ATA5771 ATMEL Corporation, ATA5771 Datasheet - Page 222

• Manufacturer Part Number: ATA5771
• Manufacturer: ATMEL Corporation

19.7.5
170
ATtiny24/44/84
Programming the EEPROM
When writing or reading serial data to the ATtiny24/44/84, data is clocked on the rising edge of
the serial clock, see
page 185
Figure 19-4. Addressing the Flash which is Organized in Pages
Figure 19-5. High-voltage Serial Programming Waveforms
The EEPROM is organized in pages, see
EEPROM, the data is latched into a page buffer. This allows one page of data to be pro-
SDO
PB0
PB1
PB2
PB3
1. Load Command “Write Flash” (see
2. Load Flash Page Buffer.
3. Load Flash High Address and Program Page. Wait after Instr. 3 until SDO goes high for
4. Repeat 2 through 3 until the entire Flash is programmed or until all data has been
5. End Page Programming by Loading Command “No Operation”.
SDI
SCI
SII
the “Page Programming” cycle to finish.
programmed.
PROGRAM MEMORY
for details.
PROGRAM
COUNTER
PAGE
0
MSB
PAGE ADDRESS
WITHIN THE FLASH
MSB
MSB
1
PCMSB
Figure 20-6 on page
2
PCPAGE
3
4
Table 19-16 on page
PAGEMSB
185,
PCWORD
Table 20-11 on page
5
WORD ADDRESS
WITHIN A PAGE
Figure 19-3 on page 167
6
INSTRUCTION WORD
7
PAGE
LSB
172).
LSB
LSB
8
184. When programming the
9
and
PCWORD[PAGEMSB:0]:
00
01
02
PAGEEND
10
Table 20-12 on
8006G–AVR–01/08