ATMEGA8L-8MU Atmel, ATMEGA8L-8MU Datasheet - Page 225

• Manufacturer Part Number: ATMEGA8L-8MU
• Description: IC AVR MCU 8K 8MHZ 3V 32-QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA8L-8MU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 23
• Program Memory Size: 8KB (4K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Package: 32MLF EP
• Device Core: AVR
• Family Name: ATmega
• Maximum Speed: 8 MHz
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 23
• Interface Type: SPI/TWI/USART
• On-chip Adc: 8-chx10-bit
• Number Of Timers: 3
• Controller Family/series: AVR MEGA
• No. Of I/o's: 23
• Eeprom Memory Size: 512Byte
• Ram Memory Size: 1KB
• Cpu Speed: 8MHz
• Rohs Compliant: Yes
• For Use With: ATSTK600-TQFP32 - STK600 SOCKET/ADAPTER 32-TQFPATSTK600-DIP40 - STK600 SOCKET/ADAPTER 40-PDIP770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRISP2 - PROGRAMMER AVR IN SYSTEMATSTK500 - PROGRAMMER AVR STARTER KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Reading the Flash
Reading the EEPROM
Programming the
Fuse Low Bits
2486Z–AVR–02/11
Figure 107. Programming the EEPROM Waveforms
The algorithm for reading the Flash memory is as follows (refer to
page 222
1. A: Load Command “0000 0010”
2. G: Load Address High byte (0x00 - 0xFF)
3. B: Load Address Low byte (0x00 - 0xFF)
4. Set OE to “0”, and BS1 to “0”. The Flash word Low byte can now be read at DATA
5. Set BS1 to “1”. The Flash word High byte can now be read at DATA
6. Set OE to “1”
The algorithm for reading the EEPROM memory is as follows (refer to
on page 222
1. A: Load Command “0000 0011”
2. G: Load Address High byte (0x00 - 0xFF)
3. B: Load Address Low byte (0x00 - 0xFF)
4. Set OE to “0”, and BS1 to “0”. The EEPROM Data byte can now be read at DATA
5. Set OE to “1”
The algorithm for programming the Fuse Low bits is as follows (refer to
on page 222
1. A: Load Command “0100 0000”
2. C: Load Data Low byte. Bit n = “0” programs and bit n = “1” erases the Fuse bit
3. Set BS1 and BS2 to “0”
4. Give WR a negative pulse and wait for RDY/BSY to go high
RESET +12V
RDY/BSY
PAGEL
for details on Command and Address loading):
XTAL1
DATA
XA1
XA0
BS1
BS2
WR
OE
for details on Command and Address loading):
for details on Command and Data loading):
0x11
A
ADDR. HIGH
G
ADDR. LOW
B
DATA
C
E
XX
ADDR. LOW
B
DATA
C
K
XX
E
“Programming the Flash” on
“Programming the Flash”
“Programming the Flash”
ATmega8(L)
L
225