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ATMEGA48A Datasheet(PDF) 11 Page - ATMEL Corporation

Part # ATMEGA48A
Description  8-bit Atmel Microcontroller with 4/8/16/32K Bytes In-System Programmable Flash
PDF  35 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATMEGA48A Datasheet(HTML) 11 Page - ATMEL Corporation

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11
8271DS–AVR–05/11
ATmega48A/PA/88A/PA/168A/PA/328/P
(0x7D)
Reserved
–
–
–
–
–
–
–
–
(0x7C)
ADMUX
REFS1
REFS0
ADLAR
–
MUX3
MUX2
MUX1
MUX0
264
(0x7B)
ADCSRB
–ACME
–
–
–
ADTS2
ADTS1
ADTS0
267
(0x7A)
ADCSRA
ADEN
ADSC
ADATE
ADIF
ADIE
ADPS2
ADPS1
ADPS0
265
(0x79)
ADCH
ADC Data Register High byte
267
(0x78)
ADCL
ADC Data Register Low byte
267
(0x77)
Reserved
–
–
–
–
–
–
–
–
(0x76)
Reserved
–
–
–
–
–
–
–
–
(0x75)
Reserved
–
–
–
–
–
–
–
–
(0x74)
Reserved
–
–
–
–
–
–
–
–
(0x73)
Reserved
–
–
–
–
–
–
–
–
(0x72)
Reserved
–
–
–
–
–
–
–
–
(0x71)
Reserved
–
–
–
–
–
–
–
–
(0x70)
TIMSK2
–
–
–
–
–
OCIE2B
OCIE2A
TOIE2
165
(0x6F)
TIMSK1
–
–ICIE1
–
–
OCIE1B
OCIE1A
TOIE1
141
(0x6E)
TIMSK0
–
–
–
–
–
OCIE0B
OCIE0A
TOIE0
113
(0x6D)
PCMSK2
PCINT23
PCINT22
PCINT21
PCINT20
PCINT19
PCINT18
PCINT17
PCINT16
76
(0x6C)
PCMSK1
–
PCINT14
PCINT13
PCINT12
PCINT11
PCINT10
PCINT9
PCINT8
76
(0x6B)
PCMSK0
PCINT7
PCINT6
PCINT5
PCINT4
PCINT3
PCINT2
PCINT1
PCINT0
76
(0x6A)
Reserved
–
–
–
–
–
–
–
–
(0x69)
EICRA
–
–
–
–ISC11
ISC10
ISC01
ISC00
73
(0x68)
PCICR
–
–
–
–
–
PCIE2
PCIE1
PCIE0
(0x67)
Reserved
–
–
–
–
–
–
–
–
(0x66)
OSCCAL
Oscillator Calibration Register
38
(0x65)
Reserved
–
–
–
–
–
–
–
–
(0x64)
PRR
PRTWI
PRTIM2
PRTIM0
–
PRTIM1
PRSPI
PRUSART0
PRADC
43
(0x63)
Reserved
–
–
–
–
–
–
–
–
(0x62)
Reserved
–
–
–
–
–
–
–
–
(0x61)
CLKPR
CLKPCE
–
–
–
CLKPS3
CLKPS2
CLKPS1
CLKPS0
38
(0x60)
WDTCSR
WDIF
WDIE
WDP3
WDCE
WDE
WDP2
WDP1
WDP0
56
0x3F (0x5F)
SREG
I
T
H
S
V
N
Z
C
10
0x3E (0x5E)
SPH
–
–
–
–
–
(SP10) 5.
SP9
SP8
13
0x3D (0x5D)
SPL
SP7
SP6
SP5
SP4
SP3
SP2
SP1
SP0
13
0x3C (0x5C)
Reserved
–
–
–
–
–
–
–
–
0x3B (0x5B)
Reserved
–
–
–
–
–
–
–
–
0x3A (0x5A)
Reserved
–
–
–
–
–
–
–
–
0x39 (0x59)
Reserved
–
–
–
–
–
–
–
–
0x38 (0x58)
Reserved
–
–
–
–
–
–
–
–
0x37 (0x57)
SPMCSR
SPMIE
(RWWSB)5.
–
(RWWSRE)5.
BLBSET
PGWRT
PGERS
SELFPRGEN
295
0x36 (0x56)
Reserved
–
–
–
–
–
–
–
–
0x35 (0x55)
MCUCR
–BODS(6)
BODSE(6)
PUD
–
–
IVSEL
IVCE
46/70/94
0x34 (0x54)
MCUSR
–
–
–
–
WDRF
BORF
EXTRF
PORF
56
0x33 (0x53)
SMCR
–
–
–
–SM2
SM1
SM0
SE
41
0x32 (0x52)
Reserved
–
–
–
–
–
–
–
–
0x31 (0x51)
Reserved
–
–
–
–
–
–
–
–
0x30 (0x50)
ACSR
ACD
ACBG
ACO
ACI
ACIE
ACIC
ACIS1
ACIS0
249
0x2F (0x4F)
Reserved
–
–
–
–
–
–
–
–
0x2E (0x4E)
SPDR
SPI Data Register
177
0x2D (0x4D)
SPSR
SPIF
WCOL
–
–
–
–
–
SPI2X
176
0x2C (0x4C)
SPCR
SPIE
SPE
DORD
MSTR
CPOL
CPHA
SPR1
SPR0
175
0x2B (0x4B)
GPIOR2
General Purpose I/O Register 2
26
0x2A (0x4A)
GPIOR1
General Purpose I/O Register 1
26
0x29 (0x49)
Reserved
–
–
–
–
–
–
–
–
0x28 (0x48)
OCR0B
Timer/Counter0 Output Compare Register B
0x27 (0x47)
OCR0A
Timer/Counter0 Output Compare Register A
0x26 (0x46)
TCNT0
Timer/Counter0 (8-bit)
0x25 (0x45)
TCCR0B
FOC0A
FOC0B
–
–
WGM02
CS02
CS01
CS00
0x24 (0x44)
TCCR0A
COM0A1
COM0A0
COM0B1
COM0B0
–
–WGM01
WGM00
0x23 (0x43)
GTCCR
TSM
–
–
–
–
–
PSRASY
PSRSYNC
145/167
0x22 (0x42)
EEARH
(EEPROM Address Register High Byte) 5.
22
0x21 (0x41)
EEARL
EEPROM Address Register Low Byte
22
0x20 (0x40)
EEDR
EEPROM Data Register
22
0x1F (0x3F)
EECR
–
–
EEPM1
EEPM0
EERIE
EEMPE
EEPE
EERE
22
0x1E (0x3E)
GPIOR0
General Purpose I/O Register 0
26
0x1D (0x3D)
EIMSK
–
–
–
–
–
–INT1
INT0
74
0x1C (0x3C)
EIFR
–
–
–
–
–
–
INTF1
INTF0
74
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Page


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