Rainbow Electronics ATmega32L - Manual (Page 271)

271
ATmega32(L)
2503C–AVR–10/02
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 116. SPI Serial Programming Instruction Set
Instruction
Instruction Format
Operation Byte 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 00aa 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 00xx xxxx xxbb 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 00aa aaaa bb xx xxxx xxxx xxxx Write Program Memory Page at
address a:b.
Read EEPROM Memory
1010 0000 00xx xxaa bbbb bbbb oooo oooo Read data o from EEPROM memory at
address a:b.
Write EEPROM Memory
1100 0000 00xx xxaa 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 103 on
page 254 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 103 on
page 254 for details.
Read Signature Byte 0011 0000 00xx 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 106 on page
256 for details.
Write Fuse High Bits
1010 1100 1010 1000 xxxx xxxx iiii iiii Set bits = “0” to program, “1” to
unprogram. See
Table 105 on page
255 for details.
Read Fuse Bits
0101 0000 0000 0000 xxxx xxxx oooo oooo Read Fuse bits. “0” = programmed, “1”
= unprogrammed. See
Table 106 on
page 256 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 105 on page 255 for details.
Read Calibration Byte 0011 1000 00xx xxxx 0000 0000 oooo oooo Read Calibration Byte