Rainbow-electronics ATmega103L Uživatelský manuál stáhnout pdf (Strana 104)

ATmega603/103

104

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

= Lock Bit 1

= Lock Bit 2

3 = SUT0 Fuse

4 = SUT1 Fuse

5 = SPIEN Fuse

6 = EESAVE Fuse

Table 45. Serial Programming Instruction Set

Instruction Instruction Format Operation

Byte 1 Byte 2 Byte 3 Byte 4

Programming Enable

1010 1100 0101 0011 xxxx xxxx xxxx xxxx Enable Serial Programming while

RESET

is 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 page memory at word

address b.

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 xxxx xxxx xxxx xxxx xxxx x

x Read Lock bits. ‘0’ = programmed,

‘1’ = unprogrammed.

Write Lock Bits

1010 1100 1111 1

1 xxxx xxxx xxxx xxxx Write Lock bits. Set bits

1,2

= ’0’ to

program Lock bits.

Read Fuse Bits

0101 0000 xxxx xxxx xxxx xxxx xx5x 6143 Read Fuse bits. ‘0’ = programmed,

‘1’ = unprogrammed.

Write Fuse Bits

1010 1100 1011 6143 xxxx xxxx xxxx xxxx Write Fuse bits. Set bit 6,4

= ’0’

to program, ‘1’ to unprogram.

Read Signature Byte

0011 0000 xxxx xxxx xxxx xxbb oooo oooo Read Signature Byte o at address

1 2 ... 99 100 101 102 103 104 105 106 107 108 109 ... 125 126

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