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ATMEGA168-20AI Datasheet(PDF) 9 Page - ATMEL Corporation

Part # ATMEGA168-20AI
Description  8-bit Microcontroller with 8K Bytes In-System Programmable Flash
Download  33 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATMEGA168-20AI Datasheet(HTML) 9 Page - ATMEL Corporation

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9
2545JS–AVR–12/06
ATmega48/88/168
(0xBF)
Reserved
–
–
–
–
–
–
–
–
(0xBE)
Reserved
–
–
–
–
–
–
–
–
(0xBD)
TWAMR
TWAM6
TWAM5
TWAM4
TWAM3
TWAM2
TWAM1
TWAM0
–239
(0xBC)
TWCR
TWINT
TWEA
TWSTA
TWSTO
TWWC
TWEN
–TWIE
236
(0xBB)
TWDR
2-wire Serial Interface Data Register
238
(0xBA)
TWAR
TWA6
TWA5
TWA4
TWA3
TWA2
TWA1
TWA0
TWGCE
239
(0xB9)
TWSR
TWS7
TWS6
TWS5
TWS4
TWS3
–TWPS1
TWPS0
238
(0xB8)
TWBR
2-wire Serial Interface Bit Rate Register
236
(0xB7)
Reserved
–
–
–
–
–
–
–
(0xB6)
ASSR
–
EXCLK
AS2
TCN2UB
OCR2AUB
OCR2BUB
TCR2AUB
TCR2BUB
159
(0xB5)
Reserved
–
–
–
–
–
–
–
–
(0xB4)
OCR2B
Timer/Counter2 Output Compare Register B
158
(0xB3)
OCR2A
Timer/Counter2 Output Compare Register A
157
(0xB2)
TCNT2
Timer/Counter2 (8-bit)
157
(0xB1)
TCCR2B
FOC2A
FOC2B
–
–
WGM22
CS22
CS21
CS20
156
(0xB0)
TCCR2A
COM2A1
COM2A0
COM2B1
COM2B0
–
–WGM21
WGM20
153
(0xAF)
Reserved
–
–
–
–
–
–
–
–
(0xAE)
Reserved
–
–
–
–
–
–
–
–
(0xAD)
Reserved
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–
–
–
–
–
–
–
(0xAC)
Reserved
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–
–
–
–
–
–
–
(0xAB)
Reserved
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–
–
–
–
–
–
–
(0xAA)
Reserved
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–
–
–
–
–
–
–
(0xA9)
Reserved
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–
–
–
–
–
–
–
(0xA8)
Reserved
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–
–
–
–
–
–
–
(0xA7)
Reserved
–
–
–
–
–
–
–
–
(0xA6)
Reserved
–
–
–
–
–
–
–
–
(0xA5)
Reserved
–
–
–
–
–
–
–
–
(0xA4)
Reserved
–
–
–
–
–
–
–
–
(0xA3)
Reserved
–
–
–
–
–
–
–
–
(0xA2)
Reserved
–
–
–
–
–
–
–
–
(0xA1)
Reserved
–
–
–
–
–
–
–
–
(0xA0)
Reserved
–
–
–
–
–
–
–
–
(0x9F)
Reserved
–
–
–
–
–
–
–
–
(0x9E)
Reserved
–
–
–
–
–
–
–
–
(0x9D)
Reserved
–
–
–
–
–
–
–
–
(0x9C)
Reserved
–
–
–
–
–
–
–
–
(0x9B)
Reserved
–
–
–
–
–
–
–
–
(0x9A)
Reserved
–
–
–
–
–
–
–
–
(0x99)
Reserved
–
–
–
–
–
–
–
–
(0x98)
Reserved
–
–
–
–
–
–
–
–
(0x97)
Reserved
–
–
–
–
–
–
–
–
(0x96)
Reserved
–
–
–
–
–
–
–
–
(0x95)
Reserved
–
–
–
–
–
–
–
–
(0x94)
Reserved
–
–
–
–
–
–
–
–
(0x93)
Reserved
–
–
–
–
–
–
–
–
(0x92)
Reserved
–
–
–
–
–
–
–
–
(0x91)
Reserved
–
–
–
–
–
–
–
–
(0x90)
Reserved
–
–
–
–
–
–
–
–
(0x8F)
Reserved
–
–
–
–
–
–
–
–
(0x8E)
Reserved
–
–
–
–
–
–
–
–
(0x8D)
Reserved
–
–
–
–
–
–
–
–
(0x8C)
Reserved
–
–
–
–
–
–
–
–
(0x8B)
OCR1BH
Timer/Counter1 - Output Compare Register B High Byte
134
(0x8A)
OCR1BL
Timer/Counter1 - Output Compare Register B Low Byte
134
(0x89)
OCR1AH
Timer/Counter1 - Output Compare Register A High Byte
134
(0x88)
OCR1AL
Timer/Counter1 - Output Compare Register A Low Byte
134
(0x87)
ICR1H
Timer/Counter1 - Input Capture Register High Byte
135
(0x86)
ICR1L
Timer/Counter1 - Input Capture Register Low Byte
135
(0x85)
TCNT1H
Timer/Counter1 - Counter Register High Byte
134
(0x84)
TCNT1L
Timer/Counter1 - Counter Register Low Byte
134
(0x83)
Reserved
–
–
–
–
–
–
–
–
(0x82)
TCCR1C
FOC1A
FOC1B
–
–
–
–
–
–133
(0x81)
TCCR1B
ICNC1
ICES1
–
WGM13
WGM12
CS12
CS11
CS10
132
(0x80)
TCCR1A
COM1A1
COM1A0
COM1B1
COM1B0
–
–WGM11
WGM10
130
(0x7F)
DIDR1
–
–
–
–
–
–AIN1D
AIN0D
243
(0x7E)
DIDR0
–
–
ADC5D
ADC4D
ADC3D
ADC2D
ADC1D
ADC0D
259
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Page


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