attiny25v ATMEL Corporation, attiny25v Datasheet - Page 164

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attiny25v

Manufacturer Part Number
attiny25v
Description
Microcontroller With 2/4/8k Bytes In-system Programmable Flash
Manufacturer
ATMEL Corporation
Datasheet

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Table 20-16. High-voltage Serial Programming Instruction Set for ATtiny25/45/85 (Continued)
164
Instruction
Write
EEPROM
Byte
Load “Read
EEPROM”
Command
Read
EEPROM
Byte
Write Fuse
Low Bits
Write Fuse
High Bits
Write Fuse
Extended Bits
Write Lock
Bits
Read Fuse
Low Bits
Read Fuse
High Bits
Read Fuse
Extended Bits
Read Lock
Bits
ATtiny25/45/85
SDI
SII
SDO
SDI
SII
SDO
SDI
SII
SDO
SDI
SII
SDO
SDI
SII
SDO
SDI
SII
SDO
SDI
SII
SDO
SDI
SII
SDO
SDI
SII
SDO
SDI
SII
SDO
SDI
SII
SDO
SDI
SII
SDO
0_bbbb_bbbb_00
0_bbbb_bbbb_00
0_0000_1100_00
0_0000_0000_00
0_0110_0100_00
0_0000_0011_00
0_0100_1100_00
0_0000_1100_00
0_0100_0000_00
0_0100_1100_00
0_0100_0000_00
0_0100_1100_00
0_0100_0000_00
0_0100_1100_00
0_0010_0000_00
0_0100_1100_00
0_0000_0100_00
0_0100_1100_00
0_0000_0100_00
0_0100_1100_00
0_0000_0100_00
0_0100_1100_00
0_0000_0100_00
0_0100_1100_00
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
Instr.1/5
0_000F_EDCB_00
0_A987_6543_00
0_aaaa_aaaa_00
0_0001_1100_00
0_0000_0000_00
0_0110_1100_00
0_aaaa_aaaa_00
0_0001_1100_00
0_0010_1100_00
0_0010_1100_00
0_0000_000J_00
0_0010_1100_00
0_0000_0021_00
0_0010_1100_00
0_0000_0000_00
0_0110_1000_00
0_0000_0000_00
0_0111_1010_00
0_0000_0000_00
0_0110_1010_00
0_0000_0000_00
0_0111_1000_00
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
Instr.2/6
Instruction Format
x_xxFE_DCBx_xx
0_eeee_eeee_00
0_0010_1100_00
0_0000_0000_00
0_0110_1000_00
0_0000_0000_00
0_0110_0100_00
0_0000_0000_00
0_0111_0100_00
0_0000_0000_00
0_0110_0110_00
0_0000_0000_00
0_0110_0100_00
0_0000_0000_00
0_0110_1100_00
A_9876_543x_xx
0_0000_0000_00
0_0111_1110_00
0_0000_0000_00
0_0110_1110_00
0_0000_0000_00
0_0111_1100_00
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxJx_xx
x_xxxx_x21x_xx
Instr.3
q_qqqq_qqq0_00
0_0000_0000_00
0_0110_1101_00
0_0000_0000_00
0_0110_1100_00
0_0000_0000_00
0_0110_1100_00
0_0000_0000_00
0_0111_1100_00
0_0000_0000_00
0_0110_1110_00
0_0000_0000_00
0_0110_1100_00
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
Instr.4
Operation Remarks
Repeat Instr. 1 - 6 for each
new address. Wait after Instr.
6 until SDO goes high. See
Note 3.
Instr. 6
Enter EEPROM Read mode.
Repeat Instr. 1, 3 - 4 for each
new address. Repeat Instr. 2
for a new 256 byte page.
Wait after Instr. 4 until SDO
goes high. Write A - 3 = “0” to
program the Fuse bit.
Wait after Instr. 4 until SDO
goes high. Write F - B = “0” to
program the Fuse bit.
Wait after Instr. 4 until SDO
goes high. Write J = “0” to
program the Fuse bit.
Wait after Instr. 4 until SDO
goes high. Write 2 - 1 = “0” to
program the Lock bit.
Reading A - 3 = “0” means
the Fuse bit is programmed.
Reading F - B = “0” means
the Fuse bit is programmed.
Reading J = “0” means the
Fuse bit is programmed.
Reading 2, 1 = “0” means the
Lock bit is programmed.
2586K–AVR–01/08

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