Atmel AVR ATtiny15L User Manual

58
ATtiny15L
1187H–AVR–09/07
Note: 1. a = address high bits
b = address low bits
i = data in
o = data out
x = don’t care
1 = Lock Bit1
2 = Lock Bit2
3 = CKSEL0 Fuse
4 = CKSEL1 Fuse
5 = RSTDSBL Fuse
6 = SPIEN Fuse
7 = BODEN Fuse
8 = BODLEVEL Fuse
The Lock bits can only be cleared by executing a Chip Erase.
Read Lock
Bits
PB0
PB1
PB2
0_0000_0100_00
0_0100_1100_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0111_1000_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0111_1100_00
x_xxxx_21xx_xx
Reading 2, 1 = “0” means the
Lock bit is programmed
Read
Signature
Bytes
PB0
PB1
PB2
0_0000_1000_00
0_0100_1100_00
x_xxxx_xxxx_xx
0_0000_00bb_00
0_0000_1100_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0110_1000_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0110_1100_00
o_oooo_ooox_xx
Repeat Instr.2 - Instr.4 for
each signature byte address
Read
Calibration
Byte
PB0
PB1
PB2
0_0000_1000_00
0_0100_1100_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0000_1100_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0111_1000_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0111_1100_00
o_oooo_ooox_xx
Table 25. High-voltage Serial Programming Instruction Set for ATtiny15L
(1)
(Continued)
Instruction
Instruction Format
Operation RemarksInstr.1 Instr.2 Instr.3 Instr.4

Atmel AVR ATtiny15L Specifications

General

Brand	Atmel
Model	AVR ATtiny15L
Category	Microcontrollers
Language	English