ATMEGA8515-16AI Atmel, ATMEGA8515-16AI Datasheet - Page 195

• Manufacturer Part Number: ATMEGA8515-16AI
• Description: IC AVR MCU 8K 16MHZ IND 44-TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA8515-16AI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: EBI/EMI, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 35
• Program Memory Size: 8KB (4K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Converters: -

Data Polling EEPROM
2512K–AVR–01/10
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 deter-
mine 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 reprogrammed 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
Table 93. Minimum Wait Delay Before Writing the Next Flash or EEPROM Location
Figure 85. Serial Programming Waveforms
WD_EEPROM
Symbol
t
t
t
t
SERIAL DATA OUTPUT
WD_FUSE
WD_FLASH
WD_EEPROM
WD_ERASE
SERIAL CLOCK INPUT
SERIAL DATA INPUT
before programming the next byte. See Table 93 for t
SAMPLE
(MOSI)
(MISO)
(SCK)
MSB
MSB
Minimum Wait Delay
4.5 ms
4.5 ms
9.0 ms
9.0 ms
ATmega8515(L)
WD_EEPROM
value.
LSB
LSB
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