ATMEGA103-6AC Atmel, ATMEGA103-6AC Datasheet - Page 110
ATMEGA103-6AC
Manufacturer Part Number
ATMEGA103-6AC
Description
IC MCU 128K 6MHZ A/D 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA103-6AC
Core Processor
AVR
Core Size
8-Bit
Speed
6MHz
Connectivity
SPI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
32
Program Memory Size
128KB (64K x 16)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
64-TQFP, 64-VQFP
For Use With
ATSTK501 - ADAPTER KIT FOR 64PIN AVR MCU
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATMEGA103-6AC
Manufacturer:
ATMEL
Quantity:
1
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Reading the Flash
Reading the EEPROM
Programming the Fuse Bits
110
ATmega103(L)
Figure 75. Programming the EEPROM Waveforms
The algorithm for reading the Flash memory is as follows (refer to “Programming the
Flash” on page 107 for details on command and address loading):
1. A: Load Command “0000 0010”.
2. H: Load Address High Byte ($00 - $FF).
3. B: Load Address Low Byte ($00 - $FF).
4. Set OE to “0”, and BS1 to “0”. The Flash word Low Byte can now be read at
5. Set BS 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 “Programming the
Flash” on page 107 for details on command and address loading):
1. A: Load Command “0000 0011”.
2. H: Load Address High Byte ($00 - $0F).
3. B: Load Address ($00 - $FF).
4. Set OE to “0”, and BS1 to “0”. The EEPROM Data byte can now be read at
5. Set OE to “1”.
The algorithm for programming the Fuse bits is as follows (refer to “Programming the
Flash” on page 107 for details on command and data loading):
1. A: Load Command “0100 0000”.
2. C: Load Data Low Byte. Bit n = “0” programs and bit n = “1” erases the Fuse bit.
RDY/BSY
RESET
PAGEL
XTAL1
DATA
DATA.
DATA.
Bit 5 = SPIEN Fuse bit
Bit 3 = EESAVE Fuse bit
Bit 2 = always “1”
XA1
XA2
BS1
BS2
WR
OE
+12V
$11
ADDR. HIGH
ADDR. LOW
DATA LOW
0945I–AVR–02/07
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