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111
2535J–AVR–08/10
ATtiny13
Load EEPROM
Page Buffer
SDI
SII
SDO
0_00bb_bbbb_00
0_0000_1100_00
x_xxxx_xxxx_xx
0_eeee_eeee_00
0_0010_1100_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0110_1101_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0110_1100_00
x_xxxx_xxxx_xx
Repeat Instr. 1 - 4 until the entire
page buffer is filled or until all data
within the page is filled. See Note
2.
Program
EEPROM Page
SDI
SII
SDO
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. 2 until SDO goes
high. Repeat Instr. 1 - 2 for each
loaded EEPROM page until the
entire EEPROM or all data is
programmed.
Write EEPROM
Byte
SDI
SII
SDO
0_00bb_bbbb_00
0_0000_1100_00
x_xxxx_xxxx_xx
0_eeee_eeee_00
0_0010_1100_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0110_1101_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0110_0100_00
x_xxxx_xxxx_xx
Repeat Instr. 1 - 5 for each new
address. Wait after Instr. 5 until
SDO goes high. See Note 3.
SDI
SII
SDO
0_0000_0000_00
0_0110_1100_00
x_xxxx_xxxx_xx
Instr. 5
Load “Read
EEPROM”
Command
SDI
SII
SDO
0_0000_0011_00
0_0100_1100_00
x_xxxx_xxxx_xx
Enter EEPROM Read mode.
Read EEPROM
Byte
SDI
SII
SDO
0_bbbb_bbbb_00
0_0000_1100_00
x_xxxx_xxxx_xx
0_aaaa_aaaa_00
0_0001_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
q_qqqq_qqq0_00
Repeat Instr. 1, 3 - 4 for each new
address. Repeat Instr. 2 for a new
256 byte page.
Write Fuse Low
Bits
SDI
SII
SDO
0_0100_0000_00
0_0100_1100_00
x_xxxx_xxxx_xx
0_A987_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 after Instr. 4 until SDO goes
high. Write A - 3 = “0” to program
the Fuse bit.
Write Fuse High
Bits
SDI
SII
SDO
0_0100_0000_00
0_0100_1100_00
x_xxxx_xxxx_xx
0_000F_EDCB_00
0_0010_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
x_xxxx_xxxx_xx
Wait after Instr. 4 until SDO goes
high. Write F - B = “0” to program
the Fuse bit.
Write Lock Bits
SDI
SII
SDO
0_0010_0000_00
0_0100_1100_00
x_xxxx_xxxx_xx
0_0000_0021_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 SDO goes
high. Write 2 - 1 = “0” to program
the Lock Bit.
Read Fuse Low
Bits
SDI
SII
SDO
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
A_9876_543x_xx
Reading A - 3 = “0” means the
Fuse bit is programmed.
Read Fuse High
Bits
SDI
SII
SDO
0_0000_0100_00
0_0100_1100_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0111_1010_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0111_1110_00
x_xxFE_DCBx_xx
Reading F - B = “0” means the fuse
bit is programmed.
Read Lock Bits
SDI
SII
SDO
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_x21x_xx
Reading 2, 1 = “0” means the lock
bit is programmed.
Table 17-13. High-Voltage Serial Programming Instruction Set for ATtiny13 (Continued)
Instruction
Instruction Format
Operation Remarks
Instr.1/5
Instr.2/6
Instr.3
Instr.4
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