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ATmega324P 데이터시트(PDF) 304 Page - ATMEL Corporation

부품명 ATmega324P
상세설명  8-bit Microcontroller with 16/32/64K Bytes In-System Programmable Flash
PDF  377 Pages
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제조업체  ATMEL [ATMEL Corporation]
홈페이지  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATmega324P 데이터시트(HTML) 304 Page - ATMEL Corporation

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304
7674F–AVR–09/09
ATmega164P/324P/644P
H. Load Address Extended High byte (Address bits 23..16)
1.
Set XA1, XA0 to “00”. This enables address loading.
2.
Set BS2, BS1 to “10”. This selects the address extended high byte.
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
goes low.
3.
Wait until RDY/BSY goes high (See Figure 25-3 on page 305 for signal waveforms).
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
reset.
Figure 25-2. Addressing the Flash Which is Organized in Pages
(1)
Note:
1. PCPAGE and PCWORD are listed in Table 25-7 on page 299.
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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