Rainbow Electronics ATtiny12 - Manual (Page 49)

49
ATtiny11/12
1006C–09/01
Note: 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 = CKSEL2 Fuse
9, 6 = RSTDISBL Fuse
7 = FSTRT Fuse
8 = CKSEL3 Fuse
A = SPIEN Fuse
B = BODEN Fuse
C = BODLEVEL Fuse
Read EEPROM
byte (ATtiny12)
PB0
PB1
PB2
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 for each new
address
Write Fuse bits
(ATtiny11)
PB0
PB1
PB2
0_0100_0000_00
0_0100_1100_00
x_xxxx_xxxx_xx
0_0007_6543_00
0_0010_1100_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0110_0100_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0110_1100_00
x_xxxx_xxxx_xx
Wait t
WLWH_PFB
after Instr.3 for the
Write fuse bits cycle to finish. Write
7 - 3 = “0” to program the fuse bit.
Write Fuse bits
(ATtiny12)
PB0
PB1
PB2
0_0100_0000_00
0_0100_1100_00
x_xxxx_xxxx_xx
0_CBA9_8543_00
0_0010_1100_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0110_0100_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0110_1100_00
x_xxxx_xxxx_xx
Wait after Instr.4 until PB2 goes
high. Write C - A, 9, 8, 5 - 3 = “0” to
program the fuse bit.
Write Lock bits
PB0
PB1
PB2
0_0010_0000_00
0_0100_1100_00
x_xxxx_xxxx_xx
0_0000_0210_00
0_0010_1100_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0110_0100_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0110_1100_00
0_0000_0000_00
Wait after Instr.4 until PB2 goes
high. Write 2, 1 = “0” to program the
lock bit.
Read Fuse bits
(ATtiny11)
PB0
PB1
PB2
0_0000_0100_00
0_0100_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
x_xx76_543x_xx
Reading 7 - 3 = “0” means the fuse
bit is programmed.
Read Fuse bits
(ATtiny12)
PB0
PB1
PB2
0_0000_0100_00
0_0100_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
C_BA98_543x_xx
Reading C - A, 9, 8, 5 - 3 = “0”
means the fuse bit is programmed.
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
(ATtiny12)
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 23. High-voltage Serial Programming Instruction Set for ATtiny11/12 (Continued)
Instruction
Instruction Format
Operation Remarks Instr.1 Instr.2 Instr.3 Instr.4