ATAVRSB202 Atmel, ATAVRSB202 Datasheet - Page 210
ATAVRSB202
Manufacturer Part Number
ATAVRSB202
Description
KIT BATT MGMT FOR ATMEGA32HVB
Manufacturer
Atmel
Specifications of ATAVRSB202
Main Purpose
*
Embedded
*
Utilized Ic / Part
*
Primary Attributes
*
Secondary Attributes
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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30.2.2
30.2.3
30.3
8042B–AVR–06/10
Signature Bytes
Low Byte
Latching of Fuses
Table 30-4.
Notes:
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.
All Atmel microcontrollers have a three-byte signature code which identifies the device. This
code can be read in both Programming mode, also when the device is locked. The three bytes
reside in a separate address space. The signature bytes of ATmega16HVB/32HVB is given in
Table
Table 30-5.
Part
ATmega16HVB
ATmega32HVB
Bit No
7
6
5
4
3
2
1
0
30-5.
1. The Watchdog is enabled/disabling by writing to the Watchdog Timer Control and Status Reg-
2. The SUTx fuse bits are used to configure the startup time from sleep or reset. By default the
3. The default OSCSEL1:0 setting should not be changed. OSCSEL1:0="00" is reserved for test
Fuse Low Byte
WDTON
EESAVE
SPIEN
SUT2
SUT1
SUT0
OSCSEL1
OSCSEL0
ister (WDTCSR). But as a fail-safe, the WDTON fuse can be used to force the Watchdog to run
in System Reset mode.
longest startup time is selected.
purpose. Other values are reserved for future use.
Fuse Low Byte
Device ID
Watchdog Timer always on
EEPROM memory is preserved
through the Chip Erase
Enable Serial Programmable Data
Downloading
Select start-up time
Select start-up time
Select start-up time
Oscillator Select
Oscillator Select
Description
0x000
0x1E
0x1E
ATmega16HVB/32HVB
Signature Bytes Address
0x001
0x94
0x95
Default Value
1 (unprogrammed)
1 (unprogrammed, EEPROM
not preserved)
0 (programmed, SPI
programming enabled)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
0 (programmed)
1 (unprogrammed)
(3)
(1)
(2)
(2)
(2)
(3)
0x002
0x0D
0x10
210
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