ATMEGA169 ATMEL [ATMEL Corporation], ATMEGA169 Datasheet - Page 268
ATMEGA169
Manufacturer Part Number
ATMEGA169
Description
8-bit Microcontroller with 16K Bytes In-System Programmable Flash
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.ATMEGA169.pdf
(365 pages)
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ATmega169/V
Table 119. Fuse High Byte
Note:
Table 120. Fuse Low Byte
Note:
Fuse High
Byte
OCDEN
JTAGEN
SPIEN
WDTON
EESAVE
BOOTSZ1
BOOTSZ0
BOOTRST
Fuse Low Byte
CKDIV8
CKOUT
SUT1
SUT0
CKSEL3
CKSEL2
CKSEL1
CKSEL0
(1)
1. The SPIEN Fuse is not accessible in serial programming mode.
2. The default value of BOOTSZ1..0 results in maximum Boot Size. See Table 113 on
3. See “Watchdog Timer Control Register – WDTCR” on page 43 for details.
4. Never ship a product with the OCDEN Fuse programmed regardless of the setting of
5. If the JTAG interface is left unconnected, the JTAGEN fuse should if possible be dis-
1. The default value of SUT1..0 results in maximum start-up time for the default clock
2. The default setting of CKSEL3..0 results in internal RC Oscillator @ 8 MHz. See
3. The CKOUT Fuse allow the system clock to be output on PORTE7. See “Clock Out-
4. See “System Clock Prescaler” on page 29 for details.
(3)
(4)
(4)
(3)
(5)
page 264 for details.
Lock bits and JTAGEN Fuse. A programmed OCDEN Fuse enables some parts of the
clock system to be running in all sleep modes. This may increase the power
consumption.
abled. This to avoid static current at the TDO pin in the JTAG interface.
source. See Table 16 on page 38 for details.
Table 6 on page 26 for details.
put Buffer” on page 29 for details.
Bit
No
7
6
5
4
3
2
1
0
Description
Enable OCD
Enable JTAG
Enable Serial Program and Data
Downloading
Watchdog Timer always on
EEPROM memory is preserved
through the Chip Erase
Select Boot Size (see Table 113 for
details)
Select Boot Size (see Table 113 for
details)
Select Reset Vector
Bit No
7
6
5
4
3
2
1
0
Description
Divide clock by 8
Clock output
Select start-up time
Select start-up time
Select Clock source
Select Clock source
Select Clock source
Select Clock source
Default Value
1 (unprogrammed, OCD
disabled)
0 (programmed, JTAG
enabled)
0 (programmed, SPI prog.
enabled)
1 (unprogrammed)
1 (unprogrammed, EEPROM
not preserved)
0 (programmed)
0 (programmed)
1 (unprogrammed)
Default Value
0 (programmed)
1 (unprogrammed)
1 (unprogrammed)
0 (programmed)
0 (programmed)
0 (programmed)
1 (unprogrammed)
0 (programmed)
(2)
(2)
2514P–AVR–07/06
(1)
(2)
(2)
(2)
(1)
(2)
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