ATAVRSB202 Atmel, ATAVRSB202 Datasheet - Page 208

• 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

30. Memory Programming
30.1
8042B–AVR–06/10
Program And Data Memory Lock Bits
The ATmega16HVB/32HVB provides six Lock bits which can be left unprogrammed (“1”) or can
be programmed (“0”) to obtain the additional features listed in
be erased to “1” with the Chip Erase command.
Table 30-1.
Note:
Table 30-2.
Lock Bit Byte
BLB12
BLB11
BLB02
BLB01
LB2
LB1
Mode
BLB0
Mode
LB
1
2
3
1
2
3
4
Memory Lock Bits
1. “1” means unprogrammed, “0” means programmed
BLB02
LB2
Lock Bit Byte
Lock Bit Protection Modes
1
1
0
1
1
0
0
BLB01
LB1
1
0
0
1
0
0
1
(1)
Bit No
Protection Type
No memory lock features enabled.
Further programming of the Flash and EEPROM is disabled in
Parallel and Serial Programming mode. The Fuse bits are locked in
both Serial and Parallel Programming mode.
Further programming and verification of the Flash and EEPROM is
disabled in Parallel and Serial Programming mode. The Boot Lock
bits and Fuse bits are locked in both Serial and Parallel
Programming mode.
No restrictions for SPM or LPM accessing the Application section.
SPM is not allowed to write to the Application section.
SPM is not allowed to write to the Application section, and LPM
executing from the Boot Loader section is not allowed to read from
the Application section. If Interrupt Vectors are placed in the Boot
Loader section, interrupts are disabled while executing from the
Application section.
LPM executing from the Boot Loader section is not allowed to read
from the Application section. If Interrupt Vectors are placed in the
Boot Loader section, interrupts are disabled while executing from
the Application section.
7
6
5
4
3
2
1
0
(1)(2)
Description
–
–
Boot Lock bit
Boot Lock bit
Boot Lock bit
Boot Lock bit
Lock bit
Lock bit
(1)
ATmega16HVB/32HVB
Table
30-2. The Lock bits can only
Default Value
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
(1)
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