ATMEGA64L-8MI View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

ATMEGA64L-8MI

8-bit AVR® Microcontroller with 64K Bytes In-System Programmable Flash

Atmel Corporation 

Table 130. SPI Serial Programming Instruction Set

Instruction Format

Instruction

Byte 1

Byte 2

Byte 3

Programming Enable

1010 1100 0101 0011 xxxx xxxx

Chip Erase

Read Program Memory

1010 1100

0010 H000

100x xxxx

xaaa aaaa

xxxx xxxx

bbbb bbbb

Load Program Memory

Page

0100 H000 xxxx xxxx xbbb bbbb

Write Program Memory

Page

Read EEPROM Memory

Write EEPROM Memory

Read Lock Bits

0100 1100 xaaa aaaa bxxx xxxx

1010 0000 xxxx xaaa bbbb bbbb

1100 0000 xxxx xaaa bbbb bbbb

0101 1000 0000 0000 xxxx xxxx

Write Lock Bits

1010 1100 111x xxxx xxxx xxxx

Read Signature Byte

Write Fuse Bits

0011 0000 xxxx xxxx xxxx xxbb

1010 1100 1010 0000 xxxx xxxx

Write Fuse High Bits

1010 1100 1010 1000 xxxx xxxx

Write Extended Fuse Bits 1010 1100 1010 0100 xxxx xxxx

Read Fuse Bits

0101 0000 0000 0000 xxxx xxxx

Byte4

xxxx xxxx

xxxx xxxx

oooo oooo

iiii iiii

xxxx xxxx

oooo oooo

iiii iiii

xxoo oooo

11ii iiii

oooo oooo

iiii iiii

iiii iiii

xxxx xxii

oooo oooo

Operation

Enable SPI Serial Programming

after RESET goes low.

Chip Erase EEPROM and Flash.

Read H (high or low) data o from

Program memory at word address

a:b.

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 at

address a:b.

Read data o from EEPROM

memory at address a:b.

Write data i to EEPROM memory

at address a:b.

Read Lock bits. “0” = programmed,

“1” = unprogrammed. See Table

116 on page 290 for details.

Write Lock bits. Set bits = “0” to

program Lock bits. See Table 116

on page 290 for details.

Read Signature Byte o at address

b.

Set bits = “0” to program, “1” to

unprogram. See Table 120 on page

292 for details.

Set bits = “0” to program, “1” to

unprogram. See Table 119 on page

292 for details.

Set bits = “0” to program, “1” to

unprogram. See Table 120 on page

292 for details.

Read Fuse bits. “0” = programmed,

“1” = unprogrammed. See Table

120 on page 292 for details.

310 ATmega64(L)

2490G–AVR–03/04

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