ATMEGA169 ATMEL [ATMEL Corporation], ATMEGA169 Datasheet - Page 275
ATMEGA169
Manufacturer Part Number
ATMEGA169
Description
8-bit Microcontroller with 16K Bytes In-System Programmable Flash
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.ATMEGA169.pdf
(365 pages)
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Programming the EEPROM
2514P–AVR–07/06
Figure 120. Addressing the Flash Which is Organized in Pages
Note:
Figure 121. Programming the Flash Waveforms
Note:
The EEPROM is organized in pages, see Table 122 on page 269. When programming
the EEPROM, the program data is latched into a page buffer. This allows one page of
data to be programmed simultaneously. The programming algorithm for the EEPROM
data memory is as follows (refer to “Programming the Flash” on page 273 for details on
Command, Address and Data loading):
1. A: Load Command “0001 0001”.
2. G: Load Address High Byte (0x00 - 0xFF).
3. B: Load Address Low Byte (0x00 - 0xFF).
4. C: Load Data (0x00 - 0xFF).
5. E: Latch data (give PAGEL a positive pulse).
RESET +12V
RDY/BSY
PAGEL
XTAL1
DATA
XA1
XA0
BS1
BS2
WR
OE
PROGRAM MEMORY
1. PCPAGE and PCWORD are listed in Table 121 on page 269.
1. “XX” is don’t care. The letters refer to the programming description above.
PROGRAM
COUNTER
0x10
PAGE
A
PAGE ADDRESS
WITHIN THE FLASH
ADDR. LOW
B
PCMSB
DATA LOW
C
PCPAGE
DATA HIGH
D
XX
E
PAGEMSB
ADDR. LOW
PCWORD
B
WORD ADDRESS
WITHIN A PAGE
DATA LOW
C
(1)
F
DATA HIGH
INSTRUCTION WORD
D
PAGE
XX
E
ATmega169/V
ADDR. HIGH
G
(1)
H
PCWORD[PAGEMSB:0]:
00
01
02
PAGEEND
XX
275
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