ATMEGA128A-ANR Atmel, ATMEGA128A-ANR Datasheet - Page 86

• Manufacturer Part Number: ATMEGA128A-ANR
• Description: IC MCU AVR 128K FLASH 64TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA128A-ANR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: EBI/EMI, I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 128KB (64K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP
• Core: AVR8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

12.4
12.4.1
8151H–AVR–02/11
Register Description
SFIOR - Special Function IO Register
Table 12-21
shown in
Table 12-21. Overriding Signals for Alternate Functions in PG4:PG1
Table 12-22. Overriding Signals for Alternate Functions in PG0
• 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
figuring the Pin” on page 66
Bit
Read/Write
Initial Value
Signal Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
AIO
Signal Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
AIO
Figure 12-6 on page
and
TSM
R/W
7
0
Table 12-22
PG4/TOSC1
AS0
0
AS0
0
0
0
AS0
0
–
T/C0 OSC INPUT
R
6
–
0
for more details about this feature.
relates the alternate functions of Port G to the overriding signals
71.
R
5
–
0
PG3/TOSC2
AS0
0
AS0
0
0
0
AS0
0
–
T/C0 OSC OUTPUT
R
4
–
0
ACME
R/W
3
0
PG0/WR
SRE
0
SRE
1
SRE
WR
0
0
–
–
PUD
R/W
2
0
PG2/ALE
SRE
0
SRE
1
SRE
ALE
0
0
–
–
ATmega128A
PSR0
R/W
1
0
PSR321
R/W
0
0
PG1/RD
SRE
0
SRE
1
SRE
RD
0
0
–
–
SFIOR
“Con-
86