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ATmega16HVB Datasheet(PDF) 222 Page - ATMEL Corporation

Part # ATmega16HVB
Description  8-bit Microcontroller with 16K/32K Bytes In-System Programmable Flash
PDF  273 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATmega16HVB Datasheet(HTML) 222 Page - ATMEL Corporation

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222
8042A–AVR–07/09
ATmega16HVB/32HVB
Figure 30-6. Programming the EEPROM Waveforms
30.7.7
Reading the Flash
The algorithm for reading the Flash memory is as follows (refer to ”Programming the Flash” on
page 219 for details on Command and Address loading):
1.
A: Load Command “0000 0010”.
2.
G: Load Address High Byte (0x00 - 0xFF).
3.
B: Load Address Low Byte (0x00 - 0xFF).
4.
Set OE to “0”, and BS1 to “0”. The Flash word low byte can now be read at DATA.
5.
Set BS to “1”. The Flash word high byte can now be read at DATA.
6.
Set OE to “1”.
30.7.8
Reading the EEPROM
The algorithm for reading the EEPROM memory is as follows (refer to ”Programming the Flash”
on page 219 for details on Command and Address loading):
1.
A: Load Command “0000 0011”.
2.
G: Load Address High Byte (0x00 - 0xFF).
3.
B: Load Address Low Byte (0x00 - 0xFF).
4.
Set OE to “0”, and BS1 to “0”. The EEPROM Data byte can now be read at DATA.
5.
Set OE to “1”.
RDY/BSY
WR
OE
RESET +12V
PAGEL
BS2
0x11
ADDR. HIGH
DATA
ADDR. LOW
DATA
ADDR. LOW
DATA
XX
XA1
XA0
BS1
XTAL1
XX
AG
B
C
E
B
C
E
L
K



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