ATmega48PA Automotive Atmel Corporation, ATmega48PA Automotive Datasheet - Page 91
ATmega48PA Automotive
Manufacturer Part Number
ATmega48PA Automotive
Description
Manufacturer
Atmel Corporation
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14.4
14.4.1
14.4.2
14.4.3
14.4.4
14.4.5
14.4.6
14.4.7
9223B–AVR–09/11
Register Description
MCUCR – MCU Control Register
PORTB – The Port B Data Register
DDRB – The Port B Data Direction Register
PINB – The Port B Input Pins Address
PORTC – The Port C Data Register
DDRC – The Port C Data Direction Register
PINC – The Port C Input Pins Address
Note:
• Bit 4 – PUD: Pull-up Disable
When this bit is written to one, the pull-ups in the I/O ports are disabled even if the DDxn and
PORTxn Registers are configured to enable the pull-ups ({DDxn, PORTxn} = 0b01). See
“Configuring the Pin” on page 74
Bit
0x35 (0x55)
Read/Write
Initial Value
Bit
0x05 (0x25)
Read/Write
Initial Value
Bit
0x04 (0x24)
Read/Write
Initial Value
Bit
0x03 (0x23)
Read/Write
Initial Value
Bit
0x08 (0x28)
Read/Write
Initial Value
Bit
0x07 (0x27)
Read/Write
Initial Value
Bit
0x06 (0x26)
Read/Write
Initial Value
Atmel ATmega48PA/88PA/168PA [Preliminary]
1. BODS and BODSE only available for picoPower devices ATmega48PA/88PA/168PA
PORTB7
PINB7
DDB7
R/W
R/W
N/A
R
7
–
0
R
R
R
R
7
0
7
0
7
7
–
0
7
–
0
7
–
0
PORTB6
PORTC6
BODS
PINB6
PINC6
DDB6
DDC6
R/W
R/W
R/W
R/W
R/W
N/A
N/A
R
R
6
0
6
0
6
0
6
6
0
6
0
6
(1)
PORTB5
PORTC5
BODSE
PINB5
PINC5
DDB5
DDC5
R/W
R/W
R/W
R/W
for more details about this feature.
N/A
N/A
R/W
R
R
5
0
5
0
5
5
0
5
0
5
5
0
(1)
PORTB4
PORTC4
PINB4
PINC4
DDB4
DDC4
R/W
R/W
R/W
R/W
N/A
N/A
R
R
4
0
4
0
4
4
0
4
0
4
PUD
R/W
4
0
PORTB3
PORTC3
PINB3
PINC3
DDB3
DDC3
R/W
R/W
R/W
R/W
N/A
N/A
3
0
R
3
0
R
3
0
3
3
0
3
R
3
–
0
PORTB2
PORTC2
DDB2
PINB2
DDC2
PINC2
R/W
R/W
R/W
R/W
N/A
N/A
2
0
R
2
0
R
2
0
2
2
0
2
R
2
–
0
PORTB1
PORTC1
DDB1
PINB1
DDC1
PINC1
R/W
R/W
IVSEL
R/W
R/W
N/A
N/A
R/W
1
0
R
1
0
R
1
0
1
1
0
1
1
0
PORTB0
PORTC0
DDB0
PINB0
DDC0
PINC0
IVCE
R/W
R/W
R/W
R/W
R/W
N/A
N/A
0
0
R
0
0
R
0
0
0
0
0
0
0
0
MCUCR
PORTB
PORTC
DDRB
DDRC
PINB
PINC
91
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