ATmega16 datasheet(275/357 Pages) ATMEL

275 / 357 page

275

2466S–AVR–05/09

ATmega16(L)

ten. Note that the entire page is written simultaneously and any address within the page can be

used for polling. Data polling of the Flash will not work for the value $FF, so when programming

this value, the user will have to wait for at least t

WD_FLASH before programming the next page. As

a chip erased device contains $FF in all locations, programming of addresses that are meant to

contain $FF, can be skipped. See Table 115 for t

WD_FLASH value

Data Polling EEPROM

When a new byte has been written and is being programmed into EEPROM, reading the

address location being programmed will give the value $FF. At the time the device is ready for a

new byte, the programmed value will read correctly. This is used to determine when the next

byte can be written. This will not work for the value $FF, but the user should have the following in

mind: As a chip erased device contains $FF in all locations, programming of addresses that are

meant to contain $FF, can be skipped. This does not apply if the EEPROM is re-programmed

without chip erasing the device. In this case, data polling cannot be used for the value $FF, and

the user will have to wait at least t

WD_EEPROM before programming the next byte. See Table 115

for t

WD_EEPROM value.

ATmega16 Datasheet(PDF) 275 Page - ATMEL Corporation