ATTIny2313-16MI ATMEL Corporation, ATTIny2313-16MI Datasheet - Page 159

• Manufacturer Part Number: ATTIny2313-16MI
• Description: 8-bit AVR Microcontroller with 2K Bytes In-System Programmable Flash
• Manufacturer: ATMEL Corporation

Memory
Programming
Program And Data
Memory Lock Bits
2543C–AVR–12/03
The ATtiny2313 provides two Lock bits which can be left unprogrammed (“1”) or can be
programmed (“0”) to obtain the additional features listed in Table 66. The Lock bits can
only be erased to “1” with the Chip Erase command.
Table 65. Lock Bit Byte
Note:
Table 66. Lock Bit Protection Modes
Notes:
LB2
LB1
LB Mode
Lock Bit Byte
1
2
3
Memory Lock Bits
1. “1” means unprogrammed, “0” means programmed
1. Program the Fuse bits and Boot Lock bits before programming the LB1 and LB2.
2. “1” means unprogrammed, “0” means programmed
LB2
1
1
0
(1)
LB1
Bit No
1
0
0
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
–
–
–
–
–
–
Lock bit
Lock bit
(1)
Default Value
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
ATtiny2313/V
(1)
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