Datasheet

AVR068

2591C-AVR-06/06

Table 5-61. Answer format

Field Size Values Description

Answer ID 1 byte CMD_PROGRAM_FLASH_HVSP Answer id

Status 1 byte

STATUS_CMD_OK or

STATUS_RDY_BSY_TOUT

A Result Value indicating the

result of the operation.

5.4.4.1 Mode byte description

• Bit 0: This bit indicates whether to use byte ‘0’ or page ‘1’ programming.

• Bit 1-3 are the pagesize bits, pagesize are given in bytes not words, see table

below:

Table 5-62. Pagesize bit configuration

Pagesize Bit 3, 2, 1

256 0 0 0

2 0 0 1

4 0 1 0

8 0 1 1

16 1 0 0

32 1 0 1

64 1 1 0

128 1 1 1

• Bit 4-5 are not in use.

• Bit 6 must be set to ‘1’ when it is the very last page to be programmed, otherwise

‘0’

• Bit 7 indicates if a page write should be issued (Transfer data to flash). Normally it

should always be set ‘1’. However, if the page size of the target device is too large

to be covered by one Program Flash command (because the amount of available

SRAM in STK500 is limited) this can be used to let 2 or more commands fill the

page buffer of the target device. The transfer data to flash flag should then only be

set on the last command.

Note: Only Bit 0-3 are set in the XML file, cause Bit 6-7 are not static and must be

controlled by the PC Frontend.

5.4.5 CMD_READ_FLASH_HVSP

This command will read data from the FLASH memory of the target device if it

succeeds. For devices with the FLASH organized in pages, the data address and size

used with this command must confirm to that of the device. I.e. one ReadFlash

command is used to read one page in the target device.

XML path: /AVRPART/ICE_SETTINGS/STK500_2/HvspReadFlash/

Table 5-63. Command format

Field Size Values Description

Command ID 1 byte CMD_READ_FLASH_HVSP Command id

NumBytes 2 byte XML: blockSize

Total number of bytes to read,

MSB first