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ATmega64A Datasheet(PDF) 91 Page - ATMEL Corporation

Part # ATmega64A
Description  8-bit Microcontroller with 64K Bytes In-System Programmable Flash
PDF  392 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATmega64A Datasheet(HTML) 91 Page - ATMEL Corporation

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91
8160C–AVR–07/09
ATmega64A
13.4.18
PINF – Port F Input Pins Address
Note that PORTF and DDRF Registers are not available in ATmega103 compatibility mode
where Port F serves as digital input only.
13.4.19
PORTG – Port G Data Register
13.4.20
DDRG – Port G Data Direction Register
13.4.21
PING – Port G Input Pins Address
Note that PORTG, DDRG, and PING are not available in ATmega103 compatibility mode. In the
ATmega103 compatibility mode Port G serves its alternate functions only (TOSC1, TOSC2, WR,
RD and ALE).
13.4.22
SFIOR – Special Function IO Register
• Bit 2 – 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 “Con-
figuring the Pin” on page 69 for more details about this feature.
Bit
7
65
43
21
0
0x00 (0x20)
PINF7
PINF6
PINF5
PINF4
PINF3
PINF2
PINF1
PINF0
PINF
Read/Write
RRR
RR
RR
R
Initial Value
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Bit
7
6
5
432
10
(0x65)
–
–
–
PORTG4
PORTG3
PORTG2
PORTG1
PORTG0
PORTG
Read/Write
R
R
R
R/W
R/W
R/W
R/W
R/W
Initial Value
0
0
0
0
0
0
0
0
Bit
7
65
43
21
0
(0x64)
–
–
–
DDG4
DDG3
DDG2
DDG1
DDG0
DDRG
Read/Write
R
R
R
R/W
R/W
R/W
R/W
R/W
Initial Value
0
0
0
0
0
0
0
0
Bit
7
65
43
21
0
(0x63)
–
–
–
PING4
PING3
PING2
PING1
PING0
PING
Read/Write
RRR
RR
RR
R
Initial Value
0
0
0
N/A
N/A
N/A
N/A
N/A
Bit
7
654
3
2
1
0
0x20 (0x40)
TSM
–
–
–
ACME
PUD
PSR0
PSR321
SFIOR
Read/Write
R/W
R
R
R
R/W
R/W
R/W
R/W
Initial Value
0
0
0
0
0
0
0
0



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