ATmega162 datasheet(261/324 Pages) ATMEL

261 / 324 page

261

2513K–AVR–07/09

ATmega162/V

Write the page using programming instruction 2g.

Poll for Flash write complete using programming instruction 2h, or wait for t

WLRH_FLASH

(refer to Table 107 on page 244).

Repeat steps 3 to 7 until all data have been programmed.

A more efficient data transfer can be achieved using the PROG_PAGELOAD instruction:

Enter JTAG instruction PROG_COMMANDS.

Enable Flash write using programming instruction 2a.

Load the page address using programming instructions 2b and 2c. PCWORD (refer to

Table 105 on page 236) is used to address within one page and must be written as 0.

Enter JTAG instruction PROG_PAGELOAD.

Load the entire page by shifting in all instruction words in the page, starting with the LSB

of the first instruction in the page and ending with the MSB of the last instruction in the

page.

Enter JTAG instruction PROG_COMMANDS.

Write the page using programming instruction 2g.

Poll for Flash write complete using programming instruction 2h, or wait for t

WLRH_FLASH

(refer to Table 107 on page 244).

Repeat steps 3 to 8 until all data have been programmed.

Reading the Flash

Enter JTAG instruction PROG_COMMANDS.

Enable Flash read using programming instruction 3a.

Load address using programming instructions 3b and 3c.

Read data using programming instruction 3d.

Repeat steps 3 and 4 until all data have been read.

A more efficient data transfer can be achieved using the PROG_PAGEREAD instruction:

Enter JTAG instruction PROG_COMMANDS.

Enable Flash read using programming instruction 3a.

Load the page address using programming instructions 3b and 3c. PCWORD (refer to

Table 105 on page 236) is used to address within one page and must be written as 0.

Enter JTAG instruction PROG_PAGEREAD.

Read the entire page by shifting out all instruction words in the page, starting with the

LSB of the first instruction in the page and ending with the MSB of the last instruction in

the page. Remember that the first 8 bits shifted out should be ignored.

Enter JTAG instruction PROG_COMMANDS.

Repeat steps 3 to 6 until all data have been read.

ATmega162 Datasheet(PDF) 261 Page - ATMEL Corporation