ATMEGA128A-MUR Atmel, ATMEGA128A-MUR Datasheet - Page 86
![MCU AVR 128K FLASH 16MHZ 64QFN](/photos/12/13/121326/313-64-qfn_sml.jpg)
ATMEGA128A-MUR
Manufacturer Part Number
ATMEGA128A-MUR
Description
MCU AVR 128K FLASH 16MHZ 64QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA128A-MUR
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
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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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
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