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ATmega169P датащи(PDF) 307 Page - ATMEL Corporation

номер детали ATmega169P
подробное описание детали  8-bit Microcontroller with 16K Bytes In-System Programmable Flash
PDF  393 Pages
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производитель  ATMEL [ATMEL Corporation]
домашняя страница  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATmega169P датащи(HTML) 307 Page - ATMEL Corporation

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307
8018N–AVR–08/09
ATmega169P
Figure 27-6. Mapping Between BS1, BS2 and the Fuse and Lock Bits During Read
27.7.13
Reading the Signature Bytes
The algorithm for reading the Signature bytes is as follows (refer to ”Programming the Flash” on
page 301 for details on Command and Address loading):
1.
A: Load Command “0000 1000”.
2.
B: Load Address Low Byte (0x00 - 0x02).
3.
Set OE to “0”, and BS to “0”. The selected Signature byte can now be read at DATA.
4.
Set OE to “1”.
27.7.14
Reading the Calibration Byte
The algorithm for reading the Calibration byte is as follows (refer to ”Programming the Flash” on
page 301 for details on Command and Address loading):
1.
A: Load Command “0000 1000”.
2.
B: Load Address Low Byte, 0x00.
3.
Set OE to “0”, and BS1 to “1”. The Calibration byte can now be read at DATA.
4.
Set OE to “1”.
27.7.15
Parallel Programming Characteristics
Figure 27-7. Parallel Programming Timing, Including some General Timing Requirements
Lock Bits
0
1
BS2
Fuse High Byte
0
1
BS1
DATA
Fuse Low Byte
0
1
BS2
Extended Fuse Byte
Data & Contol
(DATA, XA0/1, BS1, BS2)
XTAL1
t
XHXL
t
WLWH
t
DVXH
t
XLDX
t
PLWL
t
WLRH
WR
RDY/BSY
PAGEL
t
PHPL
t
PLBX
t
BVPH
t
XLWL
t
WLBX
t
BVWL
WLRL



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