AT90PWM2B-16SE ATMEL [ATMEL Corporation], AT90PWM2B-16SE Datasheet - Page 287

• Manufacturer Part Number: AT90PWM2B-16SE
• Description: 8-bit Microcontroller with 8K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

4317J–AVR–08/10
1. Give WR a negative pulse. This starts programming of the entire page of data. RDY/BSY
2. Wait until RDY/BSY goes high (See
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 signals are
Figure 25-2. Addressing the Flash Which is Organized in Pages
Note:
Figure 25-3. Programming the Flash Waveforms
Note:
goes low.
reset.
RESET +12V
RDY/BSY
PAGEL
1. PCPAGE and PCWORD are listed in
XTAL1
1. “XX” is don’t care. The letters refer to the programming description above.
DATA
XA1
XA0
BS1
BS2
WR
OE
PROGRAM MEMORY
PROGRAM
COUNTER
0x10
PAGE
A
PAGE ADDRESS
WITHIN THE FLASH
ADDR. LOW
B
PCMSB
DATA LOW
C
PCPAGE
DATA HIGH
D
XX
E
Figure 25-3
PAGEMSB
ADDR. LOW
PCWORD
B
Table 25-11 on page
WORD ADDRESS
WITHIN A PAGE
DATA LOW
(1)
C
for signal waveforms).
F
DATA HIGH
INSTRUCTION WORD
D
AT90PWM2/3/2B/3B
PAGE
XX
E
284.
(1)
ADDR. HIGH
G
H
PCWORD[PAGEMSB:0]:
XX
00
01
02
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