IC MCU 128K 6MHZ A/D IT 64TQFP

ATMEGA103-6AI

Manufacturer Part NumberATMEGA103-6AI
DescriptionIC MCU 128K 6MHZ A/D IT 64TQFP
ManufacturerAtmel
SeriesAVR® ATmega
ATMEGA103-6AI datasheets
 


Specifications of ATMEGA103-6AI

Core ProcessorAVRCore Size8-Bit
Speed6MHzConnectivitySPI, UART/USART
PeripheralsPOR, PWM, WDTNumber Of I /o32
Program Memory Size128KB (64K x 16)Program Memory TypeFLASH
Eeprom Size4K x 8Ram Size4K x 8
Voltage - Supply (vcc/vdd)4 V ~ 5.5 VData ConvertersA/D 8x10b
Oscillator TypeInternalOperating Temperature-40°C ~ 85°C
Package / Case64-TQFP, 64-VQFPFor Use WithATSTK501 - ADAPTER KIT FOR 64PIN AVR MCU
Lead Free Status / RoHS StatusContains lead / RoHS non-compliant  
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Page 110/141

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Reading the Flash
Reading the EEPROM
Programming the Fuse Bits
ATmega103(L)
110
Figure 75. Programming the EEPROM Waveforms
DATA
$11
ADDR. HIGH
XA1
XA2
BS1
XTAL1
WR
RDY/BSY
+12V
RESET
OE
BS2
PAGEL
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
DATA.
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
DATA.
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.
Bit 5 = SPIEN Fuse bit
Bit 3 = EESAVE Fuse bit
Bit 2 = always “1”
ADDR. LOW
DATA LOW
0945I–AVR–02/07