Corporation], ATMEGA644PV Datasheet - Page 299

• Manufacturer Part Number: ATMEGA644PV
• Description: 8-bit Microcontroller with 16/32/64K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

8011D–AVR–02/07
3. Set DATA = Address extended high byte (0x00 - 0xFF).
4. Give XTAL1 a positive pulse. This loads the address high byte.
I. Program Page
1. Set BS2, BS1 to “00”
2. Give WR a negative pulse. This starts programming of the entire page of data. RDY/BSY
3. Wait until RDY/BSY goes high (See
J. Repeat B through I until the entire Flash is programmed or until all data has been
programmed.
K. 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 signals are
Figure 25-2. Addressing the Flash Which is Organized in Pages
Note:
goes low.
reset.
1. PCPAGE and PCWORD are listed in
PROGRAM MEMORY
PROGRAM
COUNTER
PAGE
PAGE ADDRESS
WITHIN THE FLASH
PCMSB
PCPAGE
Figure 25-3 on page 300
PAGEMSB
PCWORD
Table 25-7 on page
WORD ADDRESS
WITHIN A PAGE
ATmega164P/324P/644P
INSTRUCTION WORD
PAGE
294.
for signal waveforms).
(1)
PCWORD[PAGEMSB:0]:
00
01
02
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