ATA6602 ATMEL Corporation, ATA6602 Datasheet - Page 297

• Manufacturer Part Number: ATA6602
• Description: LIN and Microcontroller System-In-Package: LIN Transceiver, integrated 5V/50 mA voltage regulator, window watchdog and automotive AVR ATmega88 (8 kBytes Flash); green QFN48 package.
• Manufacturer: ATMEL Corporation

4.24
4.24.1
4921C–AUTO–01/07
Memory Programming
Program And Data Memory Lock Bits
The ATA6602/ATA6603 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. The SPM instruction is enabled for the whole
Flash if the SELFPRGEN fuse is programmed (“0”), otherwise it is disabled.
Table 4-113. Lock Bit Byte
Notes:
Table 4-114. Lock Bit Protection Modes
Notes:
BLB12
BLB11
BLB02
BLB01
LB2
LB1
LB Mode
Lock Bit Byte
(2)
(2)
(2)
(2)
1
2
3
1. “1” means unprogrammed, “0” means programmed
2. Only on
1. Program the Fuse bits and Boot Lock bits before programming the LB1 and LB2.
2. “1” means unprogrammed, “0” means programmed
Memory Lock Bits
LB2
ATA6602/ATA6603
1
1
0
(1)
LB1
1
0
0
Bit No
7
6
5
4
3
2
1
0
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.
(1)(2)
Description
–
–
Boot Lock bit
Boot Lock bit
Boot Lock bit
Boot Lock bit
Lock bit
Lock bit
(1)
Table
ATA6602/ATA6603
Default Value
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
4-114. The Lock bits can only
(1)
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