AT90CAN128-16AE ATMEL Corporation, AT90CAN128-16AE Datasheet - Page 325

• Manufacturer Part Number: AT90CAN128-16AE
• Description: 8-bit Avr Microcontroller With 128K Bytes of Isp Flash And CAN Controller.flash (Kbytes) 128 Vcc (V) 2.7-5.5 EEPROM (Kbytes) 4 SRAM (bytes) 4K CAN (mess. Obj.) 15
• Manufacturer: ATMEL Corporation

Latching of Fuses
4250C–CAN–03/04
Table 124. Fuse High Byte (Continued)
Note:
Table 125. Fuse Low Byte
Note:
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.
The fuse values are latched when the device enters programming mode and changes of
the fuse values will have no effect until the part leaves Programming mode. This does
not apply to the EESAVE Fuse which will take effect once it is programmed. The fuses
are also latched on Power-up in Normal mode.
Fuse High
Byte
BOOTSZ1
BOOTSZ0
BOOTRST
Fuse Low
Byte
CKDIV8
CKOUT
SUT1
SUT0
CKSEL3
CKSEL2
CKSEL1
CKSEL0
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 118 on
3. See “Watchdog Timer Control Register – WDTCR” on page 55 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 Port PC7. See “Clock Out-
4. See “System Clock Prescaler” on page 42 for details.
(3)
(4)
page 321 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 12 on page 39 for details.
Table 5 on page 36 for details.
put Buffer” on page 41 for details.
Bit
No
Bit
No
2
1
0
7
6
5
4
3
2
1
0
Description
Select Boot Size
(see Table 118 for details)
Select Boot Size
(see Table 118 for details)
Select Reset Vector
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
0 (programmed)
0 (programmed)
1 (unprogrammed)
Default Value
0 (programmed)
1 (unprogrammed)
1 (unprogrammed)
0 (programmed)
0 (programmed)
0 (programmed)
1 (unprogrammed)
0 (programmed)
AT90CAN128
(2)
(2)
(1)
(2)
(2)
(2)
(1)
(2)
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