ATMEGA323L Datasheet, PDF (208/247 Pages) ATMEL Corporation – 8-bit Microcontroller with 32K Bytes of In-System Programmable Flash

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, 1,024. Internally the Shift Register is 8-bit, and the
data are automatically transferred to the Flash page buffer byte-by-byte. Shift in all
instruction words in the page, starting with the LSB of the instruction with page address
0 and ending with the MSB of the instruction with page address 3F. This provides an
efficient way to load the entire Flash page buffer before executing Page Write.
Figure 104. Virtual Flash Page Load Register
State
machine
STROBES
ADDRESS
TDI
Flash
EEPROM
Fuses
Lock Bits
D
A
T
A
TDO
208 ATmega323(L)
1457G–AVR–09/03