Atmel ATmega128 User Manual

304
2467S–AVR–07/09
ATmega128
Note: a = address high bits
b = address low bits
H = 0 - Low byte, 1 - High Byte
o = data out
i = data in
x = don’t care
Table 129. SPI Serial Programming Instruction Set
Instruction
Instruction Format
OperationByte 1 Byte 2 Byte 3 Byte4
Programming Enable 1010 1100 0101 0011 xxxx xxxx xxxx xxxx Enable SPI Serial Programming after RESET
goes low.
Chip Erase 1010 1100 100x xxxx xxxx xxxx xxxx xxxx Chip Erase EEPROM and Flash.
Read Program
Memory
0010 H000 aaaa aaaa bbbb bbbb oooo oooo Read H (high or low) data o from Program
memory at word address a:b.
Load Program
Memory Page
0100 H000 xxxx xxxx xbbb bbbb iiii iiii Write H (high or low) data i to Program
Memory page at word address b. Data low
byte must be loaded before data high byte is
applied within the same address.
Write Program
Memory Page
0100 1100 aaaa aaaa bxxx xxxx xxxx xxxx
Write Program Memory Page at address a:b.
Read EEPROM
Memory
1010 0000 xxxx aaaa bbbb bbbb oooo oooo Read data o from EEPROM memory at
address a:b.
Write EEPROM
Memory
1100 0000 xxxx aaaa bbbb bbbb iiii iiii Write data i to EEPROM memory at address
a:b.
Read Lock bits 0101 1000 0000 0000 xxxx xxxx xxoo oooo Read Lock bits. “0” = programmed, “1” =
unprogrammed. See
Table 115 on page
286
for details.
Write Lock bits 1010 1100 111x xxxx xxxx xxxx 11ii iiii Write Lock bits. Set bits = “0” to program Lock
bits. See
Table 115 on page 286 for details.
Read Signature Byte 0011 0000 xxxx xxxx xxxx xxbb oooo oooo Read Signature Byte o at address b.
Write Fuse bits 1010 1100 1010 0000 xxxx xxxx iiii iiii Set bits = “0” to program, “1” to unprogram.
See
Table 119 on page 288 for details.
Write Fuse High Bits 1010 1100 1010 1000 xxxx xxxx iiii iiii Set bits = “0” to program, “1” to unprogram.
See
Table 118 on page 288 for details.
Write Extended Fuse
bits
1010 1100 1010 0100 xxxx xxxx xxxx xxii Set bits = “0” to program, “1” to unprogram.
See
Table 119 on page 288 for details.
Read Fuse bits 0101 0000 0000 0000 xxxx xxxx oooo oooo Read Fuse bits. “0” = programmed, “1” =
unprogrammed. See
Table 119 on page
288 for details.
Read Extendend
Fuse bits
0101 0000 0000 1000 xxxx xxxx oooo oooo Read Extended Fuse bits. “0” = pro-grammed,
“1” = unprogrammed. See
Table 119 on
page 288
for details.
Read Fuse High Bits 0101 1000 0000 1000 xxxx xxxx oooo oooo Read Fuse high bits. “0” = pro-grammed, “1” =
unprogrammed. See
Table 118 on page
288
for details.
Read Calibration Byte 0011 1000 xxxx xxxx 0000 00bb oooo oooo Read Calibration Byte o at address b.

Atmel ATmega128 Specifications

General

Brand	Atmel
Model	ATmega128
Category	Microcontrollers
Language	English