ATmega64A datasheet(322/392 Pages) ATMEL

Part #	ATmega64A

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

PDF	392 Pages

Scroll/Zoom	100%

Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

Logo

322 / 392 page

322

8160C–AVR–07/09

ATmega64A

Figure 27-15. State Machine Sequence for Changing/Reading the Data Word

27.9.11

Virtual Flash Page Load Register

The Virtual Flash Page Load Register is a virtual scan chain with length equal to the number of

bits in one Flash page. Internally the Shift Register is 8-bit, and the data are automatically trans-

ferred to the Flash page buffer byte-by-byte. Shift 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. This provides an efficient way to load the entire Flash page buffer before executing

Page Write.

Test-Logic-Reset

Run-Test/Idle

Shift-DR

Exit1-DR

Pause-DR

Exit2-DR

Update-DR

Select-IR Scan

Capture-IR

Shift-IR

Exit1-IR

Pause-IR

Exit2-IR

Update-IR

Select-DR Scan

Capture-DR

ATmega64A Datasheet(PDF) 322 Page - ATMEL Corporation