Rainbow Electronics ATtiny2313 - Manual (Page 167)

167
ATtiny2313
2543A–AVR–08/03
I. Repeat B through H until the entire Flash is programmed or until all data has been
programmed.
J. 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 sig-
nals are reset.
Figure 69. Addressing the Flash Which is Organized in Pages (1)
Note: 1. PCPAGE and PCWORD are listed in Table 74 on page 164.
Figure 70. Programming the Flash Waveforms (1)
Note: 1. “XX” is don’t care. The letters refer to the programming description above.
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
RDY/BSY
WR
OE
RESET +12V
PAGEL
BS2
0x10 ADDR. LOW ADDR. HIGH
DATA
DATA LOW DATA HIGH ADDR. LOW DATA LOW DATA HIGH
XA1
XA0
BS1
XTAL1
XX XX XX
A B C D E B C D E G H
F