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ManualsBrandsMICROCHIP TECHNOLOGY ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller TSSOP 28 8-Bit 4 MHz I/O number 7
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154
8024A–AVR–04/08
ATmega8HVA/16HVA
27.6.2 Serial Programming Instruction set
Table 27-10 on page 154 and Figure 27-2 on page 155 describes the Instruction set.
Notes: 1. Not all instructions are applicable for all parts.
2. a = address
3. Bits are programmed ‘0’, unprogrammed ‘1’.
4. To ensure future compatibility, unused Fuses and Lock bits should be unprogrammed (‘1’) .
5. Refer to the correspondig section for Fuse and Lock bits, Calibration and Signature bytes and Page size.
6. Instructions accessing program memory use word address. This address may be random within the page range.
7. See htt://www.atmel.com/avr for Application Notes regarding programming and programmers.
Table 27-10. Serial Programming Instruction Set
Instruction/Operation
Instruction Format
Byte 1 Byte 2 Byte 3 Byte4
Programming Enable $AC $53 $00 $00
Chip Erase (Program Memory/EEPROM) $AC $80 $00 $00
Poll RDY/BSY
$F0 $00 $00 data byte out
Load Instructions
Load Extended Address byte
(1)
$4D $00 Extended adr $00
Load Program Memory Page, High byte $48 adr MSB adr LSB high data byte in
Load Program Memory Page, Low byte $40 adr MSB adr LSB low data byte in
Load EEPROM Memory Page (page access) $C1 adr MSB adr LSB data byte in
Read Instructions
Read Program Memory, High byte $28 adr MSB adr LSB high data byte out
Read Program Memory, Low byte $20 adr MSB adr LSB low data byte out
Read EEPROM Memory $A0 adr MSB adr LSB data byte out
Read Lock bits $58 $00 $00 data byte out
Read Signature Byte $30 $00 adr LSB data byte out
Read Fuse bits $50 $00 $00 data byte out
Read Fuse High bits $58 $08 $00 data byte out
Read Extended Fuse Bits $50 $08 $00 data byte out
Read Calibration Byte $38 $00 $00 data byte out
Write Instructions
(6)
Write Program Memory Page $4C adr MSB adr LSB $00
Write EEPROM Memory $C0 adr MSB adr LSB data byte in
Write EEPROM Memory Page (page access) $C2 adr MSB adr LSB $00
Write Lock bits $AC $E0 $00 data byte in
Write Fuse bits $AC $A0 $00 data byte in
Write Fuse High bits $AC $A8 $00 data byte in
Write Extended Fuse Bits $AC $A4 $00 data byte in