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ATmega32HVB датащи(PDF) 221 Page - ATMEL Corporation

номер детали ATmega32HVB
подробное описание детали  8-bit Microcontroller with 16K/32K Bytes In-System Programmable Flash
PDF  273 Pages
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производитель  ATMEL [ATMEL Corporation]
домашняя страница  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATmega32HVB датащи(HTML) 221 Page - ATMEL Corporation

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221
8042A–AVR–07/09
ATmega16HVB/32HVB
Figure 30-5. Programming the Flash Waveforms
(1)
Note:
1. “XX” is don’t care. The letters refer to the programming description above.
30.7.6
Programming the EEPROM
The EEPROM is organized in pages, see Table 30-8 on page 211. 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 219 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).
K: Repeat 3 through 5 until the entire buffer is filled.
L: Program EEPROM page
1.
Set BS to “0”.
2.
Give WR a negative pulse. This starts programming of the EEPROM page. RDY/BSY
goes low.
3.
Wait until to RDY/BSY goes high before programming the next page (See Figure 30-6 for
signal waveforms).
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
AB
CD
E
B
C
D
E
G
H
F



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