8

AVR069

8015B-AVR-02/06

Field

Size

Value

Description

cmd2

1 byte

Command 2 (Write Program

Memory Page)

cmd3

1 byte

Command 3 (Read Program

Memory)

poll1

1 byte

XML: pollVal1

Poll Value #1

poll2

1 byte

XML: pollVal2

Poll Value #2 (not used for flash

programming)

Data

N bytes

N data

*Mode byte

The mode parameter is essential for how this command works. The bits in the mode

byte have the following meanings:

Bit #

Description

Mode

0

Word/Page Mode (0 = word, 1 = page)

1

Timed delay

2

Value polling

3

RDY/BSY polling

Word Mode

4

Timed delay

5

Value polling

6

RDY/BSY polling

7

Write page

Page Mode

The Word/Page Mode bit selects if the device supports page programming or not.

The command bytes are different for word and page mode. In word mode, the ISP

commands Write Program Memory and Read Program Memory are used. In page

mode, Load Page, Write Program Memory Page and Read Program Memory are

used. The read instruction is used if Value Polling is specified in the mode bit. The

Low/High byte selection bit (3

rd

bit in the Load Page, Write Program Memory

commands) is handled by AVRISP mkII, so leave this bit cleared.

According to the mode, different termination methods are selected – Timed delay,

Value polling or RDY/BSY polling.

For paged operation, the Write page bit decides if a Write Program Memory Page

command should be issued after the data has been loaded into the page buffer. For

devices with page size bigger than what can be transferred to AVRISP mkII in one

command, several CMD_PROGRAM_FLASH_ISP commands must be issued. In

such a case, only the last command should have the Write Page mode bit set.

NOTE: Only bit 0-6 are set in the XML file, because bit 7 is not constant and must be controlled

by the PC software.

When value polling is used to determine when a programming operation is complete,

poll1 must be supplied. This value indicates which value will be read from the device

until the programmed value is read. This indicates end of programming. poll2 is used

only for EEPROM programming.