參數(shù)資料
型號: S80C32-44:RD
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, 44 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 94/152頁
文件大?。?/td> 2528K
298
8021G–AVR–03/11
ATmega329P/3290P
Notes:
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 26-6 on page 292
for details.
4. Never ship a product with the OCDEN Fuse programmed regardless of the setting of 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.
5. If the JTAG interface is left unconnected, the JTAGEN fuse should if possible be disabled. This
to avoid static current at the TDO pin in the JTAG interface.
Notes:
1. The default value of SUT1...0 results in maximum start-up time for the default clock source.
2. The default setting of CKSEL3...0 results in internal RC Oscillator @ 8MHz. See Table 8-7 on
page 31 for details.
3. The CKOUT Fuse allow the system clock to be output on PORTE7. See ”Clock Output Buffer”
on page 33 for details.
The status of the Fuse bits is not affected by Chip Erase. Note that the Fuse bits are locked if
Lock bit1 (LB1) is programmed. Program the Fuse bits before programming the Lock bits.
Table 27-4.
Fuse High Byte
Fuse High Byte
Bit No
Description
Default Value
7
Enable OCD
1 (unprogrammed, OCD
disabled)
JTAGEN(5)
6
Enable JTAG
0 (programmed, JTAG
enabled)
SPIEN(1)
5
Enable Serial Program and Data
Downloading
0 (programmed, SPI
prog. enabled)
WDTON(3)
4
Watchdog Timer always on
1 (unprogrammed)
EESAVE
3
EEPROM memory is preserved
through the Chip Erase
1 (unprogrammed,
EEPROM not preserved)
BOOTSZ1
2
Select Boot Size (see Table 27-9 on
page 300 for details)
0 (programmed)(2)
BOOTSZ0
1
Select Boot Size (see Table 27-9 on
page 300 for details)
0 (programmed)(2)
BOOTRST
0
Select Reset Vector
1 (unprogrammed)
Table 27-5.
Fuse Low Byte
Fuse Low Byte
Bit No
Description
Default Value
7
Divide clock by 8
0 (programmed)
6
Clock output
1 (unprogrammed)
SUT1
5
Select start-up time
1 (unprogrammed)(1)
SUT0
4
Select start-up time
0 (programmed)(1)
CKSEL3
3
Select Clock source
0 (programmed)(2)
CKSEL2
2
Select Clock source
0 (programmed)(2)
CKSEL1
1
Select Clock source
1 (unprogrammed)(2)
CKSEL0
0
Select Clock source
0 (programmed)(2)
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