Rainbow Electronics ATtiny12 - Manual (Page 48)

48
ATtiny11/12
1006C–09/01
Figure 28. High-voltage Serial Programming Waveforms
MSB
MSB
MSB LSB
LSB
LSB
0 1 2 3 4 5 6 7 8 9 10
SERIAL DATA INPUT
PB0
SERIAL INSTR. INPUT
PB1
SERIAL DATA OUTPUT
PB2
SERIAL CLOCK INPUT
XTAL1/PB3
Table 23. High-voltage Serial Programming Instruction Set for ATtiny11/12
Instruction
Instruction Format
Operation Remarks Instr.1 Instr.2 Instr.3 Instr.4
Chip Erase
PB0
PB1
PB2
0_1000_0000_00
0_0100_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
0_0000_0000_00
0_0100_1100_00
x_xxxx_xxxx_xx
Wait after Instr.4 until PB2 goes
high for the Chip Erase cycle to
finish.
Write Flash
High and Low
Address PB0
PB1
PB2
0_0001_0000_00
0_0100_1100_00
x_xxxx_xxxx_xx
0_0000_000a_00
0_0001_1100_00
x_xxxx_xxxx_xx
0_bbbb_bbbb_00
0_0000_1100_00
x_xxxx_xxxx_xx
Repeat Instr.2 for a new 256 byte
page. Repeat Instr.3 for each new
address.
Write Flash Low
byte
PB0
PB1
PB2
0_ i i i i_i i i i _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.3 until PB2 goes
high. Repeat Instr.1, Instr. 2 and
Instr.3 for each new address.
Write Flash
High byte
PB0
PB1
PB2
0_ i i i i_i i i i _00
0_0011_1100_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0111_0100_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0111_1100_00
0_0000_0000_00
Wait after Instr.3 until PB2 goes
high. Repeat Instr.1, Instr. 2 and
Instr.3 for each new address.
Read Flash
High and Low
Address PB0
PB1
PB2
0_0000_0010_00
0_0100_1100_00
x_xxxx_xxxx_xx
0_0000_000a_00
0_0001_1100_00
x_xxxx_xxxx_xx
0_bbbb_bbbb_00
0_0000_1100_00
x_xxxx_xxxx_xx
Repeat Instr.2 and Instr.3 for each
new address.
Read Flash
Low byte
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.1 and Instr.2 for each
new address.
Read Flash
High byte
PB0
PB1
PB2
0_0000_0000_00
0_0111_1000_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0111_1100_00
o_oooo_ooox_xx
Repeat Instr.1 and Instr.2 for each
new address.
Write EEPROM
Low Address
(ATtiny12) PB0
PB1
PB2
0_0001_0001_00
0_0100_1100_00
x_xxxx_xxxx_xx
0_00bb_bbbb_00
0_0000_1100_00
x_xxxx_xxxx_xx
Repeat Instr.2 for each new
address.
Write EEPROM
byte (ATtiny12)
PB0
PB1
PB2
0_ i i i i_i i i i _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.3 until PB2 goes
high
Read EEPROM
Low Address
(ATtiny12) PB0
PB1
PB2
0_0000_0011_00
0_0100_1100_00
x_xxxx_xxxx_xx
0_00bb_bbbb_00
0_0000_1100_00
x_xxxx_xxxx_xx
Repeat Instr.2 for each new
address.