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ATtiny44 Datasheet(PDF) 170 Page - ATMEL Corporation

No. de pieza ATtiny44
Descripción Electrónicos  8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash
PDF  236 Pages
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Fabricante Electrónico  ATMEL [ATMEL Corporation]
Página de inicio  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATtiny44 Datasheet(HTML) 170 Page - ATMEL Corporation

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170
8006H–AVR–10/09
ATtiny24/44/84
Figure 19-4. Addressing the Flash which is Organized in Pages
Figure 19-5. High-voltage Serial Programming Waveforms
19.7.5
Programming the EEPROM
The EEPROM is organized in pages, see Table 20-12 on page 183. When programming the
EEPROM, the data is latched into a page buffer. This allows one page of data to be pro-
grammed simultaneously. The programming algorithm for the EEPROM Data memory is as
follows (refer to Table 19-16 on page 171):
1.
Load Command “Write EEPROM”.
2.
Load EEPROM Page Buffer.
3.
Program EEPROM Page. Wait after Instr. 2 until SDO goes high for the “Page Program-
ming” cycle to finish.
4.
Repeat 2 through 3 until the entire EEPROM is programmed or until all data has been
programmed.
5.
End Page Programming by Loading Command “No Operation”.
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
MSB
MSB
MSBLSB
LSB
LSB
012
3
4567
89
10
SDI
PB0
SII
PB1
SDO
PB2
SCI
PB3



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