
180
8197C–AVR–05/11
ATtiny261A/461A/861A
Figure 18-4.
Addressing the Flash Which is Organized in Pages
Note:
In the figure below, “XX” means don’t care. The numbers in the figure refer to the programming
description above.
WR
Figure 18-5.
Flash Programming Waveforms
18.7.6
Programming the EEPROM
EEPROM, the program data is latched into a page buffer. This allows one page of data to be
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
0x10
ADDR. LOW
DATA LOW
ADDR. HIGH
DATA HIGH
DATA LOW
ADDR. LOW
DATA HIGH
DATA
XA1 / BS2
XA0
PAGEL / BS1
XTAL1
WR
RDY / BSY
RESET +12V
OE
XXX
1
STEP
7
5
6
4
3
2
4
3
2
8
0x00
9